Canadian respiratory journal最新文献

{"title":"Response to: Comment on \"Noninvasive Ventilation Weaning in Acute Hypercapnic Respiratory Failure due to COPD Exacerbation: A Real-Life Observational Study\".","authors":"Paola Faverio, Anna Stainer, Federica De Giacomi, Grazia Messinesi, Valentina Paolini, Anna Monzani, Paolo Sioli, Irdi Memaj, Oriol Sibila, Paolo Mazzola, Alberto Pesci","doi":"10.1155/2019/4897045","DOIUrl":"https://doi.org/10.1155/2019/4897045","url":null,"abstract":"","PeriodicalId":9416,"journal":{"name":"Canadian respiratory journal","volume":"2019 ","pages":"4897045"},"PeriodicalIF":2.1,"publicationDate":"2019-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6800890/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141731005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Group Asthma Education on Asthma Control and Emergency Room Visits in an Underserved New York Community","authors":"Asghar Ali, S. G. Pena, C. Huggins, F. Lugo, M. Khaja, G. Díaz-Fuentes","doi":"10.1155/2019/5165189","DOIUrl":"https://doi.org/10.1155/2019/5165189","url":null,"abstract":"Objective Asthma education programs have been shown to be effective in decreasing health care utilization and improving disease control and management. However, there are few studies evaluating the outcomes of group asthma education. The aim of this study was to assess the impact of an outpatient adult group asthma education program in an inner-city-based hospital caring for an underserved population. Methods We conducted a pre- and poststudy of all patients with asthma who participated in two structured group asthma education sessions led by a respiratory therapist, clinical pharmacist, and pulmonologist. The study period (January 2016 to April 2018) included the year before group education and the year after education. The primary outcomes were the number of patients requiring emergency room visits and hospital admission. The secondary outcomes included asthma control as assessed by Asthma Control Test scores, use of systemic corticosteroids, and change in test scores postintervention. Results Eighty-eight patients received group education during the study period; 82 attended 2/2 sessions, and 6 attended 1/2 sessions. The study population was largely Hispanic (73%) or African American (25%) and had a mean age of 58 years. Most had moderate (57%) or severe (25%) persistent asthma. Significantly, fewer patients required emergency room visits in the postintervention period than in the preintervention period (20 visits vs. 42 visits, p=0.0002). Group education was also associated with increased asthma control (p=0.0043), decreased use of systemic corticosteroids (p=0.0005), and higher postintervention test scores (p=0.0001). Conclusions Group asthma education provided by a multidisciplinary team in an inner-city hospital clinic caring for underserved and minority populations is feasible and may decrease utilization of health care resources when patients are educated and empowered to participate in their asthma management.","PeriodicalId":9416,"journal":{"name":"Canadian respiratory journal","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2019/5165189","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43724661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comment on “Noninvasive Ventilation Weaning in Acute Hypercapnic Respiratory Failure due to COPD Exacerbation: A Real-Life Observational Study”","authors":"Habib Md Reazaul Karim, A. Esquinas","doi":"10.1155/2019/5490510","DOIUrl":"https://doi.org/10.1155/2019/5490510","url":null,"abstract":"We have read with great interest the article by P. Faverio et al. published in this journal [1]. We thank the authors for being able to establish an adequate strategy of weaning from noninvasive ventilation (NIV) incorporating interruption of ventilation. *e article also rightly highlights the lack of consensus and studies in this regard. Although the study has a retrospective design, the hypothesis tested and evidence provided are compelling. Yet, we consider that some interesting practical aspects are worth mentioning. While the authors have tested the methodology of NIV interruption well, the number of days at each stage of weaning, NIV during afternoon and night or nocturnal NIV only, was at physician discretion. *is is an exciting aspect and confusing as well because, eventually, the criteria may be influenced by wide individual variability, which may make it impossible to extrapolate the results. Good numbers (39%) of the patients in the chronic domiciliary NIV group were not able to be weaned by the new method and continued to be in the domiciliary NIV settings. As there are no clear criteria for such patients, it will be worth knowing the settings, whether these patients were finally stabilized, and if yes, “how.” *ese aspects will help readers in better application or exclusion of the new interruption-based weaning in this subgroup of patients in the future. Pneumothorax due to severe bullous emphysema is considered by the authors as a risk factor for not weaning. While we agree