COVID-19 tools and resources: symptom checker, safety measures, and visitor, testing and vaccine info. Learn more.
COVID-19 tools and resources: symptom checker, safety measures, and visitor, testing and vaccine info. Learn more.
This study will record surface electrocardiograms (ECGs) during temporary VAOT pacing in patients with Medtronic cardiac resynchronization therapy defibrillators (CRTDs) to assess ECG morphologies with current CRTD settings compared to temporary VAOT pacing and intrinsic rhythm. Patients with a history of left bundle branch block (LBBB) will be studied.