Methadone-Induced QT Interval Prolongation in a Narcotic Treatment Center

"Specific Aim 1: independent risk factors for methadone-associated QTc interval prolongation will be determined through retrospective analysis of electronic medical records of methadone-treated patients in a narcotic treatment center. Patients will be asked to come to the Narcotic Treatment Center for one 12-lead ECG~Specific Aim 2: QTc intervals from ECGs generated by the AliveCor® heart monitor will be compared prospectively to simultaneous twelve lead ECGs for validation purposes in the methadone-treated patients in a narcotic treatment center."