目的 观察慢性阻塞性肺疾病急性加重期（AECOPD）患者应用基于Caprini量表评估的干预模式联合充气加压泵（IPC）预防静脉血栓（VTE）的效果。方法 选取河南省人民医院在2023年11月—2024年11月收入的82例AECOPD患者作为研究对象，经随机数表法分为对照组41例予以VTE常规干预，观察组41例在对照组的基础上接受基于Caprini量表评估的干预模式联合IPC预防。比较两组AECOPD患者肢体情况及深静脉血栓（VTE）发生情况、凝血指标及股静脉血流速度。结果 观察组肢体肿胀率、肢体疼痛率及VTE发生率均低于对照组（P＜0.05）。干预前，两组AECOPD患者凝血酶时间（TT）、凝血酶原时间（PT）、活化部分凝血活酶时间（APTT）、D-二聚体水平比较差异无统计学意义（P＞0.05）；干预后，两组患者TT、PT、APTT、D-二聚体水平均降低，观察组较低（P＜0.05）。干预前，两组AECOPD患者平均流速、血流峰速及阻力指数比较差异无统计学意义（P＞0.05）；干预后，两组患者平均流速、血流峰速均升高，观察组高于对照组（P＜0.05）；阻力指数均降低，观察组低于对照组（P＜0.05）。结论 AECOPD患者应用基于Caprini量表评估的干预模式联合IPC能有效降低肢体肿胀率、肢体疼痛率及VTE发生率，改善凝血指标与股静脉血流速。

   Objective To observe the effect of a Caprini score?based intervention model combined with intermittent pneumatic compression（IPC）in preventing venous thromboembolism（VTE）in patients with acute exacerbation of chronic obstructive pulmonary disease（AECOPD）．Methods A total of 82 AECOPD patients admitted to Henan Provincial People’s Hospital from November 2023 to November 2024 were selected as subjects and randomly divided into a control group（41 cases）and an observation group（41 cases）using a random number table．The control group received routine VTE prevention，while the observation group received the Caprini score?based intervention combined with IPC in addition to the routine care．The extremity conditions，occurrence of VTE，coagulation parameters，and femoral venous blood flow velocity were compared between the two groups．Results The rates of extremity swelling，extremity pain，and VTE incidence in the observation group were lower than those in the control group（P＜0.05）．Before the intervention，there were no statistically significant differences in thrombin time（TT），prothrombin time（PT），activated partial thromboplastin time（APTT），or D?dimer levels between the two groups（P＞0.05）．After the intervention，TT，PT，APTT，and D?dimer levels decreased in both groups，with lower values in the observation group（P＜0.05）．Before the intervention，there were no statistically significant differences in mean flow velocity，peak flow velocity，or resistance index between the two groups（P＞0.05）．After the intervention，mean flow velocity and peak flow velocity increased in both groups，with higher values in the observation group（P＜0.05），while the resistance index decreased，with a lower value in the observation group（P＜0.05）．Conclusions The application of a Caprini score?based intervention model combined with IPC in AECOPD patients can effectively reduce the rates of extremity swelling，extremity pain，and VTE incidence，and improve  coagulation parameters and femoral venous blood flow velocity．

