Table 4.
A Partial List of Agents Associated With QT-Interval Prolongationa
| Antimicrobial agents |
| Macrolide antibiotics (eg, erythromycin, clarithromycin) |
| Fluoroquinolones (eg, levofloxacin) |
| Antifungal agents (eg, ketoconazole) |
| Pentamidine |
| Antiarrhythmic drugs |
| Class 1a antiarrhythmics (eg, quinidine) |
| Class 3 antiarrhythmics (eg, amiodarone) |
| Psychotropic medications |
| Tricyclic antidepressants (eg, amitriptyline, doxepin) |
| Typical antipsychotics (eg, thioridazine) |
| Atypical antipsychotics (eg, ziprasidone) |
| Miscellaneous |
| Methadone |