Molecular mechanisms and cellular process in signal transduction pathway related to air pollutants in obstructive lung diseases:A mini-review

Exposure to air pollutants such as PM_(10),PM_(2.5),PM_(0.1),O_(3),CO,NO2,and SO_(2),and biological pollutants are important factors causing the evolution and furtherance of obstructive lung diseases(OLD),including asthma and chronic obstructive pulmonary disease(COPD).Asthma is the most frequent chronic inflammatory airway disease,characterized by breathlessness,wheezing,chest tightness,and cough,together with the presence of exaggerated expiratory airflow fluctuation that varies over time.COPD is a heterogeneous lung condition characterized by chronic respiratory symptoms such as dyspnea,cough,expectoration,and/or exacerbations due to abnormalities of the airways and/or alveoli that cause persistent,often progressive,airflow obstruction.Understanding the molecular mechanisms and cellular processes based on the development of OLD on exposure to air pollutants will provide insights into the solution of pathogenesis,prevention,and treatment of these conditions.The molecular mechanisms and cellular process involved in signal transduction pathway plays a role in the binding of extracellular signaling molecules and ligands to receptors placed on the cell surface or on the inner side cell that trigger inflammation that occurs,especially when something important enters the cell to bring into a cascade response.This binding then alters the cell metabolism,shape,and gene expression in the airway.This review aimed to reveal the effect of air pollutants on the molecular mechanisms and cellular processes involved in the signal transduction pathways in OLD.

Protective effect of sevoflurane on lung function of elderly chronic obstructive pulmonary disease patients undergoing total hip arthroplasty

BACKGROUND Chronic obstructive pulmonary disease(COPD)is a common respiratory disorder that affects the elderly population and increases the risk of postoperative pulmonary complications(PPCs)after major surgeries.Sevoflurane is a volatile anesthetic that has been shown to have anti-inflammatory and antioxidant properties and attenuate lung injury in animal models.AIM To evaluate the protective effect of sevoflurane on the lung function of elderly COPD patients undergoing total hip arthroplasty(THA).METHODS In this randomized controlled trial,we randomly assigned 120 elderly patients with COPD,who were scheduled for THA,to receive either sevoflurane(sevoflurane group)or propofol(propofol group)as the maintenance anesthetic.The primary outcome was the incidence of PPCs within seven days after surgery.The secondary outcomes were changes in the lung function parameters,inflammatory markers,oxidative stress markers,and postoperative pain scores.RESULTS The results showed that the incidence of PPCs was significantly lower in the sevoflurane group than in the propofol group(10%vs 25%,P=0.02).Furthermore,the decline in the forced expiratory volume in 1 s,forced vital capacity,and peak expiratory flow was significantly lesser in the sevoflurane group than in the propofol group at 24 h and 48 h after surgery(P<0.05).The interleukin-6,tumor necrosis factor-alpha,malondialdehyde,and 8-hydroxy-2α-deoxyguanosine levels were significantly lower in the sevoflurane group than in the propofol group at 24 h after surgery(P<0.05).The sevoflurane group showed significantly lower postoperative pain scores than the propofol group at 6 h,12 h,and 24 h after surgery(P<0.05).CONCLUSION Sevoflurane protects the lung function of elderly COPD patients undergoing THA under general anesthesia by reducing the incidence of PPCs,attenuating inflammatory and oxidative stress responses,and alleviating postoperative pain.

