Clinical value of right ventricular morphology in children with congenital heart disease associated pulmonary hypertension

Objective To investigate clinical value of right ventricular morphology in children with congenital heart disease associated pulmonary hypertension. Methods From October 2014 to October 2017, 37 children with congenital heart disease without associated pulmonary hypertension (resting pulmonary systolic pressure ≤ 30 mmHg, 1 mmHg=0.133 kPa) were selected as group A. Thirty-seven children with congenital heart disease and associated pulmonary hypertension (resting pulmonary systolic pressure>30 m). were in group B, and 37 healthy children were in control group.Echocardiography was performed to compare the results of right ventricular morphology and systolic function in three groups. Results (1)Right ventricular morphology indexes: right atrium upper and lower diameter((56.8±4.0) mm), right atrium left and right diameter((49.2±3.3) mm), right ventricle basal segment inner diameter((43.7±2.5) mm), right ventricle medial diameter((41.7±3.9) mm), right ventricle long axis distance((73.4±6.2) mm), sternum sidelines right ventricular outflow tract proximal end diameter((37.8±2.4) mm), short axis view right ventricular outflow tract distal internal diameter((33.6±2.1) mm), main pulmonary artery internal diameter((30.5±2.5)mm), right ventricle end diastolic area((31.6±1.8) cm2), right ventricle end systolic area((19.0±2.7) cm2)in group B were higher than those in group A((46.2±3.1) mm, (40.4±2.8) mm, (34.6±2.2) mm, (32.5±2.6) mm, (65.1±4.7) mm, (30.2±2.0) mm, (29.4±1.8) mm, (23.0±1.6) mm, (22.5±1.1) cm2, (11.6±1.2) cm2)and control group((45.3±2.6) mm, (39.5±1.7) mm, (34.0±1.9) mm, (31.8±2.0) mm, (63.2±3.8) mm, (29.6±1.7) mm, (28.9±1.5) mm, (22.4±1.4) mm, (22.1±1.0) cm2, (11.3±0.9) cm2), (F=140.26, 147.47, 223.08, 130.46, 43.56, 183.33, 74.71, 209.94, 587.99, 221.34, all P<0.01 ). (2)Right ventricle contractile function indexes : right ventricular area change rate((40.1±1.6)%), three tricuspid ring systolic displacement((2.2±0.2) cm), tricuspid valve peak systolic flow velocity((13.8±0.9) cm/s)in group B were lower than those in group A((46.3±1.7)%, (2.5±0.3) cm, (16.7±1.2) cm/s)and control group((46.8±1.5)%, (2.6±0.3) cm, (17.2±1.4) cm/s), the difference was statistically significant(F=200.81, 21.86, 88.85, all P<0.01 ). Conclusion Children with congenital heart disease associated pulmonary hypertension have right ventricle morphological changes and right ventricular systolic function decreasing.Right ventricular morphological examination has important clinical value. Key words: Congenital heart disease associated pulmonary hypertension; Right ventricular morphology; Children