目的 探讨慢性阻塞性肺疾病急性加重期（AECOPD）合并呼吸衰竭机械通气患者发生撤机相关性肺水肿（WIPE）的影响因素，以指导临床早期制定个体化干预方案。方法 前瞻性选取2022年5月～2025年5月于本院接受机械通气治疗的AECOPD合并呼吸衰竭患者209例为研究对象，依据自主呼吸试验（SBT）开始后1 h内是否发生WIPE将其分为发生组73例、未发生组136例。统计两组临床资料，通过单因素、多因素Logistic回归分析确定WIPE发生的影响因素，基于回归分析构建预测模型，并验证模型的预测效能。结果 发生组年龄、入院时急性生理与慢性健康评分系统Ⅱ（APACHEⅡ）评分、浅快呼吸指数、入院时肺部超声评分、糖尿病占比、机械通气治疗24 h后动脉血二氧化碳分压（PaCO2）≥80 mmHg占比、机械通气时间≥7 d占比、吸烟史占比、合并多器官功能障碍综合征（MODS）占比、合并左心室舒张功能障碍占比高于未发生组，撤机前6 h血清高迁移率蛋白B1（HMGB1）、C反应蛋白（CRP）、乳酸（Lac）/白蛋白（Alb）高于未发生组（P＜0.05）；入院时APACHEⅡ评分、糖尿病、机械通气治疗24 h后PaCO2、机械通气时间、吸烟史、合并MODS、入院时肺部超声评分及HMGB1、Lac/Alb、CRP为WIPE发生的独立危险因素（P＜0.05）；预测模型预测WIPE发生风险的AUC值为0.880，敏感度、特异度分别为86.30%、72.79%，Hosmer-Lemeshow检验显示该模型与观测值拟合度良好，DCA曲线显示风险阈值在0.05～0.91时该模型具有良好的临床净获益。结论 入院时APACHEⅡ评分、糖尿病、机械通气治疗24 h后PaCO2、机械通气时间、吸烟史、合并MODS、入院时肺部超声评分及HMGB1、Lac/Alb、CRP为AECOPD合并呼吸衰竭机械通气患者发生WIPE的独立危险因素，基于以上危险因素构建的预测模型预测效能良好，临床应制定针对性干预方案，以降低WIPE发生风险。

目的 分析布地格福吸入、无创正压通气（NIPPV）联合治疗慢性阻塞性肺疾病急性加重（AECOPD）合并呼吸衰竭的效果。方法 本研究采用回顾性对照研究。选取2024-06—2025-05我院96例AECOPD合并呼吸衰竭者，根据治疗方案不同分组，每组48例。对照组接受NIPPV治疗，研究组接布地格福吸入、NIPPV联合治疗，持续治疗1周。观察并对比两组疗效、病情程度、血气指标[动脉血二氧化碳分压（PaCO2）、动脉血氧分压（PaO2）]、肺功能[最大呼气压（MEP）、一秒率（FEV1/FVC）]、炎性因子指标[C反应蛋白（CRP）、白介素-6（IL-6）、肿瘤坏死因子-α（TNF-α）]、氧化应激指标[超氧化物歧化酶（SOD）、谷胱甘肽过氧化物酶（GSH-Px）、过氧化脂质（LPO）]及不良反应。结果 研究组治疗有效率为91.67%（44/48），高于对照组75.00%（36/48）（P＜0.05）；治疗1周后与对照组相比，研究组mMRC分值、CAT分值均较低（P＜0.05）；治疗1周后，与对照组相比，研究组MEP、FEV1/FVC、PaO2较高，PaCO2较低（P＜0.05）；治疗1周后与对照组相比，研究组CRP、TNF-α、IL-6较低（P＜0.05）；治疗1周后与对照组相比，研究组SOD、GSH-Px较高，LPO较低（P＜0.05）；两组不良反应无明显差异（P＞0.05）。结论 布地格福吸入、NIPPV联合治疗AECOPD合并呼吸衰竭，可明显减轻症状，改善血气指标与肺功能，抑制炎症反应，调节氧化应激，且保障安全性。

       目的  探讨多组分运动训练对老年慢性阻塞性肺疾病（COPD）稳定期病人骨骼肌功能的影响。方法  前瞻性选择2022年10月—2024年10月90例COPD稳定期患者，采用抽签法随机分为观察组与对照组，对照组45例采取常规运动干预，观察组45例在对照组基础上增加多组分运动训练。干预前、干预后3个月比较两组患者四肢骨骼肌含量，四肢肌群力量，运动耐力与肺功能，生活质量。结果 干预后，两组上肢、下肢骨骼肌含量均略增加，观察组高于对照组（P＜0.05）；干预后，两组膝伸肌、膝屈肌、肘伸肌、肘屈肌肌群力量均增加，观察组高于对照组（P＜0.05）；干预后，两组6 min步行试验、用力肺活量及第一秒用力呼气量均升高，观察组高于对照组（P＜0.05）；干预后，两组圣乔治呼吸问卷各维度分数及总分均降低，观察组低于对照组（P＜0.05）。结论  针对老年COPD稳定期患者采取多组分运动训练可提升患者四肢骨骼肌含量与四肢肌群力量，改善患者运动耐力与肺功能，减轻COPD及骨骼肌功能障碍对患者生活质量造成的负面影响。

