Fazlul Aziz Mian, Shahid N Malik, Muhammad Ismail, Iqbal Saifullah Khan, Asad Riaz Kachlu, Mehboobur Rehman, Jamil Hussain, Iftikhar Ahmad.
Coronary artery dominance: what pattern exists in Pakistani population?.
Ann Pak Inst Med Sci Jan ;7(1):3-5.

Objective: To document the pattern of dominant coronary artery in our population. Study Design: Case series study. Place and duration: This study was carried out in the Cath Lab of Cardiology Department, Pakistan Institute of Medical Sciences (PIMS), Islamabad over a period of two years. Subjects and Methods: All patients of either gender over 14 years of age who presented to the Cath lab for coronary angiography for different indications were included by convenience sampling technique. Patients with congenital heart diseases were excluded. The sociodemographic profile of the patients, pattern of coronary artery dominance (based on posterior descending artery and posterolateral ventricular artery origin from LCx, RCA or both), association of Coronary artery disease ( CAD ) with coronary artery dominance and association of Ramus with coronary artery dominance were all recorded on a proforma. The data were subjected to statistical analysis. Results : Out of a total of 200 patients, 74.5 % ( n=149 ) were males while 25.5 % ( n=51 ) were females. The mean age was 55.17 11.35 years. The age range was 20-84 years. Majority of the patients ( 65.56 % ) were in their 5th and 6th decades of life. There was no in-hospital mortality. Right coronary artery was dominant in 60.5 % of the patient population. Ramus intermedius was found in 24% (n=48) of the patients. Conclusion: The right coronary dominant and co-dominant pattern coronary arteries are more prevalent in our population. Age and sex have no significant association with coronary dominance.

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