Conclusions
Tilt-positive patients who develop reflex syncope have statistically
highly significantly lower systolic and diastolic blood pressure and
heart rate, albeit small in clinical terms, compared with tilt-negative
patients. Advanced age and hypertension, independent of therapy, are two
important factors diminishing hypotensive susceptibility to tilt-induced
reflex syncope. These hemodynamic differences in reflex syncope
susceptibility may be considered as contributing to the understanding of
hypotensive susceptibility within the phenomenon of vasovagal syncope.