myocardial bridging


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myocardial bridging

passage of an epicardial coronary artery beneath a band of cardiac muscle.

myocardial bridging

The presence of strands of myocardial fibres overlying the coronary arteries which, if long and deep enough, may cause asystole, myocardial ischaemia, necrosis or sudden death.

Because small bridges are seen in 27% of autopsies, and these may represent a normal anatomic variant of coronary arterial trajectories, current thought is that the muscle bridge must be at least 20 mm in length and 5 mm in depth to be significant and capable of compressing a coronary artery.

myocardial bridging

Coronary bridge, intramural coronary artery, intramyocardial tunneling, mural coronary artery, myocardial squeezing, myocardial tunneling Cardiology An anomaly in which a major coronary artery–CA leaves the epicardium, follows an intramyocardial course and subsequently returns to the surface; the CA is thus 'bridged' by a band of overlying myocardium; seen in 27% of autopsies, MB is a normal anatomic variant of the CAs; however, constriction of a bridged CA occurs in asystole and may cause myocardial ischemia or sudden death.
References in periodicals archive ?
Myocardial bridging in a young patient with sudden death.
In myocardial bridging, a coronary artery that runs typically on the epicardium develops a transient intramyocardial course.
Symptomatic myocardial bridging of coronary artery.
Hanrath, "Functional, angiographic and intracoronary Doppler flow characteristics in symptomatic patients with myocardial bridging: effect of short-term intravenous beta-blocker medication," Journal of the American College of Cardiology, vol.
Incidence and clinical significance of myocardial bridging with ECG-gated 16-row MDCT coronary angiography.
Cardiac Pathology Frequency Coronary artery disease 112 Myocardial bridging 1 Myocarditis 15 Infective endocarditis 1 HCM 6 EMF 1 Neuroendocrine Tumour 1 Valvular heart disease 5 ARVD 1 Total 143 Table 2.
(4.) Faruqui AM, Maloy WC, Felner JM, Schlant RC, Logan WD, Symbas R Symptomatic myocardial bridging of coronary artery.
Right atrial myocardial bridging with a tunneled artery embedded in the myocardium of the right atrium, is an extremely rare coronary anomaly, which has been reported only in a case previously (7).
Distribution of Bridging in Coronary Artery: Myocardial bridging was observed only in left anterior descending branch of left coronary artery (LAD) with a percentage of 3.5%.{Table no: 2}.
With the use of intravascular ultrasound, intracoronary Doppler ultrasound and intracoronary pressure devices, morphological and functional features of myocardial bridging can be visualized and quantified (12).