To explain how to treat common gastric diseases like chronic gastritis, peptic ulcer, functional dyspepsia and gastric oesophageal reflux disease (GORD) based on evidence-based medicine. Through this paper, we try to help readers find and use clinical evidence to solve clinical problems.
Objective To investigate the current status of randomized controlled trials (RCTs) and clinical controlled trials (CCTs) on pressure sore in China. Methods We searched Chinese Journal of Nursing, Chinese Journal of Practical Nursing and Journal of Nurses Training in CNKI and VIP (January 2000 to December 2005) for Chinese articles on pressure sore, using "pressure sore", "bed sore", "nursing", "treatment", "prevention", "evaluation" and "management" as search terms. The retrieved articles were summarized. Results We identified 16 reports (10 RCTs and 6 CCTs). The studies were judged to be of low quality.There was one study on the evaluation, two on the prevention, and 13 on the treatment of pressure sores. Conclusion The current studies on pressure sore in China are focusing on treatment. Randomized controlled trials of large sample size of pressure sore are needed to improve nursing quality.
截至2001年10月,有关治疗急性心房纤颤的临床证据如下:①尚未发现急性心房纤颤转律前使用阿司匹林、肝素或华法林预防血栓的RCT.②未发现有关对急性心房纤颤患者使用直流电复律的RCT.让急性心房纤颤和血流动力学障碍的患者作直流电复律的RCT可能有悖于伦理.③ 3个RCT发现,对于急性心房纤颤的患者使用地高辛和安慰剂转律之间没有明显差异.④两个RCT发现,与安慰剂相比,使用地高辛可在短期内明显降低急性心房纤颤患者的心室率.⑤ 1个RCT发现,与安慰剂相比,静脉使用硫氮卓酮(一种钙通道阻滞剂)能明显降低急性心房纤颤患者的心率.⑥ 1个RCT发现,与地高辛相比,静脉使用硫氮卓酮能在5 min内明显降低急性心房纤颤和心房扑动患者的心率.⑦有1个小样本RCT显示,与安慰剂相比,静脉使用噻吗洛尔(一种β受体阻滞剂)可在20 min内明显降低心室率,同时发现其对心房纤颤发作持续时间不详的患者转律的增加不显著.⑧两个RCT发现,与安慰剂相比,静脉使用维拉帕米(一种钙通道阻滞剂)可明显减慢心房纤颤和心房扑动患者的心率.⑨ 1个RCT发现,静脉使用维拉帕米和静脉使用硫氮卓酮相比,对于心房纤颤和心房扑动患者心率的控制以及收缩功能的影响并无显著差异,但维拉帕米可致一些人出现低血压.
Objective To find the most effective treatment for a patient with difficult selective biliary cannulation (DSBC) during endoscopic retrograde cholangiopancreatography (ERCP) by EBM practice. Methods Evidence was retrieved from The Cochrane Library (Issue 1, 2010), ACP online, NGC (1998 to June 2010), PubMed (1950 to June 2010), and CBM (1994 to June 2010). The collected evidence was then graded. Results After preliminary research, we identified 18 relevant articles. The evidence showed that pre-cutting technique could increase cannulation success rates in DSBC and was safe, effective, and time-saving for an experienced endoscopist. Pancreatic duct occupation was easier to perform than pre-cutting technique and could also increase selective cannulation success rates in DSBC. According to the evidence, together with endoscopist’s experience and the preference of the patient and his family, needle-knife precut papillotomy was performed. Successful selective biliary cannulation was accomplished after pre-cutting. Conclusion The current evidence suggests that pre-cutting technique and pancreatic duct occupation could increase selective cannulation success rates in DSBC. Patients’ condition and endoscopist’s experience should be considered properly before the operation.
