Abstract Background/Introduction In a significant proportion of patients with neurally-mediated syncope (NMS), the mechanism remains largely undetermined. Adenosine has been proposed as central humoral factor in various forms NMS: high Plasma Levels (ADP) are encountered vasovagal (VVS), low ADP non-prodromes (NPS), while situational SS less well determined. Purpose We sought to assess differen...

The study aim was to assess sympathetic vasomotor response (SVR) by using pulsed wave Doppler (PWD) ultrasound in patients with multiple system atrophy (MSA) and correlate with the tilt table study. We recruited 18 male patients and 10 healthy men as controls. The SVR of the radial artery was evaluated by PWD, using inspiratory cough as a provocative maneuver. The response to head-up tilt was s...

PURPOSE An association between baroreflex sensitivity (BRS) and the response to tilt training has not been reported in patients with neurally mediated syncope (NMS). This study sought to investigate the role of BRS in predicting the response to tilt training in patients with NMS. MATERIALS AND METHODS We analyzed 57 patients who underwent tilt training at our hospital. A responder to tilt tra...