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CTRI Number  CTRI/2024/03/063683 [Registered on: 06/03/2024] Trial Registered Prospectively
Last Modified On: 15/12/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia
Preventive 
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   Effect of preoperative Olanzapine on the incidence of postoperative nausea and vomiting  
Scientific Title of Study   Effectiveness of preoperative Olanzapine versus Placebo, as an add on drug, on the incidence of postoperative nausea and vomiting in laparoscopic gynecological surgeries: a stratified randomised control trial 
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 Nirmala Phobba 
Designation  Junior Resident 
Affiliation  AIIMS BHUBANESWAR 
Address  Department of Anesthesia, OT Complex, 1st floor, hospital building, AIIMS BHUBANESWAR, Khordha, ORISSA 751019 INDIA

Khordha
ORISSA
751019
India 
Phone  9886000593  
Fax    
Email  nirmalaphobba1999@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Prasanta Kumar Das 
Designation  Associate Professor 
Affiliation  AIIMS BHUBANESWAR 
Address  Department of Anesthesia, 4th floor, room no- 409, hospital building, AIIMS BHUBANESWAR, Khordha, ORISSA

Khordha
ORISSA
751019
India 
Phone  9312677007  
Fax    
Email  anaes_prasanta@aiimsbhubaneswar.edu.in  
 
Details of Contact Person
Public Query
 
Name  Dr Nirmala Phobba 
Designation  Junior Resident 
Affiliation  AIIMS BHUBANESWAR 
Address  Department of Anesthesia, OT Complex, 1st floor, hospital building, AIIMS BHUBANESWAR, Khordha, ORISSA 751019 INDIA

Khordha
ORISSA
751019
India 
Phone  9886000593  
Fax    
Email  nirmalaphobba1999@gmail.com  
 
Source of Monetary or Material Support  
Department of Anesthesiology and Critical care, AIIMS Bhubaneswar, Sijua, Patrapada, KHORDA, ORISSA, 751019 
 
Primary Sponsor  
Name  Dr Prasanta Kumar Das 
Address  AIIMS BHUBANESWAR, Sijua, Patrapada, Khordha, Odisha- 751019 
Type of Sponsor  Other [self] 
 
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 Prasanta Kumar Das  AIIMS BHUBANESWAR  OT Complex, Department of Anesthesiology and Critical Care,
Khordha
ORISSA 
9312677007

anaes_prasanta@aiimsbhubaneswar.edu.in 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
INSTITUTIONAL ETHICS COMMITTEE, All India Institute of Medical Sciences, Bhubaneswar  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: N709||Salpingitis and oophoritis, unspecified, (2) ICD-10 Condition: N72||Inflammatory disease of cervix uteri,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Olanzapine  GROUP A will be given one tablet of 10mg oral olanzapine in the preoperative area, one hour before surgery and will be assessed for incidence of postoperative nausea and vomiting for 24 hours after surgery 
Comparator Agent  Placebo  GROUP B will be given one tablet placebo orally in the preoperative area, one hour before surgery and will be assessed for incidence of postoperative nausea and vomiting for 24 hours after surgery 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Female 
Details  Gynecological patients undergoing laparoscopic surgeries
ASA 1 and 2 
 
ExclusionCriteria 
Details  no consent, allergic to study drugs, renal and hepatic failure, on antiemetic and antipsychotic medications, prolonged qt interval, history of obstructive sleep apnea 
 
Method of Generating Random Sequence   Stratified block randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
To compare the incidence of PONV in first 24 hours after surgery between two groups  To compare the incidence of PONV in first 24 hours after surgery between two groups 
 
Secondary Outcome  
Outcome  TimePoints 
severity of nausea and vomting by 4- point severity scale  over 24 hours 
requirement of rescue antiemetic (inj.Metoclopramide 10mg IV)  12 hours 
Quality of recovery(QoR - 15)  over 24 hours 
Side effects of Olanzapine  over 24 hours 
 
Target Sample Size   Total Sample Size="112"
Sample Size from India="112" 
Final Enrollment numbers achieved (Total)= "112"
Final Enrollment numbers achieved (India)="112" 
Phase of Trial   N/A 
Date of First Enrollment (India)   18/03/2024 
Date of Study Completion (India) Date Missing 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="2"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Completed 
Recruitment Status of Trial (India)  Completed 
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
Modification(s)  
Postoperative nausea and vomiting (PONV) is the most distressing event after laparoscopic gynecological surgeries. There have been studies showing the incidence is still nearly 40% even after using dual prophylactic measures. Olanzapine has been effective in reducing PONV in chemotherapy induced nausea and vomiting. In this study we hypothesize that administering preoperative oral Olanzapine in addition to intraoperative ondansetron and dexamethasone would further reduce the incidence of PONV. 
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