Outcomes of nonpledgeted horizontal mattress suture technique for mitral valve replacement

Gun Jik Kim1, Jong Tae Lee1, Young Ok Lee1

  • 1Department of Thoracic and Cardiovascular Surgery, Kyungpook National University Hospital.

Abstract

Insights

Nonpledgeted sutures in mitral valve replacement (MVR) do not increase paravalvular leak (PVL) risk. This study suggests nonpledgeted sutures are a safe alternative to pledgeted sutures for MVR, with similar outcomes for PVL and prosthetic valve endocarditis (PVE).

Area of Science:

  • Cardiovascular Surgery
  • Surgical Techniques
  • Prosthetic Valve Implantation

Background:

  • Surgeons often prefer pledgeted sutures for heart valve replacement, believing they reduce paravalvular leak (PVL).
  • The potential impact of nonpledgeted sutures on prosthetic valve endocarditis (PVE) and major PVL risk in mitral valve replacement (MVR) is less understood.

Purpose of the Study:

  • To investigate whether nonpledgeted sutures in mitral valve replacement (MVR) are associated with a decreased incidence of prosthetic valve endocarditis (PVE) and risk of major paravalvular leak (PVL).
  • To compare the outcomes of MVR using nonpledgeted versus pledgeted sutures.

Main Methods:

  • A retrospective analysis of 263 patients undergoing MVR.
  • Comparison of outcomes between 175 patients who received nonpledgeted sutures (2003-2013) and 88 patients who received pledgeted sutures (1995-2001).
  • Evaluation of the occurrence of PVL and PVE in both groups.

Main Results:

  • Paravalvular leak (PVL) occurred in 2.9% of the nonpledgeted group and 1.1% of the pledgeted group.
  • Prosthetic valve endocarditis (PVE) incidence was 2.9% in the nonpledgeted group and 1.1% in the pledgeted group.
  • No statistically significant differences in PVL or PVE rates were observed between the two suture techniques.

Conclusions:

  • Nonpledgeted suture technique can serve as a viable alternative to pledgeted sutures in the majority of mitral valve replacement (MVR) procedures.
  • The use of nonpledgeted sutures in MVR does not lead to a significant increase in the incidence of paravalvular leak (PVL).

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