目的 探讨经皮穴位电刺激（transcutaneous electrical acupoint stimulation，TEAS）手环对于日间宫腔镜手术患者术后恶心呕吐（postoperative nausea and vomiting，PONV）的预防效果。 方法 选取2024年5月至2025年8月在医院行日间宫腔镜手术的患者250例，随机分为观察组和对照组，每组各125例。观察组从术前30 min开始佩戴TEAS手环，持续刺激单侧内关穴，6 h后取下。对照组同样佩戴TEAS手环，但不进行电刺激。术后分别在麻醉恢复室（PACU）即时和6、24、48 h进行观察随访，记录两组PONV的发生情况及严重程度、疼痛评分、首次肛门排气时间、补救性止吐药使用情况及TEAS相关不良反应。 结果 与对照组相比，观察组术后48 h内PONV总发生率显著降低（32.77% vs. 51.24%，P < 0.01），该优势主要体现在术后6 h内，此阶段观察组PONV发生率及严重程度显著低于对照组（P < 0.01），6 h之后两组差异无统计学意义（P > 0.05）。观察组术后离开PACU时至6 h的呕吐发生率低于对照组（P < 0.05），其余时间段组间差异无统计学意义（P > 0.05）。观察组术后首次肛门排气时间较对照组缩短（P < 0.01）。两组患者术后各时间段NRS疼痛评分和术后补救性止吐药物使用率比较，差异无统计学意义（P > 0.05）。研究期间，两组患者均未发生TEAS相关的严重不良反应。 结论 可穿戴TEAS手环可以安全有效地预防日间宫腔镜手术患者PONV，缩短术后首次肛门排气时间，有助于术后快速康复，在日间手术中具有较好的应用前景。

Objective To evaluate the efficacy of transcutaneous electrical acupoint stimulation（TEAS） wristband on postoperative nausea and vomiting（PONV） in ambulatory hysteroscopic surgery patients. Methods A total of 250 patients who underwent ambulatory hysteroscopic surgery at our hospital from May 2024 to August 2025 were randomly divided into an observation group and a control group. In the observation group， a TEAS wristband was applied 30 minutes before surgery to deliver continuous stimulation at the unilateral Nei-guan acupoint， and removed after 6 h. The control group wore an identical TEAS wristband but received no electrical stimulation. Follow-up assessments were performed in the post-anesthesia care unit （PACU）， and at 6， 24， and 48 h postoperatively. The incidence and severity of PONV， pain scores， time to first flatus， and TEAS-related adverse reactions were recorded in both groups. Results Compared with the control group， the total incidence of PONV within 48 h postoperatively was significantly lower in the observation group （32.77% vs. 51.24%， P < 0.01）. This beneficial effect was most prominent within the first 6 h postoperatively， during which both the incidence and severity of PONV in the observation group were significantly reduced compared with the control group （P < 0.01）. No significant differences in the incidence and severity of PONV were noted between the two groups after 6 h postoperatively （P > 0.05）. The incidence of vomiting in the observation group was significantly lower than that in the control group during the period from PACU discharge to 6 h postoperatively （P < 0.05）， while no significant intergroup differences were found in other time periods （P > 0.05）. The time to first flatus in the observation group was significantly shorter than that in the control group （P < 0.01）. There were no significant differences in NRS pain scores at various postoperative time points or the usage rate of rescue antiemetic medications between the two groups （P > 0.05）. No serious TEAS-related adverse events occurred during the study period. Conclusion TEAS wristbands can safely and effectively prevent PONV in patients undergoing ambulatory hysteroscopic surgery， shorten the time to first postoperative flatus， and promote rapid postoperative recovery. These findings support the favorable application prospects of TEAS wristbands in ambulatory surgical settings.