ASSESSMENT OF INTER-CHAMBER FUNCTIONAL RELATIONSHIPS IN SEVERE PULMONARY ARTERIAL HYPERTENSION USING SIMULTANEOUS STRAIN MEASUREMENTS IN FOUR CARDIAC CHAMBERS

Severe pulmonary arterial hypertension (PAH) has high mortality, often secondary to right ventricular failure. It is difficult to predict when PAH patients may decompensate. We hypothesized that inter-chamber relationships using simultaneous measurement of longitudinal strain (LS) in all 4 cardiac