Acetaminophen overdose

Acetaminophen overdose is an acute or cumulative toxic exposure occurring when ingestion of the analgesic and antipyretic drug exceeds therapeutic thresholds, representing the leading cause of acute liver failure across pediatric and adult populations Pathophysiologically, excess drug saturates normal glucuronidation and sulfation pathways, shunting metabolism through cytochrome P450 enzymes to produce the toxic electrophile N-acetyl-p-benzoquinone imine (NAPQI) Depletion of hepatic glutathione ...

Pathophysiologically, excess drug saturates normal glucuronidation and sulfation pathways, shunting metabolism through cytochrome P450 enzymes to produce the toxic electrophile N-acetyl-p-benzoquinone imine (NAPQI) Depletion of hepatic glutathione reserves allows unbound NAPQI to bind cellular macromolecules, triggering mitochondrial dysfunction, centrilobular hepatic necrosis, and potential acute tubular injury

Clinically, affected individuals may initially present with nonspecific gastrointestinal symptoms or appear asymptomatic before progressing to right upper quadrant pain, marked aminotransferase elevation, jaundice, coagulopathy, and potentially fatal fulminant hepatic failure

Clinically, affected individuals may initially present with nonspecific gastrointestinal symptoms or appear asymptomatic before progressing to right upper quadrant pain, marked aminotransferase elevation, jaundice, coagulopathy, and potentially fatal fulminant hepatic failure