Myocardial bridging increases the risk of coronary spasm.

  title={Myocardial bridging increases the risk of coronary spasm.},
  author={Hiroki Teragawa and Yukihiro Fukuda and Keiji Matsuda and Hidekazu Hirao and Yukihito Higashi and Togo Yamagata and Tetsuya Oshima and Hideo Matsuura and Kazuaki Chayama},
  journal={Clinical cardiology},
  volume={26 8},
BACKGROUND Myocardial bridging (MB) has been associated with cardiac events. Whether coronary spasm is one factor contributing to those events is unknown. HYPOTHESIS This study investigated whether the likelihood of coronary spasm is increased in patients with MB. METHODS A spasm-provocation test was performed by infusing acetylcholine into the left coronary artery in 114 Japanese patients with chest pain. The test result was defined as positive when the diameter of the coronary artery was… CONTINUE READING


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