that such patients are prone to not weaning, pneumothorax it is more related to the selected positive inspiratory and end-expiratory pressure levels selected [2]. However, the positive pressure used by the authors was not so high, so this association was not much clear from this study. All these aspects lead us to believe that if these patients were taken into account, the results might have been different. We again thank the authors for another interesting observation of no recurrence of AHRF during hospitalization after weaning by the new method. *is is interesting and raises speculation whether this can be considered as a protective aspect of the NIV. A prospective randomized study will give us more evidence on these aspects, especially which subgroup of patients will be benefited by this new technique.","PeriodicalId":9416,"journal":{"name":"Canadian respiratory journal","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2019/5490510","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49494542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Tiotropium Bromide on Airway Inflammation and Programmed Cell Death 5 in a Mouse Model of Ovalbumin-Induced Allergic Asthma","authors":"Juan Wang, Xiaolin Diao, Hong Zhu, B. He","doi":"10.1155/2019/6462171","DOIUrl":"https://doi.org/10.1155/2019/6462171","url":null,"abstract":"Rationale We previously demonstrated increased expression of programmed cell death 5 (PDCD5) in asthmatic patients and ovalbumin-induced allergic asthma. International guidelines (GINA 2019) have included the use of tiotropium bromide for chronic treatment of the most severe and frequently exacerbated asthma in patients ≥6 years old, who do not have good response to inhaled corticosteroids. Objective To explore the role of tiotropium and its effect on PDCD5 level in a mouse model of chronic asthma. Methods We divided 12 female mice into 2 groups: untreated asthma (n = 6) and tiotropium-treated asthma (n = 6). The impact of tiotropium was assessed by histology of lung tissue and morphometry. Pulmonary function was tested by using pressure sensors. The number of cells in bronchoalveolar lavage fluid (BALF) was detected. Levels of PDCD5, active caspase-3, and muscarinic acetylcholine receptors M2 (ChRM2) and M3 (ChRM3) were examined. Results Tiotropium treatment significantly reduced airway inflammation and remodeling in asthmatic mice and intensified the lung function. PDCD5 level was reduced with tiotropium (p < 0.05). Moreover, active caspase-3 level was decreased with tiotropium (p < 0.001), and ChRM3 level was increased. Conclusions Tiotropium treatment may alleviate the pathological changes with asthma by regulating apoptosis.","PeriodicalId":9416,"journal":{"name":"Canadian respiratory journal","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2019/6462171","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48090440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"P27 Promotes TGF-β-Mediated Pulmonary Fibrosis via Interacting with MTORC2","authors":"Yuanqiang Dai, Xiao-qing Li, Da-peng Dong, Hai-bo Gu, Cheng-ying Kong, Zhihao Xu","doi":"10.1155/2019/7157861","DOIUrl":"https://doi.org/10.1155/2019/7157861","url":null,"abstract":"Pulmonary fibrosis (PF), a progressive and life-threatening pulmonary disease, is the main pathological basis of interstitial lung disease (ILD) which includes the idiopathic pulmonary fibrosis (IPF). No effective therapeutic strategy for pulmonary fibrosis has been established. TGF-β signaling has emerged as the vital regulator of PF; however, the detailed molecular mechanisms of TGF-β in PF were uncertain. In the present study, we proved that inhibition of MTORC2 suppresses the expression of P27 in MRC5 and HLF cells. And in bleomycin-induced PF model, the expression of α-SMA and P27 was upregulated. Moreover, TGF-β application increased the level of α-SMA, vimentin, and P27 in MRC5 and HLF cells. Furthermore, P27 overexpression advanced the cell cycle process and promoted the proliferation of MRC5 and HLF cells. Finally, the rescue experiment showed that MTORC2 knockdown reversed P27 overexpression-induced cell cycle acceleration and proliferation. Thus, our results suggest that P27 is involved in TGF-β-mediated PF, which was regulated by MTORC2, providing a novel insight into the development of PF.","PeriodicalId":9416,"journal":{"name":"Canadian respiratory journal","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2019/7157861","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44609985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Psychometric Testing of the CHAMPS Questionnaire in French Canadians with COPD","authors":"Susanne Mak, J. Bourbeau, N. Mayo, S. Wood-Dauphinee, J. Soicher","doi":"10.1155/2019/2185207","DOIUrl":"https://doi.org/10.1155/2019/2185207","url":null,"abstract":"Physical activity is an important health behaviour in reducing morbidity and mortality in individuals with chronic obstructive pulmonary disease (COPD). Accurate measurement of the characteristics of physical activity is essential to understanding the