A multicenter randomized, double-blind, placebo-controlled trial to evaluate the safety and efficacy of rhubarb in treating acute exacerbation of chronic obstructive pulmonary disease of the syndrome type phlegm-heat obstructing the lungs

Objective:To observe the clinical efficacy and safety of oral administration of the traditional Chinese herb rhubarb to treat acute exacerbation of chronic obstructive pulmonary disease(AECOPD).Method:This was a multicenter randomized double-blinded placebo controlled study that took place in 7 provinces of China that enrolled 244 patients(aged 18e80 years)who had acute exacerbation of COPD with the traditional Chinese syndrome pattern of phlegm-heat obstructing lung.Participants were divided into experimental and control groups.The experimental group received 4.5 g of rhubarb granules twice daily and the control group received placebo granules.Both groups also received conventional Western therapy consisting of oxygen therapy,an antibiotic,expectorant,and a bronchodilator.Treatment lasted 10 days.Symptom scores for cough,sputum volume and color,wheezing and chest tightness before treatment and on days 3,5,7,and 10 during the treatment were recorded.Lung function,arterial blood gas and levels of serum inflammatory factors,interleukin-4(IL-4),interleukin-8(IL-8),and interleukin-10(IL-10)and tumor necrosis factor-alpha(TNF-a),before and after treatment were measured.Results:The sample size of the full analysis set(FAS)was 244 participants,and the sample size of per protocol set(PPS)was 235.Following 10 days’treatment,symptom scores of the experimental group were markedly lower than those of the placebo group(FAS:mean difference
1.67,95%CI:e2.66 to
0.69,P Z 0.001;PPS:mean difference
1.55,95%CI:
2.56 to
0.54,P Z 0.003).Lung function in the experimental group was significantly higher than in the placebo group(FEV1,FAS:mean difference 0.12,95%CI:0.06 to 0.18;P<0.001;PPS:mean difference 0.12,95%CI 0.05 to 0.18;P<0.001.FVC:FAS:mean difference 0.16,95%CI:0.06 to 0.26;P Z 0.002;PPS:mean difference 0.16,95%CI 0.05 to 0.26;P Z 0.003.FEV1%,FAS:mean difference 5.95,95%CI:3.36 to 8.53;P<0.001;PPS:mean difference 5.92,95%CI 3.28 to 8.56;P<0.001.).PaO2,PaCO2,as well as serum inflammatory factors were also improved when compared to the placebo group.There were no significant differences in the incidence rate of adverse reaction between the two groups.Conclusions:Compared with placebo,rhubarb granules significantly reduced symptom scores,improved blood oxygen level,controlled systemic inflammatory response,without significant adverse effects.Thus,rhubarb may be a beneficial adjuvant method for treating the phlegm-heat obstructing the lung syndrome pattern of AECOPD.

Effects of acetylcysteine on micro-inflammation and pulmonary ventilation in chronic obstructive pulmonary disease exacerbation

BACKGROUND Acute exacerbation of chronic obstructive pulmonary disease(AECOPD)is a serious complication of chronic obstructive pulmonary disease,often characterized by increased morbidity and mortality.In traditional Chinese medicine,AECOPD is linked to phlegm-heat and blood-stasis,presenting symptoms like thick sputum,fever,and chest pain.It has been shown that acetylcysteine inhalation in conjunction with conventional therapy significantly reduced inflammatory markers and improved lung function parameters in patients with AECOPD,suggesting that acetylcysteine may be an important adjunctive therapy for patients with phlegm-heat-blood stasis type AECOPD.AIM To investigate the effect of acetylcysteine on microinflammation and lung ventilation in patients with phlegm-heat and blood-stasis-type AECOPD.METHODS One hundred patients with phlegm-heat and blood-stasis-type AECOPD were randomly assigned to two groups.The treatment group received acetylcysteine inhalation(10%solution,5 mL,twice daily)along with conventional therapy,whereas the control group received only conventional therapy.The treatment duration was 14 d.Inflammatory markers(C-reactive protein,interleukin-6,and tumor necrosis factor-alpha)in the serum and sputum as well as lung function parameters(forced expiratory volume in one second,forced vital capacity,and peak expiratory flow)were assessed pre-and post-treatment.Acetylcysteine inhalation led to significant reductions in inflammatory markers and improvements in lung function parameters compared to those in the control group(P<0.05).This suggests that acetylcysteine could serve as an effective adjunct therapy for patients with phlegm-heat and blood-stasis-type AECOPD.RESULTS Acetylcysteine inhalation significantly reduced inflammatory markers in the serum and sputum and improved lung ventilation function parameters in patients with phlegm-heat and blood-stasis type AECOPD compared with the control group.These differences were statistically significant(P<0.05).The study concluded that acetylcysteine inhalation had a positive effect on microinflammation and lung ventilation function in patients with this type of AECOPD,suggesting its potential as an adjuvant therapy for such cases.CONCLUSION Acetylcysteine inhalation demonstrated significant improvements in reducing inflammatory markers in the serum and sputum,as well as enhancing lung ventilation function parameters in patients with phlegm-heat and bloodstasis type AECOPD.These findings suggest that acetylcysteine could serve as a valuable adjuvant therapy for individuals with this specific type of AECOPD,offering benefits for managing microinflammation and optimizing lung function.

