ObjectiveTo investigate the domestic and abroad hypertension-related clinical trial registration and to analyze the registration of hypertension-related clinical researches in China.MethodsUsing hypertension as the keyword, we searched ClinicalTrials.gov and Chinese Clinical Trial Registry (ChiCTR) from January 2008 to December 2018. We analyzed the collected data on the distribution of registered clinical researches, annual trends, sample sizes, trial progress, research types, study designs, blind methods, clinical stages, the number of participating institutions, the leading institutions, etc.ResultsThe total number of registered hypertension-related clinical trails was 4 991 all over the world, and 551 items were conducted in China. Most of the sample sizes of Chinese hypertension-related clinical trials were 100 to 999. The main types of trials were interventional studies (393 items, 71.32%), followed by observational studies (126 items, 22.87%). Randomized parallel control studies (300 items, 76.34%) were the key component of interventional studies, while cohort studies (61 items, 48.41%) were the chief component of observational studies. The main stages of clinical trials were stage Ⅲ (80 items) and stage Ⅳ (122 items). There were 369 domestic single-center clinical trials (66.97%), 89 domestic multi-center clinical trials (16.15%), and 93 international multi-center clinical trials (16.88%). Among the 93 international multi-center trials of hypertension, only 25 were led by China.ConclusionsThe number of Chinese hypertension-related clinical trial registrations increased year by year and then decreased slightly, but the amount of registrations is limited. The quantity and scale of multicenter clinical studies were not as good as America. China should strengthen the awareness of clinical research registration, strengthen the publicity and supervision of the registration of clinical researches by the department of science and management, improve the number of clinical trial registrations, make Chinese clinical researches more transparent, and strive to lead more international multi-center clinical trials.
Objective To evaluate the efficacy of posterior approach discectomy with and without fusion in the treatment of lumbar disc herniation. Methods We searched MEDLINE (1950 to June 2007), OVID (1950 to April 2007), PUBMED, the China Biological Medicine Database (1978 to June 2007) and Wanfang Database (1981 to February 2007). We also handsearched several relevant journals for randomized controlled trials (RCTs) and quasi-randomized controlled trials (quasi-RCTs) comparing posterior approach discectomy with and without fusion in the treatment of lumbar disc herniation. The quality of the included trials was assessed. The Cochrane Collaboration’s RevMan 4.2.8 software was used for statistical analysis. Results Nine eligible trials involving 1911 patients were included. The meta-analyses found no statistically significant differences between the two operative procedures in the incidence of postoperative leg pain [RR 0.94, 95%CI (0.69, 1.28)], the proportion of patients requiring re-operation [RR 0.77, 95% CI (0.57, 1.04)], the incidence of post-operative lumbar canal stenosis [RR 1.23, 95%CI (0.26, 5.86)], and the relapse rate at other intervertebral spaces [RR 1.05, 95%CI (0.49, 2.26)] (Pgt;0.05).There is statistically significant differences between the two group in the incidence of peri-operative complications [RR 1.46, 95%CI (1.06, 2.00)]. Discectomy plus fusion was superior to discectomy alone in incidence of postoperative back pain [RR 0.70, 95%CI (0.53, 0.94)], relapse rate at either intervertebral space [RR 0.30, 95%CI (0.18, 0.48)] and at the same intervertebral space [RR 0.12, 95%CI (0.04, 0.37)]. Conclusions Since all the included studies were controlled trials with a great potential for biases, high-quality, large-scale randomized controlled trials are required.
①供体授精:我们发现,在供体授精的效果方面,尚缺乏高质量证据.②胞浆内精子注射+体外授精:1篇系统评价发现,尚无足够的证据说明胞浆内精子注射+体外授精与单独使用体外授精何者效果更好.③宫腔内人工授精:两篇系统评价发现,宫腔内人工授精较宫颈内授精或自然性交,能明显增加每个周期的妊娠率.④体外授精与配子输卵管内移植:1个RCT显示,尚无足够证据证明体外授精与配子输卵管内移植何者效果更好.
