• T Y Chan, A Y Chan, and J A Critchley.
• Department of Clinical Pharmacology, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, NT.
• Singap Med J. 1993 Aug 1;34(4):299-302.

AbstractFrom 1989 to 1991, 104 Chinese patients were admitted to the Prince of Wales Hospital with paracetamol poisoning. Only 11 subjects had a plasma paracetamol concentration above the published treatment line. Intravenous N-acetylcysteine (NAC) was completely effective when given within 8 hours (3 patients), while late treatment with NAC at 16 and 26 hours after overdose (2 patients) was ineffective in preventing liver damage as evidenced by elevations in plasma alanine transaminase concentrations. Of the 6 patients receiving NAC between 10 to 15 hours, two had liver damage. Two other subjects who presented late or in whom a plasma paracetamol concentration was not measured also developed liver damage. Fortunately, none of these 6 subjects developed hepatic encephalopathy. We recommend that a standard protocol be readily available for junior hospital staff to use when treating patients with paracetamol overdosage.

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