Chronic obstructive pulmonary disease as a risk factor for lung cancer

The association between chronic obstructive pulmonary disease(COPD) and lung cancer has long been a subject of intense debate. The high prevalence of COPD in elderly smokers inevitably strengthens their coincidence. In addition to this contingent coincidence, recent studies have revealed a close association between the two diseases that is independent of the smoking history; that is, the existence of COPD is an independent risk factor for the development of lung cancer. Molecular-based evidence has been accumulating as a result of the efforts to explain the underlying mechanisms of this association. These mechanisms may include the following: the retention of airborne carcinogens followed by the activation of oncogenes and the suppression of tumor suppressor genes; the complex molecular mechanism associated with chronic inflammation in the distal airways of patients with COPD; the possible in-volvement of putative distal airway stem cells; and gel netic factors that are common to both COPD and lung cancer. The existence of COPD in patients with lung l cancer may potentially affect the process of diagnosis, surgical resection, radiotherapy, chemotherapy, and end-of-life care. The comprehensive management of COPD is extremely important for the appropriate treatment of lung cancer. Surgical resections with the aid of early interventions for COPD are often possible, even for patients with mild-to-moderate COPD. New challenges, such as lung cancer CT screening for individuals t at high risk, are now in the process of being implemented. Evaluating the risk of lung cancer in patients with COPD may be warranted in community-based lung cancer screening.

Effect of Dachengqi Decoction on NF-κB p65 Expression in Lung of Rats with Partial Intestinal Obstruction and the Underlying Mechanism

To investigate the effect of Dachengqi decoction on NF-κB p65 expression in lung of rats with partial intestinal obstruction and the underlying mechanism, 30 SD rats were randomly divided into three groups： sham-operation group, model group and Dachengqi decoction treatment group （Dachengqi group）, with 10 animals in each group. The models were made by partially ligating their large intestines outside the body. The pathological changes were analyzed by HE staining. The expression of NF-κB p65 in rats lung were measured by using real-time polymerase chain reaction and immunohistochemistry respectively. Moreover, the expression of caveolin-1 in rats lung was also measured to. Increased edema, interstitial thickening, hemorrhage, and infiltration of inflammatory cells were found in the model group. In contrast, this change was significantly reduced in Dachengqi group as compared with model group. In addition, the up-regulated caveolin-1 and NF-κB p65 were also suppressed by Dachengqi decoction in lung of rats with partial intestinal obstruction. We are led to concluded that the caveolin-l-NF-κB pathway plays an important role in the development of lung injury of rats with partial intestinal obstruction and Dachengqi decoction could down-regulate the expression of caveolin-1 and NF-κB p65 in lung of rats with partial intestinal obstruction.

