Background: This study will investigate the efficacy and safety of shoulder arthroscopic surgery (SAS) for patients with rotator cuff injury (RCI). Methods: We will systematically search for randomized controlled trials in the electronic databases of PUBMED, EMBASE, Cochrane Library, CINAHL, PsycINFO, Web of Science, Allied and Complementary Medicine Database, Chinese Biomedical Literature Database, and China National Knowledge Infrastructure. All above databases will be searched from their beginning to March 1, 2020 without language restrictions. Two reviewers will independently scan retrieved records, evaluate study quality and extract data. If possible, we will synthesize the data and conduct a meta-analysis by RevMan 5.3 software. Results: This systematic review will summarize the most recent evidence to explore the efficacy and safety of SAS for patients with RCI. Conclusion: The findings of this study will help to provide a genuine understanding of perspective from a scientific basis on the efficacy and safety of SAS for patients with RCI. PROSPERO registration number: PROSPERO CRD42020170009.

Background: This study will assess the efficacy and safety of ventilator for the management of severe pneumonia (SP). Methods: This study will search the following electronic databases in MEDLINE, EMBASE, Web of Science, PsycINFO, Cochrane Library, CNKI, and Scopus from the beginning to present without language restrictions. Two authors will screen all records according to the eligibility criteria; assess study quality; and extract all essential data from eligible studies. If sufficient studies are included, we will pool the extracted data and carry out meta-analysis. Results: This study will summarize published studies to assess the efficacy and safety of ventilator for patients with SP. Conclusion: The results of this study may supply a genuine understanding of perspective from a scientific basis on ventilator for the management of patients with SP.

Review question / Objective: Can ventilator effectively manage patients with severe pneumonia (SP)? Condition being studied: Ventilator; sever pneumonia. METHODS Participant or population: All adult patients (aged more than 18 years old) who were diagnosed as SP will be included, regardless race, gender, and severity and duration of SP.

Background: This study will assess the efficacy and safety of arthroscopic capsular release (ACR) for the treatment of post-stroke frozen shoulder (PSFS). Methods: We will carry out a systematic study of randomized controlled trials that assess the efficacy and safety of ACR for PSFS. We will search all potential records for any eligible trials from selected electronic databases (MEDLINE, EMBASE, Cochrane Library, Web of Science, Chinese Biomedical Literature Database, WANGFANG, and China National Knowledge Infrastructure) and grey literature sources from inception to the present. Two authors will independently perform study selection, data extraction, and study quality assessment. Any disagreement will be solved by a third author via consultation. Statistical analysis will be carried out by RevMan 5.3 software. Results: This study will comprehensively summarize current eligible studies to systematically assess the efficacy and safety of ACR for PSFS. Conclusion: This study will provide evidence to determine whether ACR is an effective management for patients with PSFS.