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Published on: May 21, 2017
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.
Abstract:
Background: Sarcopenia, characterized by the loss of skeletal muscle mass, is an emerging comorbidity associated with poor outcomes in cardiovascular surgery. Its impact on mortality in patients undergoing valve surgery for infective endocarditis (IE) remains underexplored. This study investigates the relationship between sarcopenia, measured by the Psoas muscle area index (PMAi), and mortality in patients with IE undergoing valve surgery. Materials and Methods: We retrospectively analyzed 68 patients with IE who underwent valve surgery at a tertiary care center from 2013 to 2021. Sarcopenia was defined as being in the lowest quartile of PMAi, measured via preoperative computed tomography (CT). Baseline characteristics, survival outcomes, and factors influencing mortality were analyzed using Kaplan-Meier survival curves and Cox proportional hazards regression. The predictive value of PMAi for 1-year and 3-year mortality was assessed via receiver operating characteristic (ROC) curves. Results: Sarcopenia was strongly associated with increased mortality at both 1-year (HR: 0.378, p = 0.010) and 3-year follow-ups (HR: 0.457, p = 0.012). Female sex (OR: 275.748, p < 0.001) and older age (OR: 9.995, p = 0.003) were significant predictors of sarcopenia. Chronic kidney insufficiency (CKI) and the use of heart failure medication therapy also significantly impacted survival outcomes. Conclusions: Sarcopenia is a strong independent predictor of short- and mid-term mortality in patients undergoing valve surgery for IE. Routine radiological assessment of sarcopenia using PMAi could improve risk stratification and guide preoperative interventions. Tailored management strategies, especially in older women and patients with CKI, may enhance outcomes in this high-risk population.
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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