Spontaneous coronary artery spasm during coronary angiography in a patient with exercise-induced ST segment elevation
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Updated: Oct 3, 2026

Measurement of Myocardial Lactate Production for Diagnosis of Coronary Microvascular Spasm
Published on: September 17, 2021
Abstract:
We describe a patient with a history of early morning chest pain who developed ST segment elevation during a treadmill exercise test. Severe coronary artery stenosis was identified initially and was relieved after intracoronary administration of nitroglycerin. A history of vasospastic angina in this patient facilitated prompt diagnosis.
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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