Role of chronic obstructive pulmonary disease in lung cancer pathogenesis

Chronic obstructive pulmonary disease(COPD) and lung cancer are two important smoking related conditions. However, COPD has been shown to be an independent risk factor for lung cancer regardless of smoking history, suggesting that COPD and lung cancer may share a common pathogenesis. This review summarizes the epidemiology of lung cancer and COPD briefly, as well as discussing the potential for shared genetic risk, and shared genomic mechanisms, such as epigenetic changes or DNA damage induced by smoking. How key areas of COPD pathogenesis, such as inflammation, oxidative stress and protease imbalance may contribute to subsequent development of cancer will also be covered. Finally the possibility that consequences of COPD, such as hypoxia, influence carcinogenesis will be reviewed. By understanding the pathogenesis of COPDand lung cancer in detail it is possible that new treatments may be developed and the risk of lung cancer in COPD may be reduced.

Non-Invasive Early Diagnosis of Obstructive Lung Diseases Leveraging Machine Learning Algorithms

Lungs are a vital human body organ,and different Obstructive Lung Diseases(OLD)such as asthma,bronchitis,or lung cancer are caused by shortcomings within the lungs.Therefore,early diagnosis of OLD is crucial for such patients suffering from OLD since,after early diagnosis,breathing exercises and medical precautions can effectively improve their health state.A secure non-invasive early diagnosis of OLD is a primordial need,and in this context,digital image processing supported by Artificial Intelligence(AI)techniques is reliable and widely used in the medical field,especially for improving early disease diagnosis.Hence,this article presents an AIbased non-invasive and secured diagnosis for OLD using physiological and iris features.This research work implements different machine-learning-based techniques which classify various subjects,which are healthy and effective patients.The iris features include gray-level run-length matrix-based features,gray-level co-occurrence matrix,and statistical features.These features are extracted from iris images.Additionally,ten different classifiers and voting techniques,including hard and soft voting,are implemented and tested,and their performances are evaluated using several parameters,which are precision,accuracy,specificity,F-score,and sensitivity.Based on the statistical analysis,it is concluded that the proposed approach offers promising techniques for the non-invasive early diagnosis of OLD with an accuracy of 97.6%.

Meta-analysis of the treatment of chronic obstructive pulmonary disease by tonifying lung and kidney

Objective:To A randomized controlled trial(RCTS)of lung tonifying and kidney tonifying in the treatment of chronic obstructive pulmonary disease(copd)by meta-analysis.Methods:Computer retrieval of databases such as CNKI、VIP、WanFang、Cochrane Library、EMbase、PubMed.The retrieval time was from the database construction to March 2020,and two evaluators were selected to screen the documents according to the na sorting standards,extract the data with Excel 2010 software,and perform Meta analysis with Rev Man5.3 software.Results:21 RCTS were included.Meta-analysis results show that compared with the conventional treatment,the method of supplementing lung and tonifying kidney can obviously improve lung function(MD=1.69,95%CI[1.36,2.01],P<0.00001)、reduce TCM syndrome score(MD=39.83,95%CI[18.10,61.56],P=0.0003)、improve life quality(MD=-5.90,95%CI[-8.95,-2.85],P=0.0001)、regulates serum immunoglobulin(MD=0.37,95%CI[0.31,0.44],P<0.00001)、improve 6MWD(MD=39.83,95%CI[18.10,61.56],P=0.0003)、improve CAT(MD=-1.68,95%CI[-2.05,-1.30],P<0.00001).The differences were statistically significant.For improved T lymphocyte subsets(MD=0.96,95%CI[-0.10,2.03],P=0.08)not statistically significant.Conclusion:Lung-tonifying kidney-tonifying method had better efficacy in improving lung function,reducing TCM syndrome score,improving quality of life,improving immunoglobulin,improving 6WMD,improving CAT,but the efficacy in improving t-lymphocyte subgroup was similar to that in the control group.Due to the limited quantity and quality of samples included in this paper,more multicenter randomized controlled trials with rigorous design of large samples should be carried out for verification.

