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Poisning Center › Agricultural-poisons › Paracetamol (acetaminophen)
Paracetamol (acetaminophen)
 
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It is the most commonly used antipyretic
Route :
Ingestion
Fatal Dose :
10 to 20 gms
Fatal Period :
2 to 4 days
Mechanism of action :
It is absorbed rapidly fro the GIT and metabolized in the liver. A small part is converted by the liver enzyme into N-acetyl-p-benzoquinoneimine{NABP}. Due to overdose, NABP accumulates and causes centrilobular liver necrosis.
Clinical Picture :
• In few hrs: patient has anorexia, nausea , vomiting, diaphoresis, hypotension, tachycardia and dyspnoea • After 1 to 2 days: the discomfort disappears • After 2 to 4 days: there is vomiting, jaundice, hepatic pain, bleeding, hypoglycemia, confusion, coma, metabolic acidosis and coarse flapping tremors of hands • Cardiac arrhythmias, hemorrhagic pancreatitis, disseminated intravascular coagulation
Treatment :
• Gastric lavage • Activated charcoal • Antidote: N-acetyl cysteine is a specific antidote and is most effective if used within 8 hours. It is given orally or i.v. . Methionine is also used as an antidote, although it is less effective • Symptomatic
08/06/2019 12:26:23 Paracetamol (Acetaminophen)
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