24-hour ambulatory blood pressure monitoring (ABPM) is able to detect systolic blood pressure (SBP) drops that allow to discriminate patients with reflex syncope from controls. One episode of daytime SBP <90 mmHg or one episode of daytime SBP <100 mmHg, if mean 24-hour SBP is <125 mmHg, is the best cut-off for the identification of reflex syncope patients with hypotensive susceptibility.~The hypothesis of the present proof-of-concept study is that a therapeutic strategy aimed to increase arterial blood pressure can prevent SBP drops and (hopefully) reduce syncope recurrences.~If the study hypothesis will be confirmed, the magnitude of increase of SBP needed to abolish SBP drops will be also assessed.
SynABPM 2 proof-of-efficacy is a retrospective, multicentre, observational study performed in patients affected by hypotensive reflex syncope who had performed two ABPMs, one before and another after any therapeutical intervention aimed to increase arterial blood pressure