Proportion of Myocardial Bridge in a Tertiary Care Hospital of North India: A Retrospective Observational Study
OC55-OC57
Correspondence
Sanjeev Kumar Singla,
B12/123, Minocha Colony, Near Dr Ramnik Mangla, Rampura PHUL, Bathinda, Punjab, India.
E-mail: drsanjeevsingla77@rediffmail.com
Introduction: Myocardial bridging, a congenital coronary anomaly, is a condition in which a segment of a major epicardial coronary artery runs intramurally through the myocardium. During systole, the coronary artery is compressed and can cause angina, arrhythmia, depressed left ventricular function, myocardial stunning and sudden death.
Aim: To find the proportion of Myocardial Bridge (MB) in patients admitted for cardiac evaluation in a tertiary care hospital of north India.
Materials and Methods: A retrospective, observational study was performed in the Cardiac Care Unit of the Adesh institute of Medical Sciences and Research Bathinda from January 2017 to December 2020. A total of 3800 adult patients of both sexes, who underwent diagnostic coronary angiography were evaluated for MB between January 2017 to December 2020. The data was collected from the patients and statistically analysed on 15th April 2021.
Results: The proportion of MB was 208 (5.50%), in which 74.51% were males and 25.49% were females. Dominance-wise, 72.11% were right dominant, 22.60% were left dominant and 5.29% had balanced circulation. The incidence of myocardial bridging was 3.95% in right dominant, 1.24% in left dominant and 0.28% in balanced dominant patients. Total 199 (95.67%) MB were located on the Left Anterior Descending Artery (LAD) of which mid LAD were in 186 (89.42%), distal LAD in 9 (4.45%), proximal LAD in 4 (1.95%) and on diagonal (D1) it was 9 (4.45%). Double bridge was observed in 6 (2.89%) cases in proximal and distal regions of LAD.
Conclusion: Clinical suspicion of a MB should be considered in young patients with typical or atypical chest pain, where the probability of atherosclerosis is low and who there are no other cardiovascular risk factors. There was higher incidence of MB in proximal distal segments of LAD and diagonal arteries