Ten of @ patients ( @ % ) had no PH , @ of @ ( @ % ) had precapillary PH , and @ of @ ( @ % ) had postcapillary PH. The following five echocardiographic variables were found to predict precapillary PH : right heart chamber larger than the left ( P = @ ) , left ventricular eccentricity index > @ ( P = @ ) , dilated inferior vena cava without inspiratory collapse ( P = @ ) , E/e ' ratio @ ( P = @ ) , and the right ventricle forming the heart apex ( P = @ ) .