In this paper, the hardware and software designs of a portable CPR device are introduced. The system, with a DSP chip and a single chip microcomputer composing the control system, can perform CPR and monitoring at the same time. This paper expatiates on such contents as the signal acquisition and process, the drive of the touch screen, closed cardiac massage and the control of the respiration part.

With the transition from quantity-centric healthcare to value-centric healthcare, patient-reported outcome plays an important role in healthcare. Patient-reported outcome is an effective method for evaluating the outcome of hip replacement patients. It can be used not only in science research, but also in clinical practice and medical care quality assessment. This article reviews the patient-reported outcome measures in hip replacement, so as to provide references for clinical practice and research of clinical medical and nursing staff to accurately select appropriate patient-reported outcome measures in hip replacement.

Objective:To systematically analyze and evaluate the bleeding risk prediction model of patients with venous thromboembolism (VTE) , so as to provide a reference for nursing practice.Methods:PubMed, Web of Science, Embase, Cochrane Library, Wiley Online Library, CINAHL, Scopus, ProQuest, Clinicalkey, Wanfang, China National Knowledge Infrastructure, VIP databases were searched for bleeding risk prediction model of VTE patients. The retrieval time was from the establishment of the databases to August 19, 2021. Two researchers independently screened the literature according to the inclusion and exclusion criteria, then extracted the data and evaluated the quality of the literature.Results:Ten relevant literatures were included in this study, including 4 retrospective studies and 6 prospective studies. The area under the receiver operating characteristic curve of one model was greater than 0.7, and the C-index of four models were greater than 0.7. The prediction model contained many relevant factors, including bleeding history, age, anemia, tumor, antiplatelet therapy, gender, renal insufficiency, etc. In the evaluation of risk of bias and applicability, 10 studies had good applicability, but there were bias mainly due to insufficient number of events in the dependent variable, conversion of continuous variables into dichotomous variables and missing data were not reported. Conclusions:The research on the prediction model of bleeding risk in VTE patients is still in the development stage. In the future, risk prediction models with excellent performance in all aspects and low risk of bias can be developed and verified externally.

Objective:To evaluate and summarize the evidence on postoperative exercise in patients with rotator cuff injury, so as to provide a basis for guiding the postoperative exercise in patients with rotator cuff injury.Methods:We searched the Joanna Briggs Institute (JBI) Evidence-Based Health Care Center Database, British Medical Journal (BMJ) Best Practice, UpToData, China Biomedical Literature Database, WanFang Data, China National Knowledge Infrastructure, and other databases on postoperative exercise in patients with rotator cuff injury, including guidelines, evidence summaries, systematic reviews, best practice information books, clinical decision-making, recommended practices, and expert consensus. The retrieval period was from the establishment of the database to June 4, 2022.Results:A total of 30 articles were included, including one guideline, one evidence summary, one clinical decision-making, two expert consensuses, and 25 systematic reviews. 22 pieces of evidence from 12 aspects were summarized, including applicable population, exercise benefit, exercise risk, exercise assessment, exercise program, exercise method, exercise time, exercise intensity, exercise monitoring, formulation principles, management mode, and health education were summarized.Conclusions:The evidence summary process is scientific, rigorous, and comprehensive in content. In the process of evidence transformation, medical and nursing staff should select the best evidence according to specific situations and individual patient factors, so as to guide patients with rotator cuff injury to exercise safely and effectively after surgery to improve clinical outcomes.