ObjectiveTo analyze the epidemiological and clinical characteristics of severe cases of coronavirus disease 2019 (COVID-19) in order to provide reference for clinical diagnosis and treatment.MethodThe epidemiological histories, clinical characteristics, laboratory examinations, chest images, and treatment outcomes of 20 confirmed cases of severe COVID-19 admitted to Public Health Clinical Center of Chengdu from January 16th to February 5th, 2020 were retrospectively analyzed.ResultsAmong the 20 patients with severe COVID-19, 12 were male and 8 were female. The age ranged from 34 to 84 years old, with an average of (57.4±16.5) years old. Thirteen patients (65.0%) had one or more co-existing diseases, such as hypertension (9 cases), diabetes (6 cases), and coronary atherosclerotic heart disease (4 cases). Eleven cases (55.0%) had a history of living or traveling in Wuhan, 4 cases (20.0%) had a history of living in non-Wuhan areas of Hubei Province, 3 cases (15.0%) had a history of contact with confirmed COVID-19 patients, while 2 cases had no above-mentioned epidemiological history, but had a history of traveling in non-epidemic areas. The main symptoms were fever (100.0%), cough (100.0%), shortness of breath (75.0%), and fatigue (65.0). Some patients developed into acute respiratory distress syndrome in 3-10 d after onset. The white blood cell count of the patients was normal or decreased, the hypersensitive C-reactive protein and serum amyloid protein significantly increased, while the CD4+ T lymphocyte count and CD56+ natural killer cell count significantly decreased. Sixteen patients (80.0%) were given transnasal hyperbaric oxygenation [among whom 6 patients (30.0%) were transferred to non-invasive ventilator after no improvement], 3 patients (15.0%) were given tracheal intubated ventilator, and 1 patient (5.0%) was treated by tracheal intubated ventilator combined with extracorporeal membrane oxygenation to support breathing. By April 8th, 2020, 3 patients died and the remaining 17 had been cured and discharged, with an average length of hospital stay of 21.4 d. The 3 death cases were all elderly with underlying diseases such as heart disease and pulmonary disease.ConclusionsSevere COVID-19 is associated with hypertension, diabetes, heart disease, and other basic diseases, and some patients develope acute respiratory distress syndrome. Respiratory support may help to improve prognosis.
Objective To discuss shortterm effect of rotating hinge knee prosthesis. Methods From July 2002 to April 2005, 17 cases of severe knee joint deformity and instability received rotating hinge knee prosthesis for total knee arthroplasty. There were 8 males and 9 females, aging from 41 to 79 years. The left joints were involved in 10 cases and right joint in 7 cases. All patients were admitted because of pain. The course of disease was from 1 to 7 years. There were 10 cases of osteoarthritis，5 cases of rheumatoid arthritis，1 case of traumatic arthritis after operation of left femur fracture，and 1 case of traumatic arthritis with injury of anterior cruciate ligament, meniscus medialis and medial collateral ligament after operation of left fracture of tibial plateau. According to HSS(hospital for special surgery) scoring system，the preoperative score was 36 to 58 with an average of 48.6. The preoperative flexed motion range of articulation was 21° to 80° with an average of 57.4°. Results All patients were followed up from 7 months to 3 years with an average of 23.6 months. There were no complications of thrombogenesis of veins of lower extremity, pulmonary embolism, palsy of peroneal nerve, fracture, and breakage of extended knee structure. Infection occurred in 1 case at 3 months postoperatively，the prosthesis was dislodged，antibiotic-impregnated cement was filed with knee joint，twostage arthroplasty was expected. At the last follow-up,the HSS score was 78 to 98 with an average of 91.1 in 16 patients. The flexed motion range of articulation was 75° to 100° with an average of 852° at 2 weeks postoperatively. The flexed motionrange of articular was 85° to 123° with an average of 1083° at the last followup. There were significant differences in HSS score and motion range of articular between preoperation and thelast follow-up (P＜0.05). Conclusion The short-term outcome of rotating hinge knee prosthesis is good and a long term followup is necessary.
ObjectivesTo systematically review the application of evidence-based medicine (EBM) combined with problem-based learning (PBL) method in clinical teaching.MethodsDatabases including WanFang Data, CNKI, VIP, CBM, PubMed and EMbase were searched to identify eligible randomized controlled trials that compared EBM plus PBL with traditional lecture based learning (LBL) method in clinical teaching from inception to March 28th, 2020. Two reviewers independently screened literature, extracted data and assessed risk bias of included studies. Statistical analysis was performed using Stata 14.0 software.ResultsA total of 33 randomized controlled trials with 2 855 students were included. The results showed that students in EBM combined with PBL group obtained better scores of specialized theory (WMD=6.87, 95%CI 5.08 to 8.66, P<0.001), skills examination (WMD=10.57, 95%CI 8.98 to 12.16, P<0.001) and case analysis (WMD=9.79, 95%CI 4.71 to 14.88, P<0.001), comparing with those in LBL group. Besides, EBM combined with PBL method improved students’ overall ability including independent learning capability, clinical thinking ability, problem-solving capability, literature exploring capacity, communication and presentation skills and team-work ability.ConclusionsApplication of EBM combined with PBL method can improve clinical teaching quality.
