The Value of Preoperative 3-dimensional over 2-dimensional Valve Analysis in Predicting Recurrent Ischemic Mitral Regurgitation After Mitral Annuloplasty
Overview
Authors
Affiliations
Objectives: Repair for ischemic mitral regurgitation with undersized annuloplasty is characterized by high recurrence rates. We sought to determine the value of pre-repair 3-dimensional echocardiography over 2-dimensional echocardiography in predicting recurrence at 6 months.
Methods: Intraoperative transesophageal 2-dimensional echocardiography and 3-dimensional echocardiography were performed in 50 patients undergoing undersized annuloplasty for ischemic mitral regurgitation. Two-dimensional echocardiography annular diameter and tethering parameters were measured in the apical 2- and 4-chamber views. A customized protocol was used to assess 3-dimensional annular geometry and regional leaflet tethering. Recurrence (grade ≥2) was assessed with 2-dimensional transthoracic echocardiography at 6 months.
Results: Preoperative 2- and 3-dimensional annular geometry were similar in all patients with ischemic mitral regurgitation. Preoperative 2- and 3-dimensional leaflet tethering were significantly higher in patients with recurrence (n = 13) when compared with patients without recurrence (n = 37). Multivariate logistic regression revealed preoperative 2-dimensional echocardiography posterior tethering angle as an independent predictor of recurrence with an optimal cutoff value of 32.0° (area under the curve, 0.81; 95% confidence interval, 0.68-0.95; P = .002) and preoperative 3-dimensional echocardiography P3 tethering angle as an independent predictor of recurrence with an optimal cutoff value of 29.9° (area under the curve, 0.92; 95% confidence interval, 0.84-1.00; P < .001). The predictive value of the 3-dimensional geometric multivariate model can be augmented by adding basal aneurysm/dyskinesis (area under the curve, 0.94; 95% confidence interval, 0.87-1.00; P < .001).
Conclusions: Preoperative 3-dimensional echocardiography P3 tethering angle is a stronger predictor of ischemic mitral regurgitation recurrence after annuloplasty than preoperative 2-dimensional echocardiography posterior tethering angle, which is highly influenced by viewing plane. In patients with a preoperative P3 tethering angle of 29.9° or larger (especially when combined with basal aneurysm/dyskinesis), chordal-sparing valve replacement should be strongly considered.
ADEPT: A Noninvasive Method for Determining Elastic Parameters of Valve Tissue.
Wu W, Daneker M, Herz C, Dewey H, Weiss J, Pouch A ArXiv. 2025; .
PMID: 39990796 PMC: 11844617.
van Kampen A, Morningstar J, Goudot G, Ingels N, Wenk J, Nagata Y Bioengineering (Basel). 2023; 10(5).
PMID: 37237671 PMC: 10215167. DOI: 10.3390/bioengineering10050601.
Multimodal image analysis and subvalvular dynamics in ischemic mitral regurgitation.
Aly A, Saito Y, Bouma W, Pilla J, Pouch A, Yushkevich P JTCVS Open. 2022; 5:48-60.
PMID: 36003177 PMC: 9390375. DOI: 10.1016/j.xjon.2020.10.007.
Nam H, Herz C, Lasso A, Cianciulli A, Flynn M, Huang J J Am Soc Echocardiogr. 2022; 35(9):985-996.e11.
PMID: 35537615 PMC: 9452462. DOI: 10.1016/j.echo.2022.04.015.
Herz C, Pace D, Nam H, Lasso A, Dinh P, Flynn M Front Cardiovasc Med. 2021; 8:735587.
PMID: 34957233 PMC: 8696083. DOI: 10.3389/fcvm.2021.735587.