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CTRI Number  CTRI/2025/11/097398 [Registered on: 13/11/2025] Trial Registered Prospectively
Last Modified On: 12/11/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia
Preventive 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Comparing drugs Amisulpride and Dexamethasone in reducing nausea and vomiting after surgery in high risk patients. 
Scientific Title of Study   Comparing the efficacy of intravenous Amisulpride and Dexamethasone in preventing postoperative nausea and vomiting in high risk patients : A randomized controlled double blind study 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Aryan Dimri 
Designation  Post graduate Resident 
Affiliation  All India Institute of Medical Sciences,Rishikesh  
Address  Department of Anaesthesia All India Institute of Medical Sciences, Veerbhadra Marg,Rishikesh Dehradun UTTARANCHAL 249203 India

Dehradun
UTTARANCHAL
249203
India 
Phone  7016400378  
Fax    
Email  aryandimri30@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Priyanka Gupta  
Designation  Additional Professor 
Affiliation  All India Institute of Medical Sciences,Rishikesh 
Address  Department of Anaesthesia All India Institute of Medical Sciences, Veerbhadra Marg,Rishikesh Dehradun UTTARANCHAL 249203 India Phone

Dehradun
UTTARANCHAL
249203
India 
Phone  9811894899  
Fax    
Email  drpriyankagupta84@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Priyanka Gupta  
Designation  Additional Professor 
Affiliation  All India Institute of Medical Sciences,Rishikesh 
Address  Department of Anaesthesia All India Institute of Medical Sciences, Veerbhadra Marg,Rishikesh Dehradun UTTARANCHAL 249203 India Phone


UTTARANCHAL
249203
India 
Phone  9811894899  
Fax    
Email  drpriyankagupta84@gmail.com  
 
Source of Monetary or Material Support  
NIL 
 
Primary Sponsor  
Name  Department of Anaesthesiology, AIIMS Rishikesh 
Address  Department of Anaesthesiology,Level 6, Virbhadra Road, Rishikesh, District: Dehradun, Pincode: 249203, Uttarakhand, India  
Type of Sponsor  Research institution and hospital 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Aryan Dimri  AIIMS Rishikesh   Operating Room 2 to 16 ,Level 6, Department of Anaesthesiology, AIIMS Rishikesh, Virbhadra Road, Rishikesh Dehradun UTTARANCHAL Dehradun UTTARANCHAL
Dehradun
UTTARANCHAL 
7016400378

aryandimri30@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee, All India Institute of Medical Sciences, Rishikesh   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O||Medical and Surgical,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  inj Dexamethasone 8mg   Group D will receive inj dexamethasone 8 mg intravenously and will be wheeled into the operation theatre after 10 minutes. 
Intervention  inj. Amisulpride 5mg   inj Amisulpride 5mg will be given 10 min prior to induction of anaesthesia to group A and patient will be monitored for adverse effect like QT prolongation. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  1) Apfel criteria of more than 2.
2) American society of anaesthesiologists (ASA) physical class I-II
3) Non-smoker
 
 
ExclusionCriteria 
Details  1) Patient refusal to participate in study
2) Any previous history of drug reaction to amisulpride
3) Patient with severe hepatic or renal dysfunction or cardiac dysfunction
4) Patient requiring orogastric /nasogastric tube in the post-operative period.
5) Patient with poorly controlled diabetes mellitus – HbA1c more than 9
6) Patient on medications which prolong QT interval.
7) Patient on other antipsychotic medications.
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
Incidence of Postoperative Nausea and Vomiting (PONV) in 24 hrs of post operative period: In the ward, episodes of vomiting, retching will be recorded, and nausea score as per 11-point verbal rating scale from 0-10 with zero being no nausea and 10 being worst possible nausea and significant nausea defined as a score of 4 and above.
 
Above findings will be evaluated at 1st, 2nd, 6th, 12th and 24 hours of post-operative period 
 
Secondary Outcome  
Outcome  TimePoints 
1. Total dose of rescue anti emetic recorded in post operative period of 24 hours
2. Duration of PACU stay
3. Any amisulpride related adverse events in post operative period of 24 hours
 
total dose of rescue antiemetic (injection ondansetron) at the end of 24 hrs post op period.
Duration of pacu stay ( duration in post op till patient is shifted from pacu to ward)
adverse events will be followed up for at 1st , 2nd , 6th & 24th hours of post operative period. 
 
Target Sample Size   Total Sample Size="324"
Sample Size from India="324" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 4 
Date of First Enrollment (India)   24/11/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

Comparing the Efficacy of Intravenous Amisulpride and Dexamethasone in Preventing Postoperative Nausea and Vomiting in High Risk Patients A Randomized Controlled Double Blind Study. Postoperative nausea and vomiting is a common and distressing complication following general anesthesia with an incidence up to 80 percent in high risk patients. It can delay recovery and hospital discharge. Risk factors include female gender, non smoking status, previous history of PONV or motion sickness, and perioperative opioid use. Dexamethasone is widely used as a prophylactic antiemetic but may cause hyperglycemia especially in diabetic patients. Amisulpride, a dopamine D2 and D3 receptor antagonist, has shown efficacy in preventing PONV in recent studies with minimal adverse effects. Comparative data between amisulpride and dexamethasone are limited in the Indian population. This study aims to compare their efficacy in preventing PONV among high risk surgical patients.This is a randomized double blind controlled trial conducted at AIIMS Rishikesh. A total of 324 adult patients aged 18 to 65 years, ASA physical status I or II, with an Apfel score of more than two, will be included. Patients will be randomly allocated into two groups. Group A will receive intravenous amisulpride 5 milligrams ten minutes before induction of anesthesia. Group D will receive intravenous dexamethasone 8 milligrams ten minutes before induction. Standardized anesthesia and analgesia protocols will be followed. Blinding will be maintained for patients and outcome assessor. The primary outcome is the incidence of postoperative nausea and vomiting within 24 hours after surgery. Secondary outcomes include severity of nausea, requirement for rescue antiemetic medication, duration of stay in post anesthesia care unit, and adverse effects related to amisulpride. This study will evaluate and compare the effectiveness and safety of intravenous amisulpride and dexamethasone for the prevention of postoperative nausea and vomiting in high risk patients undergoing general anesthesia.

 
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