Home

LostBooks

DeadSeaS

Remodeling

Residential

Adventures

Art Work

SteelHome

Video

The Truth

Troubled
Leadership

HOY

Assemblies
of Yahweh Cisco Tx.

Obituaries

TEMPLE

HWHY
efei

Reporter News Forum

KTAB News Forum

 Bayit
YHWH

 HOY Forum

YouTube

Studying
Scripture

Forum

Eclecticrose
Health Sup.

                                                                                                                                                                                                                                                                                                                                                                    

http://yahweh.com/NUKEBABY/author.htm

Yisrayl Hawkins is not a Doctor. Many of of our members are getting sick, and dying because Yisrayl Hawkins is telling everyone to take the cleanses, which include peroxide baths, essential oils, colloidal silver, other herbs and cleanses sold in their health food store, and salting every single thing they eat.

Colloidal Silver

http://www.mayoclinic.com/health/lead-poisoning/FL00068/DSECTION=3

Salt Poisoning

http://www.bmj.com/cgi/content/full/326/7381/157

BMJ 2003;326:157-160 ( 18 January )

Education and debate

Distinguishing between salt poisoning and hypernatraemic dehydration in children

Malcolm G Coulthard, consultant paediatric nephrologist aGeorge B Haycock, professor of paediatrics b

a Department of Paediatric Nephrology, Royal Victoria Infirmary, Newcastle upon Tyne NE1 4LP, b Guy's, King's, and St Thomas's School of Medicine, London SE1 9RT

Correspondence to: M G Coulthard malcolm.coulthard@nuth.northy.nhs.uk

Hypernatraemia caused by salt poisoning or dehydration must be distinguished correctly, as the two situations need different legal and medical approaches. Two nephrologists discuss the physiology of hypernatraemia and explain how to differentiate between cases caused by salt poisoning and dehydration

The criteria most widely used to diagnose salt poisoning in children were formulated by Meadow.1 These criteria focus on hypernatraemia with high urinary concentrations of sodium and chloride, but this combination may also be found in children with dehydration caused by diarrhoea. The medical and legal management of the two conditions fundamentally are different, so reliable ways to distinguish them are needed.

We consider the physiology of salt overload and hypernatraemic dehydration.2 We explain how to differentiate the two situations on the basis of history; examination; and biochemical analysis of serial, paired, blood, and "spot" urine samples. We illustrate the method with two cases that have been tested in court.
 

Summary points

 

 

Medical causes of hypernatraemia other than salt poisoning and dehydration are persistent and easy to exclude

 

Urinary sodium concentrations may be high in cases of salt poisoning and dehydration, so they cannot distinguish between the two conditions

 

Fractional excretions of sodium and water can differentiate salt poisoning from dehydration

 

Serial pairs of spot plasma and urine samples should be taken during recovery

 

"Spot balances" for salt and water estimated from fractional excretion values give a clear picture of the physiology in individual cases

 

 




 

    Illustrative cases

Salt poisoning
In case 1, a 7 year old boy had severe colitis, for which he underwent a colostomy and received intravenous and nasogastric nutrition, for five years. He presented twice with confusion, hypernatraemia, and weight gain but without fever, diarrhoea, or vomiting. Paired plasma and urine samples collected during his second presentation led to a diagnosis of salt poisoning (table). His mother then confessed to inducing the colitis with purgatives and twice giving him salt solutions nasogastrically.


 

                              
View this table:
[in this window]
[in a new window]
 

Comparison of variables in a seven year old boy with hypernatraemia caused by salt poisoning (case 1) and in a boy aged eight months with dehydration (case 2)

 

 

Hypernatraemic dehydration
In case 2, a boy born at 28 weeks' gestation with aortic arch and bronchial anomalies needed prolonged ventilation and remained oxygen dependent. Fundoplication was considered because he had severe gastro-oesophageal reflux and was failing to thrive. He was treated with domperidone, a compound alginate preparation (Gaviscon Infant), and feed supplements that contained glucose polymers. The boy's plasma biochemistry was normal, except when he was 5 and 8 months old, when he was acutely ill with high fever, profuse diarrhoea, exacerbation of vomiting, hypotonia, weight loss, and poor perfusion (table). Intravenous fluids dramatically improved his condition and restored his body weight.

The boy was taken into foster care after he was admitted at age 8 months, because doctors believed his biochemistry results confirmed salt poisoning and because his siblings' medical histories were considered suspicious. Three siblings had become hypernatraemic under similar circumstances: one died after remaining at home (on the general practitioner's advice) with pyrexia, explosive diarrhoea, and weight loss but without haemorrhagic encephalopathy.3 In addition, one sister, who was eunatraemic, died suddenly and unexpectedly. The odds of a second innocent death were suggested (incorrectly) to be 73 million to one.4 A court found that the mother was not guilty of manslaughter.




 

    Diagnostic pathway for childhood hypernatraemia

Exclusion of other medical causes
When a child presents with hypernatraemia, a defect in the system that controls urinary concentration must be excluded as a cause.
1 Children with hypernatraemia caused by such a defect usually have obvious polyuria and polydipsia that result from central or nephrogenic diabetes insipidus, chronic renal failure, or rare renal problems. Such children can easily develop negative water balance (when the volume of water ingested is less than the volume excreted in urine), which reduces solute excretion and induces hypernatraemic dehydration. Osmolality typically is less then 300 mmol/kg---sometimes as low as 50 mmol/kg. In all other children, urine osmolality can exceed 700 mmol/kg---as in both of our illustrative cases. A water deprivation test may be needed in children for whom the diagnosis is uncertain.

Essential hypernatraemia is a rare disorder of children and adults in which hypertonicity causes neither thirst nor the release of antidiuretic hormone but the release of antidiuretic hormone mediated by baroreceptors is normal. 5 6 The mechanism behind the condition is almost certainly selective destruction of the anterior hypothalamic osmoreceptor. Plasma concentrations of sodium >170 mmol/l are not unusual in this condition.

In practice, children who can maintain completely normal plasma concentrations of creatinine and electrolytes when they are well, eating a normal diet, and drinking a normal amount of fluids are extremely unlikely to have significant, persistent, underlying medical causes for hypernatraemia.

