Objective To systematic investigate whether phase angle of bioelectrical impedance is associated with the functionality, severity, and prognosis of individuals afflicted with chronic obstructive pulmonary disease (COPD). Methods Relevant literature from the PubMed, Embase, Web of Science, Scopus, CNKI, and WanFang databases was retrieved, and literature screening and data extraction in accordance with standardized methods were conducted. Literature quality was assessed by utilizing Mixed Methods Appraisal Tool. Subsequently, data pertaining to the results was extracted for summarization and induction, and descriptive analyzed through qualitative synthesis. Results A total of 11 studies, encompassing 2189 subjects, were included in this review, and the overall quality of the literature was deemed relatively high. Of these studies, three examined the correlation between phase angle and the severity of COPD, eight studies examined the correlation between phase angle and pulmonary and physical function in COPD, and seven studies reported the association between phase angle and adverse outcomes such as hospitalization time, nutritional risk, acute exacerbation and mortality in COPD. The collective findings suggestted that reduced levels of phase angle are linked to severe illness, diminished function, and unfavorable prognosis among individuals with COPD. Phase angle emerged as an independent predictor of lung function, physical exercise endurance, acute exacerbation and mortality in COPD patients. Conclusion The phase angle level of COPD patients is associated with their disease severity, function, and prognosis, and is an potential available indicator for clinical management of COPD patients.
ObjectiveTo systematically evaluate the factors affecting the curative effect of pulmonary rehabilitation in COPD patients,and to provide theoretical basis for the implementation of rehabilitation. MethodsLiterature on the influencing factors of pulmonary rehabilitation efficacy in COPD patients was systematically searched in PubMed,Web of Science,Medline,ProQuest,Embase,CNKI and Wanfang databases from August 30,2023. According to the inclusion and exclusion criteria of the literature,the factors influencing the pulmonary rehabilitation effect of COPD patients were analyzed based on the 5 dimensions of the new implementation comprehensive framework. ResultsA total of 2620 COPD patients with 18 literatures were included in this study. Based on the new CFIR framework,11 promoting factors and 10 hindering factors of pulmonary rehabilitation efficacy were extracted and coded into 5 fields:innovation field,external factor field,internal factor field,individual characteristics field and implementation process field. ConclusionBy applying the new implementation comprehensive framework to evaluate the factors affecting the pulmonary rehabilitation effect of COPD patients,it provides an important reference for the development of rehabilitation strategies for COPD patients. It is suggested to adopt the comprehensive rehabilitation strategy of interdisciplinary,wide field and multi-team in order to promote the best benefit of both individual and social medical system in the pulmonary rehabilitation process of COPD patients.