1Department of Anatomy, Maharajas institute of Medical Sciences, Vizianagaram
2Department of Anatomy, IMS & SUM Hospital, Bhubaneswar, Odisha, India
In the left coronary artery dominant people the total left ventricle is purely supplied by left coronary artery. Left coronary dominant people has an poor prognosis in acute coronary syndrome when compared with the right coronary dominance. Left coronary dominant with myocardial bridged may be an additional risk to the coronary artery disease.
To evaluate the incidence of myocardial bridging and cardiac dominance pattern in myocardial bridged hearts in cadavers.
As this is a cadaveric study 100 heart specimens were obtained from routine dissection conducted for undergraduate students in the department of Anatomy, Maharajas institute of medical sciences, Vizianagaram and department of Anatomy IMS & SUM Hospital Bhubaneswar. After simple dissecting procedure myocardial bridges and coronary dominance pattern were observed.
Myocardial bridging was seen in 41(41%) specimen with major involvement of mid-segment of left anterior descending artery (LAD). Out of 41 myocardial bridged herats right coronary dominance is present in 35 (85.37%) hearts and left coronary dominance present in 6(14.63%) hearts.
The dominance pattern of heart had great role in coronary heart disease. The left dominant heart was found to have significantly higher mortality than the right dominant heart and mixed type. In addition to the left dominance if the single and multiple myocardial bridges are present over the epicardial coronary artery there may be increased frequency of myocardial ischemia.
Left anterior descendind artery (LAD), Myocardial bridging (MB) Coronary dominance
