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Status unknownNCT04801277Updated Mar 16, 2021

Efficacy of PC6 Electroacupuncture in the Prevention of Nausea Vomiting in Caesarean Patient Under Spinal Anaesthesia

An interventional study of Electroacupuncture on acupoints vs sham points in Postoperative Nausea and Vomiting, sponsored by Clinical Research Centre, Malaysia. Status unknown at 1 site in Malaysia. Open to female participants aged 18 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-03-16.

Sponsored by Clinical Research Centre, Malaysia · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Mar 2021), so the status shown — last known as Recruiting — may be out of date.

From the registry’s dates

  • Registered 3 months after the study started (first participant enrolled Sep 2020, registered Dec 2020).
Phase
Not applicable
Study type
Interventional
Enrollment
100
Allocation
Randomized
Ages
18 Years to 45 Years
Sex
Female
01

Study summary

To determine the ability of electroacupuncture on PC6 versus sham acupuncture in reducing incidence of intraoperative and postoperative nausea vomiting in parturients who underwent Caesarean delivery under spinal anaesthesia

Read the detailed description

Caesarean rate in most countries are increasing year by year. A report shows that the caesarean section rate for government hospitals in Malaysia was 10.5% in 2000 and 11.0% in 20011 and it rises to 25% of total delivery in Hospital Raja Permaisuri Bainun, Malaysia in year 2018. Nowadays, about 7% of all surgical procedures worldwide are caesarean section and the majority of them are performed with neuraxial blockade, ie epidural anesthesia, spinal anesthesia, or a combined spinal-epidural anesthesia (CSE).

Nausea and vomiting are common intraoperative and postoperative complications in women having caesarean section under neuraxial anesthesia.Compared to the plethora of literatures about PONV, little attention has been paid to nausea vomiting occurring during or after regional anesthesia. These techniques gain increasing attention.

Current literature review indicates a high incidence of IONV during CS under spinal anesthesia up to 80%4. The etiology of intraoperative and postoperative nausea and vomiting (IONV and PONV) is multifactorial. Pregnant women are already likely to suffer from nausea and vomiting because of the pregnancy itself. According to Apfel's score predictive of PONV score that consists of four ascertained risk factors (female, non-smoker, opioid use, previous PONV events or motion sickness), parturients often meet at least two of these criteria with their gender and non-smoker status.

Despite the practice of prescribing antiemetic prophylaxis medication, the incidence of nausea and vomiting in CS patient is still up to 30-50%6. The efficacy of antiemetic drugs is limited and their administration is not free from side effects. Nausea and vomiting not only causes dehydration, electrolyte imbalance and adversely affects wound healing, but also leads to increased wound pain, discomfort, and anxiety among post partum patient. This may further lead to increased medical expenses and extended hospital stay, leaving patient with the overall negative surgical experience. Hence, the idea of multimodal therapy in prophylaxis of IONV and PONV arises.

Non-pharmacological techiniques such as acupuncture, acupressure,and transcutaneous acupoint electrical stimulation of the pericardium 6(PC6) Neiguan point have been studied for the prevention of PONV. The increasing popularity of these modalities is, in part, due to their low cost, simplicity, and in obstetrics, concern about placental transfer and secretion in breast milk of drugs.

It is hypothesized that PC6 electroacupunture stimulation will reduce the incidence of IONV and PONV and reduce the usage of antiemetic drugs in post partum patient.

02

Conditions studied

  • Postoperative Nausea and Vomiting

Keywords

  • Electroacupuncture
  • Nausea vomiting
  • Caesarean Delivery
03

In context

Nausea

822 studies on the registry are indexed under Nausea; 104 are open to participants now.

This study's planned enrollment of 100 is below the median of 115 across 703 interventional studies indexed under Nausea.

Browse Nausea studies →

Lead sponsor

Clinical Research Centre, Malaysia is the lead sponsor of 28 studies on the registry; 5 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Inclusion criteria

  • Parturients (36-42 weeks pregnant) aged 18-45 undergoing planned for Caesarean Section.
  • American Society of Anaesthesiology class II patients only

Exclusion criteria

Exclusion Criteria:

  • Patients with a previous history of PONV or nausea and vomiting in the preceding 24 hours
  • Patients who required emergent surgery where delay is inappropriate and can compromise mother and foetus, e.g. foetal distress, foetal bradycardia, chorioamnionitis, cord prolapse, severe preeclampsia
  • Patients with documented or known history of allergy to granisetron
  • Morbid obesity (BMI>40) as morbid obesity patient will be not be given intrathecal morphine due to increase risk of post operative respiratory depression.
  • Patients using any antiemetic drug including dexamethasone for 24 hours prior to Caesarean section (CS)
  • Patient who had an implanted pacemaker or defibrillator device. (safety of the use of electroacupuncture on these patient is questionable)
  • Patient who received opioids prior to CS (opioid is known to have nausea and vomiting side effect)
  • Patient refusal
  • Severe preeclampsia, gestational diabetes mellitus on treatment, neurological or cardiac disease.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
100 participants (estimated)

