Zhuang C, Chen Y, Ruan J, Yu H, Zhu P, Zhu Y. Correlation between the prognostic nutritional index and outcomes in older patients aged ≥ 60 years with chronic heart failure.
Int J Clin Pharm 2023;
45:163-173. [PMID:
36378403 DOI:
10.1007/s11096-022-01501-9]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/07/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND
Nutritional status is related to clinical outcomes in patients with chronic heart failure (CHF). The prognostic nutritional index (PNI) is a simple tool to assess nutrition.
AIM
To evaluate the association between the PNI score and clinical outcomes in patients (60 years and older) hospitalized due to an acute exacerbation of CHF.
METHOD
This was a retrospective observational study. Patients hospitalized for acute CHF exacerbation between July 2015 and May 2020 were analyzed. Patients were followed until January 31, 2021. The primary end point was cardiovascular-related readmissions and all-cause mortality after hospital discharge. Secondary outcomes were factors associated with all-cause mortality. Patients were divided into normal nutrition (PNI > 38), moderate malnutrition (PNI = 35-38), and severe malnutrition (PNI < 35) groups.
RESULTS
The study included 355 patients (mean age 78 ± 9 years). The median follow-up was 769 days. Compared to survivors (n = 214), patients who expired (n = 133) were (1) older; (2) had lower PNI scores, lymphocyte counts, hemoglobin, albumin, total cholesterol, and serum sodium level; but (3) had higher serum creatinine levels, log(N-terminal-pro-B-type natriuretic peptide), and cardiac troponin I (P < 0.05). Multivariate analyses revealed that PNI was independently associated with all-cause mortality. The hazard ratio (HR) for moderate malnutrition versus normal nutrition was 1.624 (95% confidence interval [CI] 1.011-2.609, P = 0.045), while HR for severe malnutrition versus normal nutrition was 1.892 (95%CI 1.119-3.198, P = 0.017). Malnourished patients had significantly higher rates of cardiovascular readmissions and all-cause mortality.
CONCLUSION
Lower PNI (malnutrition) was associated with worse clinical outcomes and was independently associated with all-cause mortality in patients with CHF.
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