Veterinary and human toxicology 1995-Feb
Mobitz type I heart block after pokeweed ingestion.
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The leaves of Phytolacca americana (pokeweed), when ingested, typically produce a self-limited but severe gastroenteritis characterized by intense vomiting and frothy diarrhea. Although cardiac effects have been reported in previous cases of pokeweed ingestion, no cardiac toxin has ever been identified in pokeweed. We report the case of a family who ingested raw and/or cooked pokeweed leaves, and 1 member who developed a Mobitz type I heart block associated with vomiting which resolved after i.v. promethazine. This suggests the possibility that some cardiac effects of pokeweed are secondary to the increased vagal tone seen with severe gastrointestinal colic.
