Effect of preoperative erector spinae muscles mass on postoperative outcomes in patients with left ventricular assist devices.

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    • Abstract:
      Background: Frailty influences the postoperative outcomes in patients undergoing left ventricular assist device (LVAD) implantation. Recently, erector spinae muscle (ESM) mass has been proposed as a parameter to assess frailty accurately. Thus, the purpose of the present study was to evaluate whether preoperative ESM mass is associated with short‐ and long‐term clinical outcomes in patients with LVAD. Methods: A total of 119 consecutive patients with LVAD were enrolled between January 2010 and October 2017 at a single heart center. The ESM area, ESM index, and Hounsfield units (HU) of the ESM were calculated by computed tomography for preoperative ESM mass evaluation. We then statistically evaluated the in‐hospital mortality, major adverse cardiovascular events (MACE), duration of hospital stay, and long‐term survival. Results: In a multivariate Cox regression analysis, ESM mass indicated no effect on all clinical outcomes. In addition, the ESM area presented a weak but significant negative linear correlation only with the duration of hospital stay (r = −0.21, p <.05). In contrast, the Model For End‐stage Liver Disease (MELD) score and preoperative venous‐arterial extracorporeal membrane oxygenation (va‐ECMO) were significant predictive factors for in‐hospital mortality (MELD score: p <.001, hazard ratio [HR] 1.1; preoperative va‐ECMO: p <.01, HR 2.72) and MACE (MELD score: p <.001, HR 1.07; preoperative va‐ECMO: p <.005, HR 2.62). Conclusion: Preoperative ESM mass might predict the length of hospital stay in patients undergoing LVAD implantation. In contrast, it had no effect on MACE, in‐hospital mortality, or long‐term survival in this study. [ABSTRACT FROM AUTHOR]
    • Abstract:
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