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Left anterior descending coronary artery myocardial bridging detected by 64-multidetector computed tomography

Kwang Kon Koh, Chan Il Moon, Jeong Ho Kim

    International Journal of Cardiology
    |July 24, 2007
    PubMed

    Insights

    A 59-year-old woman with hypertension experienced exercise-induced dyspnea. Coronary computed tomography revealed myocardial bridging in her left anterior descending artery, a condition where the artery tunnels through heart muscle.

    Area of Science:

    • Cardiology
    • Diagnostic Imaging

    Background:

    • Assessing pre-operative risk for knee surgery in patients with comorbidities.
    • Evaluating unexplained dyspnea on exercise.

    Observation:

    • Patient presented with a history of hypertension and dyspnea on exercise.
    • Radionuclide imaging showed significant reversible perfusion defects in the anterior, anteroseptal, and anterolateral regions of the heart.
    • ECG-gated 64-multidetector computed tomography (MDCT) identified myocardial bridging in the mid-left anterior descending coronary artery.

    Findings:

    • Myocardial bridging involved a 23 mm length and 3 mm depth of the left anterior descending coronary artery.
    • Coronary angiography confirmed the presence and location of the myocardial bridging.
    • MDCT proved to be a reliable, noninvasive method for diagnosing myocardial bridging.

    Implications:

    • MDCT offers a valuable noninvasive diagnostic approach for myocardial bridging.
    • Accurate diagnosis of myocardial bridging can inform surgical risk assessment and patient management.
    • Understanding myocardial bridging is crucial for interpreting perfusion defects and managing cardiac symptoms.

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