Coronary artery spasm is a temporary constriction of an artery in the heart. The spasm can slow or stop blood flow through the artery. The main symptom experienced is chest pain.
Review Date 8/2/2017
Updated by: Michael A. Chen, MD, PhD, Associate Professor of Medicine, Division of Cardiology, Harborview Medical Center, University of Washington Medical School, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.