Evaluation and Treatment of Myocardial Bridging by Clinical Phenotype

Area of Science:

• Cardiology
• Vascular Anatomy
• Clinical Medicine

Background:

• Myocardial bridging (MB) is an intramyocardial segment of a coronary artery, often the left anterior descending artery.
• Traditionally considered a benign variant, MB is increasingly linked to adverse cardiac events, including angina, myocardial infarction, and sudden cardiac death.
• Many MB cases are asymptomatic and discovered incidentally during imaging studies.

Purpose of the Study:

• To review current evidence on isolated myocardial bridging in adult patients.
• To elucidate the mechanisms of ischemia and adverse outcomes associated with MB.
• To evaluate diagnostic modalities for ischemia and discuss phenotype-based treatment strategies.

Main Methods:

• Systematic review of current literature on myocardial bridging.
• Analysis of evidence regarding mechanisms of ischemia and cardiac outcomes.
• Evaluation of diagnostic testing for ischemia in MB patients.
• Review of treatment strategies based on clinical presentation.

Main Results:

• MB can lead to myocardial ischemia and adverse cardiac events in a subset of patients.
• Diagnostic modalities are crucial for identifying ischemia in symptomatic MB patients.
• Treatment strategies should be tailored to individual patient phenotypes and symptoms.

Conclusions:

• While often asymptomatic, myocardial bridging requires careful consideration due to its potential to cause significant cardiac events.
• Accurate diagnosis of ischemia and personalized treatment are key in managing patients with myocardial bridging.
• Further research is needed to standardize management protocols for myocardial bridging.