RESUMEN
Background: Ischemic heart disease especially inferior wall myocardial infarction [IWMI] is an important health issue. It can further add to morbidity and mortality when it is associated with right ventricular [RV] infarction
Objective: To determine the frequency of right ventricular infarction in cases with acute inferior wall myocardial infarction
Methodology: This cross sectional study was conducted at Department of Cardiology, Sheikh Zayed Hospital, Rahim Yar Khan in January to 31 December 2015. The cases with age range of 30 to 80 years of IWMI; assessed by ST segment elevation of at least half mm in lead II. III and aVF, were included in this study. The co-morbidities in the form of DM, HTN, smoking, family history of IHD and dyslipidemia were also considered. However, the cases with renal failure, trauma, electrolyte imbalance and MI other than inferior wall were excluded from the study. The diagnosis of RV infarct was made by the elevation of at least 1 mm in V4R lead in cases with IWMI changes. These cases were followed during their hospital stay to look for development of any complication. The data was entered and analyzed by using SPSS version 21
Results: In this study, there were 30 cases of IWMI. Out of which 22 were males and 8 females. The mean age was 48.87 +/- 11 years. Nineteen [63.33%] cases has door to needle time less than 30 minutes. DM, HTN, smoking, family history of IHD and dyslipidemia were seen in 10 [33.33%], 9 [30%], 13 [43.33%], 01 [3.33%] and 2 [6.67%] cases respectively. Thrombolysis was done in 23 [73.33%] cases. RVinfarct was seen in 11 [36.67%] cases. RVinfarct was seen in 7 out of 22 males while it was seen in 4 out of 8 females [p= 0.36]. There was no significant association of RV infarct with any age group [p=0.60]. There was again no significant association with door to needle time, duration of symptoms, thrombolysis status and any of the risk factors with RV infarct. The most common in hospital complication was different types of arrhythmia which rd were found in 9 [30%] cases
Conclusion: Inferior wall MI is reported in good number of cases. Every 3 case of inferior wall MI also has right ventricular MI