Efficacy Evaluation of Self-created"Lung Health Breathing Exercise"in Adjuvant Therapy for Patients with Stable Chronic Obstructive Pulmonary Disease

[Objectives]To evaluate the intervention effect and safety of self-created Lung Health Breathing Exercise on TCM syndromes,6-min walk test(6MWT)and quality of life in patients with stable chronic obstructive pulmonary disease(COPD).[Methods]76 cases of outpatient or inpatient patients who were diagnosed with stable COPD in Nanchong Traditional Chinese Medicine Hospital from January 2020 to March 2021 were selected,randomly divided into experimental group and control group,38 cases in each group.Both groups were given conventional western medicine treatment and nursing measures.The experimental group was added with the self-created Lung Health Breathing Exercise.After 12 weeks of treatment,the TCM syndrome score,6MWT distance,quality of life score and the incidence of adverse events were observed in the both groups.[Results]After treatment,the 6MWT distance and quality of life scores in both groups were significantly improved(P<0.01),and the TCM syndrome scores were significantly lower than those before treatment(P<0.01).[Conclusions]Lung Health Breathing Exercise can benefit patients in terms of symptom improvement,quality of life and exercise ability,and is a safe and effective rehabilitation measure for patients with stable COPD.

The Efficacy Analysis of Transbronchoscopic Large Volume Lung Lavage in Treatment of Pneumoconiosis Complicated with Chronic Obstructive Pulmonary Disease

Objective:To evaluate the efficacy of transbronchoscopic large volume lung lavage in the treatment of pneumoconiosis complicated with chronic obstructive pulmonary disease(COPD).Methods:The clinical data of 80 patients with pneumoconiosis complicated with COPD admitted to our hospital from June 2017 to January 2019 were retrospectively analyzed.40 patients in the control group were treated with conventional drugs and 40 patients in the observation group treated with conventional drugs plus transbronchoscopic large-volume lung lavage.Dyspnea score and healthy quality of life were compared between the two groups.Results:the scores of dyspnea in the observation group were significantly lower than those in the control group at 12,24 and 48 weeks after treatment,and the(SGRQ)scores of George’s respiratory problems questionnaire in the observation group were significantly lower than those in the control group at 12,24 and 48 weeks after treatment.Conclusion:Thetransbronchoscopic large volume of lung lavage has a significant effect on the treatment of pneumoconiosis patients with COPD,which can effectively reduce the degree of dyspnea and improve the quality of life.

Successful resection of colonic metastasis of lung cancer after colonic stent placement:A case report and review of the literature

BACKGROUND Lung cancer is the leading cause of cancer deaths worldwide.Although lung cancer can metastasize to various organs such as the liver,lymph nodes,adrenal gland,bone,and brain,metastases to the digestive organs,especially the colon,are rare.CASE SUMMARY An 83-year-old man diagnosed with lung cancer received radiation and chemoimmunotherapy,resulting in a complete clinical response.One year after the initial lung cancer diagnosis,the patient presented with obstructive ileus caused by a tumor in the descending colon.An elective left hemicolectomy was successfully performed after the endoscopic placement of a self-expandable metallic stent(SEMS).Pathologically,the tumor of the descending colon was diagnosed as lung cancer metastasis.The postoperative course was uneventful,and the patient is in good condition 13 mo after surgery,with no signs of recurrence.The previous 23 cases of surgical resection of colonic metastasis from lung cancer were reviewed using PubMed to characterize their clinicopathological features and outcomes.CONCLUSION SEMS is useful for obstructive colonic metastasis as a bridge to surgery to avoid emergency operations.