 

Clinical history
 

Salt overload
Salt overload is usually deliberate, so a story to explain the hypernatraemia, such as intravenous sodium bicarbonate treatment or accidental contamination of feeds, rarely is convincing. Speculation that only infants will take salty drinks
1 was disproved by an accident in 1963, in which 14 babies up to 10 weeks old became severely hypernatraemic after drinking feeds made with salt instead of sugar.3 Six of these babies died of haemorrhagic encephalopathy.

The notion that severe hypernatraemia cannot be caused by water depletion alone is also incorrect, because it is seen in babies who are inadequately breast fed 7 8 or who had undiagnosed oesophageal atresia.8 In healthy people, hypernatraemia causes vomiting and intense thirst, which may be recognised even in babies,3 and neurological signs, such as irritability, drowsiness or coma, and fits.

Hypernatraemic dehydration
In patients with hypernatraemic dehydration, dehydration results from a child having negative water balance (losing more water than is replaced). If the child is also losing more salt that he or she is receiving (negative sodium balance), the plasma concentrations of sodium may remain stable. For hypernatraemia to develop, the water loss must exceed any loss of salt. The patient's history usually reveals causative factors. Typically, diarrhoea causes water loss, and vomiting prevents intake of water. This condition was common in the 1960s and 1970s, when infant milks were more calorie dense than they are today
9 (not because they had higher sodium concentrations, as previously suggested10).

In patients with infective diarrhoea, undigested proteins and carbohydrates reach the colon, where bacteria metabolise them to small, osmotically active molecules that draw water but not sodium from the plasma into the colon; this makes the plasma hypernatraemic.11 The continued administration of glucose polymers in the presence of diarrhoea greatly increases this risk12---as happened in the boy described in case 2 and in three of his siblings. Parents find it difficult to recognise exacerbations caused by concomitant illnesses because of persistent vomiting caused by severe gastro-oesophageal reflux. The ratios of surface area to weight in infants that weigh 5 kg are twice those of adults and the skin is more permeable in infants; this means that water loss is much greater in infants than adults---especially in children with pyrexia.13

 

Dehydration associated with hypernatraemia undoubtedly is under-recognised. Even babies who lose up to 27% of their weight may not be diagnosed correctly outside hospital.8 Only half of such babies' paediatricians seem to notice this hypernatraemia.8

 

Clinical observations: acute changes in body weight
Body weight changes acutely in children with salt poisoning and in those with dehydration, but in opposite directions. Accurate weighings during treatment therefore provide important evidence. Weight change was not included in previous diagnostic schemes.
1

Salt poisoning ---Salt ingestion causes weight gain by inducing thirst and stimulating release of antidiuretic hormone---the baby in case 1 gained more than 4% of his original body weight. This volume expansion triggers excretion of the excess salt by suppressing release of aldosterone and stimulating release of atrial natriuretic peptide; this leads to restoration of normal body weight. Weight gain may be slower in babies who cannot regulate their fluid intake.

 

Dehydration ---Dehydration is synonymous with water loss and therefore weight loss; clinical grading is defined by the percentage loss. In case 2, the boy lost 7.6% of his weight and his siblings lost 4.8-14%. These changes are much larger than the normal fluctuations associated with recent feeds, a full bladder, or faecal loading. Occasionally, in infective enteritis, fluid is lost into the lumen of the bowel so rapidly that intravascular hypovolaemia occurs before the diarrhoea is clinically apparent; this means that weights measured at admission underestimate the extent of dehydration.

 

Biochemistry
 

Measurements of plasma concentrations
Dehydration causes underperfusion, which reduces the glomerular filtration rate. Conversely, the hyperdynamic circulation found in children with salt overload maintains the filtration rate. The rate is best estimated from the plasma creatinine concentration, although changes often are not appreciated for two reasons:

  • The absolute creatinine concentration is low in infants14
  • The concentration increases slowly after the glomerular filtration rate falls and may not have reached a plateau when it is first measured.

 

The paediatrician in case 2 considered the boy's values to be unremarkable, although they indicated that his glomerular filtration rate was only two thirds of the normal value.15 The rate recovered after the boy was rehydrated. The plasma concentration of urea is influenced by too many factors other than hydration to be a reliable indicator of renal function.1 Nevertheless, the differences in plasma concentrations of urea in cases 1 and 2 at presentation and after treatment are striking, and they certainly support the diagnosis of volume repletion and expansion in case 1 and volume contraction in case 2.

 

The plasma concentration of bicarbonate usually is normal in salt poisoning (as in case 1), but tissue underperfusion from dehydration induces metabolic acidosis and reduces the plasma concentration of bicarbonate (as in case 2). Concentrations of potassium in plasma are unhelpful, as they remain normal in salt poisoning and vary in dehydration, when release of aldosterone makes potassium concentrations fall and reduced glomerular filtration rate makes them rise.

Calculations of fractional excretions of salt and water
Dehydration drives avid reabsorption of sodium in the renal tubular regardless of the concentration of sodium in plasma, because preservation of volume predominates over tonicity. Dehydrated infants are assumed to have low urinary concentrations of sodium, and high urinary concentrations of sodium are assumed to indicate that excess salt is being excreted---but this is only half the story. Hypovolaemia also stimulates maximal water conservation, which increases the concentration of urine, so the final urinary concentration of sodium is unpredictable. In one study of infants with hypernatraemic dehydration caused by infective diarrhoea, the urinary sodium concentration ranged from 35 mmol/l to 232 mmol/l,
16 and in dogs with dialysis-induced hypernatraemic dehydration, the concentration ranged from 36 mmol/l to 280 mmol/l.2 The values from our illustrative cases and from previous reports of apparent salt poisoning all fell within these ranges.1 Clearly, high urinary concentrations of sodium alone cannot distinguish salt poisoning from dehydration.

Fractional excretions of sodium and water, which are calculated from the sodium and creatinine concentrations of paired plasma and "spot" urine samples, can distinguish the two situations (see box A on bmj.com). The values should be >= 2% or more in a child who has been salt poisoned and is volume replete and =<1% in a dehydrated child with viable renal tubules (table). Frequent serial data provide a dynamic picture---for example, the fractional excretion values for the boy in case 2 decreased after he was admitted.


