Laboratory Medicine ›› 2024, Vol. 39 ›› Issue (5): 474-479.DOI: 10.3969/j.issn.1673-8640.2024.05.011

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Relationship between uric acid/creatinine ratio and neutrophil/lymphocyte ratio and hypoxemia in patients with acute exacerbation of chronic obstructive pulmonary disease

ZHOU Ruiling1, ZHANG Xinyu1, REN Xiaoling2, ZHANG Wen1, FAN Changzheng1, ZHANG Qiong1()   

  1. 1. Xiyuan Hospital of China Academy of Chinese Medical Sciences,Beijing 100091,China
    2. Guang'anmen Hospital,China Academy of Chinese Medical Sciences,Beijing 100053,China
  • Received:2023-04-14 Revised:2023-12-14 Online:2024-05-30 Published:2024-06-12

Abstract:

Objective To investigate the clinical roles of uric acid(UA)/creatinine(Cr)ratio and neutrophil/lymphocyte ratio(NLR)in patients with acute exacerbation of chronic obstructive pulmonary disease(AECOPD) combined with hypoxemia. Methods The clinical data of 126 patients with AECOPD in Xiyuan Hospital of China Academy of Chinese Medical Sciences from January 2019 to December 2021 were analyzed retrospectively,and the 126 patients were classified into hypoxemia group [86 cases,partial pressure of oxygen(PaO2)<83 mmHg] and non-hypoxemia group(40 cases,PaO2≥ 83 mmHg) according to the level of PaO2. The differences of traditional Chinese medicine syndromes,clinical data and related laboratory indexes were compared between the 2 groups. The correlation of UA/Cr ratio,NLR and forced expiratory volume in one second(FEV1)/forced vital capacity(FVC),percentage of forced expiratory volume in one second in predicted value(FEV1pred%),chronic obstructive pulmonary disease assessment test(CAT)score and modified Medical Research Council (mMRC) dyspnea grade of patients with AECOPD combined with hypoxemia was analyzed by Spearman/Pearson correlation analysis. Receiver operating characteristic(ROC) curves were used to analyze the efficacy of UA/Cr ratio and NLR single and combined determinations in predicting hypoxemia in AECOPD patients. Results The UA/Cr ratio and NLR in hypoxemia group were higher than those in non-hypoxemia group(P<0.001). There was no statistical significance in the proportion of patients with traditional Chinese medicine syndromes between the 2 groups (P>0.05). UA/Cr ratio and NLR were positively correlated with CAT score and mMRC dyspnea grade(P<0.05) and were negatively correlated with FEV1/FVC and FEV1pred%(P<0.05). ROC curve analysis showed that the areas under curves of UA/Cr ratio and NLR single and combined determinations of AECOPD patients with hypoxemia were 0.792,0.768 and 0.876,respectively. Conclusions UA/Cr ratio and NLR can be used to predict patients with AECOPD combined with hypoxemia,and the combined determination is effective.

Key words: Chronic obstructive pulmonary disease, Hypoxemia, Uric acid/creatinine ratio, Neutrophil/lymphocyte ratio, Traditional Chinese medicine syndrome

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