Summary of the Best Evidence for Preoperative Pre-Rehabilitation in Patients with Lung Cancer Complicated with COPD

Objective: To search, evaluate and integrate the best domestic and foreign evidence on the preoperative pre-rehabilitation of lung cancer patients with COPD, and summarize the best evidence. Methods: Cochrane Library, BMJ Best Practice, JBI Center for International Cooperation in Evidence-Based Health Care Library, and Up to were searched by computer system Date, Embase, CINAHL, PubMed, Evidence-Based Health Care Center Database (JBI), American Guidenet, Global Guidenet, CNKI, CMBM, Wanfang, and VIP databases on preoperative pre-rehabilitation of patients with lung cancer and COPD. Literature screening and quality evaluation were conducted independently by two researchers, and evidence was extracted, summarized and summarized according to the theme. Results: A total of 13 kinds of literature were included, including 4 guidelines, 4 systematic reviews, 3 evidence summaries, and 2 expert consensus articles. This paper summarizes 44 best evidence on pre-rehabilitation of lung cancer patients with COPD, including 8 aspects: pre-rehabilitation content and principle, pre-rehabilitation assessment, exercise rehabilitation, nutrition management, psychological guidance, health education, multidisciplinary cooperation, quality control and follow-up. Conclusion: The best evidence of preoperative pre-rehabilitation for patients with lung cancer complicated with COPD is rich in content, and needs to be selected according to the characteristics of the hospital and the clinical environment. Some of the evidence still needs to be confirmed by higher-quality studies. .

Effects of Combined Inhalation of Budesonide,Formoterol,and Tiotropium Bromide on Arterial Blood Gas and Pulmonary Function Indexes in Patients with Chronic Obstructive Pulmonary Disease

Objective:To analyze the effect of combined inhalation of budesonide formoterol and tiotropium bromide on arterial blood gas and pulmonary function indexes in patients with chronic obstructive pulmonary disease(COPD).Methods:100 patients with COPD treated from January to December 2022 were selected as observation objects,and were divided into a control group(n=50,in which budesonide and formoterol were administered)and an experimental group(n=50,the treatment drug was budesonide formoterol combined with tiotropium bromide)according to the computer grouping method,and compared the treatment results.Results:(i)Before treatment,there was no difference in the partial pressure of carbon dioxide and partial pressure of oxygen between the control group and the experimental group(P>0.05);after treatment,the partial pressure of carbon dioxide and partial pressure of oxygen in the experimental group were higher than those in the control group,with significant differences(P<0.05).(ii)Before treatment,there was no difference in forced vital capacity(FVC),forced expiratory volume in one second(FEV1),FEV1/FVC between the control group and the experimental group(P>0.05);after treatment,the FVC,FEV1,and FEV1/FVC in the experimental group were significantly higher than those in the control group(P<0.05).(iii)There was no difference in the levels of CRP,IL-6,and TNF-αbetween the control group and the experimental group(P>0.05);after treatment,the levels of CRP,IL-6,and TNF-αin the experimental group were lower than those in the control group,with significant differences(P<0.05).(iv)Compared to the total incidence of adverse reactions in the control group(28.00%),the incidence of total adverse reactions in the experimental group was lower at 10.00%,and the difference was significant(P<0.05).Conclusion:The combined inhalation of budesonide and formoterol with tiotropium bromide has demonstrated a clear therapeutic efficacy and safety in treating chronic obstructive pulmonary disease.This treatment approach effectively enhances arterial blood gas levels and lung function,showing promising potential for widespread application.

黏蛋白1与呼吸系统疾病关系的研究进展

慢性黏液高分泌导致的气道炎症可能会逐渐进展并影响患者的肺功能。黏液蛋白是黏液层的关键成分,其中黏蛋白1是一种重要的膜结合型黏蛋白,目前的研究聚焦于评估黏蛋白1在肺纤维化、肺癌和间质性肺疾病等肺部疾病中的临床应用,尤其是作为诊断、预测进展和评估治疗效果的生物标志物。因此,深入了解黏蛋白1在肺部疾病中的生物学机制和作用方式,特别是与疾病发展和进展的关联,探索黏蛋白1在肺部疾病早期诊断和预后评估中的预测价值,将为肺部疾病的诊断和治疗提供新的理论依据。

