Objective To observe the effect of Fufang XueShuanTong (FXST) on prevention for retinal microangiopathy of diabetic rats. Methods Take the normal male Wistar rats as normal control group; take the streptozotocin (STZ) Wistar rats as diabetic model group. And then the diabetic model group was divided into two groups: diabetic control group (without other treatment) and FXST treatment group (with FXST at dose 900 mg/kg, by the way of given medicine from esophagus to stomach, 1 time/day, experimental period was 20 weeks). When all the animals had been raised for 20 weeks, not only retinal digesting preparations were used, the endothelium/pericyte ratio (E/P ratio) and micro-vascular changes were observed by microscope, vascular relative area were measured by image system，but also the thickness of capillary basement membrane, the ultrastructural changes of endothelium and pericyte were observed by transmission electron microscope. Results On the 20th week, retinal digesting preparations showed that acellular capillaries, irregular vessel nets, segmental expansion, segmental stricture even occlusion, pericyte number decreased obviously, E/P ratio increased, vascular relative area increased and ghosts of pericytes etc in diabetic control group. Compared to diabetic control group, the retinal changes of FXST treatment group was lighter, the E/P ratio and vascular relative area were closer to normal control group. Transmission electron microscopy results showed that thickness of basement membrane was increased in DM group, vascular changes was light in FXST treated group. Conclusions FXST can prevent the changes of micrangium in diabetic rats effectively. （Chin J Ocul Fundus Dis，2008，24：272-275）
The human sclera accounts for 95% of the surface of the eyeball, providing ample contact area which is suitable for targeted trans-scleral ocular drug delivery. Currently there are several tans-scleral sustained-release strategies, including intra-scleral delivery, episcleral delivery, as well as tans-scleral iontophoresis. Different devices and methods have their own advantages and disadvantages, for example, intra-scleral delivery is somehow invasive, and episcleral delivery device needs to be made thin to prevent erosion of conjunctiva, iontophoresis needs to be frequently repeated as of its short-term effect. With the development of bio-material engineering technology, episcleral microfilm could become an ideal drug delivery route for posterior segment ocular diseases.
Day surgery dates back to 1909, when it was first performed by British paediatricians. Anesthesia management for day surgery requires quick onset, early recovery, rapid recovery, and few perioperative adverse reactions. Ensuring the medical safety of patients is the primary condition for the gradual implementation of day surgery. With the continuous development of medical level, the applicable field of day surgery has gradually expanded, and new concepts and progress have also emerged in anesthesia management. This article summarizes the relevant research at home and abroad, and reviews the new progress of anesthesia for day surgery from three aspects: preparation before anesthesia, selection of anesthesia methods, and recovery after anesthesia, in order to provide a reference for anesthesia management of day surgery.
Objective To investigate the effect and clinical significance of 3 d and 1 d bowel preparation method for colorectal carcinoma surgery on preoperative gut mucosal barrier function. Methods Plasma levels of D-lactate (D-LAC), diamine oxidase (DAO) and endotoxin (ET) were measured at 2 h before operation in 3 d bowel preparation group (50 cases) and 1 d bowel preparation group (50 cases), 25 cases of inguinal hernia were included as control group. D-LAC, DAO and ET were detected by using enzymatic spectrophotometric assay, spectrophotometric assay and limulus lysate test with azo chromogenic substrate, respectively. Results Preoperative plasma levels of D-LAC, DAO and ET in 3 d bowel preparation group were (10.25±1.43) mg/L, (5.82±0.80) U/ml and (10.11±1.41) ng/L respectively. In 1 d bowel preparation group the corresponding values were (10.19±1.35) mg/L, (5.80±0.81) U/ml and (9.82±1.35) ng/L respectively. There were no significant differences between 3 d and 1 d bowel preparation group (Pgt;0.05), compared with hernia group, 1 d and 3 d bowel preparation group were also no statistically significant differences (Pgt;0.05). Conclusions There are no significant preoperative gut mucosal barrier function damages in patients with 1 d and 3 d bowel preparation for colorectal carcinoma surgery, 1 d bowel preparation for colorectal carcinoma surgery can be performed in colorectal carcinoma patients, and 3 d bowel preparation can be used for certain special colorectal carcinoma patients.