 


View larger version (18K):
[in this window]
[in a new window]

 
Relation between high plasma sodium concentrations and urinary sodium concentrations and fractional excretions. Dotted line is upper limit of normal range
 

Estimates of salt and water balance
Serial "instantaneous" rates for sodium and water excretion can be estimated from the values of fractional excretion and glomerular filtration rate calculated at each collection time (see box B on bmj.com). Approximate "point" balances can be deduced if the salt and water administration rates are known. These estimates will be imprecise because their calculation requires several assumptions; however, salt poisoning and hypernatraemic dehydration produce such different physiological patterns that the estimates can confirm the diagnosis (table).

On admission, the child in case 1 had an estimated urine output in the normal range, but his sodium excretion was about 15 mmol/kg/day---enough to reduce the plasma concentration of sodium by over 1 mmol/hour and to allow it to correct fully by the next day. In contrast, sodium balance in case 2 was approximately neutral, but he conserved water avidly and retained most of his administered fluids, which fully corrected his plasma sodium concentrations within 17 hours.


 

    Conclusions

Reliance on urinary concentrations of sodium to diagnose salt poisoning in hypernatraemic children is unsafe because dehydrated infants may be diagnosed falsely as poisoned. The child's clinical history and acute changes in their weight provide important evidence that, combined with fractional excretions of sodium and water calculated from serial paired "spot" blood and urine samples and estimates of net sodium and water balances, allow the correct diagnosis to be made.

    Acknowledgments

Contributors: MGC and GBH were involved equally in conceiving the idea for the paper and in developing and writing it. MGC is the guarantor of the paper.

    Footnotes

Funding: None.

 

Competing interests: None declared.

 

Two boxes with worked examples are available on bmj.com


 

    References


 

1. Meadow R. Non-accidental salt poisoning. Arch Dis Child 1993; 68: 448-452[Abstract].
2. Finberg L, Rush BF, Cheung C-S. Renal excretion of sodium during hypernatraemia. Am J Dis Child 1964; 107: 483-488[Medline].
3. Finberg L, Killey J, Luttrell CN. Mass accidental salt poisoning in infancy: a study of a hospital disaster. JAMA 1963; 184: 187-190[ISI][Medline].
4. Watkins SJ. Conviction by mathematical error? Doctors and lawyers should get probability theory right. BMJ 2000; 320: 2-3[Free Full Text].
5. DeRubertis FR, Michelis MF, Beck N, Field JB, Davis BB. "Essential" hypernatraemia due to ineffective osmotic and intact volume regulation of vasopressin secretion. J Clin Invest 1971; 50: 97-111[Medline].
6. Schaff-Blass E, Robertson GL, Rosenfeld RL. Chronic hypernatraemia from a congenital defect in osmoregulation of thirst and vasopressin. J Pediatr 1983; 102: 703-708[CrossRef][ISI][Medline].
7. Hung CC, Judd BA. Hypernatraemic dehydration in exclusively breast-fed infants. Hong Kong J Paediatr 2000; 5: 31-33.
8. Oddie S, Richmond S, Coulthard MG. Hypernatraemic dehydration and breast feeding: a population study. Arch Dis Child 2001; 85: 318-320[Abstract/Free Full Text].
9. Hirschhorn N. Hypernatraemia and milk formulas. Arch Dis Child 1976; 51: 326[ISI][Medline].
10. Chambers TL, Steel AE. Concentrated milk feeds and their relation to hypernatraemic dehydration in infants. Arch Dis Child 1975; 50: 610-615[Abstract].
11. Hirschhorn N. The treatment of acute diarrhoea in children. An historical and physiological perspective. Am J Clin Nutr 1980; 33: 637-663[Abstract/Free Full Text].
12. Lindfors A, Lundberg B, Stenhammar L. Glucose polymers in diarrhoea---risk of hypernatraemia. Acta Paediatr 1992; 81: 73-74[ISI][Medline].
13. Boyd E. The growth of the surface area of the human body. Minneapolis: University of Minnesota Press, 1935.
14. Schwartz GJ, Haycock GB, Spitzer A. Plasma creatinine and urea concentration in children: normal values for age and sex. J Pediatr 1976; 88: 828-830[CrossRef][ISI][Medline].
15. Schwartz GJ, Haycock GB, Edelmann CMJ, Spitzer A. A simple estimate of glomerular filtration rate in children derived from body length and plasma creatinine. Pediatrics 1976; 58: 259-263[Abstract/Free Full Text].
16. Weil WB, Wallace WM. Hypertonic dehydration in infancy. Pediatrics 1956; 17: 171-181[Abstract/Free Full Text].

(Accepted 4 October 2002)
 


© 2003 BMJ Publishing Group Ltd

Related Article

Salt poisoning and dehydration must be distinguished
BMJ 2003 326: 0.
[Full Text]

 

This article has been cited by other articles:

(Search Google Scholar for Other Citing Articles)

 

  • Haycock, G. B (2006). Hypernatraemia: diagnosis and management. EDUCATION AND PRACTICE 91: ep8-ep8 [Full text]  
  • Hoorn, E.J., Halperin, M.L., Zietse, R. (2005). Diagnostic approach to a patient with hyponatraemia: traditional versus physiology-based options. QJM 98: 529-540 [Abstract] [Full text]  
  • Hall, D (2003). Protecting children, supporting professionals. Arch. Dis. Child. 88: 557-559 [Full text]  

Rapid Responses:

Read all Rapid Responses

Next Steps
Brian Morgan
bmj.com, 17 Jan 2003
[Full text]
Re: Next Steps
Malcolm G Coulthard, et al.
bmj.com, 5 Feb 2003
[Full text]
Salt intoxication - further considerations
T L Chambers, et al.
bmj.com, 17 Feb 2003
[Full text]
Distinguishing between salt poisoning and hypernatraemic dehydration
Roy Meadow
bmj.com, 14 Mar 2003
[Full text]
Re: Distinguishing between salt poisoning and hypernatraemic dehydration
Brian Morgan
bmj.com, 17 Mar 2003
[Full text]
Distinguishing Between Salt Poisoning and Hypernatraemic Dehydration
Roy Meadow
bmj.com, 18 Mar 2003
[Full text]
What if the wrong diagnosis was made?
Penny Mellor, et al.
bmj.com, 13 Feb 2006
[Full text]
Time to revisit allegations of salt poisoning?
Penny Mellor
bmj.com, 1 Nov 2006
[Full text]

http://www.hawaii.edu/medicine/pediatrics/pemxray/v3c14.html

Severe Hypernatremia - Salt Poisoning
Radiology Cases in Pediatric Emergency Medicine
Volume 3, Case 14
Loren G. Yamamoto, MD, MPH
Kapiolani Medical Center For Women And Children
University of Hawaii John A. Burns School of Medicine
 

     Paramedics are called to the home of a 3-year old 
male child because the child is noted to be poorly 
responsive.  Upon arrival 11 minutes after the 911 
called was received, the child is being carried by an 
adult outside the home toward the ambulance.  
Paramedics note the child to have agonal respirations.  
His EKG rhythm shows a bradycardia with multifocal 
PVC's.  He is mask ventilated, then intubated at the 
scene.  His rhythm improves to a sinus tachycardia.  He 
is noted to have fixed and dilated pupils at the scene 
with a Glascow coma score of 3.  He is transported to a 
rural emergency department.
     Exam in the ED:  VS T36.4 (axillary), P120, R 45 
(bag ventilation), BP 80/60.  Weight 10 kg.  He shows 
no significant neurological response.  His pupils are 
fixed and dilated.  He is small for age and emaciated in 
appearance.
     Initial laboratory studies:
ABG pH 7.02, pCO2 51, pO2 80
Na 193, K 3.3, Cl 146, Bicarb 13
Glucose 300, BUN 28, Creat 0.7
Drug screen negative
CBC WBC 14.2, 61%  segs, 11% bands, 26% lymphs,
     3 monos, Hgb 10.8, Hct 34.2, platelets 330,000.

     He is given IV fluids and furosemide.  He is then 
transferred to a children's hospital for further 
management.

     Upon arrival, his management is assumed by a new 
set of physicians.  His pupils are still fixed and dilated.  
No neurological response is noted.  Retinal 
hemorrhages are noted on fundoscopy.
     His laboratory tests are repeated:
Na 179, K 3.3, Cl 148, Bicarb 16
Glucose 169, Bun 23, Creat 0.9
 
     A CT scan of the brain is performed.

View CT scan.

     The image on the left is taken through the orbits.  
This cut is significant for hemorrhages noted over the 
surface of the retina.  The image on the right is taken 
through the brain and the lateral ventricles.  Although IV 
contrast has NOT been administered, the falx appears 
to be prominent.  This white enhancement represents 
hemorrhage in the interhemispheric space.  It is most 
prominent posteriorly.  This represents a posterior 
interhemispheric subdural hematoma.  There is 
evidence of cerebral edema and a slight midline shift.
     This CT scan is pathognomonic of a shaken child 
injury (see Case 1 in Volume 1, Toxic Infant with a Full 
Fontanelle).  The retinal hemorrhages are also highly 
indicative of child abuse.
     Retinal hemorrhages are usually identified on 
fundoscopic examination.  For medical legal reasons it 
may be best to have these substantiated by an 
ophthalmologist.  In subtle cases, the retinal 
hemorrhages may not be seen on direct 
ophthalmoscopy, thus, an ophthalmologist is usually 
needed to perform indirect ophthalmoscopy.  Most 
retinal hemorrhages are not visible on CT scan.  Thus, 
CT scan is not useful to rule out the presence of retinal 
hemorrhages.
     The finding of a prominent posterior falx on an 
unenhanced CT scan (no contrast) is indicative of a 
posterior interhemispheric subdural hematoma.  In an 
infant, this classically is seen in the shaken infant 
syndrome.  Blood also enters the subarachnoid space.  
Thus, if an LP is performed, it will most likely be grossly 
bloody.

