Chlorate hydrate is commonly used for neonatal sedation, but blood lev
els are infrequently monitored, reflecting an underemphasis of acute t
oxic effects. This report describes a case of chloral hydrate toxicity
in a term infant with cardiac, renal, neurologic, bladder and gastroi
ntestinal dysfunction. The effects of exchange transfusion are describ
ed as well as pharmacokinetics.