Background: Right bundle branch block has prognostic significance in the setting of acute myocardial infarction; this research is intended to determine the incidence of new-onset right bundle branch block in acute myocardial infarction and its angiographic findings.
Methodology: This descriptive cross-sectional study was conducted in a tertiary care hospital, i.e., the Cardiology Department, Lady Reading Hospital, Peshawar, from 13/5/2016 to 13/11/2016. A total of 91 patients were included in the study. Baseline investigation, including ECG (Nihan Koden), Coronary angiography (Siemens Healthineers), on patients who qualify for early invasive therapy and angiographic findings. All the information, like age and gender, was recorded. 91 patients with acute myocardial infarction who presented within 24 hours were observed, in which male to female ratio was 1.17:1. The study enrolled the age group from 30 up to 75 years.
Results: Average age was52.6±7.71 years. New onset right bundle branch block (RBBB) was found in 13(14.29%) patients in acute myocardial infarction.
Conclusion: In conclusion, RBBB was observed in 13% of patients where angiographic findings showed triple vessel disease 38.5%, double vessel coronary artery disease 30.8%, single vessel disease 15.4%, and left main stem disease15.4% respectively, there is a high rate of severe CAD in patients presenting with RBBB in the setting of the acute coronary syndrome, so early reperfusion is recommended.
Objectives: Right ventricular infraction has prognostic significance in the setting of acute “inferior wall myocardial infarction (IWMI)”, this research is intended to determine the frequency of “right ventricular infarction (RVI)” in patients with acute IWMI.
Methodology: This descriptive cross-sectional study took place at a tertiary care hospital in Peshawar, Pakistan. The study included consecutive patients who were diagnosed with acute IWMI. The presence of RVI was determined based on specific ECG findings showing >1.0mm ST segment elevation on right-sided chest leads.
Results: In a sample of 150 patients, 87 (58%) were male. The average age of the patients was 61 ± 10.7 years. Among the patients, 111 (74%) had hypertension, 64 (42.7%) were diabetic, and 45 (30%) were smokers. A body mass index (BMI) exceeding 25 kg/m2 was observed in 83 (55.3%) patients. RVI was observed in 62 (41.3%) of the patients. The occurrence of RVI did not show statistically significant differences between males and females (41.4% vs. 41.3%; p=0.989), hypertensive and non-hypertensive individuals (41.4% vs. 41.0%; p=0.964), diabetics and non-diabetics (42.2% vs. 40.7%; p=0.855), smokers and non-smokers (42.2% vs. 41.0%; p=0.885), and patients with BMI ≤25 kg/m2 and >25 kg/m2 (41.8% vs. 41.0%; p=0.920), respectively.
Conclusion: Based on the research findings, it can be concluded that RVI is a relatively common occurrence in patients with acute IWMI, as it was observed in more than 40% of the patients studied. However, no statistically significant association exists between RVI and various demographic and clinical factors.
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