Assessment of the Vasodepressor Reflex in Carotid Sinus Syndrome

Abstract

The current definition of ≥50 mm Hg SBP fall failed to identify one third of patients with isolated vasodepressor form. A cut-off value of symptomatic SBP of ≤85 mm Hg seems more appropriate, but it is unable to identify cardioinhibitory forms. In asystolic forms, atropine testing is able to distinguish a cardioinhibitory form from a mixed form.