Right and left ventricular interactions, strain, and remodeling in repaired pulmonary stenosis patients with preserved right ventricular ejection fraction: A cardiac magnetic resonance study

Background Right ventricular dilation and dysfunction is a common long‐term complication in patients with repaired pulmonary stenosis (rPS). Additionally, abnormal right and left ventricular interactions have been reported in right‐sided heart defect after intervention, including in pulmonary stenosis. Purpose To analyze ventricular strain, remodeling, and left and right ventricular interactions in rPS patients with preserved right ventricular ejection fraction (RVEF) compared with healthy children using cardiac magnetic resonance. Study Type A cross‐sectional study. Population In all, 34 rPS patients and 10 healthy children volunteers (controls). Field Strength/Sequence 3.0T/2D balanced steady‐state free precession (2D b‐SSFP) cine, late gadolinium enhancement (LGE), and 2D phase contrast (2D‐PC). Assessment Pulmonary regurgitation (PR) fractions of the main pulmonary artery, biventricular volumes, masses, function, and cardiac strain. Statistical Tests Mann–Whitney U‐test, t‐test, Pearson correlation coefficients, Spearman's correlation coefficients, and intraclass correlation coefficients analysis were performed. Results For group analysis, the right ventricular (RV) global circumferential strain and radial strain were significantly increased in patients when compared with controls (−13.57 ± 2.69 vs. −5.91 ± 3.16, P