        Objective  To explore the effect of multi-component exercise training on skeletal muscle function in elderly patients with stable chronic obstructive pulmonary disease（COPD）．Methods  From October 2022 to October 2024，90 stable COPD patients were prospectively selected and randomly divided into an observation group and a control group using a lottery method．The control group consisted of 45 patients who received routine exercise care，while the observation group  consisted of 45 patients who received multi-component exercise training in addition to the routine care．Skeletal muscle content，muscle group strength，exercise endurance，lung function，and quality of life between two groups of patients were compared before and three months after intervention．Results  After intervention，the skeletal muscle content of both upper and lower extremities slightly increased in both groups，with the observation group  being higher than the control group（P＜0.05）．After intervention，the strength of the knee extensor，knee flexor，elbow extensor，and elbow flexor muscle groups increased in both groups，with the observation group  had better results than the control group（P＜0.05）．After intervention，both groups showed an increase in six-minute walking test，forced vital capacity，and forced expiratory volume in first second，with the observation group  had better  results than the control group（P＜0.05）．After intervention，the scores of each dimension and total score of the SGRQ in both groups decreased，and the observation group had lower scores than the control group（P＜0.05）．Conclusions  Multi-component exercise training for stable elderly COPD patients can improve the skeletal muscle content and muscle strength of the extremities，enhance exercise endurance and lung function，and alleviate the negative impact of COPD and skeletal muscle dysfunction on patients’quality of life．

目的 探讨福莫特罗联合格隆溴铵对慢性阻塞性肺疾病急性加重期（AECOPD）患者的疗效。方法 选择2021年1月—2023年6月廉江市人民医院收治的97例AECOPD患者进行研究,在双方知情基础上,通过单双号抽签方式分组,抽取单号纳入对照组（n=48,予以福莫特罗治疗）,抽取双号纳入观察组（n=48,予以福莫特罗联合格隆溴铵治疗）,对比两组肺功能指标、血气指标、症状改善情况及出现的不良反应。结果 治疗后两组的肺功能指标均高于治疗前,而观察组各指标高于对照组（P<0.05）;治疗后两组PaO₂高于治疗前,PaCO₂低于治疗前,且观察组上述血气指标与对照组比较差异有统计学意义（P<0.05）;治疗后两组的CAT及SGRQ评分均低于治疗前,其中观察组评分低于对照组（P<0.05）;观察组（8.33%）与对照组（12.24%）不良反应率比较,差异不显著（P>0.05）。结论 采用福莫特罗联合格隆溴铵治疗AECOPD患者,有助于改善患者肺功能,使其血气指标得到改善,还可有效缓解其呼吸道症状,且安全性得到保障。

Objective To explore the curative effect of formoterol combined with glycopyrronium bromide on patients with acute exacerbation of chronic obstructive pulmonary disease（AECOPD）. Methods The research cut-off period was from January 2021 to June 2023．A total of 97 patients with AECOPD were selected from Lianjiang People's Hospital for research．On the basis of mutual knowledge,they were divided into groups by odd and even numbers．The odd numbers were drawn into the control group（n=48,treated with formoterol）and the odd numbers were drawn into the observation group（n=48,treated with formoterol+glycopyrronium bromide）,the pulmonary function index,blood gas index,symptom improvement and adverse reactions were compared between the two groups. Results After treatment,the lung function indexes of the two groups were higher than those before treatment,while the indexes of the observation group were higher than those of the control group（P<0.05）．PaO₂ was higher and PaCO₂ was lower in the two groups after treatment,and the blood gas indexes in the observation group were different from those in the control group（P<0.05）．The scores of COPD assessment test and St. George's Respiratory Questionaire in the two groups after treatment were lower than those before treatment,while the scores in the observation group were lower than those in the control group（P<0.05）;There was no significant difference between the observation group（8.33%）and the control group（12.24%）（P>0.05）. Conclusions The choice of formoterol and qualified ammonium bromide for AECOPD is helpful to improve the lung function,blood gas index and respiratory symptoms,And the security is guaranteed．

