Key result
Right bundle branch block complicating acute anterior wall myocardial infarction was associated with a significantly higher in-hospital mortality compared to patients without RBBB (57.5% vs 17.5%, RR 3.28).
Why the study?
Does the presence of right bundle branch block increase in-hospital mortality in patients with acute anterior wall myocardial infarction?
Cohort (n=80)
No
Does the presence of right bundle branch block increase in-hospital mortality in patients with acute anterior wall myocardial infarction?
The presence of right bundle branch block in patients with acute anterior wall myocardial infarction is associated with a significantly higher risk of in-hospital mortality.
RBBB in anterior MI signals high in-hospital mortality warranting vigilance; leaves open whether it identifies candidates for targeted interventions.
Objectives: To compare the frequency of in-hospital mortality of anterior wallmyocardial infarction with and without right bundle branch block. Study Design: Cohort Study.Setting: Cardiology Department of Faisalabad Institute of Cardiology, Faisalabad. Duration:1st September, 2013 to 28th February, 2014. Methodology: 80 patients including both gendersfulfilling the inclusion criteria were collected. Informed consent was obtained from the patients.Effect modifiers such as hypertension, diabetes mellitus, hyper-lipidemia and smoking werenoted. Patients were monitored according to the hospital protocol and mortality was noted.Results: Out of 80 patients, 62(77.5%) were males and 18(22.5%) were females. Smokingwas present in 45% patients, diabetes mellitus in 35% patients, hypertension in 27.5% patientsand hyper-lipidemia in 23.8% patients. In hospital mortality in group A was 23(57.5%) and ingroup B was 7(17.5%) with P value of 0.0001. Conclusion: Acute anterior wall myocardialinfarction combined with right bundle branch block suggests the severity of disease and is anindependent predictor of increased mortality. RBBB after myocardial infarction suggests poorprognosis.
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Asghar et al. (2016) conducted a cohort in Acute anterior wall myocardial infarction (n=80). Right bundle branch block (RBBB) vs. Without right bundle branch block was evaluated on In-hospital mortality (RR 3.28, p=0.0001). Right bundle branch block complicating acute anterior wall myocardial infarction was associated with a significantly higher in-hospital mortality compared to patients without RBBB (57.5% vs 17.5%, RR 3.28).
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