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. 2010 Jun 23;53(6):688–693. doi: 10.3345/kjp.2010.53.6.688

Fig. 1.

Fig. 1

Interventricular septal configuration (IVS) for predicting the severity of pulmonary hypertension. (A), round IVS at end-systole, systolic right ventricular (RV) pressure is estimated to be less than 50% of the systemic systolic pressure. (B), flat IVS at end-systole, systolic RV pressure is estimated to be between 50 and 100% of the systemic systolic pressure. (C), IVS bowed into the left ventricle (LV) at end-systole, systolic RV pressure is estimated to be greater than 100% of the systemic systolic pressure.