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Updated: Sep 9, 2025

Author Spotlight: Enhancing Coronary Artery Revascularization
Published on: September 15, 2023
Complete Myocardial Bridging
Shaun Abid1, Anton Stolear2, Samdish Sethi2
1Department of Internal Medicine, Yale New Haven Health, Bridgeport Hospital, Bridgeport, Connecticut, USA.
Insights
Complete intramyocardial coronary systems, a rare anomaly, can cause severe cardiac events. Management requires specialized, multidisciplinary care due to unfeasible traditional treatments.
Area of Science:
- Cardiology
- Anatomical Pathology
Background:
- Myocardial bridging is a coronary artery anomaly where vessels run within the heart muscle.
- Complete intramyocardial coronary systems are exceptionally rare and pose significant clinical risks.
Observation:
- An 18-year-old male with left ventricular noncompaction cardiomyopathy presented with chest pain and syncope during exertion.
- Diagnosis included ST-segment elevation myocardial infarction and a completely intramyocardial coronary system.
Findings:
- The patient developed heart failure despite medical management and an implantable cardioverter-defibrillator.
- Extensive myocardial bridging involving the entire coronary system can lead to ischemia, arrhythmias, and sudden cardiac events.
Implications:
- Managing extensive intramyocardial coronary anatomy is complex and requires individualized, multidisciplinary approaches.
- Conventional revascularization strategies are often not viable for these rare anatomical anomalies.
Background:
Myocardial bridging is an anatomical variant in which coronary arteries course within the myocardium rather than on the epicardial surface. Complete intramyocardial coronary systems are extremely rare and can lead to significant clinical consequences.
Case Summary:
An 18-year-old man with left ventricular noncompaction cardiomyopathy experienced chest pain and syncope while playing basketball, and was subsequently diagnosed with ST-segment elevation myocardial infarction. Coronary imaging revealed a completely intramyocardial coronary system. Despite medical management and placement of implantable cardioverter-defibrillator, he developed heart failure requiring heart transplant evaluation.
Discussion:
This case underscores the complexity of managing extensive intramyocardial coronary anatomy, in which conventional revascularization strategies may not be viable and individualized, multidisciplinary approaches are essential.
Take-Home Messages:
Extensive myocardial bridging involving the entire coronary system is a rare anatomical anomaly that can precipitate exertional ischemia, arrhythmias, and even sudden cardiac events. Management of complete intramyocardial coronary anatomy requires individualized, multidisciplinary assessment, as traditional revascularization strategies may be unfeasible.
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