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Background:To compare head‐up tilt testing (HUT) outcomes and hemodynamic responses, and the prevalence and correlates of prodromes, in elderly and younger patients with suspected vasovagal syncope (VVS).Methods:Consecutive outpatients with a history of recurrent unexplained syncope underwent HUT by being tilted to 70°; the test was potentiated by the administration of 300 μg of nitroglycerine after 20 minutes. Occurrence of VVS and hemodynamic responses during passive and nitroglycerine phases of HUT were evaluated; symptoms preceding HUT‐induced syncope were recorded, together with heart rate and arterial blood pressure values....
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