What makes a coronary myocardial bridge symptomatic?

Area of Science:

• Cardiology
• Cardiovascular Medicine
• Interventional Cardiology

Background:

• Coronary myocardial bridging is a congenital anomaly where a segment of a coronary artery travels through the heart muscle.
• Its clinical significance and optimal management strategies remain subjects of ongoing debate.
• Various interventional approaches have been proposed for symptomatic patients.

Observation:

• A patient presented with exertional chest pain, diaphoresis, and ischemic electrocardiogram changes.
• Cardiac catheterization revealed significant systolic narrowing in the mid left anterior descending coronary artery, indicative of myocardial bridging.
• The patient experienced acute anterior myocardial wall ischemia.

Findings:

• Non-invasive management including intravenous fluid resuscitation and calcium channel blockade was initiated.
• These interventions led to the normalization of the patient's electrocardiogram.
• Complete resolution of anginal symptoms and improvement in coronary angiographic findings were observed.

Implications:

• This case highlights the potential efficacy of conservative medical management for symptomatic coronary myocardial bridging.
• It suggests that interventions like fluid resuscitation and calcium channel blockers can alleviate ischemia and improve coronary flow.
• Further research into non-invasive treatment protocols for myocardial bridging is warranted.