Fig. 1From: Benefit of dual-chamber pacing with Closed Loop Stimulation in tilt-induced cardio-inhibitory reflex syncope (BIOSync trial): study protocol for a randomized controlled trialStudy flowchart. ECG electrocardiogram, DDD-CLS dual-chamber pacing with Closed Loop Stimulation, IPG pacemaker, ODO pacing ‘off’, R randomization, TT Tilt-Table testBack to article page