Objective To review the systemat ic reviews/meta-analyses involving Traditional Chinese Medicine (TCM ) therapy for menopausal syndrome, so as to offer clinical evidence about the safety and efficacy of TCM. Methods We searched The Cochrane Library (Issue 4, 2006), MEDLINE (1991 to 2006), Ovid (1990 to 2006), CBM(1990 to 2006), CNKI(1989 to 2006) and VIP(1979 to 2006). The search terms of "menopause OR climacteric" and "traditional Chinese medicine OR herb OR plant" and "systematic review OR evidence-based medicine OR Meta-analysis OR Meta-analysis" were used to identify systematic reviews or meta-analyses on TCM for menopause syndrome. Results A total of 6 systematic reviews or meta-analyses were identified. Two of these were in Chinese databases and four were in the foreign language databases. The 6 articles were reviewed and summarized. Conclusion TCM has a effect in the treatment of menopausal syndrome with a good safety profile. However, due to the generally low quality of included studies, the evidence available is not b enough to evaluate the efficacy and safety of TCM for menopausal syndrome.More rigorously designed and strictly executed trials are needed.
截至2002年8月,有关妊娠子痫及高血压的临床证据如下:预防: ①抗血小板药物:1个系统评价发现,对可能发生先兆子痫的孕妇使用抗血小板药物(主要是阿司匹林)与使用安慰剂或不治疗相比,在降低发生先兆子痫的危险、减少胎儿死亡和早产方面有统计学意义,在其他重要结局上无统计学意义.随后的1个小样本随机对照试验(RCT)也得出相似的结论.该系统评价还发现,无证据表明使用阿司匹林会比安慰剂增加孕妇或胎儿出血的危险. ②补钙(用于高危孕妇或钙摄入不足的孕妇):1个系统评价发现,给孕妇补钙(2 g/d)与使用安慰剂相比,在降低先兆子痫的发病危险及减少胎儿出生时体重不足 2 500 g方面有统计学意义,但对降低死产、住院期间围产儿死亡、减少剖腹产或早产没有统计学意义. ③补镁 : 1个系统评价发现,尚无充足证据证明补镁对有发生先兆子痫或其并发症危险的孕妇有效. ④其它药物干预:两个RCT比较了使用阿替洛伟或硝酸甘油与安慰剂,但由于纳入的病例数太少不能得出可靠结论. ⑤限制盐的摄入: 1个系统评价的有限证据表明,低盐饮食与正常饮食相比,在降低孕妇先兆子痫的发生率方面无统计学差异. ⑥ Vit C和Vit E:在高危孕妇中进行的1个RCT中,有限的证据显示,使用Vit C和Vit E与安慰剂相比,前者可明显减少先兆子痫的发生率,但是,我们不能对其疗效得出可靠结论,也无足够证据证明Vit C和Vit E对其它临床指标有影响. ⑦夜间服用月见草油或鱼油:我们找到6个关于服用月见草油和鱼油的RCT,但其样本量都太小,不能得出可靠的结论.治疗: ①积极治疗与姑息疗法对首发严重先兆子痫孕妇的疗效比较:纳入两个小样本RCT的1篇系统评价发现,无证据表明积极治疗对严重先兆子痫孕妇比姑息疗法更能减少死产率或围产儿死亡率.相反,与姑息疗法相比,积极治疗增加了新生儿进入重症监护病房的比例和发生坏死性小肠结肠炎及呼吸窘迫的危险.