 anatom type singl common ventricl man morpholog geometr aspect 60 necropsi case 60 necropsi case singl common ventricl man major unrel ventricular malform 1 absenc ventricular sinu 47 case 78 percent design type 2 absenc left ventricular sinu 3 case 5 percent type 3 absenc rudimentari develop ventricular septum 4 case 7 percent type 4 absenc ventricular sinus ventricular septum 6 case 10 percent type three type relationship great arteri normal solitu interrelationship 9 case 15 percent design type 1 d-transposit transpos aortic valv ly dextro rel transpos pulmonari valv 25 case 42 percent type ii l-transposit transpos aortic valv ly left levo rel transpos pulmonari valv 26 case 43 percent type iii inversu interrelationship type iv displai three type viscer atrial situ solitu normal 50 case 83 percent inversu exact appar mirror imag normal 2 case 3 percent heterotaxi uncertain viscer atrial situ associ asplenia 8 case 13 percent 60 case classifi segment anatomi three cardiac segment great arteri ventricular sinus atria classic singl ventricl rudimentari outlet chamber morpholog larg left ventricl ventricular infundibulum sinu ventricl absent type myocardium ventricular infundibulum ventricular sinu left ventricular sinu identifi distinct gross morpholog characterist plane atrial ventricular septa relationship great arteri semilunar valv measur project horizont plane rel anteroposterior approach cardiac anatomi present segment morpholog geometr approach angiocardiograph electrocardiograph embryolog applic 