吞咽障碍是慢性阻塞性肺疾病（COPD）的常见并发症之一,并且是COPD急性加重的危险因素之一,对患者预后造成不良影响。对COPD患者吞咽障碍的发生及严重程度进行准确的评估,是进行科学管理的首要前提。本文对COPD吞咽障碍评估工具的基本特点、应用现状及发展现状进行综述,为临床医务人员选择评估工具提供借鉴。

Dysphagia is one of the common complications of chronic obstructive pulmonary disease（COPD）,and is one of the risk factors of acute exacerbation of COPD,which has adverse effects on the prognosis of patients．Accurate assessment of the occurrence and severity of dysphagia in COPD patients is the first step for scientific management．In this paper,the basic characteristics,application status and development status of assessment tools for COPD patients with dysphagia are reviewed,which can provide reference for the selection of assessment tools for clinical medical staff．

目的 探讨乙酰半胱氨酸泡腾片联合布地格福气雾剂治疗慢性阻塞性肺疾病疗效及对患者肺功能的影响。方法 以2020年4月—2022月4月在本院诊治的84例慢性阻塞性肺疾病患者作为研究对象,根据1∶1简单分配原则把患者分为联合组与对照组各42例。对照组行传统治疗,联合组在对照组治疗的基础上,再给予乙酰半胱氨酸泡腾片联合布地格福气雾剂治疗,联合组与对照组都治疗观察4周。检测患者的疗效、肺功能与血清超敏C反应蛋白（hs-CRP）与降钙素原（PCT）含量变化情况。结果 联合组治疗后的总有效率与对照组相比有提高（P<0.05）。治疗后,联合组与对照组的第一秒用力呼气容积占用力肺活量百分比（FEV₁/FVC）、第一秒用力呼气容积占预计值百分比（FEV₁%）更高（P<0.05）,且联合组与对照组对比有提高（P<0.05）。联合组治疗后的疾病影响、活动能力、症状部分等SGRQ生活质量评分与对照组相比降低（P<0.05）。联合组与对照组治疗后的血清 hs-CRP与 PCT含量低于治疗前（P<0.05）,联合组与对照组相比也降低（P<0.05）。结论 乙酰半胱氨酸泡腾片联合布地格福气雾剂治疗慢性阻塞性肺疾病能有效抑制hs-CRP、PCT的表达,能促进改善患者的肺功能,提高治疗效果与生活质量。

Objective To investigate the efficacy of acetylcysteine effervescent tablets combined with budigraf aerosol in the treatment of chronic obstructive pulmonary disease（COPD）and its effect on the pulmonary function of patients．Methods From April 2020 to April 2022,a total of 84 patients with COPD diagnosed and treated in our hospital were selected as the research objects,and the patients were divided into the combination group and the control group with 42 cases in each group,according to the 1∶1 simple allocation principle．The control group were given traditional treatment,and the combination group were given acetylcysteine effervescent tablets combined with budigraf aerosol additionally．Both the combined group and the control group were observed for 4 weeks．The efficacy of patients,lung function and serum hypersensitive C-reactive protein（hs-CRP）and procalcitonin（PCT）levels were detected．Results The total effective rates after treatment in the combination group were higher than the control group（P<0.05）．After treatment,The forced expiratory volume in 1 second/forced vital capacity（FEV₁/FVC）,FEV₁% value of the two groups were higher（P<0.05）,and the combination group had greater improvement（P<0.05）．The SGRQ quality of life scores,such as disease impact,activity ability,and symptom in the combination group were lower（P<0.05）．After treatment,the serum high-sensitivity C-reactive protein（hs-CRP）and procalcitonin（PCT）levels in the two groups were significantly lower（P<0.05）,and the combined group decreased more（P<0.05）．Conclusions Acetylcysteine effervescent tablets combined with budigraf aerosol in the treatment of COPD can effectively inhibit the expression of hs-CRP,PCT,promote the improvement of lung function,improve the treatment effect and quality of life．

