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Breast NeoplasmsNCT03705026

Relationship Between Genetic Polymorphism and Postoperative Nausea and Vomiting in Chinese Han Population

An observational study of Breast Neoplasms and Anesthesia, General, run by Fujian Medical University Union Hospital.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Postoperative nausea and vomiting ( PONV ) is one of the common complications after general anesthesia while genetic factors may play an important role in Postoperative nausea and vomiting. Read more about this study

Who is it for?
Ages 18 to 80 years, women only
Conditions the study is for
Breast Neoplasms, Anesthesia, General
How many people
568 participants
Where
No sites listed yet
Study dates
1 Sep 2013to 31 Jan 2020
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 80 years
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Study population: Han population who were admitted to department of breast surgery, Fujian Medical University Union Hospital.

Who may be able to join

  • Undergoing breast surgery with general anesthesia
  • American Society of Anesthesiologists Physical Status Classifications 1-2
  • No history of smoking
  • body mass index (BMI) <35 kg/m2

Who cannot join

  • Declined to participate
  • Had used antiemetics, steroids, H2 antagonists, anticholinergics, antihistamines, butyrophenones, phenothiazines, metoclopramide or opioids within 24 hours
  • Gastroesophageal reflux, gastrointestinal obstruction or ulcer, vestibular or hearing dysfunction
  • Liver impairment, renal impairment, psychiatric disorder, chronic pain
  • Pregnant and lactating patients
  • Requiring postoperative patient-controlled analgesia
Show all 9Show fewer
  • Requiring prophylactic use of antiemetics
  • Allergic to drugs related in the study
  • Receiving chemotherapy within one week before surgery

About this study

Official title: Relationship Between Genetic Polymorphism and Postoperative Nausea and Vomiting Undergoing Breast Surgery With General Anesthesia in Chinese Han Population

Postoperative nausea and vomiting ( PONV ) is one of the common complications after general anesthesia while genetic factors may play an important role in Postoperative nausea and vomiting. In this study, the investigators investigated the relationship between gene polymorphism ( such as single nucleotide polymorphism ) of the gene HTR3A ( 5-hydroxytryptamine receptor 3A ), HTR3B ( 5-hydroxytryptamine receptor 3B ), HTR3C ( 5-hydroxytryptamine receptor 3C ) and TACR1 ( tachykinin receptor 1 ) etc. with nausea and vomiting after general anesthesia. Simultaneously, the investigators explored the influencing factors of nausea and vomiting.

Read the detailed description

Materials and methods:

Demographic data and risk factors responsible for PONV, including the history of PONV and motion sickness, were collected preoperatively by interviewing participants the day before anesthesia.

All study subjects received a standardized anesthesia regimen. General anesthesia was induced by midazolam 0.04 mg/kg, propofol 1.5 mg/kg, sufentanil 0.4 μg/kg, and cisatracurium 0.2 mg/kg (to facilitate tracheal intubation) given intravenously.Participants' lungs were ventilated with 50% oxygen in air.

During general anesthesia, concentration of sevoflurane maintained 1.0% to 3.0% at the discretion of anesthetist who was not involved in the study. General anesthesia also uses propofol 1 mg kg-1 h-1 and sufentanil 0.1 μg kg-1 h-1 by continuous intravenous infusion. An Entropy index monitor was used to maintain the appropriate anesthesia depth by 40-60. Participants received a repeated bolus of sufentanil 0.1 μg/kg or cisatracurium intravenously on demand.

After surgery the investigators recorded the data such as Anesthesia duration, doses of sufentanil and propofol and so on.

At the end of surgery and after returning to the ward, flurbiprofen axetil 50 mg injection i.v. was administered as an analgesic therapy, respectively. Cholinesterase inhibitor-based neuromuscular reversal drugs and vitamine B6 were not administered after surgery. Bucinnazine hydrochloride 100 mg intramuscular injection (i.m.) as a rescue medication was administered to any participant whose visual analogue scale/score (VAS) was > 3.

Ondansetron was given intravenously to the participants if necessary or requested . Unaware of the genotypes of the subjects, the investigators collected the participants' data including nausea, vomiting and pain.

Keywords
postoperative nausea and vomiting, general anesthesia, breast surgery, single nucleotide polymorphism
Medical subject headings
Breast Neoplasms, Postoperative Nausea and Vomiting

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Whether the participants occur nausea or not

    Nausea was defined as a feeling of wanting to throw up or about to throw up.

    Measured: Period of 0 to 6 hours after surgery

  2. Whether the participants occur vomiting or not

    Vomiting was defined as the discharge of the stomach contents, while retching as an involuntary attempt to vomit that did not produce stomach contents. Retching was considered as vomiting.

    Measured: Period of 0 to 6 hours after surgery

  3. Whether the participants occur nausea or not

    Nausea was defined as a feeling of wanting to throw up or about to throw up.

    Measured: Period of 6 to 24 hours after surgery

  4. Whether the participants occur vomiting or not

    Vomiting was defined as the discharge of the stomach contents, while retching as an involuntary attempt to vomit that did not produce stomach contents. Retching was considered as vomiting.

    Measured: Period of 6 to 24 hours after surgery

Secondary outcomes (2)
  1. Level of nausea

    The level of participants' nausea was rated on four-point scales: 0=no nausea; 1=mild nausea with activities; 2=mild nausea at rest; and 3=se-vere nausea at rest.

    Measured: Within 24 hours after surgery

  2. Number of vomiting

    The investigators defined an emetic episode as a single occurrence of vomiting/retching or as a series of immediately successive vomiting/retching. However, vomiting/retching had to be separated by at least 1 minute to be classified as a single emetic episode.

    Measured: Within 24 hours after surgery

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted15 Oct 2018
  2. Study start1 Sep 2013
  3. Primary completion31 Jan 2020
  4. Study completion31 Jan 2020

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
568 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03705026
Sponsor's protocol ID
UnionAnesthesia
Status last verified
Oct 2018
First submitted
6 Oct 2018
Last updated
16 Sep 2020
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Yan T, Su J, Zhou L, Zhang L. Polymorphisms of 5-hydroxytryptamine receptor type 3B gene and clinical characteristics for vomiting after breast surgery in chinese han female population. J Clin Pharm Ther. 2021 Aug;46(4):936-941. doi: 10.1111/jcpt.13386. Epub 2021 Feb 19.

    PubMed 33605481

Questions about this trial

What is this clinical trial studying?

An observational study of Breast Neoplasms and Anesthesia, General, run by Fujian Medical University Union Hospital.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 16 Sep 2020. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Whether the participants occur nausea or not (time frame: Period of 0 to 6 hours after surgery). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03705026, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Sep 2020.

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