Correlation between inferior vena cava collability index and malnutrition in critical patients: a prospective observational study

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Background: We aimed to investigate the correlation between the inferior vena cava collability index(IVC-CI) used in the evaluation of fluid volume and the Nutrition Risk Index(NRI), Prognostic Nutrition Index(PNI), Geriatric Nutrition Risk Index(GNRI) and Controlling Nutritional Status Scoring(CONUT) used in the evaluation of malnutrition. Methods: This study is a prospective observational study. Demographic data, laboratory data, Body Max Indexes(BMI), NRI, PNI, GNRI and CONUT in the first 24 hours of admission to the intensive care unit of 96 critically ill patients admitted to the tertiary intensive care unit with assisted invasive mechanical ventilator support and IVC-CI values were recorded. Patients with an IVC-CI >45% were evaluated as hypovolemia. Of the patients, 61 (63.5%) patients with an IVC-CI value of 45%≥ were group 1, and 35 (36.5%) patients with an IVC-CI value of >45% were determined as group 2. Correlation between the IVC-CI and malnutrition scores was investigated between the groups. Results: As a result of the statistical analysis; there was a statistically significant difference between the two groups in terms of BMI, NRI, PNI, GNRI and CONUT (p<0.001). According to the correlation analysis results, NRI (rs=-0.716, p<0.001), PNI (rs=-0.743, p<0.001), GNRI (rs=-0.723, p<0.001), CONUT (rs=0.741, p<0.001) were significantly correlated with the IVC-CI. Conclusions: This study shows that there is a correlation between the IVC-CI used in the evaluation of fluid volume and malnutrition.

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