|
| First author (year) | Intervention | Intervention parameters | Intervention dose | Main outcome | Study design |
|
| Li et al. (2017) [21] | EG : EA + routine treatment; CG: routine treatment. | Acupoints: bilateral Neiguan (PC6) and Zusanli (ST36), mode: dense-disperse wave; frequency: 20/100 Hz; intensity (mA) : strong but comfortable. 7548 | 24 hours prior to the surgery, once for 30 min. | TFF, PONV | RCT |
| Praveena et al. (2016) [22] | EG : EA + routine treatment, CG: routine treatment. | acupoints: bilateral Hegu (LI4) and Neiguan (PC6), mode: continuous wave, frequency: 2 Hz; intensity (mA): Level 1. | Before the start of surgery until the end of surgery. | PONV | RCT |
| Bai et al. (2012) [23] | EG : EA + Tropisetron (5 mg, intravenous injection after anesthesia induction) + routine treatment; CG : Tropisetron (5 mg, intravenous injection after anesthesia induction) + routine treatment. | Acupoints: bilateral Neiguan (PC6) and Zusanli (ST36), Shangjuxu (ST37), Zhongwan (RN12), Tianshu (ST25), mode: unreported; frequency: 2 Hz; intensity (mA): unclear. | At hour 5, 23, and 27 after surgery, 30 min/once. | PONV, TFF, MTL, GAS | RCT |
| Chen et al. (2014) [24] | EG : EA + routine treatment; CG: routine treatment | Acupoints: bilateral Liangqiu (ST34) and Zusanli (ST36), mode: continuous wave; frequency: 2 Hz; intensity (mA): maximum tolerable. | 30 minutes prior to the surgery until the end of surgery. | PHi, PgCO2 | RCT |
| Jin and Jing (2015) [25] | EG : EA + routine treatment; CG: routine treatment | Acupoints: bilateral Zusanli (ST36); mode: unreported; frequency and intensity (mA): unclear. | At hour 5 after surgery, twice a day, until time to first flatus. | TBS, TFF, TFD | RCT |
| Li et al. (2019) [26] | EG : EA + routine treatment; CG: routine treatment. | Acupoints: bilateral Neiguan (PC6), Xuehai (SP10), Hegu (LI4) and Zusanli (ST36), mode: dense-disperse wave; frequency: 2/10/50/100 Hz; intensity (mA): unclear. | 24 hours prior to the surgery, once for 30 min. | TFF, PONV, | RCT |
| Lu et al. (2010) [27] | EG : EA + Tropisetron (5 mg, intravenous injection prior to the end of surgery) + routine treatment; CG : Tropisetron (5 mg, intravenous injection prior to the end of surgery) + routine treatment. | Acupoints: bilateral Neiguan (PC6) and Zusanli (ST36), Hegu (LI4), Sanyinjiao (SP6), Taichong (LR3), mode: dense-disperse wave; frequency: 2/10 Hz; intensity (mA): maximum tolerable. | At hours 1, 5, and 23 after surgery, 30 min/once. | PONV, number of TFF more than 72 h | RCT |
| Toronui (2020) [28] | EG : EA + routine treatment; CG: routine treatment. | Acupoints: bilateral Zusanli (ST36), frequency: 2/10 Hz. | Prior to the surgery, once for 15 min. | TBS, TFF, TFD, PONV | RCT |
| Wang et al. (2018) [29] | EG : EA + Tropisetron (5 mg, intravenous injection prior to the end of surgery) +routine treatment; CG : Tropisetron (5 mg, intravenous injection prior to the end of surgery) + routine treatment. | Acupoints: bilateral Neiguan (PC6) and Zusanli (ST36), mode: dense-disperse wave; frequency: 2 Hz; intensity (mA): maximum tolerable. | 30 minutes prior to the surgery, once for 30 min. | PONV, TFF | RCT |
| Wang et al. (2018) [30] | EG : EA + Tropisetron (5 mg, intravenous injection prior to the end of surgery) + routine treatment; CG : Tropisetron (6 mg, intravenous injection prior to the end of surgery) + routine treatment. | Acupoints: bilateral Neiguan (PC6) and Zusanli (ST36), mode: dense-disperse wave; frequency: 2 Hz; intensity (mA): maximum tolerable. | 24 hours prior to the surgery, once for 30 min. | TFF, PONV | RCT |
| Wang et al. (2011) [31] | EG : EA + routine treatment; CG: routine treatment. | Acupoints: bilateral Zusanli (ST36), Neiguan (PC6), mode: continuous wave; frequency: 2 Hz; intensity (mA): maximum tolerable. | Prior to the surgery, once for 15 min. | PONV, MTL, VIP, number of TFF more than 72 h | RCT |
| Wang and Xi (2017) [32] | EG : EA + routine treatment; CG : Ginger partitioned moxibustion on umbilicus + routine treatment. | Acupoints: bilateral Liangmen (ST21) and Zusanli (ST36), Shangjuxu (ST37), Zhongwan (RN12), Tianshu (ST25), mode: continuous wave. | After surgery, once for 30 min, once a day, for 3 d. | TBS, TFF | RCT |
| Xi and Wang (2015) [33] | EG : EA + routine treatment; CG1 : Ginger partitioned moxibustion on umbilicus + routine treatment | Acupoints: bilateral Liangmen (ST21) and Zusanli (ST36), Shangjuxu (ST37), Zhongwan (RN12), Tianshu (ST25), mode: continuous wave; intensity (mA): maximum tolerable. | After surgery, once for 30 min, once a day, for 3 d. | TBS, TFF, MTL, GAS, | |
| VIP | RCT | | | | |
| Yang et al. (2012) [34] | EG : EA + routine treatment; CG: routine treatment. | Acupoints: bilateral Sanyinjiao (SP6) and Zusanli (ST36), mode: dense-disperse wave; frequency: 2/100 Hz; intensity (mA): maximum tolerable. | 30 minutes prior to the surgery until the end of surgery. | TFF | RCT |
| Huang et al. (2021) [35] | EG : EA + routine treatment; CG: routine treatment. | Acupoints: bilateral Neiguan (PC6), mode: dense-disperse wave; frequency: 3/20 Hz; intensity (mA): unclear. | Prior to the surgery, once for 20 min. | PONV, MTL, GAS | RCT |
| Ye and Huang (2019) [36] | EG : EA + routine treatment; CG: routine treatment. | Acupoints: bilateral Neiguan (PC6), mode: unreported, frequency: 3/21 Hz; intensity (mA): comfortable. | Prior to the surgery, once for 20 min. | PONV | RCT |
| Yu and Ning (2016) [37] | EG : EA + Tropisetron (2 mg, intravenous injection prior to the end of surgery) + routine treatment; CG1 : Tropisetron (2 mg, intravenous injection prior to the end of surgery) + routine treatment. | Acupoints: bilateral Neiguan (PC6), and Hegu (LI4), mode: dense-disperse wave; frequency: 20/100 Hz; intensity (mA): 10 mA. | Prior to the surgery, once for 30 min. | PONV | RCT |
| Zhang et al. (2013) [38] | EG : EA + routine treatment; CG: routine treatment. | Acupoints: bilateral Liangqiu (ST34) and Zusanli (ST36), mode: continuous wave; frequency: 2 Hz; intensity (mA): maximum tolerable. | 30 minutes prior to the surgery until the end of surgery. | pHi, PgCO2 | RCT |
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