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J Am Coll Cardiol, 2003; 42:889-894, doi:10.1016/S0735-1097(03)00854-4
© 2003 by the American College of Cardiology Foundation
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Myocardial bridging in adult patients with hypertrophic cardiomyopathy

Paul Sorajja, MD*, Steve R. Ommen, MD*,*, Rick A. Nishimura, MD*, Bernard J. Gersh, MB, ChB, DPhil*, A. Jamil Tajik, MD* and David R. Holmes, Jr, MD*

* Division of Cardiovascular Disease and Internal Medicine, Mayo Clinic and Mayo Foundation, Rochester, Minnesota, USA



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  		Figure 1 Myocardial bridging in a patient with hypertrophic cardiomyopathy. Right anterior oblique views of the left coronary artery during diastole (A) and systole (B). Bridging of the middle left anterior descending coronary artery (LAD) (black arrows on B) is evident during systole. This was associated with complete systolic obliteration of the second septal perforator artery, which is visible only during diastole. There also was mild systolic compression of the distal LAD.

 


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  		Figure 2 Unadjusted survival comparisons of hypertrophic cardiomyopathy patients with and without myocardial bridging for the study end points (A = overall death; B = all cardiac deaths; C = sudden cardiac death). The dashed lines indicate patients with myocardial bridging. The solid lines indicate patients without myocardial bridging. Comparisons were performed with log-rank analyses.

 


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  		Figure 3 Survival comparisons between hypertrophic cardiomyopathy (HCM) patients with myocardial bridging (dashed lines) and age- and gender-matched HCM patients without bridging (solid lines) for the study end points (A = overall death; B = all cardiac deaths; C = sudden cardiac death). Comparisons were performed with Cox models stratified for age and gender.

 




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