Pacemaker Therapy for Prevention of Syncope in Patients With Recurrent Severe Vasovagal Syncope: Second Vasovagal Pacemaker Study (VPS II): A Randomized Trial

CONTEXT: Three previous small randomized trials have reported that pacemaker therapy is beneficial for patients with severe recurrent vasovagal syncope. However, because these trials were not double blind, they may have been biased in their assessment of outcomes and had a placebo effect of surgery. OBJECTIVE: To determine if pacing therapy reduces the risk of syncope in patients with vasovagal syncope.