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CTRI Number  CTRI/2026/01/101673 [Registered on: 20/01/2026] Trial Registered Prospectively
Last Modified On: 20/01/2026
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Prospective 
Study Design  Single Arm Study 
Public Title of Study   Effect of intraoperative fentanyl dose on postoperative stomach contents measured by ultrasound 
Scientific Title of Study   Correlation between Intra-Operative Fentanyl Dosage with Post-Operative Gastric Residual Volume in Patients Posted for Hysteroscopic Surgery Using Gastric Ultrasound 
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 Mallika Boishya 
Designation  Secondary DNB Trainee 
Affiliation  Medanta The Medicity, Gurugram 
Address  Belguriapara, vill. Mirzapur, PS :AZARA, Guwahati, 17, Assam
Sector 38, Gurugram, Haryana
Kamrup
ASSAM
781017
India 
Phone  7427813968  
Fax    
Email  mituboishya1@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Mallika Boishya 
Designation  Secondary DNB Trainee 
Affiliation  Medanta The Medicity, Gurugram 
Address  Belguriapara, vill. Mirzapur, PS :AZARA, Guwahati, 17, Assam
Sector 38, Gurugram, Haryana
Kamrup
ASSAM
781017
India 
Phone  7427813968  
Fax    
Email  mituboishya1@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Mallika Boishya 
Designation  Secondary DNB Trainee 
Affiliation  Medanta The Medicity, Gurugram 
Address  Belguriapara, vill. Mirzapur, PS :AZARA, Guwahati, 17, Assam
Sector 38,, Gurugram, Haryana
Kamrup
ASSAM
781017
India 
Phone  7427813968  
Fax    
Email  mituboishya1@gmail.com  
 
Source of Monetary or Material Support  
Nil 
 
Primary Sponsor  
Name  Medanta Ethics Committee 
Address  Medanta The Medicity, Sector 38, Gurugram 
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 Mallika Boishya  Medanta The Medicity  Dr Mallika Boishya, Secondary DNB trainee, General Anesthesia, Sector 38
Gurgaon
HARYANA 
7427813968

mituboishya1@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Medanta Institutional Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: Z488||Encounter for other specified postprocedural aftercare,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Intraoperative fentanyl  NIL 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Female 
Details  ASA grade I, II, III undergoing hysteroscopic surgery 
 
ExclusionCriteria 
Details  Patients less than 18 years and more than 65 years of age. Pregnant patients. Patients with morbid obesity (BMI more than 40 kg/m2). ASA IV. History of chronic pain/ or opioid usage. History of delayed gastric emptying. Patients on treatment with antacids, prokinetics or with history of acid peptic disease or gastric reflux. Pre-operative gastric residual volume more than 1.5ml/kg. Refusal for consent. Allergy /sensitivity to study drugs.
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Correlation of intra-operative fentanyl less than and equal to 2 mcg/kg with post-operative gastric residual volume in hysteroscopic surgery using abdominal ultrasound for GRV monitoring.  Baseline, postoperative 1 hour, 2 hours, and 3 hours 
 
Secondary Outcome  
Outcome  TimePoints 
Correlation of Age, VAS score, ASA Grading, type of surgery, duration of surgery, anesthesia technique, BMI with post-operative gastric residual volume, to identify predictors of intolerance or patients with high GRV  1 hour post operative 
 
Target Sample Size   Total Sample Size="60"
Sample Size from India="60" 
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   N/A 
Date of First Enrollment (India)   01/03/2026 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  01/03/2026 
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   This is a prospective observational study designed to evaluate the relationship between intraoperative fentanyl dosage and postoperative gastric residual volume. Female patients undergoing elective hysteroscopic surgery under general anesthesia will be included. Fentanyl will be administered as part of standard anesthesia care and the total cumulative dose will be recorded. Postoperative gastric residual volume will be assessed using gastric ultrasound after 1 hour postoperative. The study aims to determine whether intraoperative fentanyl doses of less than 2 micro gram per kg body weight is associated with increased postoperative gastric residual volume. 
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