     The hypernatremia in this case is extreme and is 
what makes this case particularly interesting.  One 
should be highly suspicious that this degree of 
hypernatremia may be long standing.  Thus, a rapid 
correction of this hypernatremia may be clinically 
detrimental.  It may be best to correct this slowly.  
Clinical hydration and neurological parameters should 
be followed closely to maintain a fluid balance most 
appropriate for the clinical situation.  Rapid fluid and 
electrolyte shifts may result in cerebral edema.  Fluid 
boluses may be required to correct hypovolemia and 
diuretics agents may be necessary to reverse cerebral 
edema; however, all such agents should be 
administered with extreme caution.
     According to the child's father, they were at the 
beach four hours before calling the ambulance.  The 
father states that the child was sitting in the water and 
began drinking salt water.  The father told him to stop 
and he did so.  The family went home and the child was 
playing and watching television.  Three hours after this 
episode, while at home, he complained of some 
abdominal pain and vomited once.  He then developed 
respiratory difficulty and rapidly worsened, prompting 
the 911 call.
     This degree of hypernatremia is not possible from 
drinking sea water for a short period of time.  Salt water 
near-drowning victims do not have this degree of 
hypernatremia.  Whenever the history of events as 
described by the caretaker is not consistent with the 
clinical findings, child abuse should be suspected.  In 
this case, the description of the child drinking some sea 
water at the beach in the afternoon, playing happily 
later that afternoon, then being found in a pre-arrest 
state a few minutes later by paramedics with extreme 
hypernatremia, retinal hemorrhages, and the posterior 
interhemispheric subdural hematoma noted on arrival at 
the hospital are an impossible sequence of events.
     Deliberate poisoning of children by their caretakers 
is a recognized syndrome of child abuse.  Sometimes, 
this is part of Munchausen Syndrome by proxy, but in 
most instances, it is just another form of inflicted harm 
on a child.  Non-accidental salt poisoning is a common 
type of chronic poisoning administered to children by 
caretakers.  Although many practitioners have not 
heard of this, it probably occurs more commonly than 
most believe.  It may only present to medical attention if 
the poisoning results in severe hypernatremia.
     Substantiated cases of salt poisoning are associated 
with severe hypernatremia, usually above 160 
mEq/liter.  It is sometimes in excess of 200 and is often 
in the 170 to 190 range.  This finding is often found in 
association with other signs of physical abuse such as 
fractures, retinal hemorrhages, burns, failure to thrive, 
and emotional deprivation.  In many of these instances, 
salt administration is used as a form of punishment.  
The following case examples of children with extreme 
hypernatremia are most illustrative.  In each instance, 
their parents' explanation for the hypernatremia was 
inconsistent with clinical findings.
     a) Parents of one child said they had used salty 
foods to treat the child's sudden onset of voracious 
appetite and thirst.  These behaviors were not observed 
while the child was hospitalized.
     b) A 5-year old child was given spoonfuls of salt by 
his mother for enuresis.  He was also noted to have 
burns on his feet and ankles.
     c) A 6-year old child died of hyperkalemia and 
hypernatremia after eating food his stepfather had 
heavily seasoned with "light salt" (a salt substitute 
consisting of KCl and NaCl) as punishment to break the 
child's habit of adding too much salt to his food.
     d) A 3-year old child was found with a cup of salt 
beside her crib.
     These instances are not as benign as they sound.   
For the serum sodium to elevate this high, the child 
must be deprived of water and/or salt must be forcibly 
administered.  In an attempt to re-create a serum 
sodium of 170 by mere salt administration as explained 
by the child's mother, investigators were able to 
administer only 20 grams of salt with great difficulty to 
the child which resulted in a maximum serum sodium of 
only 147.  This implies that salt must be forcibly 
administered.
     Some mothers were noted to put excessive amounts 
of salt in their infant's formula.  Although two teaspoons 
of salt may not sound like much, this amount is capable 
of elevating one's sodium to 200 although one's kidneys 
would generally excrete as much sodium as possible to 
prevent this from happening.  Two teaspoons of salt 
have a very strong taste and when added to formula, 
infants will reject it.  Thus, only when conventional fluids 
and formula are withheld, would an infant be desperate 
enough to drink such salt-laden formula.
     It is important to rule out organic causes of 
hypernatremia.  Renal function should be ascertained, 
and normalization of the serum sodium under hospital 
or foster care with normal feedings should be 
documented.  A urine sodium obtained while the child is 
hypernatremic should be obtained.  Hyperaldosteronism 
and diabetes insipidus are associated with low urine 
sodiums suggesting inappropriate sodium retention, 
while salt poisoning is associated with highly elevated 
urine sodiums (the kidneys are attempting to correct the 
hypernatremia by excreting sodium).  Hypernatremic 
dehydration secondary to gastroenteritis may mimic 
many of these findings, however, gastroenteritis and 
dehydration are usually associated with an elevated 
BUN, while salt poisoning does not result in as much 
azotemia.  While hypernatremic dehydration generally 
results in only modest sodium elevations, salt poisoning 
is associated with extremely high degrees of sodium 
elevation.
      The absence of polyuria by history makes diabetes 
insipidus less likely.  However, the presence of 
polydypsia is often seen in salt poisoning in an attempt 
to compensate for the hypernatremia and/or fluid 
deprivation.  Such children have been observed to lick 
water off windows and to drink from puddles, toilets, 
and fish tanks.
     Although accidentally (or out of ignorance) 
administering undiluted formula concentrate to infants 
usually results in hypernatremia, this type of 
unintentional hypernatremia is usually not as extreme, 
and the other associated findings such as failure to 
thrive or inflicted injuries are not present.
     Although initial interviews with parents guilty of salt 
poisoning their children did not reveal a willful attempt 
to harm the child, in repeated interviews months later, 
some parents confessed to wanting to kill their child.  In 
a few instances when salt poisoned children were 
returned to their parents, the salt poisoning behavior 
recurred despite the parents' knowledge that this was 
harmful.  This suggests that such perpetrators are 
severely disturbed, and these children should be placed 
in protected environments away from the perpetrator(s).
     Although speculative, it is likely that there are lesser 
degrees of salt poisoning that result in only modest or 
transient hypernatremia, or hypernatremia that is 
difficult to distinguish from hypernatremic dehydration 
due to gastroenteritis.  This may not be very harmful 
unless it leads to more severe salt poisoning.  It is 
probably prudent to routinely question the caretakers of 
any child with even mild hypernatremia for the 
possibility of salt administration.  If this inquiry is 
suspicious, or the child has any other high risk factors 
(failure to thrive, fractures, burns, inappropriate social 
behavior, developmental delays, etc.), frequent clinical 
and laboratory follow-up monitoring for signs of salt 
poisoning or other forms of child abuse and neglect 
would be in the child's best interest.  Reporting a case 
to the local child protective service authorities would 
enable one to determine if any other suspicious events 
have ever been reported about the child.

     In the case of our patient, one could speculate that 
this child was chronically salt poisoned.  Because of 
extreme thirst, he began drinking sea water when he 
went to the beach that day.  He also endured an acute 
or possibly chronic shaking episode(s) resulting in 
cerebral and retinal hemorrhaging.  This type of injury 
results in axonal shearing and cerebral edema.  If this 
was acute and severe enough, it may account for his 
vomiting and rapid demise.  Rapid changes in serum 
osmolarity may have also contributed to the cerebral 
edema.  The father's history of events could not 
possibly account for the child's clinical findings.  This 
child was small for age.  Failing to thrive at a mere 10 
kg at age 3 years, he was not brought in for routine 
medical care.  This family was previously known to the 
local child protective services, who had received reports 
in the past of suspected child abuse and neglect.

References
     Meadow R.  Non-accidental salt poisoning.  Arch Dis 
Child 1993;68:448-452.
     Bays J.  Child Abuse by Poisoning.  In:  Reece RM.  
Child Abuse:  Medical Diagnosis and Management.  
Philadelphia, Lea & Febinger, 1994, pp. 87-88. 

