|Year : 2015 | Volume
| Issue : 1 | Page : 19-20
Superdominant Right Coronary Artery with Double Posterior Descending Artery
Monika Maheshwari, SR Mittal
Department of Cardiology, Jawaharlal Nehru Medical College, Ajmer, Rajasthan, India
|Date of Web Publication||11-Mar-2015|
Dr. Monika Maheshwari
D/o Mr. O. P. Maheshwari, Navin Niwas, 434/10, Bapu-Nagar, Ajmer Naveen Niwas, 434/10, Bapu Nagar, Ajmer-302 015, Rajasthan
Source of Support: None, Conflict of Interest: None
| Abstract|| |
Coronary artery anomalies are rare entities. All angiographers and cardiac surgeons need to be familiar with these anatomic variants for proper surgical revasularisation in the presence of coronary artery disease. We report here an interesting case of superdominant right coronary artery with double posterior descending artery.
Keywords: Absent left circumflex artery, congenital coronary anomaly, superdominant right coronary artery
|How to cite this article:|
Maheshwari M, Mittal S R. Superdominant Right Coronary Artery with Double Posterior Descending Artery
. Heart Views 2015;16:19-20
| Introduction|| |
Coronary artery anomalies are rare entities; overall incidence being 0.6-1.3%. Common congenital anomaly of coronary vessels, include origin of left circumflex artery from the right sinus of valsalva, origin of left coronary artery from pulmonary artery, presence of a single coronary artery, hypoplastic coronary vessels, coronary artery aneurysms, and coronary artery fistula. We report here an interesting case of superdominant right coronary artery (RCA) with double posterior descending artery (PDA).
| Case Report|| |
A 32-year-old premenopausal female presented in emergency department with retrosternal chest pain since 2 months. The pain was sharp or pressure like in nature, sometimes precipitated by effort, but often occurred at rest. On physical examination, blood pressure was 110/70 mmHg, pulse 82/min, respiratory rate 14/min, and temperature 98.4°F. There was pallor but no cyanosis, clubbing. icterus, or lymphadenopathy jugular venous pressure was normal. Chest skiagram showed normal sized cardiac shadow and pulmonary vasculature. Electrocardiogram revealed nonspecific ST-T changes. Cardiac enzymes levels and two-dimensional (2D) echocardiogram were within normal limits. A treadmill exercise test to evaluate inducible ischemia and functional capacity was prematurely terminated at stage 2 because of exhaustion and dyspnea. Diagnostic coronary angiography was therefore undertaken which revealed a normal left anterior descending (LAD) artery, but left circumflex artery could not be visualized [Figure 1]. Upon selective right coronary angiography, a superdominant RCA with double PDA was noted. The RCA crossed the crux of heart and ascended along the entire length of the left atrioventricular groove, between left atrium and left ventricle (LV), perfusing the posterior and lateral walls of the LV. Two parallel PDA branches was an additional characteristic feature [Figure 2].
|Figure 1: Left coronary angiogram showing stenotic left anterior descending coronary artery with first diagonal branch (D1) and absent left circumflex artery|
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|Figure 2: Right coronary angiogram showing a superdominant right coronary artery with double posterior descending arteries|
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| Discussion|| |
Isolated superdominant RCA has been reported in the literature. ,,, Ilia et al.,  had described a case of superdominant RCA with large tortous right posterolateral ventricular branch to supply the posterolateral nad lateral wall of the heart which is usually supplied by the left circumflex artery. Kumar  had also described anomalous superdominant RCA, which bifurcated into the superior and inferior right circumflex arteries to supply the territory supplied by an absent left circumflex artery. In our case it was double posterior descending arteries arising from a superdominant RCA, which supplied the territories usually supplied by left circumflex artery. Such combination of superdominant RCA with double PDA has not been reported yet in the literature. All angiographers and cardiac surgeons need to be familiar with these anatomic variants because accurate identification and delineation of the course and distribution of coronary vessels with nature of blood supply to the myocardium is integral for proper surgical revasularization in the presence of coronary artery disease.
| References|| |
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[Figure 1], [Figure 2]