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中华临床医师杂志(电子版) ›› 2017, Vol. 11 ›› Issue (18) : 2229 -2233. doi: 10.3877/cma.j.issn.1674-0785.2017.18.004

所属专题: 文献

临床论著

血尿酸肌酐比对老年慢性阻塞性肺疾病患者气流受限程度的预测价值
孙丹1, 付志方1, 焦红梅1, 李虹1, 刘新民1,()   
  1. 1. 100034 北京,北京大学第一医院老年内科
  • 收稿日期:2017-08-27 出版日期:2017-09-15
  • 通信作者: 刘新民

Value of serum uric acid to creatinine ratio in predicting airflow limitation in elderly patients with chronic obstructive pulmonary disease

Dan Sun1, Zhifang Fu1, Hongmei Jiao1, Hong Li1, Xinmin Liu1,()   

  1. 1. Department of Geriatrics, Peking University First Hospital, Beijing 100034, China
  • Received:2017-08-27 Published:2017-09-15
  • Corresponding author: Xinmin Liu
  • About author:
    Corresponding author: Liu Xinmin, Email:
引用本文:

孙丹, 付志方, 焦红梅, 李虹, 刘新民. 血尿酸肌酐比对老年慢性阻塞性肺疾病患者气流受限程度的预测价值[J]. 中华临床医师杂志(电子版), 2017, 11(18): 2229-2233.

Dan Sun, Zhifang Fu, Hongmei Jiao, Hong Li, Xinmin Liu. Value of serum uric acid to creatinine ratio in predicting airflow limitation in elderly patients with chronic obstructive pulmonary disease[J]. Chinese Journal of Clinicians(Electronic Edition), 2017, 11(18): 2229-2233.

目的

探讨血尿酸肌酐比(UA/Cr)对老年慢性阻塞性肺疾病(COPD)患者气流受限程度的预测价值。

方法

回顾性分析2010年1月至2017年8月北京大学第一医院诊断为COPD的110例老年患者(COPD组),所有患者为COPD稳定期。根据第1秒用力呼气容积(FEV1)占预计值百分比(FEV1%预计值)对气流受限严重程度分级,其中慢性阻塞性肺疾病全球倡议(GOLD)1、2级(轻/中度气流受限)71例,GOLD3、4级(重/极重度气流受限)39例。收集同期在北京大学第一医院诊治109例老年非COPD患者(对照组)临床资料。比较2组患者年龄、性别、体质量指数(BMI)、吸烟情况、高血压、糖尿病、冠心病患病情况、血清尿酸(UA)、血清肌酐(Cr)、血糖、血脂和超敏C反应蛋白(hs-CRP)。行Spearman秩相关与逐步线性回归分析与UA/Cr相关因素。用受试者工作特征曲线(ROC曲线)评估UA/Cr对COPD患者气流受限程度的预测价值。

结果

COPD组和对照组在年龄、性别、BMI、高血压及糖尿病比例、Cr、空腹血糖和血脂差异均无统计学意义;COPD组患者吸烟情况高于对照组[21(0,150)包?年vs 0(0,80)包?年,Z=-7.014,P<0.001],冠心病患者比例高于对照组[47.3%(52/110)vs 28.4%(31/109),χ2=8.250,P=0.004],UA水平高于对照组[(355.41±77.13)μmol/L vs (319.30±61.25)μmol/L,t=-3.834,P<0.001],UA/Cr比值高于对照组[(3.82±0.74)vs(3.45±0.63),t=-4.052,P<0.001],hs-CRP水平高于对照组[1.32(0.01,14.70)mg/L vs 0.50(0.00,5.50)mg/L,Z=-5.311,P<0.001]。重度/极重度气流受限患者UA水平高于轻/中度气流受限患者[(389.49±82.79)μmol/L vs (336.69±67.38)μmmol/L,t=-3.620,P<0.001],UA/Cr水平高于轻/中度气流受限患者[(4.15±0.72)vs(3.64±0.70),t=-3.585,P=0.001]。Spearman相关分析显示,UA/Cr与年龄、FEV1%预计值呈负相关(r=-0.196,P=0.041;r=-0.337,P<0.001)。以UA/Cr为因变量的逐步线性回归分析结果显示,FEV1%预计值与UA/Cr升高相关(β=-0.010,t=-3.029,P=0.003)。UA/Cr预测老年COPD患者重度/极重度气流受限的ROC曲线下面积为0.70(P=0.001)。

结论

UA/Cr对老年COPD患者气流受限程度有一定的预测价值。

Objective

To assess the value of serum uric acid (UA) to creatinine (Cr) ratio in predicting airflow limitation in elderly patients with stable chronic obstructive pulmonary disease (COPD).

Methods

One hundred and ten stable COPD patients (COPD group) aged 60 years were enrolled at the Department of Geriatrics of Peking University First Hospital from January 2010 to December 2017. These patients were divided into two subgroups: patients with mild-to-moderate airflow limitation [GOLD stages 1 and 2; forced expiratory volume in one second percent (FEV1%) predicted ≥ 50%, n=71] and those with severe-to-very severe airflow limitation (GOLD stages 3 and 4; FEV1% predicted < 50%, n=39). One hundred and nine elderly patients without COPD were collected as controls in the same period at the same hospital. Age, gender, body mass index (BMI), smoking pack-years, medical history, serum UA, serum Cr, blood glucose, blood lipids, and high-sensitive C-reactive protein (hs-CRP) were compared between the two groups. Factors associated with UA/Cr ratio were analyzed by Spearman′s rank correlation and stepwise multivariate analysis. Receiver operating characteristic (ROC) curve analysis was performed to assess the value of UA/Cr ratio in predicting airflow limitation in elderly patients with stable COPD.

Results

Age, gender, BMI, the percentage of patients with hypertension or diabetes mellitus, Cr, blood glucose, and blood lipids were comparable between the two groups. Smoking index [21 (0, 150) pack-years vs 0 (0, 80) pack-years, Z=-7.014, P<0.001], the percentage of patients with coronary heart disease (47.3% vs 28.4%, χ2=8.250, P=0.004), serum UA level [(355.41±77.13) μmol/L vs (319.30±61.25) μmol/L, t=-3.834, P<0.001], UA/Cr ratio [3.82±0.74 vs 3.45±0.63, t=-4.052, P<0.001], and hs-CRP [1.32 (0.01, 14.70) mg/L vs 0.50 (0.00, 5.50) mg/L, Z=-5.311, P<0.001] were significantly higher in the COPD group than in the control group. Serum UA [(389.49±82.79) μmol/L vs (336.69±67.38) μmol/L, t=-3.620, P<0.001] and UA/Cr ratio (4.15±0.72 vs 3.64±0.70, t=-3.585, P=0.001) were significantly higher in patients with severe-to-very severe airflow limitation than in patients with mild-to-moderate airflow limitation. Spearman′s rank correlation analysis showed that age and FEV1% predicted were negatively correlated with UA/Cr ratio (r=-0.196, P=0.041; r=-0.337, P<0.001, respectively). Stepwise multivariate analysis showed that, using UA/Cr ratio as the dependent variable, FEV1% predicted was associated with increased UA/Cr ratio (β=-0.010, t=-3.029, P=0.003). ROC analysis showed that the area under the ROC curve of UA/Cr ratio for predicting severe-to-very severe airflow limitation was 0.70 (P=0.001).

Conclusion

UA/Cr ratio has significant predictive value for airflow limitation in elderly patients with COPD.

表1 2组患者一般临床资料比较
表2 不同气流受限程度的老年COPD患者UA、Cr比较
表3 以UA/Cr为因变量的多元线性回归分析
图1 UA/Cr预测重/极重度气流受限的ROC曲线
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