Return to Radiology Cases In Ped Emerg Med Case Selection Page
 


Return to Univ. Hawaii Dept. Pediatrics Home Page
 


Web Page Author:
Loren Yamamoto, MD, MPH
Associate Professor of Pediatrics
University of Hawaii John A. Burns School of Medicine
loreny@hawaii.edu


http://news.bbc.co.uk/1/hi/england/essex/4297345.stm
Salt poisoning mother is jailed
Petrina Stocker
Petrina Stocker poisoned her nine-year-old son, David, with salt

 

A mother has been jailed for five years for killing her nine-year-old son by putting salt in his hospital drip.

Petrina Stocker, of Romford, Essex, was convicted of manslaughter at the Old Bailey court on Thursday.

David Stocker died in Great Ormond Street Hospital in August 2001 from an overdose of 13 teaspoons of salt which his mother put into his drip feed.

On Friday at the Old Bailey, Stocker, 42, was also disqualified from working with children.

Judge Gerald Gordon told her she would have to live the rest of her life with what she had done.

After nine years with no suggestion of harm to David there has to be some force driving a mother to behave towards their own child as you did to David
 
Judge Gerald Gordon

 

"Public revulsion at behaviour such as this means that a custodial sentence is inevitable.

"You deliberately caused to be fed to him a substantial quantity of salt at a time when I accept he was seriously ill.

"After nine years with no suggestion of harm to David there has to be some force, incomprehensible to me and most people, driving a mother to behave towards their own child as you did to David."

On Thursday, the court heard David was ill for months but doctors were unable to make him better because his mother was misleading them.

Nicholas Hilliard, prosecuting, said the 13 teaspoons of salt poured into a milk drip feed was the last in a series of acts by Stocker.

Stocker had spiked two feed containers with around 18 teaspoons and the boy collapsed after the first one was given to him.

Food containers spiked

David, who had been a healthy karate champion, was in and out of hospital for five months and had turned into little more than skin and bones.

Mr Hilliard said David had been treated since February 2001 in Great Ormond Street Hospital and in Oldchurch Hospital, Romford, Essex, with his mother keeping a bedside vigil.

But doctors could not find what was wrong with him because of the various symptoms he displayed, such as loss of appetite and lethargy.

He said Stocker had put blood into urine samples and manufactured vomit samples, in addition to interfering with his intravenous drip.

Mr Hilliard said: "The episode of salt poisoning was the last in a series of acts done in an attempt to fabricate aspects of David's illness and to produce manufactured or misleading symptoms."


http://members.tripod.com/~Prof_Anil_Aggrawal/POISO014.HTML

MY FORENSIC ARTICLES IN SCIENCE REPORTER
THE FOLLOWING ARTICLE APPEARED IN THE
MARCH 1998 ISSUE
THE POISON SLEUTHS
DEATH BY COMMON SALT
 

