MYOCARDIAL REVASCULARIZATION UTILIZING INTERNAL MAMMARY ARTERIES

Objective: To study myocardial revascularization with arterial grafts utilizing internal mammary arteries, withspecial reference to its morbidity and mortality and the results of internal mammary artery grafting in variousages and genders.Study Design: Retrospective study.Place and Duration of Study: National Institute of Cardiovascular Diseases (NICVD), from Mar 2012 to Feb 2013.Material and Methods: Patients with concomitant valve replacement, ventricular aneurysmectomy redo coronarybypass or other cardiac or ascending aortic procedures were excluded from this analysis. No patient wasexcluded for any other reason. The age range was 35 to 80 years. The statistical analysis for comparison ofdifferent proportions were carried out with the help of chi-square statistics, when the test is valid.Results: A total of 150 patients were studied during the year 2012-2013, out of which 135 were males and 15 werefemales. The ages ranged between 35-80 years. Majority of the patients in both groups were in the age rangebetween 45-60 years. Far less were females 10%-15 patients as compared to male patients (90% - 135). Out of these18% had unstable and 5% had atypical angina. After surgery most of the patients in both the study groupsexperienced an equal degree of angina relief. Exertional dyspnea was present in 20% and palpitation in 5% of ourpatients.Conclusion: In this study conclude that internal mammary grafting does not increase morbidity, has lowermortality. Possibly no absolute contra - indications to the use of single, internal mammary artery there may besome relative contra-indication