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Related Experiment Videos

Mitral valve surgery in patients with severe left ventricular dysfunction.

E S Bishay1, P M McCarthy, D M Cosgrove

  • 1Department of Thoracic and Cardiovascular Surgery, The Cleveland Clinic Foundation, Cleveland, OH 44195, USA.

European Journal of Cardio-Thoracic Surgery : Official Journal of the European Association for Cardio-Thoracic Surgery
|April 12, 2000
PubMed
Summary

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Mitral valve surgery significantly improves survival and functional status in patients with severe left ventricular (LV) dysfunction and mitral regurgitation. This intervention offers substantial benefits, warranting broader consideration for eligible cardiomyopathy patients.

Area of Science:

  • Cardiovascular Surgery
  • Heart Failure Management
  • Valvular Heart Disease

Background:

  • Severe left ventricular (LV) dysfunction and mitral regurgitation (MR) present significant therapeutic challenges.
  • Patients often experience recurrent heart failure hospitalizations and poor functional capacity.
  • Surgical intervention for mitral valve disease in this high-risk group remains a subject of ongoing evaluation.

Purpose of the Study:

  • To evaluate survival rates following mitral valve surgery in patients with severe LV dysfunction and MR.
  • To assess functional status and freedom from heart failure readmissions post-surgery.
  • To analyze changes in LV dimensions and function after mitral valve repair or replacement.

Main Methods:

  • Retrospective analysis of 44 patients with LV ejection fraction <35% undergoing mitral valve repair (n=35) or replacement (n=9) between 1990-1998.

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  • Patients had severe mitral regurgitation due to various etiologies including valvular, ischemic, and dilated cardiomyopathy.
  • Follow-up averaged 40 months, assessing survival, New York Heart Association (NYHA) class, and hospital readmissions.

    • Main Results:

    • One perioperative death (2.3%); 1-, 2-, and 5-year survival rates were 89%, 86%, and 67%, respectively.
    • Significant improvement in NYHA class from 2.8 preoperatively to 1.2 postoperatively (P<0.0001).
    • 5-year freedom from heart failure readmission was 72%; late deaths primarily due to heart failure and sudden death.

    Conclusions:

    • Mitral valve surgery provides significant symptomatic improvement and survival benefits for patients with severe LV dysfunction and mitral regurgitation.
    • The procedure leads to enhanced functional capacity and reduced heart failure rehospitalizations.
    • Consideration for broader application of mitral valve surgery in cardiomyopathy patients with severe MR is recommended.