Episode 933: Benign Convulsions with Gastroenteritis
Release Date: 12/02/2024
Emergency Medical Minute
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Contributor: Aaron Lessen, MD Educational Pearls: What is a Nursemaid's Elbow? A condition in which an elbow gets partially pulled out of place (a radial head subluxation) Usually happens in kids under 5 because the ligaments around their elbow are still loose. A common situation is when an adult pulls a child up by the hand or swings them by the arms. The sudden tug causes the radius to slip out of its normal spot at the elbow joint. How are they identified? These don’t normally need an xray The child will often hold their arm close to their side and refuse to use it There’s usually no...
info_outlineContributor: Alec Coston MD
Educational Pearls:
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Causes of seizures in a fairly well-appearing child with diarrhea:
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Electrolyte abnormalities: hypocalcemia, hyponatremia
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Also hyperkalemia which causes arrhythmias and syncope - can appear like seizures
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Hypoglycemia
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If the child has diarrhea and appears very sick, differential diagnosis may include:
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Hemolytic uremic syndrome (HUS):
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simultaneous occurrence of microangiopathic hemolytic anemia, thrombocytopenia, and acute kidney injury
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Typically caused by Shiga-like toxin producing Escherichia coli (also known as EHEC, or enterohemorragic E. coli)
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One of the main causes of acute kidney injury in children
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Toxic ingestions such as salicylates, lead, or iron
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In this case, the child had a seizure but appeared well and was afebrile:
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Consult with neurology led to a diagnosis of benign convulsions with mild gastroenteritis (CwG)
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First identified in 1982 in Japan
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Viral gastroenteritis with diarrhea and convulsions but does not include fever, severe dehydration, or electrolyte abnormalities
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Uncommon illness caused by rotavirus and norovirus pathogens
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Criteria for discharge is similar to a febrile seizure - the patient had one seizure that lasted less than 15 minutes and he quickly returned to his baseline, so he was able to be safely discharged home
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This diagnosis does not predispose him to epilepsy later in life
References
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Lee YS, Lee GH, Kwon YS. Update on benign convulsions with mild gastroenteritis. Clin Exp Pediatr. 2022 Oct;65(10):469-475. doi: 10.3345/cep.2021.00997. Epub 2021 Dec 27. PMID: 34961297; PMCID: PMC9561189.
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Mauritz M, Hirsch LJ, Camfield P, et al. Acute symptomatic seizures: an educational, evidence-based review. Epileptic Disorders. 2200;1(1). doi:https://doi.org/10.1684/epd.2021.1376
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Noris, Marina*; Remuzzi, Giuseppe*, †. Hemolytic Uremic Syndrome. Journal of the American Society of Nephrology 16(4):p 1035-1050, April 2005. | DOI: 10.1681/ASN.2004100861
Summarized by Meg Joyce, MS1 | Edited by Meg Joyce & Jorge Chalit, OMS3
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