Nutrients (Oct 2023)

Rectus Femoris Cross-Sectional Area and Phase Angle asPredictors of 12-Month Mortality in Idiopathic Pulmonary Fibrosis Patients

  • Rocío Fernández-Jiménez,
  • Eva Cabrera Cesar,
  • Ana Sánchez García,
  • Francisco Espíldora Hernández,
  • Isabel M. Vegas-Aguilar,
  • Maria del Mar Amaya-Campos,
  • Isabel Cornejo-Pareja,
  • Patricia Guirado-Peláez,
  • Victor Simón-Frapolli,
  • Mora Murri,
  • Lourdes Garrido-Sánchez,
  • Alvaro Martínez Mesa,
  • Lorena Piñel-Jimenez,
  • Miguel Benítez-Cano Gamonoso,
  • Lara Dalla-Rovere,
  • Maria García Olivares,
  • Jose Luis Velasco-Garrido,
  • Francisco Tinahones-Madueño,
  • José Manuel García-Almeida

DOI
https://doi.org/10.3390/nu15204473
Journal volume & issue
Vol. 15, no. 20
p. 4473

Abstract

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Background: The value of the phase angle (PhA), measured via bioelectrical impedance analysis (BIA), could be considered a good marker of the cell mass and the cell damage of a patient; however, there are new techniques, such as muscle ultrasonography, that allow the quantity and quality of muscle to be assessed in a minimally invasive way. The aim of this study is to determine the prognostic value of morphofunctional techniques in the prognosis of mortality in patients with idiopathic pulmonary fibrosis (IPF). Methods: This multicenter, cross-sectional study included 86 patients with idiopathic pulmonary fibrosis with a mean age of 71 years, 82.7% of whom were male. The nutritional risk of the patients was assessed by means of questionnaires, such as the Subjective Global Assessment (SGA), and non-invasive functional techniques, including BIA, nutritional ultrasound, and hand grip strength (HGS). Statistical analysis of the sample was performed using JAMOVI version 2.3.22. Results: Correlations were made between the RF-CSA techniques with PhA (r = 0.48, p p p p 2 (AUC = 0.857, sensitivity of 64.4% and specificity of 100.0%), 6MMW = 420 m (AUC = 0.830, sensitivity of 63.27% and specificity of 100.0%), and TUG = 7.2 s (AUC = 0.771, sensitivity of 100.0% and specificity of 56.67%). In addition, a multivariate analysis was performed with RF-CSA, HR = 8.11 (1.39–47.16, p = 0.020), and PhA of 6.35 (1.29–31.15, p = 0.023), taking into account age, sex, and BMI to determine mortality. Finally, a Kaplan–Meier survival analysis was conducted with low or normal values for classical parameters (GAP and T6MM) and new parameters (PhA, BCM, RF-CSA, and TUG). Conclusion: RF-CSA and PhA were shown to be good prognostic markers of 12-month mortality and could, therefore, be useful screening tools to complement the nutritional assessment of IPF patients.

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