-Dr. Anil Aggrawal
"Good morning doctor. Oh, my God, what are you doing today? You have the dead body of a very young female infant today. What happened to her? Please tell me."
"Good morning Tarun. The name of this 6 month old tiny girl is Babli. When she was born, her mother died due to some obstetric complication. Her father Ramdev soon remarried a nubile young girl Rekha. Before marriage she had promised that she would look after Babli well, but after marriage she often showed frank animosity towards this girl. She would not look after her well and would often not even feed her properly.."
"Oh, so she probably starved her to death?"
"Don't jump to conclusions Tarun. Look at her body. She doesn't look starved. An infant who dies of starvation looks just like a bag of bones. There is no fat in his or her body. But this girl is looking fairly well fed. What I was going to tell you is that Babli's grandmother Shanti Devi, i.e. Ramdev's mother, is still alive. She was not in favor of Ramdev getting married to Rekha in the first place. She probably knew that Rekha was not of good nature. Rekha was undoubtedly not feeding her well, but Shanti would always make up for her, giving her feeds in time. In fact that is why starvation was never a problem for Babli."
"Then how did Babli die?"
"Babli died of some respiratory disorder. At least that is what her physician told me just now. I will tell you what happened yesterday. Till yesterday morning, Babli was fine. Ramdev left for work in the morning at 8. As usual Rekha started seeing TV just after that, completely ignoring Babli. Seeing that it was her feeding time, Shanti prepared her feed, and filled her milk bottle with that. Just then a neighbor came to meet her, and she went to the drawing room to attend her, leaving the bottle in the kitchen. For half an hour they discussed about some religious programme they were going to attend that evening. After the guest left, Shanti went back to the kitchen, picked up the bottle and gave the feed to Babli. About half an hour later, Babli, who had consumed only about half the bottle by that time, started showing some strange symptoms. She started crying. It appeared as if she was irritable. She vomited twice. Shanti tells me that she had convulsions and muscular twitchings, fluttering of eyelids and of facial muscles. She displayed avid thirst. Shanti knows this because when she gave her water, she would feel a little relaxed, but after some time she would start crying again. But what was most prominent was that she was not breathing well. She had extreme difficulty in respiration. Shanti called Rekha for help, but she kept on seeing TV. Then Shanti phoned her son Ramdev, who immediately got in touch with their family doctor on phone. Dr. Saxena, the family doctor, arrived within 15 minutes, and found that the child was in real bad shape. Ramdev also reached home soon after. Dr. Saxena injected some medicines for respiratory distress, but although the injections seemed to help initially, they weren't of any lasting help. The doctor couldn't really understand what had happened to her. He thought that probably it was an attack of asthma. But what was most confusing was that Babli never displayed this symptom before. They were preparing to shift her to some big hospital for diagnosis and treatment, but before arrangements could be made, Babli died."
"Oh, I see. So Babli's body has been brought to you to let them know how she really died?"
"Yes, that's right. Actually Dr. Saxena was quite prepared to give the cause of death as asthma, but Shanti Devi immediately raised doubts. She has alleged that while her guest came to meet her, Rekha went to kitchen and mixed some poison in her feed. That is why Babli started having those strange symptoms immediately after having that feed. Rekha, of course, vehemently denied this, and Ramdev too refused to believe her mother, but she wouldn't listen to anyone. She phoned police immediately and called them to their house. The police ransacked the whole house and even searched all Rekha's belongings, but they couldn't find any poison anywhere in the house. That is what is lending weight to Dr. Saxena's theory that Babli indeed died of asthma. Every one including the police is thinking that Shanti Devi is making all this fuss, because she didn't like Rekha in the first place."
"Yeah, that looks likely to me as well. So what are you going to do now?"
"Tarun, since the matter has reached the police, Dr. Saxena preferred not to give cause of death and leave that to me. The body has been brought to me for post-mortem so that I could comment upon the cause of death."
"How do you think Babli died?"
"Tarun, the symptoms that Babli displayed surely point towards some respiratory trouble. But the symptoms also point towards a very unusual poison, a poison no one can ever think of. And that is why I have to be extra careful. You have got to remember, that I have a reputation as a poison sleuth, and so I can not afford to leave out even a remote possibility as far as administration of poison is concerned.
"Come on doctor. No poison was ever found in the possession of Rekha. Not even that, there was no poison in the whole house. How could anyone administer any poison to Babli?"
"Yeah, that sounds very convincing to the police, and that's why they think Shanti Devi is a nut. But I don't think so. I know of a poison which produces exactly the same symptoms as displayed by Babli..."
"Please don't talk in riddles doctor. Explain everything to me in clear terms."
"Yeah sure. To test my theory, I took some of the stomach contents of Babli and subjected them to chemical analysis. Not to my great surprise, they have shown very high concentrations of salt. Then I took Babli's blood and examined it chemically too. And again it showed very high levels of sodium. I am inclined to think that Babli has been killed with ...."
"With what?"
"With common salt!"
"Common salt? You must be joking doctor. How can anyone be killed with common salt. This is what all of us take daily in our food. Well my father is so fond of common salt he always puts an extra teaspoonful of common salt in his dal."
"Yeah, this is what is not known to most people. Common salt is a deadly poison. The only difference between this and other commonly known poisons is that one has to administer rather large quantities to kill with it. One or two teaspoonfuls of salt would not kill an adult but can easily kill a 6 month old baby. Come to think of it, even an adult can be killed with common salt. Only he would have to be fed larger quantities. About 40 teaspoons of common salt would kill an adult human being too."
"Well the information is getting interesting. Why don't we begin from the beginning doctor?"
"Tarun, before you start visualizing it as a villain, I must hasten to add that there is no doubt that common salt or sodium chloride (NaCl) is indeed essential to all life. It is the basic milieu of mammals. It occurs as colorless cubic crystals or as white crystalline powder. When salt is administered in larger quantities than required, it can cause death too. One teaspoonful of salt weighs about 5 gms. Normal uptake by adults is about 5 to 15 g daily or about 1-3 teaspoonfuls. Children consume less. Salt is even necessary for normal growth in children. The sodium needed for growth is 0.5 mEq/kg from birth to 3 months of age, which decreases to 0.1 mEq/kg at 6 months. The average content of sodium in human milk is 7 mEq/L and that in cow milk is 21 mEq/L ..."
"Doctor, you started your answer telling me weights in grams, but suddely you have switched to milliEquivalents. I don't really understand the concept of milliEquivalent so well. And why should we talk in milliEquivalents, when we can talk equally well in grams?"
"Tarun, in ordinary day-to-day life, it is useful and convenient to talk in grams and kilograms, but chemists and biochemists often find it easier to talk in terms of equivalent weights because of several reasons. You would surely agree that chemists are mainly interested in chemical combinations, and Equivalent weights are actually measures of the characteristic proportions in which given elements combine. For this reason, this term is also often known as Combining weight. Equivalent weights can be used for elements as well as for compounds. In plain and simple words, they are the measure of the combining capacity of a substance with other chemical substances. Well, even if after this, you are feeling inconvenient with equivalent weights, let me add that 1 mEq of sodium equals 23 mg and that of salt equals 58.5 mg. I would also like to tell you that 1 milliequivalent would be equal to 1/1000 Equivalent weight. Now when I say that the sodium needed for growth is 0.5 mEq/kg from birth to 3 months of age, I simply mean that for every kg of baby's weight, 0.5 mEq of sodium is needed. Thus if the infant weighed, say, 4 kg, he would need 4x0.5 or about 2 mEq of sodium. Since 1 mEq of sodium is 23 mg, it would mean that the infant would need about 46 mg of sodium daily. This much sodium would be available from about 117 mg of salt. Thus in effect, a baby from birth to 3 months needs about 117 mg of salt. Similarly you can convert other values which I told you earlier in grams. I told you the sodium contents of human milk, because this is the only food available to young babies."
"Oh, I see. Doctor, you were saying that 40 teaspoons of salt would kill even an adult?"
"Yes Tarun. The toxic oral dose of salt is 0.5 to 1.0 gm/kg. For a 70 kg man this amounts to about 35-70 gm. That means that if an adult consumes about 70 g of salt (or about 14 teaspoons), he would be severely poisoned. The estimated fatal amount, i.e. one that would kill is about 1 to 3 gm/kg. This amounts to about 70-210 gm (or about 40 teaspoonfuls) of salt for a 70 kg man."
"Oh, that is interesting. Has salt been used to kill people before?"
"Tarun, interestingly the Chinese used saturated salt solution for suicide. Salt intoxication and death have occurred when it is used to induce vomiting."
"Why would one want to vomit anyway?"
"When somebody has consumed some poison, it is imperative to remove as much poison from his stomach as possible. One of the best ways to do this is to make the person vomit. It has been known from ancient times, that a strong solution of common salt induces vomiting, and that is why for centuries, it was a favorite method of doctors to induce vomiting in poisoned patients. But it is known now that saturated solution of salt itself can cause salt poisoning, so it is rarely used these days."
"Oh, I see. So you are suggesting that Rekha mixed salt in Babli's feed when Shanti was talking to her neighbor in the drawing room."
"Babli's stomach contents, and her blood analysis definitely tells me that salt has been administered to her. I have examined her brain tissue under the microscope too, and I have found that the capillaries of her brain are damaged. They are full of blood, and there are innumerable bleeding points - technically known as hemorrhages- in her brain. There is bleeding underneath one of the coverings of the brain. We call it subarachnoid bleeding, because it occurs underneath the covering known as arachnoid mater. Many venous channels of her brain - technically known as dural sinuses- are blocked. All these findings are strongly in favor of salt poisoning. I have no doubt that someone had indeed mixed salt in her feed. To tell you the truth now, I surreptitiously picked up the milk bottle from Ramdev's house and have analyzed it for salt. It showed as much as 11 g of salt and it was only half full. It means that the full bottle must have contained about 22 g of salt. In other words, Rekha must have put about 4 teaspoonfuls of salt in Babli's bottle when Shanti was talking to her neighbor. There was no other person in the house at that time, and no one except Rekha could have done that."
"Rekha indeed is a wicked woman. It is surprising she knew that salt can kill."
"I have enquired about Rekha's background. She studied biochemistry in college, although she dropped out of college later. Surely when she was studying biochemistry she must have learnt that salt is a poison and can be used to kill infants. It is indeed a rather safe poison, because you don't need to buy anything. It is available right at everyone's home. And the police won't suspect you either, because they won't find any poison....any traditional poison, I mean. Come let us tell the police that Babli didn't die of asthma. It is Rekha who has added salt to Babli's feed to kill her."
"Oh, how very clever of you doctor. This was a most interesting discussion. Tell me what are you going to tell me the next time?"
"Tarun, next time, I would tell you about a very interesting poison- iodine"
 