目的 探讨基于中药熏蒸配合穴位按摩的健康管理对稳定期肺肾气虚型慢阻肺的疗效。方法 选取2020年1月—2021年1月在我院接受治疗的稳定期肺肾气虚型慢阻肺患者120例为研究对象,随机分为对照组和干预组。对照组采用西医常规干预,干预组在此基础上实施为期1年的中药熏蒸配合穴位按摩的健康管理,比较干预前后2组患者肺功能、血氧指标以及生活质量的差异。结果 干预前,2组患者第1秒用力肺活量（FEV₁）、第1秒用力肺活量占预计值百分比（FEV₁%）、用力肺活量（FVC）、第1秒用力肺活量占用力肺活量的比值（FEV₁/FVC%）等指标比较差异无统计学意义（P>0.05）,干预后,2组患者的FEV₁、FEV₁%、FVC、FEV₁/FVC%明显上升,且干预组患者优于对照组（P<0.05）;实施相关干预前,干预组和对照组患者的血氧指标比较差异无统计学意义（P>0.05）,干预后,2组患者的PaO₂、和SpO₂上升,PaCO₂下降,且干预组的变化幅度大于对照组（P<0.05）;干预前2组患者在圣乔治问卷（SGRQ）生活质量评分比较差异无统计学意义（P>0.05）,干预后2组患者的SGRQ生活质量评分降低,且干预组患者的SGRQ生活质量指标评分更低（P<0.05）。结论 中药熏蒸配合穴位按摩应用于稳定期肺肾气虚型慢阻肺患者中,能够提高患者的肺功能,改善血氧指标,提高患者的生活质量。

Objective To explore the effect of health management based on traditional Chinese medicine fumigation combined with acupoint massage on stable chronic obstructive pulmonary disease（COPD）with lung-kidney deficiency．Methods A total of 120 patients with stable COPD and lung-kidney deficiency who received treatment in our hospital from January 2020 to January 2021 were selected as the study objects and randomly divided into control group and intervention group．The control group received conventional Western medicine intervention,and the intervention group received 1-year traditional Chinese medicine fumigation combined with acupoint massage on the basis of Western management．The differences of lung function,blood oxygen index and quality of life between the two groups were compared before and after intervention．Results Before intervention,there were no significant differences in forced expiratory volume in one second（FEV₁）,the first second forced vital capacity percentage of expected value（FEV₁%）,forced vital capacity（FVC）,the ratio of the first second forced vital capacity of forced vital capacity（FEV₁/FVC%）between the two groups（P>0.05）,but after intervention,the FEV₁,FEV₁%,FVC,FEV₁/FVC% of the two groups increased significantly,and those in the intervention group were better（P<0.05）．Before the implementation of relevant intervention,there was no difference in blood oxygen index between the two groups（P>0.05）．After the intervention,PaO₂ and SpO₂ of the two groups were significantly increased,while PaCO₂ was significantly decreased,and the change in the intervention group was significantly greater（P<0.05）．Before intervention,there were no significant differences in the quality of life scores of St George’s Respiratory Questionnaire（SGRQ）between the two groups（P>0.05）．After intervention,the scores of SGRQ of the two groups were significantly decreased,and the scores of the intervention group were significantly lower（P<0.05）．Conclusions Traditional Chinese medicine fumigation combined with acupoint massage can significantly improve lung function,blood oxygen index and life quality of stable COPD patients with lung-kidney deficiency．

