Myocardial bridging

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[edit] Discussion of Myocardial bridging

  • AKA tunneled artery.
  • Myocardial bridging is a congenital anomaly characterized by myocardial encasement of a coronary artery segment, which normally courses epicardially.
  • Symptoms usually do not develop before the third decade of life.
  • It is clinically important because of its association with myocardial ischemia and secondary complications


  • Myocardial bridges are mostly seen on the LAD mid segment.
  • Multiple muscle bridges can involve either the same vessel or different coronary arteries and their branches.


  • Several mechanisms have been postulated to explain ischemia resulting from myocardial bridging of a coronary artery, including vasospasm and systolic kinking of the artery that results in direct physical damage to the underlying endothelial cells.


  • There is no need for treatment in asymptomatic patients.
  • In symptomatic cases, the primary step is medical treatment. This includes ß-blockers, calcium channel blockers, and antiplatelet agents

[edit] Imaging Findings for Myocardial bridging

[edit] CT and MRI

  • Myocardial encasement of a coronary artery segment

[edit] Images

Patient #1

[edit] See Also

[edit] External Links

[edit] References for Myocardial bridging