***
(To protect the identity of the individuals, their names, as well as the various dates of occurrence have been changed)
***
dr_anil@hotmail.com

IMPORTANT NOTE: THIS MATERIAL IS COPYRIGHTED BY THE AUTHOR AND MAY NOT BE REPOSTED, REPRINTED OR OTHERWISE USED IN ANY MANNER WITHOUT THE WRITTEN PERMISSION OF THE AUTHOR


SALT POISON CASE EXCLUSIVE

http://www.mirror.co.uk/news/tm_objectid=16425374&method=full&siteid=94762&headline=salt-poison-case-exclusive-name_page.html

THE other day I tried to poison myself with four and a half teaspoons of salt.

That, apparently, is what Ian and Angela Gay did to three-year-old Christian Blewitt, the little boy they had taken into their home and planned to adopt.

He'd been behaving badly, so they force-fed him the salt to teach him a lesson. He went into a coma and, four days later, he died.

That at least, is what the prosecution says ...

The Gays were arrested, tried and convicted of poisoning him with salt. Lock them up and throw away the key, you might say - unless, of course, they didn't do it.

Let's presume for a moment that Ian and Angela are what their friends and family say they are - a loving and lovely couple, gifted, rich, and kind - and the only thing they lacked in life was children.

Angela's womb was removed when she was 16 because of fears of cancer.

So let's test the science that underlies the deduction - because no one saw it happen - that blond-haired Christian must have been poisoned with salt by mouth.

That's why I poured four and a half teaspoons of salt into a pint of water, took a hefty swig - and threw up.

Because I was reporting the story for both BBC radio and TV, I had to do it again for the camera.

I drank five times and I vomited five times, a wholly involuntary reflex. You just can't poison yourself with salt.

Now I challenge the Attorney General, the head of the Crown Prosecution Service, the police officers, the lawyers and the experts who had a hand in the conviction of Ian and Angela Gay to knock back a pint of water with four and half teaspoons of salt in it.

If they can't, then they might consider they could have helped commit a terrible wrong.

The impossibility of force-feeding salt down anyone's throat without them throwing up is just the first of a series of grave questions which cast doubt on whether Ian and Angela poisoned Christian.

To begin with, the desperately ill boy was raced to hospital in Ian's sports car.

There, doctors realised that he had a terrifyingly high level of salt in his blood - but throughout the four days until his death, they couldn't get the salt level down.

Quite simply, the moment Christian got to hospital his salt level should have gone down because the source - his "evil" adopting parents - could no longer poison him.

So if it didn't go down, then the cause of the salt overload had to be something else.

As it happens, poor little Christian was not a well boy. The post mortem showed that he had actually suffered a heart attack some time before he met the Gays.

Why would a healthy boy have a heart attack unless he was suffering from something else?

Had Christian died from arsenic or cobra venom, I'd shut up. But in fact he died because he had too much of a substance that occurs perfectly naturally in the body.

The number one cause of too much salt in the body is salt diabetes or diabetes insipidus. Like classic sugar diabetes, if undetected, salt diabetes can kill.

But one of the experts in the case proclaimed, at a pre-trial meeting: "He clearly doesn't have diabetes insipidus."

So the jury heard nothing about salt diabetes.

Judge Pictures summed up: "Very sophisticated testing was done to rule out all known existing disorders which might have caused that high level of salt."

That's that, then. Or is it?

The Gays were convicted on the basis of complex calculations - and those sums were based on the "seminal paper" on salt poisoning, which plays up child abuse in the context of Munchausen's Syndrome By Proxy.

That's no surprise because it was written by Professor Sir Roy Meadow, the rogue child abuse expert who wrongly accused cot death mothers Sally Clark, Angela Cannings and Donna Anthony of killing their babies.

Sir Roy has been struck off - though he is appealing that decision - but he is still an authority on salt poisoning. Or is he?

Prof Ashley Grossman, a neuro-endocrinologist at St. Barts, fears that at least some of the 12 cases of salt poisoning in Meadow's paper could be, in fact, salt diabetes.

Prof Jean Golding, an epidemiologist at Bristol University, says Meadow's paper lacks control groups, and is "unscientific and unreliable".

What doomed Ian and Angela Gay was the exclusion of salt diabetes - the number one natural cause of too much salt in the body - from their defence. It can be caused by things going wrong in two different parts of the body - the kidney and the brain, especially the pituitary gland.

The experts tested the kidney and the adrenal functions and they were normal.

And the pituitary gland? No tests were done because it has gone missing.

So have the medical records for a large part of Christian's short life - but we've seen medical notes diagnosing Christian as suffering from hydrocephalus - water on the brain.