ObjectiveTo identify a more popularized preparation protocol of leukocytes-rich platelet-rich plasma (L-PRP) for higher tolerance rate.MethodsThe peripheral blood samples of 76 volunteers (45.0 mL/case) were mixed with 5 mL sodium citrate injection for blood transfusion, and L-PRP was prepared by twice centrifugations. All blood samples were divided into three groups according to the parameters of twice centrifugation: experimental group A (12 cases, 400×g, 10 minutes for the first time and 1 100×g, 10 minutes for the second time), experimental group B (27 cases, 800×g, 10 minutes for the first time and 1 100×g, 10 minutes for the second time), and control group (37 cases, 1 360×g, 10 minutes for the first time and 1 360×g, 10 minutes for the second time). The platelet recovery rate and platelet and leukocyte enrichment coefficient of L-PRP in each group were calculated and compared.ResultsAfter removal of abnormal blood samples (platelet recovery rate was more than 100% or white thrombus), the remaining 55 cases were included in the statistical analysis, including 10 cases in experimental group A, 21 cases in experimental group B, and 24 cases in control group. The platelet enrichment coefficient and platelet recovery rate of experimental group B were significantly higher than those of experimental group A and control group (P<0.05); there was no significant difference between experimental group A and control group (P>0.05). There was no significant difference in leukocyte enrichment coefficient between experimental groups A, B, and control group (P>0.05).ConclusionThe preparation quality of PRP is affected by various factors, including centrifugal force, centrifugal time, temperature, and operation process, etc. Twice centrifugation (800×g, 10 minutes for the first time and 1 100×g, 10 minutes for the second time) is an ideal and feasible centrifugation scheme, which can obtain satisfactory platelet recovery rate and enrichment coefficient with thicker buffy coat, which can reduce the fine operation requirements for operators, improve the fault tolerance rate and generalization.
Based on the principle of manual preparation of sclerosing foam with Tessari method, using the analysis of user requirements and combining it with theory of mechanics, we designed an automatic equipment. The device could be used to replace the manual operation, and could overcome the shortcomings of manual sclerosing foam preparation, such as the difficulty in controlling of pushing speed and stroke and poor reproducibility. This automatic device has the functions of adjustable pushing speed, pushing frequency, pushing stroke and is suitable for a variety of different types of syringes. It can not only provide quantitative parameters for the study of foam properties, but also be used for the standardization of clinical sclerosing foam. The experimental study on "the effect of pushing speed on the stability of foam" was carried out with using the device, and the experimental results were quite satisfactory.
Objective To explore the short-term effects of reengineering for the first-surgery preparation process in day surgery management. Methods In July 2019, West China Hospital of Sichuan University began to reconstruct a standard process for the first-surgery preparation process in day surgery based on the theory of process reengineering. Patients who underwent the first general anesthesia operation on the day at the Day Surgery Center between February and June 2019 were selected as the pre-reengineering group, and those between July and November 2019 were selected as the post-reengineering group. The time intervals for each stage of the surgical process and the incidences of delays in each stage were compared between the two groups. Results A total of 633 patients were included, with 309 in the pre-reengineering group and 324 in the post-reengineering group. The time from arrival to admission for the first patient [(30.24±7.86) vs. (22.45±10.65) min, P<0.001], time from admission to doctor’s orders [(9.42±7.07) vs. (5.45±5.86) min, P<0.001], waiting time before entering the operating room after nursing preparation [(23.67±17.59) vs. (18.46±19.60) min, P=0.001], and total waiting time from admission to entering the operating room [(73.42±18.46) vs. (65.27±21.00) min, P<0.001] in the post-reengineering group were all shorter than those in the pre-reengineering group. The incidence of patients admitted after 07:50 (2.3% vs. 0.3%, P=0.034) and the incidence of nurses’ preparation completion time extending beyond 08:20 (6.1% vs. 2.5%, P=0.022) in the post-reengineering group were lower than those in the pre-reengineering group. Conclusion The reengineering of the first-surgery preparation process significantly improves the management of day surgery across multiple stages of the process, reducing patient waiting times and minimizing delays in admission, order processing, and nursing preparations that may affect patients’ punctual entry into the operating room.
