Syncope - 2. Tilt Table Testing and Electrophysiologic Studies
In electrophysiologic studies (EPS), recording and stimulating electrodes are inserted into all 4 cardiac chambers via right- or left-sided cardiac catheterization. Atria are paced from the right or left atrium, ventricles are paced from the right ventricular apex or right ventricular outflow tract, and cardiac conduction is recorded. Various mapping techniques are available. Programmed stimulation techniques may be used to trigger and terminate a reentrant arrhythmia.
Tilt table testing is used to evaluate syncope in Younger, apparently healthy patients and Elderly patients when cardiac and other tests have not provided a diagnosis. Tilt table testing produces maximal venous pooling, which can trigger vasovagal (neurocardiogenic) syncope and reproduce the symptoms and signs that accompany it (nausea, light-headedness, pallor, hypotension, bradycardia).
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Professor Armen Astvatsatryan, MD, PhD, ScD, FESC. First Dean and Founder of Faculty of Public Health of European