Abstract

BALLESTEROS ACUNA, Luis Ernesto; CORZO GOMEZ, Edgar Giovanni  and  SALDARRIAGA TELLEZ, Bladimir. Coronary's Dominance Determination in Racially Mixed Colombian Population: A Direct Anatomical Study. Int. J. Morphol. [online]. 2007, vol.25, n.3, pp. 483-491. ISSN 0717-9502.  doi: 10.4067/S0717-95022007000300003.

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 caliperof 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

Keywords : Heart; Coronary circulation; Dominance; Balanced circulation; Arterial caliper.