ObjectiveTo explore the clinical application of electronic crossmatch technique in the preparation of blood in operation. MethodsBetween January 2012 and December 2012, in the donor and the application operation preparation of blood in patients with ABO/RhD, blood type was detected and antibody was screened. The donors with correct blood type and negative antibody and the patients with accordant results of two blood identification and negative antibody underwent electronic cross-matching by electronic cross-matching rules, and completed the blood preparation program. At the same time, the patients underwent traditional blood cross-matching method for preparation to ensure the blood compatibility and to compare the advantages and disadvantages of the two kinds of preparing methods. ResultsIn 7721 blood samples, 7647 samples matched the electronic cross-matching rules; no incompatibility of ABO/RhD was found using electronic cross-matching by computer system. Also, no incompatibility was found using cross-matching by traditional serum method in 7647 blood samples; the average time was 10 minutes, while 100% occupation of blood preparation for operation was found. ConclusionElectronic cross-matching techniques for preparing operation can save manpower and material resources, and also may optimize the operation process, improve the work efficiency and the safety of blood transfusion.
Objective To analyze the effectiveness and effect on pregnant outcome about living preparation of lactobacillus versus metronidazole in the treatment of bacterial vaginosis in pregnancy. Methods We searched PubMed, The Cochrane Library, VIP, CNKI, Wangfang, CBM, FMJS, and FEBMT to identify randomized controlled trials (RCT) of living preparation of lactobacillus versus metronidazole for bacterial vaginosis in pregnancy. The quality of the included trials was assessed. RevMan 5.0.24 software was used for meta-analysis. Results Eight trials involving 1 687 patients were included. The results of meta-analysis showed: no significant difference was found in the effectiveness between the two groups (RR=1.04, 95%CI 1.00 to 1.08, P=0.08); living preparation of lactobacillus had lower recurrence rate and lower premature delivery rate compared with metronidazole (RR=0.16, 95%CI 0.06 to 0.43, P=0.0004; RR=0.56, 95%CI 0.33 to 0.94, P=0.03); no significant differences were found in premature rupture of membrane, puerperal infection, infant of low-birth weight, infant infection, and infant jaundice between the two groups. Conclusion The effectiveness about living preparation of lactobacillus versus metronidazole for bacterial vaginosis in pregnancy is similar, but living preparation of lactobacillus has lower recurrence rate and lower premature delivery rate, the others of effect on pregnant outcome are similar.
Colonoscopy examination is the gold standard for diagnosis and treatment of colon diseases and screening for early cancer. Good quality of bowel preparation, which is also called intestinal cleanliness, is the prerequisite for full visualization of colonic mucosal lesions and their details. In clinic, more intestinal cleansing agents, such as polyethylene glycol and magneium suifate, have bad taste and high dosage, which can not be tolerated by some patients and affect the effect of bowel preparation. The use of oral adjuvant, add adjuvant to intestinal cleansing agents, new low-volume or very low-volume polyethylene glycol-ascorbic acid preparation methods, can reduce the incidence of adverse reactions, such as nausea and vomiting in patients, improve their tolerance, satisfaction and so on. This article reviews the methods of improving the taste and reducing the adverse reactions of intestinal cleansing agents at home and abroad to offer references for clinical practice.