目的 观察经鼻高流量氧疗治疗慢性阻塞性肺疾病急性加重期（AECOPD）伴Ⅱ型呼吸衰竭对患者肺功能、血气分析指标的影响。方法 收集2020年3月—2022年3月我院收治的AECOPD伴Ⅱ型呼吸衰竭患者92例,随机分为常规通气组（46例,无创正压通气）、经鼻氧疗组（46例,经鼻高流量氧疗）,测量记录治疗前及治疗后2组患者心率及呼吸频率、血气分析指标、肺功能指标,评估患者舒适度及呼吸困难情况,记录治疗期间并发症。结果 治疗后经鼻氧疗组心率、呼吸频率低于常规通气组（P<0.05）;治疗后经鼻氧疗组二氧化碳分压（PaCO₂）低于常规通气组,动脉血氧分压（PaO₂）高于常规通气组（P<0.05）;治疗后经鼻氧疗组第1秒用力呼出气容积（FEV₁）、用力呼气容积（FVC）高于常规通气组（P<0.05）;治疗后经鼻氧疗组Borg评分低于常规通气组,舒适率高于常规通气组（P<0.05）;经鼻氧疗组并发症发生率低于常规通气组（P<0.05）。结论 给予AECOPD伴Ⅱ型呼吸衰竭患者经鼻高流量氧疗可改善患者肺功能、血气分析指标,促进呼吸困难症状缓解,且可提高患者舒适度,降低并发症发生率。

Objective To observe the effect of nasal high-flow oxygen therapy on pulmonary function and blood gas analysis indexes in patients with acute exacerbation of chronic obstructive pulmonary disease（AECOPD）with type Ⅱ respiratory failure．Methods From March 2020 to March 2022,92 patients with AECOPD complicated with type Ⅱ respiratory failure who were treated in our hospital were enrolled and randomly divided into conventional ventilation group（46 cases,non-invasive positive pressure ventilation）and nasal oxygen therapy group（46 cases,nasal high-flow oxygen therapy）．The heart rate and respiratory rate,blood gas analysis indexes,pulmonary function indexes of the two groups of patients before and after treatment were measured and recorded,the comfort level and dyspnea situation of the patients were evaluated,and the complications during the treatment were recorded．Results After treatment,the heart rate and respiratory rate in the nasal oxygen therapy group were significantly lower than those in the conventional ventilation group（P<0.05）．The partial pressure of carbon dioxide（PaCO₂）in the nasal oxygen therapy group was significantly lower than that in the conventional ventilation group,partial pressure of oxygen（PaO₂）was significantly higher than the conventional ventilation group（P<0.05）．The nasal oxygen therapy group forced expiratory volume in one second,（FEV₁）,forced vital capacity（FVC）were significantly higher than the conventional ventilation group（P<0.05）．The Borg score of nasal oxygen therapy group was significantly lower than the conventional ventilation group,the comfort level was significantly higher than the conventional ventilation group（P<0.05）．The incidence of complications in the nasal oxygen therapy group was significantly lower than that in the conventional ventilation group（P<0.05）．Conclusions Nasal high-flow oxygen therapy for AECOPD patients with type Ⅱ respiratory failure can significantly improve the pulmonary function and blood gas analysis indicators,promote the relief of dyspnea symptoms,improve the comfort level of patients,and reduce the incidence of complications．