impact of COPD on physical activity. In a previous article, we reported on the cross-cultural adaptation of the Community Healthy Activities Model Program for Seniors (CHAMPS) questionnaire to produce a Canadian French version. The CHAMPS yields four summary scores: two caloric expenditure scores (moderate-intensity activities and all activities) and two frequency scores (moderate-intensity activities and all activities). The objective of this study was to evaluate test-retest reliability and convergent construct validity, in both English and French versions of the CHAMPS, in individuals with COPD. Test-retest reliability was assessed by administering the CHAMPS at two visits (2-3 weeks apart), to 19 English-speaking and 18 French-speaking participants. Validity was assessed in 56 English-speaking and 74 French-speaking participants, who completed the CHAMPS, Short Form- (SF-) 36, and St. George's Respiratory Questionnaire (SGRQ) at a single visit. Results from reliability testing indicated that intraclass correlation coefficients (ICCs) generally met the threshold for good reliability (ICC > 0.6), with frequency scores showing greater stability than caloric expenditure scores. Validity testing yielded moderate correlations (r = 0.4-0.5) of the CHAMPS with the SF-36 domains and summary score capturing constructs of physical function, and with the SGRQ activity domain and total score. CHAMPS frequency scores for moderate-intensity activities correlated more strongly than other scores, with physical aspects of the SF-36 and SGRQ. The English and French versions of the CHAMPS did not show any substantial differences in reliability (frequency scores) or validity (frequency and caloric expenditure scores). Findings from this study support the reliability and validity of the CHAMPS. In particular, frequency scores for moderate-intensity activities can provide useful information on physical activity levels in individuals with COPD. This trial is registered with NCT00169897. ISRCTN registration number: IRSCTN32824512.","PeriodicalId":9416,"journal":{"name":"Canadian respiratory journal","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2019/2185207","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46865643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Prevalence of Asthma and Respiratory Symptoms among Cross-Country Skiers in Early Adolescence","authors":"E. Lennelöv, Tommie Irewall, Estelle Naumburg, Anne Lindberg, N. Stenfors","doi":"10.1155/2019/1514353","DOIUrl":"https://doi.org/10.1155/2019/1514353","url":null,"abstract":"Objective To determine the prevalence of asthma and respiratory symptoms among Swedish cross-country skiers in early adolescence in comparison to a population-based reference group of similar ages. Methods A postal questionnaire on asthma, asthma medication, allergy, respiratory symptoms, and physical activity was distributed to Swedish competitive cross-country skiers aged 12–15 years (n = 331) and a population-based reference group (n = 1000). The level of asthma control was measured by the Asthma Control Test. Results The response rate was 27% (n = 87) among skiers and 29% (n = 292) in the reference group. The prevalence of self-reported asthma (physician-diagnosed asthma and use of asthma medication in the last 12 months) and the prevalence of reported wheezing during the last 12 months were 23% and 25%, respectively, among skiers, which were significantly higher than the values reported in the reference group (12% and 14%). Skiers exercised more hours/week than the reference group. Among adolescents with self-reported asthma, neither the usage of asthma medications nor the level of asthma control according to the Asthma Control Test differed between skiers and the reference group. Conclusions Adolescent competitive cross-country skiers have an increased prevalence of respiratory symptoms and asthma compared to nonskiers.","PeriodicalId":9416,"journal":{"name":"Canadian respiratory journal","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2019/1514353","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46371708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Airways' Mechanical Stress in Lung Disease: Implications for COPD Pathophysiology and Treatment Evaluation","authors":"P. Santus, M. Pecchiari, F. Tursi, V. Valenti, M. Saad, D. Radovanovic","doi":"10.1155/2019/3546056","DOIUrl":"https://doi.org/10.1155/2019/3546056","url":null,"abstract":"The airway epithelium stretches and relaxes during the normal respiratory cycle, and hyperventilation exaggerates this effect, resulting in changes in lung physiology. In fact, stretching of the airways influences lung function and the secretion of airway mediators, which in turn may cause a potentially injurious inflammatory response. This aim of the present narrative review was to illustrate the current evidence on the importance of mechanical stress in the pathophysiology of lung diseases with a particular focus on chronic obstructive pulmonary disease (COPD) and to discuss how this may influence pharmacological treatment