Comparison of tilt angles and provocative agents (edrophonium and isoproterenol) to improve head-upright tilt-table testing.

Patients with syncope underwent head-up tilt testing at 60 degrees and 80 degrees followed by edrophonium or isoproterenol challenge when indicated. The 80 degrees tilt protocol and edrophonium provocation were found to be as effective or more effective in eliciting neurally mediated syncope in susceptible patients.

RCT Entities:   Population Interventions Outcomes