Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.See eligibility criteria
- Patients 18 and older
- Admitted to the hospital for initiation of dofetilide or sotalol on the basis of routine electrophysiologic care (no patients will specifically receive dofetilide or sotalol because of their participation in this research study).
- Patients <18 years of age
- Patients admitted for dose adjustments, or following non-standard dosing protocols, will be excluded
- Patients without the ability to understand and sign a written informed consent form, which must be obtained prior to initiation of study