• L E Schmidt and K Dalhoff.
• Departments of Hepatology A and Clinical Parmacology Q, Rigshospitalet, Copenhagen, Denamark.
• Aliment. Pharmacol. Ther. 2002 Aug 1;16(8):1539-45.

BackgroundPatients admitted with paracetamol overdose frequently receive one or more types of regular medication that may affect the outcome of the paracetamol intoxication.AimTo describe the use of regular medication in patients with paracetamol poisoning and to evaluate its effects on morbidity and mortality.MethodsSeven hundred and thirty-seven consecutive patients admitted with paracetamol poisoning were studied and the use of regular medication was recorded. The relative risk of hepatic encephalopathy, death or liver transplantation, severe hepatic dysfunction and severe hepatocellular injury was evaluated by multivariate analysis.ResultsRegular medication was received by 332 patients (45%). Medication with benzodiazepines (105 cases), antidepressants (100 cases), neuroleptics (75 cases), paracetamol (58 cases), oral contraceptives (51 cases), beta-agonists (40 cases), opioid analgesics (32 cases) and anticonvulsants (27 cases) predominated. Regular medication with opioid analgesics was associated with a high incidence of hepatic dysfunction (odds ratio, 5.39; 95% confidence interval, 1.13-25.8). No significant findings were demonstrated for benzodiazepines, antidepressants, neuroleptics, paracetamol, oral contraceptives, beta-agonists or anticonvulsants in the multivariate analysis.ConclusionsRegular medication with psychotropic medication, analgesics, oral contraceptives, beta-agonists or anticonvulsants was frequent in patients admitted with paracetamol poisoning. Medication with opioid analgesics was associated with a significantly increased incidence of hepatic dysfunction, whereas the other medications did not appear to affect the outcome of the paracetamol intoxication.

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