Impact of Psoas Muscle Area Index on Short- and Mid-Term Mortality in Patients Undergoing Valve Surgery for Infective

Christian Dinges1, Matthias Hammerer2, Nikolaos Schörghofer3

  • 1Department of Cardiovascular and Endovascular Surgery, Paracelsus Medical University of Salzburg, 5020 Salzburg, Austria.

PubMed

Insights

Sarcopenia, or loss of skeletal muscle mass, predicts higher mortality after valve surgery for infective endocarditis. Assessing sarcopenia using Psoas muscle area index (PMAi) can improve risk stratification for these high-risk patients.

Area of Science:

  • Cardiology
  • Geriatrics
  • Surgical Outcomes

Background:

  • Sarcopenia is an emerging comorbidity in cardiovascular surgery.
  • Its impact on mortality in infective endocarditis (IE) valve surgery patients is underexplored.

Purpose of the Study:

  • To investigate the relationship between sarcopenia, measured by Psoas muscle area index (PMAi), and mortality in IE patients undergoing valve surgery.

Main Methods:

  • Retrospective analysis of 68 IE patients undergoing valve surgery (2013-2021).
  • Sarcopenia defined by lowest quartile of preoperative PMAi (CT scan).
  • Kaplan-Meier curves, Cox regression, and ROC curves analyzed survival and predictors.

Main Results:

  • Sarcopenia strongly associated with increased 1-year (HR: 0.378) and 3-year (HR: 0.457) mortality.
  • Female sex and older age predicted sarcopenia.
  • Chronic kidney insufficiency and heart failure medication impacted survival.

Conclusions:

  • Sarcopenia is an independent predictor of short- and mid-term mortality in IE valve surgery patients.
  • Routine radiological assessment of sarcopenia (PMAi) can enhance risk stratification.
  • Tailored interventions for older women and patients with CKI may improve outcomes.

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