Biventricular function after Ebstein's anomaly repair from a single-center echocardiography study

Background We aimed to examine bi-ventricular remodeling and function following Ebstein’s anomaly (EbA) surgical correction using echocardiographic techniques, particularly the relations between the bi-ventricular changes and the EbA types. Methods From April 2015 to August 2022, 110 patients with EbA were included in this retrospective study based on the Carpentier classification. Echocardiography assessments during the preoperative, early, and mid-term postoperative periods were performed. Results The 54 patients with types A and B EbA were included in group 1, whereas the 56 with types C and D were in group 2. Seventy-eight patients underwent surgical correction of EbA. The median age at operation was 8.8 years. During the mid-term follow-up, only 9.1% of the patients had moderate or severe tricuspid regurgitation. Right ventricular (RV) systolic function worsened in group 2 at discharge (fractional area change: 27.6±11.2 versus 35.4±11.5 [baseline], P<0.05; global longitudinal strain: -10.8±4.4 versus -17.9±4.7 [baseline], P=0.0001). RV function slowly recovered at a mean of 12-month follow-up. Regarding left ventricular (LV) and RV systolic function, no statistical difference was found between before and after surgery in group 1. Conclusions A high success rate of surgical correction of EbA with an encouraging durability of the valve was noted. Bi-ventricular systolic function was maintained fairly in most patients with types A and B postoperatively. A late increase in RV systolic function after an initial reduction and unchanged LV systolic function were observed in the patients with types C and D postoperatively.