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Prevalence and prognostic value of malnutrition in patients with IPF using three scoring systems
Qinxue Shen1, Shiting Zhou1, Min Song1
1Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China; Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, 410011, China; The Clinical Medical Research Center for Pulmonary and Critical Care Medicine in Hunan Province, 410011, China; Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, 410011, China.
Background:
To describe the nutritional status of IPF patients, report clinical associations and evaluate the prognostic value of them in IPF.
Methods:
264 IPF patients diagnosed with IPF at the Second Xiangya Hospital of Central South University between January 2011 and January 2021 were recruited. Three different scoring systems, including nutritional risk index (NRI), controlling nutritional status (CONUT) score, and prognostic nutritional index (PNI) were used to describe the nutritional status of IPF patients.
Result:
This study investigated the prevalence of malnutrition in 264 IPF patients, of which the percentage with malnutrition varied from 37.5 % with the NRI, to 47.4 % with the CONUT score, and to 6.4 % with the PNI. The moderate to severe malnutrition ranged from 10.2 % to 31.1 % across these indices, with PNI identifying only 4.9 % in this category. Worsening malnutrition status was associated with significantly higher incidence of all-cause mortality and IPF death regard of the malnutrition index as NRI (p < 0.05). When the normal nutrition of NRI was used as a reference, patients in the moderate to severe risk remained at a higher risk of all-cause death (HR = 2.06(1.25-3.41)) and IPF death(HR = 2.36(1.35-4.15)). The adjusted multivariate analysis, identified age(HR = 1.13(1.08-1.20)), DLCO <60, % predicted (HR = 3.31(1,24-9.42)) and the use of anti-fibrotic drugs (HR = 0.25(0.10-0.60)) as independent predictors of mortality.
Conclusions:
Malnutrition is common among patients with IPF and the baseline as diagnosis of IPF is strongly related to increased mortality.
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