A. Right Ventricular Thickness was higher in patients with aplastic anemia and myelofibrosis as compared to patients with chronic myelogenous leukemia (CML) (ANOVA p = 0.02). Right Ventricular Systolic Pressure (RVSP) was highest in patients with myelofibrosis, with average levels that would qualify as pulmonary hypertension (mean RVSP 36.7). Aplastic anemia patients tended to have higher RVSP as compared to patients with CML, but levels were generally lower than what would qualify as pulmonary hypertension (ANOVA p < 0.01). P-values for comparison of mean between groups was obtained using Tukey’s HSD test.
B. RV Free wall thickness measured by echocardiography. Upper and lower panels showing normal and pathological thickening of RV wall respectively.