Impact of Pacing Site and AV Delay on Blood Pressure in Hypertensive Patients

Inclusion Criteria: 1. Patient has hypertension with systolic blood pressure \>140 mmHg despite at least one antihypertensive medication. 2. Patient has a clinical indication for a pacemaker or an electrophysiology study involving introduction of transvenous electrophysiology catheters to the right atrium and/or right ventricle. 3. Patient is willing and able to provide informed consent Exclusion Criteria: 1. Patient is in atrial fibrillation at the time of the study 2. Patient has an ejection fraction less than 45% 3. Patient has a history of symptomatic heart failure, regardless of EF 4. Patient is undergoing an ablation procedure for a bypass track (WPW) 5. Patient has a history of resuscitation from ventricular fibrillation or sustained ventricular tachycardia