strategies. Overall, treatment selection should be tailored to counterpart the effects of mechanical stress, which influences inflammation both in asthma and COPD. The most suitable treatment approach between a long-acting β2-agonists/long-acting antimuscarinic-agonist (LABA/LAMA) alone or with the addition of inhaled corticosteroids should be determined based on the underlying mechanism of inflammation. Noteworthy, the anti-inflammatory effects of the glycopyrronium/indacaterol combination on hyperinflation and mucociliary clearance may decrease the rate of COPD exacerbations, and it may synergistically improve bronchodilation with a double action on both the cyclic adenosine monophosphate (cAMP) and the acetylcholine pathways.","PeriodicalId":9416,"journal":{"name":"Canadian respiratory journal","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2019/3546056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44707002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Concomitant Interstitial Lung Disease with Psoriasis","authors":"Genta Ishikawa, S. Dua, A. Mathur, S. Acquah, M. Salvatore, M. Beasley, M. Padilla","doi":"10.1155/2019/5919304","DOIUrl":"https://doi.org/10.1155/2019/5919304","url":null,"abstract":"Background We encounter interstitial lung disease (ILD) patients with psoriasis. The aim of this case series was to examine clinical and radiographic characteristics of patients with concomitant psoriasis and ILD. Methods This is a retrospective review of our institutional experience of ILD concomitant with psoriasis, from the database in the Advanced Lung/Interstitial Lung Disease Program at the Mount Sinai Hospital. Out of 447 ILD patients, we identified 21 (4.7%) with antecedent or concomitant diagnosis of psoriasis. Clinical, radiographic, pathological, and outcome data were abstracted from our medical records. Results Median age was 66 years (range, 46–86) and 14 (66.7%) were male. Thirteen (61.9%) had not previously or concomitantly been exposed to immunosuppressive therapy directed against psoriasis. Two (9.5%) ultimately died. Clinical diagnosis of ILD included idiopathic pulmonary fibrosis, 11 (52.4%); nonspecific interstitial pneumonia (NSIP), 2 (9.5%); cryptogenic organizing pneumonia, 2 (9.5%); chronic hypersensitivity pneumonitis, 2 (9.5%); and the others, while radiographic diagnosis included usual interstitial pneumonia pattern, 9 (42.9%); NSIP pattern, 6 (28.6%); organizing pneumonia pattern, 4 (19.0%); hypersensitivity pneumonitis pattern, 2 (9.5%); and the others. Conclusions We report 21 ILD cases with antecedent or concomitant diagnosis of psoriasis. Further prospective studies are required to determine the association between ILD and psoriasis.","PeriodicalId":9416,"journal":{"name":"Canadian respiratory journal","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2019/5919304","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42593867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of Auto- and Fixed-Continuous Positive Airway Pressure on Air Leak in Patients with Obstructive Sleep Apnea: Data from a Randomized Controlled Trial","authors":"M. Lebret, Marie-Caroline Rotty, Cyril Argento, J. Pépin, R. Tamisier, F. Arbib, D. Jaffuel, N. Molinari, J. Borel","doi":"10.1155/2019/6310956","DOIUrl":"https://doi.org/10.1155/2019/6310956","url":null,"abstract":"Auto-CPAP may cause sleep fragmentation due to variations in pressure and unintentional leaks. The aim of this study was to compare air leak between fixed-CPAP and auto-CPAP after 4 months of CPAP treatment. This study is an ancillary analysis of a randomized, double-blind, parallel, controlled trial over 4 months, comparing fixed- and auto-CPAP in newly diagnosed patients with OSA. The following data were extracted from the CPAP devices: mean and 90th percentile pressure, residual apnea-hypopnea index, mean CPAP use, and amount of leak. Within each arm, patients were also randomly allocated to use of one of the three different brands of devices. Since the leak was reported differently for each device, median leak value was determined for each brand and leaks were classified as “above the median” or “below the median”. Data from 269 patients were analyzed. The univariate analysis showed that tobacco consumption, CPAP level, and oronasal masks were associated with leaks above the median value but not the type of CPAP. The multivariate analysis showed that only CPAP level and oronasal masks were associated with leaks below the median. There were no differences in the types of mask used between fixed- and auto-CPAP. There was no impact of the type of CPAP on leaks or the type of interface used. We used a method based on the median leak value to standardize comparisons across devices which report leaks with different definitions.","PeriodicalId":9416,"journal":{"name":"Canadian respiratory journal","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2019-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2019/6310956","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44103990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}