STUDY DESIGN: Prospective single-center cohort study. OBJECTIVE: To evaluate cardiac morphology, cardiac function, and pulmonary hypertension impairment in patients with idiopathic scoliosis (IS) and their changes one year after scoliosis surgery. METHODS: 70 patients with IS with predominantly thoracic curvature Cobb angle >
40° were enrolled and categorized into moderate (<
70°) and severe (≥70°) groups. Preoperative radiography and transthoracic echocardiography were performed. Postoperatively, 51 patients completed a one-year follow-up and were compared with preoperative data. RESULTS: (1) Left ventricular end-diastolic diameter (LVEDD), left ventricular global longitudinal strain (LVGLS), and e were lower and E/e was higher in the moderate vs severe group, and the aortic internal diameter and LVEF were lower in the severe group than in the control group ( CONCLUSION: Cardiac morphology, left and right heart function, and pulmonary function were impaired in patients with IS, and which showed significant improvement after posterior corrective surgery.