Duration of Participation and Withdrawal: Patients will be part of the study until the follow-up with the study cardiologist after the 15-day monitoring period within 1 - 2 weeks of monitoring completion. Patients will be free to withdraw from the study at any time without providing any reason and without any penalty or loss of benefits they are entitled and the number of withdrawals will be monitored. However, as these monitoring devices will serve to allay fear of arrhythmia or death among patients, the investigators expect very few withdrawals. There will be no restrictions on medications or procedures during the study period.