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Updated: Oct 18, 2025

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
Published on: March 21, 2013
Interesting presentation of a broad complex tachycardia during the head up tilt table test
Muhammad Taha Khan1, Aamir Hameed2, Yawer Saeed3
1Cardiac Electrophysiology, National Institute of Cardiovascular Diseases, Karachi, Sindh, Pakistan.
Abstract:
Broad complex tachycardia (BCT) during head up tilt test (HUTT) is infrequent. Electrophysiology Study (EPS) plays an important part in further differentiation of BCT. We present a case of BCT during HUTT in a patient presenting with presyncope which later on EPS with 3D mapping was diagnosed as ventricular tachycardia. This case highlights the unusual occurrence of BCT during HUTT, the differential diagnosis of BCT and the utility of EPS to reliably identify the type and origin of BCT.
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Exercise Stress Test
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes

