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南京医科大学学报(自然科学版) 第44卷第8期
·1082 · Journal of Nanjing Medical University(Natural Sciences) 2024年8月
·临床研究·
COPD患者6MWT下指脉氧特点及运动耐力相关因素分析
陈幼花 ,李瑞久 ,倪艾珺 ,王诗绮 ,李 莉 ,宋 玮 ,孙培莉 1*
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南京医科大学第一附属医院呼吸与危重症学科,江苏 南京 210029;江苏大学附属医院呼吸与危重症医学科,江苏
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镇江 212050;常州市妇幼保健院呼吸与危重症医学科,江苏 常州 213023
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[摘 要] 目的:研究慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)稳定期患者在6 min步行试验(6⁃minute
walk test,6MWT)下脉搏血氧饱和度(pulse oxygen saturation,SpO2)和运动耐力的特点及相关因素,为COPD患者提供简便有效
的客观评估方法。方法:纳入COPD稳定期患者58例和对照组患者21例,收集一般资料、改良版英国医学研究委员会呼吸困
难问卷(modified medical research council dyspnoea scale,mMRC)评分、COPD 自我评估测试(COPD assessment test,CAT)评分、
肺功能参数(如FEV1%Pred、FVC%Pred、DLCO%Pred、DLCO/VA%Pred)和6MWT相关参数,分析SpO2和运动耐力指标的组间差异
及其与COPD常用评估指标的相关性。结果:COPD患者在6MWT出现运动SpO2下降,表现为运动性低氧(exercise⁃induced de⁃
saturation,EID),最低SpO2 (SpO2min)和平均SpO2 (SpO2mean)下降,运动SpO2低于88%、90%、92%的时间百分比(T88、T90、T92)和低氧
面积(desaturation area,DA)增加;6 min 步行距离占预计值百分比(6MWD%Pred)和低氧距离比(desaturation distance ratio,
DDR)在组间有差异;SpO2mean、DA、DDR、6MWD%Pred 均分别与 mMRC 评分、FEV1%Pred、FVC%Pred、静息 SpO2 (SpO2rest)相关,
DDR 还与 DLCO%Pred、DLCO/VA%Pred 相关,但是,多因素线性回归分析显示只有 mMRC 评分、DLCO%Pred 和 SpO2rest与 DDR 独
立相关。结论:稳定期COPD患者6MWT同步持续脉搏指脉氧检测,其检测参数SpO2mean、DA、DDR和6MWD%Pred能有效反映
COPD患者肺功能和症状,提示该评估方法有效,有助于COPD患者的评估和管理。
[关键词] 慢性阻塞性肺疾病;6 min步行试验;运动脉搏血氧饱和度下降;运动耐力;肺功能检查;合并症
[中图分类号] R563 [文献标志码] A [文章编号] 1007⁃4368(2024)08⁃1082⁃10
doi:10.7655/NYDXBNSN240229
The characteristics and correlative factors of pulse oxygen saturation and exercise
tolerance of COPD patients in 6MWT
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CHEN Youhua ,LI Ruijiu ,NI Aijun ,WANG Shiqi ,LI Li ,SONG Wei ,SUN Peili 1*
1 Department of Respiratory and Critical Care Medicine,the First Affiliated Hospital of Nanjing Medical University,
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Nanjing 210029;Department of Respiratory and Critical Care Medicine,the Affiliated Hospital of Jiangsu University,
Zhenjiang 212050;Department of Respiratory and Critical Care Medicine,Changzhou Maternal and Child Health
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Hospital,Changzhou 213023,China
[Abstract] Objective:To study the characteristics and correlative factors of pulse oxygen saturation(SpO2)and exercise tolerance
during the 6⁃min walk test(6MWT)in the stable chronic obstructive pulmonary disease(COPD)patients,aiming to provide a simple
and effective objective assessment method for COPD patients. Methods:A total of 58 stable COPD patients and 21 control subjects
were enrolled. General data,modified Medical Research Council dyspnoea scale(mMRC)score,COPD assessment test(CAT)score,
pulmonary function parameters(such as FEV1%Pred,FVC%Pred,DLCO%Pred,DLCO/VA%Pred),and 6MWT⁃related parameters were
collected. The study analyzed the differences in SpO 2 and exercise tolerance indicators between groups,and their correlation with
commonly used COPD assessment indicators. Results:COPD patients exhibited a decline in exercise SpO 2 during the 6MWT,
characterized by the occurrence of exercise⁃induced desaturation(EID),a decline in minimum SpO 2 (SpO2min)and mean SpO2 (SpO2mean),
an increase in the percentage of time with SpO 2 below 88%,90%,and 92%(T88,T90,T92)and desaturation area(DA). There were
differences in the 6 ⁃ minute walk distance(6 MWD)as a percentage of the predicted value(6MWD% Pred)and the desaturation
[基金项目] 国家重点研发计划(2018YFC1311900);呼吸系统疾病临床研究大数据与生物样本库平台
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通信作者(Corresponding author),E⁃mail:plisun9419@njmu.edu.cn