Redo minimally invasive mitral valve surgery: feasibility, practical benefits, and surgical pitfalls from a single-center experience.

Authors

Kosuke Nakamae, Yoshitsugu Nakamura, Miho Kuroda, Shintaro Sawa, Kusumi Niitsuma, Yuto Yasumoto, Taisuke Nakayama, Hiroaki Yusa, Ryo Tsuruta, Yujiro Ito

Published in

General thoracic and cardiovascular surgery. Oct 27, 2026. Epub Oct 27, 2026.

Abstract

To describe surgical outcomes, technical considerations, and feasibility of redo minimally invasive mitral valve surgery using initial cases as a reference cohort.
A single-center, retrospective review of minimally invasive mitral valve surgery performed between January 2014 and January 2024 was conducted. Perioperative data, mid-term survival, and cardiac-related events were assessed in both initial and redo groups.
A total of 647 patients were included: 30 in the redo group and 617 in the initial group. The redo group had higher European System for Cardiac Operative Risk Evaluation II scores (p < 0.001). In the redo group, 26 (86.7%) had undergone previous cardiac surgery via sternotomy, and 18 (60.0%) had previous mitral valve surgery. The operative time was longer in the redo group (p = 0.041), while the cross-clamping time was longer in the initial group (p = 0.019), and cardiopulmonary bypass time was comparable between groups (p = 0.95). Intubation time (p = 0.049), intensive care unit stay (p = 0.020), and in-hospital stay (p = 0.003) were longer in the redo group. However, there were no significant differences in postoperative chest tube output for 24 h (p = 0.32) or blood transfusion requirements (p = 0.087). The overall survival rates at 5 years were 70.7% (95% CI: 41.0%-87.0%) vs. 92.0% (95% CI: 88.0%-94.0%) for the redo and initial groups, respectively. Freedom from cardiac-related events did not significantly differ between groups.
Redo minimally invasive mitral valve surgery was feasible despite higher surgical risk and longer operative times. Early and mid-term cardiac-related outcomes appeared acceptable, although overall survival was lower in redo cases.

PMID:
42945027
Bibliographic data and abstract were imported from PubMed on 28 Oct 2026.

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