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CTRI Number  CTRI/2025/09/094278 [Registered on: 04/09/2025] Trial Registered Prospectively
Last Modified On: 03/09/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Pain relief after gallbladder surgery: A study comparing two doses of a medicine dexmedetomidine mixed with ropivacaine sprayed inside the abdomen in patients undergoing laparoscopic cholecystectomy 
Scientific Title of Study   Comparative Study of Intraperitoneal Instillation of Ropivacaine with Two Different Doses of Dexmedetomidine for Postoperative Analgesia in Patients Undergoing Laparoscopic Cholecystectomy 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Maneesh V S 
Designation  PG Student 
Affiliation  Naruvi Hospitals 
Address  Collectors Office Road, Bangalore Chennai National Highway NH 48 Vellore 632 004

Vellore
TAMIL NADU
632004
India 
Phone  9840958942  
Fax    
Email  vsmaneesh99@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Saravanan Ankichetty 
Designation  HOD ,Senior Consultant  
Affiliation  Naruvi Hospitals 
Address  Collectors Office Road, Bangalore Chennai National Highway NH 48 Vellore 632 004

Vellore
TAMIL NADU
632004
India 
Phone  9629957683  
Fax    
Email  sarandoc2000@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Maneesh V S 
Designation  PG Student 
Affiliation  Naruvi Hospitals 
Address  Collectors Office Road, Bangalore Chennai National Highway NH 48 Vellore 632 004

Vellore
TAMIL NADU
632004
India 
Phone  9840958942  
Fax    
Email  vsmaneesh99@gmail.com  
 
Source of Monetary or Material Support  
Naruvi Hospitals Collectors Office Road Bangalore Chennai National Highway NH 48 Vellore 
 
Primary Sponsor  
Name  Naruvi Hospitals 
Address  Naruvi Hospitals Collectors Office Road Bangalore Chennai National Highway NH 48 Vellore Address Vellore TAMIL NADU 632004 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 
Maneesh V S  Naruvi Hospitals  Collectors Office Road Bangalore Chennai National Highway NH 48 Vellore 632004
Vellore
TAMIL NADU 
9840958942

vsmaneesh99@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Review Board (IRB) of Naruvi Hospitals, Vellore, India  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K800||Calculus of gallbladder with acutecholecystitis, (2) ICD-10 Condition: O||Medical and Surgical,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Dexmedetomidine  Group RD2: Intraperitoneal spraying of 0.2% Ropivacaine 40ml with 1.0 µg/kg Dexmedetomidine 
Intervention  Dexmedetomidine  Group RD1: Intraperitoneal spraying of 0.2% Ropivacaine 40ml with 0.5 µg/kg Dexmedetomidine  
Comparator Agent  NIL  NIL 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Patients aged 18 to 65 years undergoing elective laparoscopic
cholecystectomy
ASA physical status I,II. 
 
ExclusionCriteria 
Details  ASA physical status III or IV.
Patients with contraindications to ropivacaine or dexmedetomidine.
Patients with chronic pain conditions or on chronic opioid therapy.
Patients who are unwilling to participate in the study. 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant, Investigator and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
To evaluate the duration of analgesia following intraperitoneal
administration of ropivacaine with two different doses of
dexmedetomidine. 
Continuous monitoring until first rescue analgesic — records exact time (hours and minutes) from end of surgery to first rescue dose.
Pain scores (NPRS) to detect the need for rescue will be recorded at: 0 h (on arrival to PACU), 1 h, 2 h, 3 h, 4 h, 5 h, 6 h, 12 h, 18 h and 24 h.
If no rescue analgesic is required within 24 h, duration is censored at 24 h. 
 
Secondary Outcome  
Outcome  TimePoints 
To evaluate the total analgesic consumption in the first 24 hours
postoperatively.
To evaluate sedation scores at various time intervals.
To evaluate the incidence of shoulder pain in the first 24 hours.
To monitor the postoperative bowel movements 
Total analgesic consumption recorded cumulatively at 24 hours
Ramsay sedation score at 0,1,2,3,4,5,6,12,18,24 hours
Shoulder pain assessed at 1,6,24 hours (present/absent, onset noted)
Bowel movements monitored up to 24 hours (time of first flatus recorded)
 
 
Target Sample Size   Total Sample Size="70"
Sample Size from India="70" 
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)   15/09/2025 
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   This study is a prospective randomized double blind parallel group active controlled trial conducted in patients undergoing elective laparoscopic cholecystectomy. The aim is to compare the efficacy of intraperitoneal ropivacaine combined with two different doses of dexmedetomidine for postoperative analgesia. Patients will be randomly assigned to receive ropivacaine with dexmedetomidine 0.5 microgram per kilogram or ropivacaine with dexmedetomidine 1 microgram per kilogram. The primary outcome is the duration of analgesia measured as time to first rescue analgesic requirement. Secondary outcomes include total analgesic consumption in the first 24 hours, incidence of shoulder pain, sedation scores, and postoperative bowel movements. This study is expected to identify the optimal and safe dose of dexmedetomidine for intraperitoneal use in order to improve postoperative pain relief and reduce opioid related adverse effects. 
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