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find Author "谢艳" 7 results
  • 流动对兔动脉缩窄区域内皮细胞形态的影响

    目的 在体考察不同流场环境中血管内皮细胞形态学和完整性的改变,及其与流场的空间相关性. 方法 将10只大耳白兔分成动脉缩窄组和对照组,建立兔颈总动脉环缩狭窄,使用脉冲多普勒超声系统考察缩窄下游的湍流流场及对侧血管的层流流场;用扫描电子显微镜探测内皮细胞(ECs)计数、形状指数和定向角等形态学指标. 结果 缩窄下游的湍流流场中ECs大量脱落,细胞下基质和胶原组织暴露,ECs变形,无明显定向性.越远离缩窄,ECs的残留率越高,细胞也逐渐重新建立了定向性. 结论 缩窄血管下游的湍流流动是导致血管ECs形态结构异常和损伤的重要原因.

    Release date:2016-08-30 06:30 Export PDF Favorites Scan
  • APPLICATION OF GENIPIN FOR MODIFICATION OF NATURAL BIOMATERIALS AS A CROSSLINKING AGENT

    Objective To review the application of genipin for the modification of natural biomaterials as a crosslinking agent and progress in research. Methods Domestic and foreign literature on application of genipin for the modification of natural biomaterials as a crosslinking agent was thoroughly reviewed. Results Genipin is an effective natural crosslinking agent with a very low level of cytotoxicity compared with conventional synthetic crosslinking agents. Tissues fixed with genipin can maintain a high level of stability as well as resistance to enzymatic degradation. Conclusion Genipin is a promising substitute for conventional synthetic crosslinking agents, which has offered an alternative for modification of natural biomaterials for tissue engineering.

    Release date:2016-08-31 04:07 Export PDF Favorites Scan
  • Comparison of the Clinical Efficacy between Endoscopic Surgery and the Surgery Combined with Plasma Low-temperature Radiofrequency in Treating Papilloma of External Auditory Canal

    目的 观察独用内镜下手术以及联合等离子低温射频治疗外耳道乳头状瘤的疗效。 方法 2006年7月-2010年7月,随机将收治的45例外耳道乳头状瘤患者(150只耳)分组,比较独用内镜下手术组(A组)以及联合等离子低温射频组(B组)治疗外耳道乳头状瘤的疗效。 结果 患者均术后成功随访1~3年,48只患耳无复发及恶变,2只患耳3个月后复发。 结论 内镜下手术联合等离子低温射频治疗外耳道乳头状瘤具有微创,手术彻底有效,防止复发的优点,值得临床广泛应用。

    Release date:2016-09-08 09:17 Export PDF Favorites Scan
  • Clinical Observation of Balloon Sinuplasty for the Treatment of Chronic Sphenoid Sinusitis

    ObjectiveTo evaluate the safety and effect of balloon sinuplasty for the treatment of chronic sphenoid sinusitis. MethodsFrom November 2011 to March 2013, 17 patients received balloon catheter dilation of sinus ostia. All the patients were followed up for 12 months postoperatively and the therapeutic effect was evaluated. ResultsAt the end of the following-up, the clinical symptoms of all the patients got relieved. Through nasal endoscopic examination, we found that apertura sphenoidalis developed well in 15 cases, sinus mucosa edema in one case, sinus stenosis in one case, and no postoperative complications occurred. The mean visual analogue scale (VAS) scores were 5.21±1.51 preoperatively and 3.23±1.34, 3.35±1.41, 3.58±1.46 at 3, 6 and 12 months postoperatively. The mean sino-nasal outcome test-20 scores were 12.50±1.96 preoperatively and 7.30±1.79, 7.64±1.93, 7.77±2.02 at 3, 6, 12 months postoperatively. The mean Lund-Kennedy endoscopic mucosal morphology scores were 3.51±1.47 preoperatively and 1.77±1.11, 1.88±1.01, 2.00±0.97 at 3, 6, 12 months postoperatively. The mean CT scores were 1.57±1.06 preoperatively and 0.85±0.62 at 12 months postoperatively. Compared with the preoperative scores, the postoperative scores were significantly different. ConclusionBalloon sinuplasty is worthy of clinical application for its advantages of good clinical effect and safety.

