Spectrum of tricuspid atresia--a study of 23 cases.

The present report describes the clinical and angio-cardiographic features of 23 cases of tricuspid atresia. Nineteen patients had type I anatomy, 2 patients had type II anatomy and 2 patients had type III anatomy. In addition to the standard features, there were some uncommon associations observed. These included double outlet right ventricle, double outlet left ventricle, single coronary artery, complete heart block, right axis deviation, ostium primum atrial septal defect and coarctation of the aorta.