Objective To analyze the adverse drug reactions (ADR) of Ciwujia injection and the relative influence factors. Methods We searched all clinical studies and ADR reports of Ciwujia injection from the China National Knowledge Infrastructure (CNKI) database. The relevant information such as the diseases for treatment; menstruum, dosage and compatibility of Ciwujia injection; the age, gender and allergic history of patients; and the category, treatment and prognosis of ADR were collected and analyzed. Results In the 800 clinical studies, only 97 (12.1%) reported 285 ADR cases, 144 ADR reports including 236 ADR cases. Of the ADR cases, the male to female ratio was 1׃1.34, mainly in 40 to 69 years group; The ADR cases mainly including anaphylactic shock and local pain in ADR reports and clinical studies, respectively; 72.3 percent ADR cases were Ⅲ to Ⅳ class, 4 anaphylactic shock cases died; the diseases for treatment of ADR cases mainly were coronary artery heart disease and cerebral infarction; 27 (11.4%) ADR cases had allergic history; The menstruum of Ciwujia injection mainly were 5% glucose, 0.9% NaCl and 10% glucose, drug incompatibility in 36 ADR cases; The usual dosage of Ciwujia injection was 20-60 ml; 196 (83.0%) ADR cases occurred in first time medication, mainly in the early 30 minutes of medication used. Conclusion (1) In both ADR reports and clinical studies of Ciwujia injection, there are some problems of ADR and adverse drug events (AE) were not easily distinguishable, key information of total prescriptions divided by drug persons were lacking, so we can’t calculate the ADR rate, the reporting quality remained to be improved. (2) To support the rational drug use, the basic researches of Ciwujia injection remains to be further studied, especially the dose-finding studies. (3) As one of the most frequently reported ADR of traditional Chinese medicine (TCM) injection, high quality ADR monitoring, normative ADR reporting and timely analyzing the ADR reason of Ciwujia injection is extremely urgent.
ObjectiveTo explore the clinical characteristic, operation time, and methods of elderly calculous cholecystitis. MethodsThe data of 386 cases of elderly calculous cholecystitis in our hospital from January 2008 to April 2014 were retrospectivly analyzed. ResultsIn 386 patients, 234 cases were chronic cholecystitis, 152 cases were acute calculous cholecystitis; there were preoperative complications in 174 cases (45.08%); 234 cases of chronic calculous cholecystitis patients underwent elective operation, 35 cases in 152 cases of acute phase underwent operation at 72 h, the remaining 117 cases underwent operation in within 2 weeks of onset. Laparoscopic cholecystectomy (LC) were in 283 cases, including transfer laparotomy operation in 8 cases; underwent conventional open cholecystectomy in 103 cases. Postoperative complications occurred in 49 cases, the complication rate was 12.69%, including incision infection, pulmonary infection, acute urinary retention, urinary tract infection, biliary fistula and so on. Three hundreds and eighty-four cases were cured, 2 cases died, for cholecystolithiasis complicated with severe acute cholangitis, died from multi organ failure in 3 days after operation. ConclusionsThe clinical characteristics of elderly calculous cholecystitis is unique. To strictly grasp the operation indication, selection of operation time, take individual operation method with the disease, and strengthen treatment of perioperative period are the key to improve the cure rate and the operation success rate of elderly cholecystitis.
Objective To provide the anatomic bases for clinical application of the second dorsal metacarpal artery(SDMA) island flap with double pivot points. Methods The origin,branches and distribution of the recurrent cutaneous branch of the SDMA were observed in 30 adult fresh cadaver specimens, which were illustrated with special dye.Eighteen cases of skin defets of the thumb were repaired with the SDMA island flap. The defect locations were the dorsal part in 11 cases and palmar part in 7 cases, including 3 cases of defect in association with long pollical extensor defect and 2 cases of defect in association with dorsal skin defect of proximal finger. The flap area ranged from 2 cm×3 cmto 3 cm×5 cm. Results The appearance of therecurrent cutaneous branch of the SDMA was observed in all cases(100%), which originated 0.5±0.2 cm distant from the distal intersectiones between the SDMA and the index extensor and disappeared 1.2±0.5 cm distant from the proximal metacarpophalangeal joint. The branches of 1.7±0.7 were seen with a longitudinal fan-like distributionforward proximal part on the deep surface of the dorsal superficial vein. The exradius and the length of the recurrent cutaneous branch of the SDMA were 0.3±0.1 mm and 6.5±0.8 mm, respectively. The transplanted flaps survived in all cases and 16 cases were followed up for 8-14 months. The colour and appearance of the skin were satisfactory. The two-point discriminations were 0.9 mm in 3 cases by bridging digital nerve and 1.1 mm in 9 cases by anastomosing dorsal digital nerve; while the two-point discrimination was 13-15 mm in 4 cases without anastomosing nerve. Conclusion The origin,branches and distribution of the recurrent cutaneous branch of the SDMA is constant, which provide a potentially longer pedicle and increase the possibility to rotate the flap and also avoid the donor skin defect of rotation of the flap.