Determinación de la dominancia coronaria en población mestiza Colombiana. Un estudio anatómico directo

Abstract

There is great variability between results of coronary dominance among several ethnic groups. The purpose of this work was to determine the coronary dominance in a group of half caste Colombian sample. One hundred fifty four hearts obtained from fresh autopsy cadavers were evaluated. Coronary arteries were injected with synthetic resin and later cleaned with 15% of KOH for removing the epicardial fat. Right dominance in 83.7% of the sample with a moderated dominance corresponding to 42.8% was observed. A balanced circulation in 9.2% and left dominance in 7.2% with a major frequency (3.3%) in the subgroup II was observed. Although not statistical significantly different (p=0.26) we found major female right dominance. Circumflex artery had short and long trajectory in 92.8% and 7.2% respectively. Right coronary artery concludes its trajectory between the Cruz cordis and the left margin in 81.8% and in the left margin in 1.9%. In right coronary dominance the caliper of right coronary arteries was 3.21 mm (SD 0.53) and 2.67 mm (SD 0.30) for the left coronary dominance with an statistical significative difference (p=0.0066). In right coronary dominance sample there was prevalence of the moderated expression, short circumflex arteries (all dominances) and a major caliper in the right coronary dominance.