Left ventricular dyssynchrony is associated with recurrence of ischemic mitral regurgitation after restrictive annuloplasty

Leen Van Garsse, Sandro Gelsomino, Fabiana Lucà, Orlando Parise, Roberto Lorusso, Emile Cheriex, Sabina Caciolli, Enrico Vizzardi, Carmelo Massimiliano Rao, Rocco Carella, Gian Franco Gensini, Jos Maessen

Research output: Contribution to journalArticlepeer-review

Abstract

Background: In our study, we investigated the impact of papillary muscle systolic dyssynchrony (DYS-PAP) obtained by 2D speckle-tracking echocardiography (2D-STE) in the prediction of recurrent ischemic mitral regurgitation (MR) after restrictive annuloplasty. Methods: The study population consisted of 524 consecutive patients who survived coronary artery bypass grafting (CABG) and restrictive annuloplasty, performed between 2001 and 2010 at 3 different Institutions and who met inclusion criteria. The assessment of DYS-PAP was performed preoperatively and at follow-up (median 45.3 months [IQR 26-67]) by 2D-STE in the apical four-chamber view for the anterolateral papillary muscle (ALPM) and apical long-axis view for the posteromedial papillary muscle (PMPM). Results: Recurrence of MR (≥ 2 + in patients with no/trivial MR at discharge) was found in 112 patients (21.3%) at follow-up. Compared to patients without recurrence of MR, these patients had higher DYS-PAP values at baseline (60.6 ± 4.4 ms vs. 47.2 ± 2.9 ms, p <0.001) which significantly worsened at follow-up (74.4 ± 5.2 ms, p = 0.002 vs. baseline). In contrast, in patients with no MR recurrence, DYS-PAP was significantly reduced (25.3 ± 4.4 ms, p = 0.002 vs. baseline). At logistic regression analysis DYS-PAP (odds ratio [OR]: 4.8, 95% Confidence Interval [CI]: 3.4-8.2, p <0.001), was the strongest predictor of recurrent MR with a cutoff ≥ 58 ms (95%CI 51-66 ms). The model showed an area under the Receiver Operating Characteristic (ROC) curve of 0.97 (CI 0.94-0.99 [optimism-corrected 0.94; CI 0.89-0.95]) with 98% sensitivity (CI 96-100% [optimism-corrected 95%; CI 91-96%]) and 90% specificity (CI 85-94% [optimism-corrected 87%; CI 82-90%]). Conclusions: DYS-PAP represents a reliable tool to identify patients with ischemic MR who can benefit from restrictive annuloplasty.

Original languageEnglish
Pages (from-to)176-184
Number of pages9
JournalInternational Journal of Cardiology
Volume168
Issue number1
DOIs
Publication statusPublished - Sep 20 2013

Keywords

  • Echocardiography
  • Mitral valve
  • Myocardial infarction

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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