Abstract
Objective: We assess the right ventricular in patients with group 1 pulmonary arterial hypertension by echocardiography.
 Method and Results: 45 patients with group 1 pulmonary arterial hypertension was measured the right ventricular by echocardiography between September 2021 and October 2022. Right ventricular diameter and Right ventricular area in patients with idiopathic pulmonary arterial hypertension were not significantly different in patients with secondary pulmonary arterial hypertension (35.7 ± 10.1 mm versus 30.8 ± 9 mm; p=0,12) và (24.1 ± 11.6 cm2 versus 19.7 ± 7 cm2; p=0,12). However, right ventricular function in patients with idiopathic pulmonary arterial hypertension were significantly lower than in patients with secondary pulmonary arterial hypertension via %FAC (28.3 ± 8.5 versus 38.8 ± 8.3; p<0,001), TAPSE (14.2 ± 3.1 mm versus 19.4 ± 3.5 mm; p<0,001), S’tricuspid (9.6 ± 2.2 cm/s versus 11.7 ± 1.9;p=0,002).[1]
 Conclusion: Right ventricular function in patients with idiopathic pulmonary arterial hypertension was significantly lower than in patients with secondary arterial pulmonary hypertension.
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