Study of prognostic significance of bundle branch blocks in acute coronary syndrome

 

 

Abstract              Background: Recent studies based on epidemiology, have shown a strong association between bundle branch block (BBB) and cardiovascular disease, more specifically hypertension, cardiomegaly, coronary artery disease, and heart failure. Objectives: To see any prognostic significance of bundle branch blocks in coronary artery syndrome. Material and Methods: This was retrospective analytical study carried out at Medicine Department of a tertiary care hospital on 100 cases with acute coronary syndrome. Divided into 2 groups of 50 in cases with no BBB and those with BBB. Standard protocol was followed for definitions and treatment. Analysis was done suing SPSS vr20. Results: Out of 100 males were in majority with 65%. Right bundle branch block was the most common block (58%). Overall HT was the most common cardiovascular risk factor seen in this study, next was DM. There was statistical association between type of block and location of AMI. Most frequent MI location was anterior wall. Better ejection and lesser CPK value were seen in those with no BBB, worse was seen cases with RBBB. Most deaths were seen in group with RBBB (57%). Conclusions: RBBB was the major cause of post AMI mortality in this study.

Key Words: Cardiovascular diseases, Bundle branch block, RBBB, LBBB