与姑息疗法相比,无充足证据表明积极治疗对母亲有效. ②降压药用于治疗轻、中度高血压:两个系统评价发现,使用降压药与安慰剂、不用降压药或另外一种降压药比较,前者能明显减少发展为严重高血压的危险,但是对先兆子痫和围产儿死亡无明显效果.该系统评价发现,在妊娠期使用血管紧张素转换酶抑制剂与胎儿发生肾衰有关,还发现使用β受体阻滞剂会增加孕龄过小的危险. ③降压药用于治疗妊娠期重度高血压(尽管在药物的最佳选择方案上尚无足够的证据):在患有孕期重度高血压需要立即采取治疗的孕妇中做的1个系统评价和1个RCT中,无证据表明用不同的降压药控制血压在疗效上有差异.由于这些研究的样本量太小,尚不能得出关于不同药物之间相互关系的进一步结论. ④抗氧化剂用于治疗严重的先兆子痫:1个RCT发现,无足够证据表明,在治疗严重先兆子痫的疗效方面,Vit E、Vit C和别嘌呤醇联用与安慰剂相比有差异. ⑤卧床休息对出现蛋白尿的孕期高血压患者的作用:1个系统评价发现,无足够证据表明卧床休息与常规住院活动相比,前者对出现蛋白尿的孕期高血压患者更有效. ⑥卧床休息/住院治疗:我们没有找到关于住院、卧床休息或日间观察与门诊观察或住院但不限制活动相比较的充足证据. ⑦严重先兆子痫患者无痛分娩麻醉方式的选择:1个RCT发现,严重先兆子痫患者进行无痛分娩时,与静脉麻醉相比,硬膜外麻醉能明显降低平均疼痛指数,但这种差异的临床重要性不清楚. ⑧无蛋白尿的妊娠高血压患者的住院治疗:1个系统评价发现,住院治疗与门诊治疗相比,两者在主要临床结局上无统计学差异. ⑨硫酸镁用于治疗子痫(其疗效优于其它抗惊厥药):多个系统评价发现,对于子痫患者,硫酸镁比较苯妥英钠、地西泮或抗自主神经合剂(冬眠合剂)能明显减少子痫的进一步发作.所有系统评价都显示,使用硫酸镁有降低孕产妇死亡率的趋势,尽管其差异没有统计学意义. ⑩扩张血容量用于治疗严重先兆子痫:1个系统评价发现,无足够证据表明是否扩容治疗对严重先兆子痫患者在疗效上有差异.B11严重先兆子痫患者预防性使用硫酸镁:1个系统评价和1个大样本RCT发现,对于严重先兆子痫患者,与使用安慰剂相比,预防性给予硫酸镁可以使发生子痫的危险减半.但是这些试验中无证据表明,患有严重先兆子痫的孕妇使用硫酸镁和安慰剂,其胎儿在死产率或围产期死亡率方面有统计学差异.据报道,有1/4的孕妇会出现轻微的不良反应,主要是面部潮红. B12严重先兆子痫患者预防性使用地西泮:1个系统评价发现,无足够证据表明,在严重先兆子痫的孕妇中使用地西泮与不用抗惊厥药物治疗有差异.
This article reviews the progress, problems and future development of evidence-based neurology; introduces sources of clinical evidence and evidence-based recommendations on some common neurological disorders from the Quality Standards Subcommittee of the American Academy of Neurology. It promotes high quality clinical research to provide good evidence and the use of current best evidence in patient care.
现有治疗排卵功能障碍性不孕的临床证据如下,①克罗米酚.1个系统评价结果表明,对不规则排卵妇女,克罗米酚与安慰剂相比,明显提高了妊娠率.另外4个克罗米酚和他莫昔芬的研究表明,这两种药物对排卵率和妊娠率的影响无统计学差异.1个随机对照试验(RCT)表明,6个月疗程的克罗米酚加二甲双胍比单用克罗米酚可明显提高妊娠率.②环芬尼:1个RCT表明,环芬尼与安慰剂相比,对妊娠率的影响无统计学差异.③促性腺激素(HMG):1个系统评价表明,HMG治疗与尿促卵泡素(urofollitropin)治疗相比,两者妊娠率无统计学差异.2个RCT表明,重组的促滤泡素和尿促卵泡素治疗相比,两者的持续妊娠率和活产率无统计学差异.以往的研究发现,虽然仅限于那些没有配合使用GnRHa的妇女,但HMG与尿促卵泡素治疗相比,发生卵巢过度刺激综合征的危险性较小.观察性研究证据表明,促性腺激素使用可能使卵巢非侵袭性肿瘤发病及多胎妊娠发生增加.④腹腔镜下卵巢打孔:1个系统评价和其后的1个小样本RCT表明,促性腺激素治疗和卵巢打孔治疗相比,对妊娠率影响的无统计学差异,但卵巢打孔术后多胎妊娠的发生率明显较低.促性腺激素脉冲疗法:有1个系统评价结果,但没有发现促性腺激素脉冲疗法有效.