目的 探讨针刺治疗在防治术后恶心呕吐（PONV）中的作用与疗效。 方法 通过对2012年6月收治的1例全身麻醉下行小脑血肿清除术后出现持续性恶心呕吐症状，后辅以针刺治疗好转的病例报道，就针刺治疗对PONV的穴位选择，刺激方式，介入时间等相关研究进行复习和总结。 结果 患者恶心呕吐症状在选取中脘、足三里（双）、内关（双）穴针刺治疗3次后（30 min/次）明显减少，自诉恶心程度较前缓解，连续针灸6次后呕吐现象得到有效控制。 结论 目前有关针刺治疗PONV的研究越来越多，但尚无统一的治疗标准。
Objective To assess the effect of problem-based learning (PBL) to improve clinical practice skills for clinical students after graduation. Methods Computer retrieval was conducted to search for controlled studies comparing PBL with non-PBL. The quality of the included studies was critically evaluated and data were analyzed. Results A total of 16 articles were included. The results showed that in integrated capabilities, PBL teaching was superior to traditional teaching methods. Whether in self-evaluation or objective evaluation, in terms of legal and ethical aspects of health care, research and presentation skills and ability to solve problem, PBL teaching was superior to non-PBL-learning methods. But in other aspects, it was yet controversial whether PBL-learning was better than non-PBL-learning. Conclusion Problem-based learning could improve clinical practice skills for clinical students after graduation. However, most trials included are of low quality, so large-scale randomized controlled trials of higher quality are needed to confirm this.