Table 1.
Risk Factor |
Older age |
Female gender |
Structural heart disease |
HIV infection |
Low potassium level |
Low prothrombin level |
Higher methadone dose |
Cytochrome P450 3A4 inhibitor use |
Alcohol use |
Cocaine use |
Prolonged baseline QTc |
Family history of prolonged QTc |
History of drug-induced torsades de pointes |
Antidepressant use |
Antipsychotic use |
Antiretroviral use |
Antibiotic use |
Potassium-lowering agent use |
Magnesium-lowering agent use |