Each of these cases satisfies all or most of the following criteria for tricuspid atresia with diminished pulmonary blood flow: 1. Central cyanosis. 2. Electrocardiogram: (a) normal axis or left axis deviation, (b) preponderance of left ventricular activity over right ventricular activity. The three cases of dextrocardia had right axis deviation and preponderance of lateral ventricular activity...

Sixty-two patients with tricuspid atresia admitted for cardiac catheterisation between 1967 and 1974 have been classified according to the anatomical and radiological findings into those with normally related great arteries (type I: 39 cases) and those with transposition of the great arteries (type II: 23 cases). These types were further subdivided into group A (reduced lung vascularity),groupB...

Eighteen cases of mitral atresia with normal aortic valve plus 68 cases from the literature are analyzed. A new classification based on anatomical findings is proposed. Pulmonary stenosis or atresia is frequent in the type with transposition of the great arteries. The rare instances of normal or large left ventricle are due to a large ventricular septal defect, or to straddling or displaced tri...

Eighteen cases of mitral atresia with normal aortic valve plus 68 cases from the literature are analyzed. A new classification based on anatomical findings is proposed. Pulmonary stenosis or atresia is frequent in the type with transposition of the great arteries. The rare instances of normal or large left ventricle are due to a large ventricular septal defect, or to straddling or displaced tri...