目的 探讨负性调节细胞CD4⁺CD25⁺T及其相关细胞因子在慢性阻塞性肺病(COPD)患者外周血中的表达与合并细菌感染的相关性。方法 纳入2018年1月—2019年12月间收治的66例COPD患者作为研究对象,其中急性加重期COPD患者(AECOPD)36例、稳定期患者30例,并纳入同期体检健康者30例作为对照组。对所有纳入的研究对象外周血标本中的CD4⁺CD25⁺T调节性T细胞及其相关细胞因子[白介素-4(IL-4)、白介素-10(IL-10)、干扰素-γ(IFN-γ)]表达水平进行检测,分析相关指标水平与COPD是否合并细菌感染的关系,及预测细菌感染的效能。结果 AECOPD和稳定期COPD患者CD4⁺、CD4⁺CD25⁺、IFN-γ/IL-4水平均低于对照组(P<0.05),IL-4、IL-10水均高于对照组(P<0.05);AECOPD患者IFN-γ水平高于对照组(P<0.05);AECOPD患者CD4⁺、CD4⁺CD25⁺水平低于稳定期COPD患者(P<0.05),IL-4、IL-10、IFN-γ均高于稳定期COPD患者(P<0.05);CD4⁺、CD4⁺CD25⁺水平与IL4、IFN-γ均呈负相关关系(P<0.05),CD4⁺水平与IL-10呈负相关关系(P<0.05);COPD合并感染者CD4⁺水平低于未合并感染者(P<0.05),IL-4、IFN-γ水平均高于未合并感染者(P<0.05);COPD合并革兰氏阴性菌感染者CD4⁺CD25⁺水平低于未合并感染者(P<0.05),IL-10水平均高于未合并感染者(P<0.05);CD4⁺、IL-4、IL-10、IFN-γ均是预测COPD患者合并细菌感染的有效指标(P<0.05),其中IL-4和IFN-γ效能较高。结论 CD4⁺、CD4⁺CD25⁺Treg细胞及其相关细胞因子参与COPD发生发展和患者细菌感染,监测其水平变化有利于为临床诊治提供信息。

Objective To investigate the correlation between the expressions of negative regulatory cell CD4⁺CD25⁺T and its related cytokines in peripheral blood and bacterial infection of patients with chronic obstructive pulmonary disease (COPD). Methods Sixty-six COPD patients admitted between January 2018 and December 2019 were included as the research subjects, including 36 patients with acute exacerbation of COPD (AECOPD) and 30 patients with stable COPD. Another 30 healthy people undergoing physical examination during the same period were included in control group. The expression levels of CD4⁺CD25⁺ regulatory T cell and its related cytokines [interleukin-4 (IL-4), interleukin-10 (IL-10), interferon-γ (IFN-γ)] in the peripheral blood samples were detected among the included subjects. The relationship between levels of related indicators and presence or absence of bacterial infection in COPD and the efficacy of predicting infection were analyzed. Results The levels of CD4⁺, CD4⁺CD25⁺ and IFN-γ/IL-4 in patients with AECOPD and patients with stable COPD were lower than those in control group (P<0.05), while the levels of IL-4 and IL-10 were higher than those in control group (P<0.05). The IFN-γ level of AECOPD patients was higher than that of control group (P<0.05). The levels of CD4⁺ and CD4⁺CD25⁺of AECOPD patients were lower than those of stable COPD patients (P<0.05), while the levels of IL-4, IL-10 and IFN-γ were all higher than those of stable COPD patients (P<0.05). The levels of CD4⁺ and CD4⁺CD25⁺were negatively correlated with IL-4 and IFN-γ (P<0.05), and the CD4⁺level was negatively correlated with IL-10 (P<0.05). The CD4⁺ level in COPD patients with infection was lower than that in patients without infection (P<0.05), while the levels of IL-4 and IFN-γ were higher than those in patients without infection (P<0.05). The CD4⁺CD25⁺level of COPD patients with Gram-negative bacteria infection was lower than that of patients without infection (P<0.05), while the IL-10 level was higher than that of patients without infection (P<0.05). CD4⁺, IL-4, IL-10 and IFN-γ were effective indicators in predicting bacterial infection in COPD patients (P<0.05), and IL-4 and IFN-γ had higher efficacy. Conclusions CD4⁺, CD4⁺CD25⁺ T cell and related cytokines are involved in the occurrence and development of COPD and bacterial infection in patients. Monitoring changes of those levels is helpful to provide information for clinical diagnosis and treatment.