苏葶止喘汤联合西医治疗小儿支气管哮喘急性发作期(痰热阻肺证)38例

目的探讨苏葶止喘汤联合西医治疗小儿支气管哮喘急性发作期(痰热阻肺证)临床疗效。方法收集2020年2月至2022年3月河北省沧州中西医结合医院就诊的急性发作期的支气管哮喘病儿78例,根据随机数字表法分为对照组与治疗组各39例,对照组病儿给予硫酸沙丁胺醇、异丙托溴铵、布地奈德雾化吸入等西医治疗,治疗组在对照组基础上给予苏葶止喘汤治疗,观察两组治疗前后的临床疗效,症状缓解时间(咳痰消失时间、哮鸣音消失时间、咳嗽消失时间、喘息消失时间),肺功能指标[用力肺活量(FVC)、第1秒用力呼吸容积(FEV_(1))、第1秒用力呼气量占所有呼气量的比例(FEV_(1)/FVC)、最大呼气流量(PEF)、呼气中断流速(PEF25%)、呼吸中期瞬间流速(PEF50%)、呼吸后期瞬间流速(PEF75%)],血清炎症因子指标[C反应蛋白(CRP)、白细胞介素-22(IL-22)、白细胞介素-4(IL-4)],Toll样受体2(TLR2)、Toll样受体4(TLR4)表达水平。结果治疗后治疗组总有效率94.74%显著高于对照组71.05%(P<0.05);治疗组症状缓解时间快于对照组(P<0.05);治疗后两组FVC、FEV_(1)、FEV_(1)/FVC、PEF、PEF25%、PEF50%、PEF75%值均较治疗前升高且治疗组高于对照组(P<0.05);治疗后两组血清CRP、IL-22、IL-4、TLR2、TLR4水平均较治疗前降低,且治疗组CRP[(10.23±3.26)mg/L比(15.25±5.37)mg/L]、IL-22[(37.13±9.84)ng/L比(45.46±11.08)ng/L]、IL-4[(48.15±12.28)ng/L比(56.07±14.36)ng/L]、TLR2[(16.78±1.91)ng/L比(21.15±2.08)ng/L]、TLR4[(18.05±2.53)ng/L比(22.44±3.27)ng/L]低于对照组(P<0.05)。结论苏葶止喘汤联合西医治疗小儿支气管哮喘急性发作期临床疗效显著。

阻塞性睡眠呼吸暂停对间质性肺疾病患者的预后分析

目的:通过分析阻塞性睡眠呼吸暂停(obstructive sleep apnea,OSA)合并间质性肺疾病(interstitial lung diseases,ILD)患者的临床资料,揭示OSA与ILD患者病情严重程度的关联,评估睡眠参数对ILD患者预后的影响。方法:回顾性收集2011年2月至2021年2月,于北京安贞医院呼吸与危重症医学科完成睡眠监测的ILD患者,定义呼吸暂停低通气指数≥15次/h为OSA。所有患者均完成超声心动图,以三尖瓣反流峰值流速>3.4m/s或2.9~3.4m/s伴右心室增大伴室壁增厚,且主肺动脉直径>25mm、右心室/左心室横径>1作为判断肺动脉高压(hypertension,PH)的标准。通过阅读病历和电话回访的方式确定患者预后状况。结果:全部61例ILD患者,30例合并OSA,OSA组患者BMI高于非OSA组患者[(28.1±2.5)vs.(26.1±3.0)kg/m2,P=0.008],最低血氧饱和度(lowest blood oxygen saturation,LSpO2)显著低于非OSA患者[(79.2±7.5)%vs.(83.6±3.9)%,P=0.008],但睡眠血氧饱和度低于90%的时间占总睡眠时间的比例(90%in the total sleep time,TST90)两组间差异无统计学意义。二元Logistic回归单因素分析结果显示,清醒状态PaO2、肺间质病变程度、TST90、LSpO2与ILD患者发生PH相关。多因素分析后,TST90≥20%仍是ILD患者合并PH的独立相关因素(OR=9.460,95%CI:2.093~42.749,P=0.004)。Kaplan-Meier生存分析显示,未合并PH的ILD患者总体生存状况显著优于合并PH的ILD患者(χ^(2)=5.150,P=0.023),TST90<20%的患者总体生存状况显著优于TST90≥20%的患者(χ^(2)=5.728,P=0.017)。Cox回归模型显示TST90≥20%的ILD患者死亡风险高于TST90<20%者(HR=3.263,95%CI:1.171~9.093,P=0.024),在矫正年龄、性别等混杂因素后仍显著(HR=3.862,95%CI:1.075~13.873,P=0.038)。结论:睡眠呼吸暂停所致的夜间低氧与ILD患者PH的发生独立相关,并显著增加ILD患者的死亡风险,易于监测的夜间间歇低氧可能是评估ILD患者病情和判断预后的有效指标。