Study arms

  • Active comparator
    Acupuncture on PC6 and LI4

    Acupuncture on bilateral acupoints, that are PC6 and LI4. The pericardium meridian PC6 point (Neiguan) is defined as follows. The patient's four fingerbreadths will be placed on the medial aspect of their forearm with the edge of the 4th finger on the wrist crease. This is then subtracted from the width of the interphalangeal joint of her thumb. The point between the tendons of extensor carpi radialis and palmaris longus was the pericardium meridian PC6 point (Neiguan). The large intestine LI4 point (Hegu) located on the dorsum of the hand, between the first and second metacarpal bones, at the midpoint of the second metacarpal bone and close to its radial border.

    Procedure: Electroacupuncture on acupoints vs sham points

  • Sham comparator
    Acupuncture on Sham acupoints

    Acupuncture on bilateral non acupoints. In sham/placebo group, patient will have the acupuncture needles inserted at non-acupoint 2cm radial to PC6 and between 2nd and 3rd metacarpal bone bilaterally, superficial skin piercing (adequate depth to let patient feels needle is inserted)

    Procedure: Electroacupuncture on acupoints vs sham points

Interventions

  • ProcedureElectroacupuncture on acupoints vs sham points

    Randomized double blinded clinical trial

06

What researchers measure

Primary outcomes

  1. Intraoperative nausea vomiting

    Change in incidence

    Time frame: Intraoperative 2 hours

  2. Postoperative nausea vomiting

    Change in incidence

    Time frame: Immediate post operative

  3. Postoperative nausea vomiting

    Change in incidence

    Time frame: 12 hours post operative

  4. Postoperative nausea vomiting

    Change in incidence

    Time frame: 24 hours post operative

07

Study locations

1 of 1 sites recruiting
  • Hospital Raja Permaisuri Bainun Ipoh
    Ipoh, Perak 30450, Malaysia
    • See Yun Chan · Contact · seeyunchan@yahoo.com · +60125700148
    • See Yun Chan · Principal investigator
    • Chek Ning Lee · Sub investigator
    Recruiting
08

References and documents

Publications

  • Macario A, Weinger M, Truong P, Lee M. Which clinical anesthesia outcomes are both common and important to avoid? The perspective of a panel of expert anesthesiologists. Anesth Analg. 1999 May;88(5):1085-91. doi: 10.1097/00000539-199905000-00023. PubMed 10320175 ↗
  • Jelting Y, Klein C, Harlander T, Eberhart L, Roewer N, Kranke P. Preventing nausea and vomiting in women undergoing regional anesthesia for cesarean section: challenges and solutions. Local Reg Anesth. 2017 Aug 9;10:83-90. doi: 10.2147/LRA.S111459. eCollection 2017. PubMed 28860857 ↗
  • Balki M, Carvalho JC. Intraoperative nausea and vomiting during cesarean section under regional anesthesia. Int J Obstet Anesth. 2005 Jul;14(3):230-41. doi: 10.1016/j.ijoa.2004.12.004. PubMed 15935649 ↗
  • Arnberger M, Stadelmann K, Alischer P, Ponert R, Melber A, Greif R. Monitoring of neuromuscular blockade at the P6 acupuncture point reduces the incidence of postoperative nausea and vomiting. Anesthesiology. 2007 Dec;107(6):903-8. doi: 10.1097/01.anes.0000290617.98058.d9. PubMed 18043058 ↗
  • Pierre S, Benais H, Pouymayou J. Apfel's simplified score may favourably predict the risk of postoperative nausea and vomiting. Can J Anaesth. 2002 Mar;49(3):237-42. doi: 10.1007/BF03020521. PubMed 11861340 ↗

Study documents

  • Study protocol · Mar 4, 2020
  • Informed consent form · Mar 4, 2020

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No — Study Methodology

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 16, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04801277
Lead sponsor
Clinical Research Centre, Malaysia
Responsible party
Chan See Yun (Obstetric Anaesthesiologist and acupuncturist, Clinical Research Centre, Malaysia) — Principal investigator
First posted
Mar 16, 2021
Start date
Sep 1, 2020
Primary completion
Mar 31, 2021 (estimated)
Completion
Apr 30, 2021 (estimated)
Last update
Mar 16, 2021

Study contacts

See Yun Chan
Contact
seeyunchan@yahoo.com
+60125700148
Chek Ning Lee
Contact
chekning0606@gmail.com
+60125342845
See Yun Chan
principal investigator · Hospital Raja Permaisuri Bainun Ipoh

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Mar 2021. You cannot join it, but the record below documents what was studied.

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