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  • Analysis of Prognostic Factors for Short-term Outcome in Patients with Hepatitis B Virus-related Acute-on-chronic Liver Failure Treated with Artificial Liver

    ObjectiveTo learn the outcomes of hepatitis B virus (HBV)-related acute-on-chronic liver failure (ACLF) cases after artificial liver support system (ALSS) treatment and the relevant factors correlated with the clinical outcomes. MethodsIn the period from January 2011 to June 2014, 321 patients with HBV-ACLF were admitted to West China Hospital. The clinical data at baseline, before and after treatment were analyzed by univariate and multivariate logistic regressions to identify the independent risk factors correlated with 30-day outcomes. ResultsOf all the 321 patients, 233 survived and 88 died by the end of a 30-day observation. The univariate analysis identified that the incidences of cirrhosis, hepatorenal syndrome and peritonitis in the death group were significantly higher (P<0.05). The model for end-stage liver disease values, white blood cells (WBC), blood ammonia, creatinine and total bilirubin (TBIL) at different stages in the death group were significantly higher than those in the survival group (P<0.05). In the death group, the HBV-DNA, TBIL decrease after triple ALSS treatments, baseline prothrombin time activity (PTA) and PTA level after triple ALSS treatments were significantly lower (P<0.05). The multivariate logistic regression indicated that WBC (OR=2.337, P<0.001) and TBIL level after triple ALSS treatments (OR=4.935, P<0.001) were independent predicting factors for death within 30 days after ALSS treatment; HBV-DNA (OR=0.403, P<0.001), the decrease of TBIL after triple ALSS treatments (OR=0.447, P<0.001) and PTA level after triple ALSS treatments (OR=0.332, P<0.001) were protecting factors for the 30-day prognosis. ConclusionThese five factors including WBC, HBV-DNA, PTA, TBIL and TBIL decrease after triple ALSS treatments influence the short-term prognosis for HBV-ACLF patients, which are valuable for decision making in clinical practices.

    Release date:2016-10-02 04:54 Export PDF Favorites Scan
  • Effect of Narrow Nasal Cavity on the Obstructive Sleep Apnea Hypopnea Syndrome

    【摘要】 目的 探讨手术治疗鼻气道狭窄对阻塞性睡眠呼吸暂停低通气综合征(obstructive sleep apnea hypopnea syndrome,OSAHS)患者的疗效。 方法 2008年2月-2010年2月,对300例OSAHS患者行鼻内镜鼻腔手术治疗,比较患者手术前后打鼾程度、嗜睡程度和鼾声评分。 结果 手术治疗鼻气道狭窄后患者嗜睡评分及鼾声评分平均值均小于术前,差异有统计学意义(Plt;0.05),手术有效率88.67%,手术并发症发生率0.67%,为鼻中隔穿孔、鼻腔粘连。 结论 手术治疗鼻气道狭窄是治疗因鼻气道狭窄所致OSAHS的一种有效方法。【Abstract】 Objective To explore the therapeutic effect of the surgery of narrow nasal cavity on the obstructive sleep apnea hypopnea syndrome (OSAHS). Methods A total of 300 patients with OSAHS from February 2008 to February 2010 underwent the surgery of narrow nasal cavity and the pre- and post-operative Epworth sleepiness scale and snore scale were analyzed. Results After the surgery of narrow nasal cavity, snore degree, somnolence scale and snore scale decreased compared with those before the operation (Plt;0.05). The effective rate of the surgery was 88.67% and the rate of operative complication was 0.67%. Conclusion The surgery of narrow nasal cavity is effective for the patients with OSAHS caused by narrow nasal cauity.

    Release date:2016-09-08 09:51 Export PDF Favorites Scan
  • Evidence summary of the best evidence of preoperative prehabilitation for patients undergoing total joint replacement/total knee replacement under enhanced recovery after surgery

    Objective To summarize the best evidence of preoperative prehabilitation for patients undergoing total joint replacement/total knee replacement (THA/TKA), and to provide reference for clinical work in the context of enhanced recovery after surgery (ERAS), in order to speed up the postoperative rehabilitation process of patients undergoing THA/TKA. Methods Up To Date, BMJ Practice, National Institute for Health and Care Excellence, Cochrane Library, JBI Evidence-Based Health Care Center Database, Guidelines International Network, www.guide.medlive.cn, PubMed, China National Knowledge Infrastructure, VIPdata, and WanFang Data were searched by computer for literature about preoperative prehabilitation of THA/TKA patients. The retrieval time was from the establishment of the databases to May 31, 2022. The quality of the included literature was evaluated by 2 researchers with evidence-based training. Results A total of 11 publications were included, including 1 guideline, 3 expert consensuses, 3 systematic reviews, and 4 randomized controlled trials, covering 6 aspects of multidisciplinary team, patient education, drug management, nutritional guidance, index control, and exercise intervention. A total of 16 best evidences of preoperative prehabilitation in patients with THA/TKA were extracted, including 9 A-level recommendations and 7 B-level recommendations. Conclusions THA/TKA prehabilitation includes various comprehensive interventions. With the development of ERAS in orthopaedics, the best evidence extracted can be used by clinical staff for THA/TKA. Evidence-based evidence is provided for patients to formulate prehabilitation programs.

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