“肺虚络瘀”病机观与氧化应激在慢性阻塞性肺疾病发病过程中相关性探讨

将“肺虚络瘀”病机观为作为慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)发病的核心理论指导以探讨其与氧化应激的相关性,结合对COPD机制的现代临床调查与实验研究,对COPD病理改变过程中出现的氧化应激进行分析与探讨,认为氧化应激是COPD的重要病机之一;从肺虚对机体氧化-抗氧化平衡调节失调,提出COPD氧化-抗氧化失衡是肺虚的微观病理表现基础;氧化应激及其产生的病理改变与“肺虚络瘀”具有相同的病机改变表现;通补肺络法通过调节机体的氧化-抗氧化水平,减轻氧化应激,延缓COPD进程,从这3个方面深入探究COPD的“肺虚络瘀”病机制论与氧化应激的相关性,全面阐释COPD“肺虚络瘀”病机观的科学内涵,并从分子机制水平上诠释从肺络论治COPD的作用机制与靶点,为COPD的中医药治疗与其治疗机制研究提供新的思路及科学依据。

COPD患者肺康复知信行情况及影响因素分析

目的调查COPD患者对肺康复训练的知信行现状及其影响因素。方法选择2022年4月—2023年4月福州市某三甲医院收治的133例COPD患者作为研究对象,采用自行设计的一般资料问卷以及慢性阻塞性肺疾病患者肺康复训练知信行问卷进行数据收集。采用两独立样本t检验、单因素方差分析,多元线性回归分析进行数据分析。结果患者知识维度平均为(41.50±7.75)分,态度维度平均为(13.98±2.97)分,行为维度平均为(26.85±6.23)分,知信行总分平均为(82.02±14.19)分。患者病程、家庭收入以及有无进行家庭氧疗是COPD患者肺康复训练知信行水平情况的影响因素。结论COPD患者肺康复训练知信行水平处于中等水平。对于COPD患者进行肺康复训练,医护必须针对不同的病人,采取不同的方法,才能有效的提升患者肺康复训练知信行水平。

问题导向模式联合预知护理在慢性阻塞性肺疾病患者中的应用

目的:探讨问题导向模式联合预知护理在慢性阻塞性肺疾病(COPD)患者中的应用效果。方法:选取2022年1月1日~2023年1月1日收治的120例COPD患者作为研究对象,遵循抽签双盲法分为对照组和研究组各60例,对照组实施预知护理干预,研究组在对照组基础上实施问题导向模式;比较两组干预前后肺功能指标、生活质量[采用圣乔治呼吸问卷(SGRQ)]、自我管理能力(采用自我管理量表)、自我护理能力[采用自我护理能力测定量表(ESCA)],并发症发生情况。结果:干预后,研究组肺功能各项指标、SGRQ评分、自我管理能力均优于对照组(P<0.01);干预后,两组ESCA评分均高于干预前(P<0.01),且研究组高于对照组(P<0.01);研究组并发症发生率低于对照组(P<0.05)。结论:问题导向模式联合预知护理在COPD患者中效果显著,可以有效改善患者肺功能,提高患者生活质量、自我护理及自我管理能力,从而降低并发症发生率。