Objective: To investigate the impact of physical self-efficacy on physical activity and physical health among university students, so as to provide insights into formulation of the strategy to improve physical activity and physical health among university students. Methods: Freshmen and sophomores were sampled from a university in Guangzhou City using a convenience sampling method from December 2021 to April 2022. Students' demographics and types of sport exercises were collected using questionnaire surveys. Physical self-efficacy was tested using the Physical Self-efficacy Scale, and physical activity was measured using the International Physical Activity Questionnaire-Short, while physical health was evaluated using the school physical health standard test. The associations of physical self-efficacy with physical activity and physical health were examined using a multivariable logistic regression model. Results: Totally 4 171 questionnaires were allocated, and 3 811 valid questionnaires were recovered, with a effective recovery rate of 91.37%. The respondents included 1 582 males (41.51%) and 2 229 females (58.49%), and included 1 967 freshmen (51.61%) and 1 844 sophomores (48.39%). The median score of physical self-efficacy was 36 (interquartile range, 7) points, and there were 1 777 students reaching the national standard of physical activity (46.63%) and 1 112 students with excellent and good physical health (29.18%). Multivariable logistic regression analysis showed that physical self-efficacy was a promoting factor for the proportion of reaching the national standard of physical activity (OR=1.054, 95%CI: 1.043-1.064) and excellent and good physical health (OR=1.109, 95%CI: 1.096-1.122) after adjustment for gender, grade, specialty and source of students. Conclusion The improvement of physical self-efficacy may increase the proportion of reaching the national standard of physical activity and excellent and good physical health among university students.

Objective To investigate the predictive value of plasma homocysteine (Hcy) on contrast-induced nephropathy after percutaneous coronary intervention (PCI) in patients with acute myocardial infarction (AMI) .Methods Totally 156 patients with AMI receiving PCI in Beijing Electric Power Hospital from January 2014 to December 2015 were enrolled for the study and divided into contrast-induced nephropathy group and non-contrast-induced nephropathy group .Baseline data ,perioperative data and auxilia-ry examination results were compared between two groups .The single factor analysis and multivariate Logistic regression were used to analyze the influencing factors .Results In all 156 patients ,32 cases occurred contrast-induced nephropathy after PCI ,and the in-cidence was 20 .5% .The plasma Hcy level in contrast-induced nephropathy group was (21 .3 ± 8 .7)μmol/L ,significantly higher than (13 .3 ± 6 .1) μmol/L in non-contrast-induced nephropathy group (P< 0 .05) .Multiple Logistic regression analysis results showed that plasma Hcy levels was the independent risk factors of contrast-induced nephropathy (OR=2 .254 ,95% CI:1 .359 -3 .737 ,P=0 .002) .Conclusion About 1/5 of patients with AMI occur contrast-induced nephropathy after PCI ,and preoperative plasma Hcy level can well predict the risk of contrast-induced nephropathy ,which is worthy of clinical application .

Surgical treatment for bone and soft tumors of pelvis and sacrum presents a big challenge, because of the complex anatomy of sacropelvic region, large tumor volume at presentation, rich blood supply to the tumor and visceral involvemen, et al. Therefore, surgical excision and reconstruction are technically difficult for sacropelvic tumors. Extensive intraoperative haemorrhage could be life-threatening, and this issue remains a major concern. How to effectively control bleeding during surgery is critical for successful operation and patient's favorable prognosis. Some previous attempts, such as interventional selective internal iliac artery embolization or manual ligation through an additional anterior approach, were tested to be ineffective. Inspired by the success of resuscitative endovascular balloon occlusion of the aorta (REBOA) which resemble an endovascular tourniquet for traumatic hemorrhagic shock, some researchers have applied this techinique to control surgical bleeding during pelvic or sacral tumor resection.The authors have performed REBOA for more than 1 500 sacropelvic tumr surgeries since 2003 in Peking University People's Hospital. The patient age, the diameter of femoral artery and aorta, atherosclerosis, as well as tumor location, volume and expansion and blood suppy, have to be thoroughly evaluated prior to REBOA administration. Admittedly, the application of REBOA do reduce intraoperative bleeding, shorten the operation duration, improve the safety of surgery, yet some complications were observed including local hematoma at the puncture site, acute arterial thrombosis, femoral artery pseudoaneurysm or occlusio, et al. The purpose of this study is to review the literature on REBOA administration in pelvic and sacral tumors excision, with the focus on its indications, performing procedure, the safety and efficacy, and complications. Moreover, in order to popularize the clinical application of aortic balloon occlusion in the future, we summarize our experience of abdominal aortic balloon occlusion over 10 years.

Objective:To investigate the postoperative analgesic effect of ultrasound-guided continuous thoracic paravertebral nerve block combined with flurbiprofen axetil intravenous analgesia pump for thoracoscopic lobectomy and segmentectomy.Methods:The clinical data of 68 cases who underwent thoracoscopic lobectomy and segmentectomy in Shanxi Province Cancer Hospital between January 2021 and June 2021 were retrospectively analyzed. According to the postoperative analgesia methods, all patients were divided into the control group (36 cases) and the experimental group (32 cases). The patients in the control group received ultrasound-guided single thoracic paravertebral nerve block combined with sufentanil and flurbiprofen axetil intravenous analgesia pump, and the patients in the experimental group received ultrasound-guided continuous thoracic paravertebral nerve block combined with flurbiprofen axetil intravenous analgesia pump. The pressing times of intravenous analgesia pump, visual simulation score (VAS) during rest and activity, vitality status and adverse reactions of the two groups were compared at 2 d after operation.Results:There were no statistically significant differences in VAS during rest and activity and analgesia pump pressing times between the control group and the experimental group (all P > 0.05). The vitality status at postoperative day 2 was better than that at postoperative day 1 ( P < 0.05); while, the differences in the vitality status at postoperative day 1 and day 2 as well as the pressing times of analgesia pump in the experimental group were not statistically significant (both P > 0.05). The VAS during rest and activity on postoperative day 2 was lower than that on postoperative day 1 among patients in the control group and experimental group (both P < 0.05). In the control group, 5 cases had nausea and headache, and 2 cases had dizziness; in the experimental group, 1 case had dizziness; the difference in the adverse reaction incidence of both groups was statistically significant ( χ2 = 4.00, P = 0.045). Conclusions:Continuous thoracic paravertebral nerve block shows a favorable analgesic effect comparable with that of intravenous oxycodone in the analgesia after thoracoscopic lobectomy, and the former has less adverse reactions.