Improvement in low upright baroreflex sensitivity is associated with positive clinical effect of orthostatic training.

Aim: To assess the clinical efficacy of orthostatic training (OT) and its effect on the autonomic activity.

Methods: OT was performed in 38 patients (13 males, age 36.4 ± 15.

Clinical characteristics associated with bradycardia and asystole in patients with syncope undergoing long-term electrocardiographic monitoring with implantable loop recorder.

Background: The aim of this retrospective single center cohort study was to assess the occurrence of bradycardia during implantable loop recorder (ILR) monitoring in patients with unexplained syncope and negative conventional testing and to identify clinical predictors of bradycardia and pacemaker implantation.

Methods: An ILR was implanted in 112 patients (31 men, 81 women, mean age 64 ±13 years) with syncope which was not explained after conventional diagnostic work-up. Clinical variables were compared between patients with and without pacemaker implantation.

Gene Polymorphism of the Adenosine A2a Receptor in Patients with Vasovagal Syncope.

Background: Adenosine may play a role in the pathogenesis of vasovagal syncope (VVS). The aim of the study was to evaluate the adenosine A(2A) receptor gene 1083 T > C polymorphism in patients with syncope and its possible association with results of head-up tilt test (HUT).

Methods: Three hundred and forty-seven consecutive patients (mean age 47.