Right coronary artery anatomy: anatomical and morphometric analysis

Abstract

Background: It is necessary knowing the large variability of right coronary (RCA) artery specialty for its implications in surgical procedures and clinic events. This variability is usually related to the length, branches quantity, origin and irrigated territories.Objective: To evaluate by direct examination the morphologic expression of RCA in Colombian people.Methods: RCA were measured in 221 fresh hearts by RCA ostium canalization with polyester synthetic resin that was injected in their branches.Results: The caliber of the RCA proximal segment and at the level of the acute angle of the heart was 3.42 ± 0.66 mm and 2.9 ± 0.50 mm, respectively. It ended between crux cordis and the left margin in 75.6% of specimens. Posterior interventricular artery (PIA) reached the inferior third, or the apex, or the anterior interventricular sulcus in 149 (67.4%) cases. Sinoatrial node artery (SNA) originated in the right coronary in 134 (60.6%) cases, 77 (34.9%) from circumflex artery (CxA) and from both in 10 (4.5%). Posterior right diagonal artery (PRDA) was noted in 38 (17.2%) hearts, but only 6% of the sample with long PIA, concomitantly presented the PRDA (P = 0.001). In right dominance SNA were originated from RCA in 54.7% and form CxA in 46.3% (P = 0.06).Conclusions: Caliber of the RCA and its branches is lesser than the majority of previous studies, while the PRDA frequency is slightly higher than the reported in literature.Clinical and pathological scenarios by these variations should be taken into account: hemodynamic procedures, cardiac surgery and arrhythmias from coronary occlusive disease.Descriptors: Coronary Vessels. Coronary Circulation. Atrioventricular Node. Sinoatrial Node. ResumoIntrodução: É necessário conhecer a grande variabilidade da artéria coronária direita (ACD), especialmente por suas implicações nos procedimentos cirúrgicos e eventos clínicos. Esta variabilidade está geralmente relacionada à extensão, à quantidade de ramos, à origem e aos territórios irrigados.Objetivo: Avaliar por exame direto a expressão morfológica da ACD em sujeitos colombianos.Métodos: As ACD foram medidas em 221 corações frescos pela canalização do óstio da ACD com uma resina de poliéster sintético que foi injetada em seus ramos.Resultados: O calibre do segmento proximal da ACD e ao nível do ângulo agudo do coração foi de 3,42 ± 0,66 mm e 2,9 ± 0,50 mm, respectivamente. A ACD terminou entre a crux cordis e a margem esquerda em 75,6% da amostra. Rev Bras Cir Cardiovasc 2011;26(2):230-7 RCA near of the acute margin of the heart and adopt an oblique path on the posterior wall of the right ventricle to reach the middle third of posterior interventricular groove contributing to the irrigation of the lower segment of the diaphragmatic heart face [10][11][12][13]. The branch of the ANA start in the "inverted U" segment of the RCA located in the crux cordis (73%-85%) and the rest coming from the terminal branch of the CxA [14,15].The importance of the cardiac irrigation variability in special the RCA is supported by s...

Study of Posterior Interventricular Artery in Human Cadaveric Hearts

“…10,11,13,14 In the present study, Co-dominance was found in 1.7%. Comparison of the results of the present study with the results of the various other authors is as follows.…”

Third Coronary Artery: A Cadaveric Study

“…Coronary CT angiograms studies, Ostium recanalisation with polyester synthetic resin [10][11][12][13][14].…”

Effects of vessel dynamics and compliance on human right coronary artery hemodynamics with / without stenosis

“…First, the only one patient was involved in this study. Because morphologic expression of coronary artery is different from each other (Ballesteros, et al, 2011), the number of patients directly affects the generality of the result. Second, the resolution of CTA images is not very high, which may more or less affect the accuracy of computational model.…”