Multicentre, prospective, double blinded, randomized study designed as an intrapatient comparison to evaluate the effects of the Biotronik Closed-loop Stimulation algorithm on prevalence and timing of haemodynamic variations and clinical prodromes induced by head-up tilt test in patients underwent pacemaker implantation for refractory cardioinhibitory vasovagal syncope.
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Haemodynamic response during head up tilt test.
Timeframe: 45 minutes
Incidence of prodromal symptoms during head up tilt test.
Timeframe: 45 minutes
Incidence of syncope during head up tilt test.
Timeframe: 45 minutes