Yulin 2019.

Study name	Efficacy and safety of electroacupuncture combined with tropisetron in treating carboprost tromethamine–induced nausea and vomiting during cesarean section:a prospective, randomised, controlled clinical trial (ChiCTR1900021396)
Methods	RCT
Participants	Inclusion criteria: Women aged 22‐40 years, ASA grade I or II, no history of serious heart, lung, kidney and digestive system diseases, no history of diabetes, no history of nausea, vomiting, no history of carsickness, no experience of acupuncture, no contraindication of intraspinal block CS patients. Exclusion criteria: Women with poor anaesthetic effect and changing general anaesthesia.
Interventions	Interventions 1: Acupuncture + tropisetron Intervention 2; Acupuncture + normal saline Intervention 3 Tropisetron + false acupuncture Comparator: Normal saline + false acupuncture
Outcomes	Nausea, vomiting etc.
Starting date	1 October 2015
Contact information	Study leader: Chang Yulin email: 17631695925@163.com. Also Yu Lili ‐ email: 18713057030@163.com
Notes	Setting: Cangzhou Central Hospital, Cangzhou, Hebei, China Tropisetron is a serotonin 5‐HT3 receptor antagonist Trial registration: ChiCTR1900021396 Previous study name: ChiCTR1900021396 2019 Web link: Http://www.who.int/trialsearch/Trial2.aspx?TrialID=ChiCTR1900021396 Gill's webline: http://www.chictr.org.cn/com/25/hvshowproject.aspx?id=17613 (last accessed 8 July 2020)

ASA: American Society of Anaesthesiologists physical status classification; CS: caesarean section;IV: intravenous;RCT: randomised controlled trial; PONV: postoperative nausea and vomiting;PPH: postpartum haemorrhage;vs: versus