Myocardial infarction with distal embolization associated with myocardial bridging in a postoperative patient: a case...

Area of Science:

• Cardiology
• Vascular Biology
• Medical Case Reports

Background:

• Myocardial bridging, a congenital anomaly where a segment of a coronary artery travels through heart muscle, is rarely linked to myocardial infarction (MI).
• The precise mechanisms leading to MI in patients with myocardial bridging remain incompletely understood, with theories including superimposed thrombosis or vasospasm.
• Understanding these mechanisms is crucial for developing preventative strategies against ischemic events in affected individuals.

Observation:

• This report details an unusual case of postoperative myocardial infarction (MI).
• The MI was attributed to thrombus formation within a myocardial bridge, exacerbated by intravascular volume depletion.
• The thrombus subsequently embolized distally, causing further ischemic injury.

Findings:

• Endothelial injury within the myocardial bridge segment may create a pro-thrombotic environment.
• Intravascular volume depletion can precipitate thrombus formation and embolization in the context of myocardial bridging.
• This case illustrates a specific pathway linking myocardial bridging, volume status, and acute coronary syndrome.

Implications:

• Perioperative fluid management is critical for patients with myocardial bridging to prevent potentially life-threatening thrombotic events.
• Maintaining adequate intravascular volume may mitigate the risk of endothelial injury and subsequent thrombus formation.
• This case underscores the importance of considering myocardial bridging in the differential diagnosis of MI, particularly in postoperative settings with volume depletion.