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CTRI Number  CTRI/2025/06/089808 [Registered on: 30/06/2025] Trial Registered Prospectively
Last Modified On: 27/06/2025
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   In this study we compare two different drugs dexmedetomidine and ketamine with paracetamol to see their ability to reduce pain in children born before completion of term undergoing laser photocoagulation surgeries for retinopathy of prematurity 
Scientific Title of Study   Opioid free analgesia using Dexmedetomidine vs Ketamine in infants with Retinopathy of Prematurity undergoing laser photocoagulation surgeries 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Vanparthi Anjali Gupta 
Designation  Junior Resident 
Affiliation  Post Graduate Institute of Medical Education and Research 
Address  Anaesthesia office ,Department of Anaesthesiology and intensive care,Nehru hospital,PGIMER, Sector 12, Madhyamarg Chandigarh

Chandigarh
CHANDIGARH
160012
India 
Phone  7901015647  
Fax    
Email  anjali.vanparthi99@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Tanvir Samra 
Designation  Additional Professor 
Affiliation  Post Graduate Institute of Medical Education and Research 
Address  Anaesthesia office ,Department of Anaesthesiology and intensive care,Nehru hospital,PGIMER, Sector 12, Madhyamarg Chandigarh

Chandigarh
CHANDIGARH
160012
India 
Phone  7087262379  
Fax    
Email  drtanvirsamra@yahoo.in  
 
Details of Contact Person
Public Query
 
Name  Dr Tanvir Samra 
Designation  Additional Professor 
Affiliation  Post Graduate Institute of Medical Education and Research 
Address  Anaesthesia office ,Department of Anaesthesiology and intensive care,Nehru hospital,PGIMER, Sector 12, Madhyamarg Chandigarh

Chandigarh
CHANDIGARH
160012
India 
Phone  7087262379  
Fax    
Email  drtanvirsamra@yahoo.in  
 
Source of Monetary or Material Support  
Postgraduate Institute of Medical Education and Research,Sector 12,Madhyamarg, Chandigarh,160012,India 
 
Primary Sponsor  
Name  Director of Postgraduate Institute of Medical Education and Research 
Address  PGIMER, Sector 12, Madhyamarg, Chandigarh, 160012  
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 Vanparthi Anjali Gupta  PostGraduate Institute of Medical Education and Research  Advanced Eye Centre Operation theatre,4th floor, PGIMER, sector 12,Madhyamarg,Chandigarh,160012
Chandigarh
CHANDIGARH 
7901015647

anjali.vanparthi99@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Postgraduate Institute Of Medical Education and Research,Chandigarh,INSTITUTE ETHICS COMMITTEE  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 
Intervention  DEXMEDETOMIDINE  Dexmedetomidine administered as a loading dose of 0.5 mcg/kg in first 10 mins followed by a continuous infusion of 0.7 mcg/kg/hr which will be titrated based on haemodynamic response to a maximum of 2mcg/kg 
Intervention  KETAMINE  Ketamine administered as an intravenous bolus prior to the procedure of 1-2mg/kg in the first 10 mins followed by infusion at 0.1mg/kg/h to a maximum of 0.25mg/kg/h 
Comparator Agent  PARACETAMOL  PCM for neonates upto 37 weeks post conception age 7.5mg/kg, 37 weeks and above 10mg/kg will be given as an infusion for 10 mins 
 
Inclusion Criteria  
Age From  1.00 Day(s)
Age To  1.00 Year(s)
Gender  Both 
Details  Preterm infants less than 37 weeks of gestational age diagnosed with ROP requiring laser treatment. 
 
ExclusionCriteria 
Details  1. Infants with contraindications to dexmedetomidine or ketamine.
2. Infants already on any type of respiratory support or sick enough to be in NICU.
3. Infants with any congenital abnormalities.
4. Refusal to take part in 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 compare pain scores at 5 mins post laser photocoagulation surgeries in infants
using premature infant pain profile(PIPP). 
1min, 5 mins,10mins,30mins post laser photocoagulation surgeries in infants
using premature infant pain profile(PIPP). 
 
Secondary Outcome  
Outcome  TimePoints 
To compare intraoperative hemodynamic stability, adverse effects (apnea,bradycardia)
and the time of awakening post procedure. 
Baseline, every 5 mins intraoperatively postoperatively till 30 mins. 
 
Target Sample Size   Total Sample Size="54"
Sample Size from India="54" 
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 1 
Date of First Enrollment (India)   30/08/2025 
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="0"
Days="0" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
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   Retinopathy of prematurity (ROP) is a condition of retinal vascular and capillary growth that affects premature newborns on oxygen therapy.Laser photocoagulation is one of the available treatment options.
 Laser therapy can be done under deep sedation or general anaesthesia.
  Exposure to anaesthesia obtunds the compensatory respiratory mechanisms in preterm causing early desaturation in preterm neonates. Apnea of prematurity is a development disorder in infants less than 37 weeks and is due to underdeveloped respiratory control in infants.

Use of opioids increases the incidence of respiratory depression.

Preterm infants xperiencing pain during performance of multiple procedures in NICU nasogastric tube insertion, cannulations, chest tube insertions etc have poorer motor and cognitive outcomes.Thus, various non pharmacological methods of pain management like nestingswaddlingnon nutritive suckingfacilitated tuckingkangaroo mother care etc and pharmacological methods like administration of non analgesic(sucrosedextrose) and analgesic drugs (opioidsacetaminophenhave been popularized in pediatric patients.

The mainstay of management for ROP involves the painful process of laser photocoagulation, which ablates the retinal vessels.

Ketamine is one such non opioid analgesic. Ketamine is a phencyclidine derivative that acts as a noncompetitive N-methyl-D-aspartate as well as a glutamate receptor antagonist.

Dexmedetomidine  is a highly selective alpha2-agonist with greater affinity to alpha2 than alpha 1 with a ratio of 1600:1, dexmedetomidine produces sedation that mimics natural sleep, anxiolysis, sympatholysis, and an anaesthetic-sparing effect without causing respiratory depression that is clinically significant

All the infants enrolled in the study,would undergo preanaesthetic evaluation.

NPO Guidelines include abstaining from formula feed for 6 hours or breast milk for at least 4 hours and clear fluids for at least 2 hrs prior to surgery.

In the OT, routine ASA monitoring would be done including electrocardiogram (ECG), pulse oximetry (Spo2), non-invasive blood pressure (NIBP), temperature (TEMP) and ETCO2. IV line will be secured after application of EMLA cream. Suitable face masks, according to each patient’s age and weight, will be kept. Preoxygenation with 100% oxygen will be done. Loading dose of Dexmedetomidine or Ketamine  or PCM will be given in infusion over 10 mins according to the group allocated.

Anaesthesia induction will be performed either with the inhalational agent sevoflurane, gradually increased from 2% to 8%, or with propofol at a dosage of 2-3mg/kg IV, titrated to achieve a MAC of 1-1.3 or BIS 40-60, utilizing a closed anesthesia circuit. Following confirmation of the ability to ventilate, an appropriateatracurium dosage of 0.5 mg/kg IV will be administered to achieve neuromuscular relaxation followed by which child will be intubated with ET tube of appropriate size after 4 minutes according to the age and weight of the child.

After induction the infants in group DEX will be maintained on dexmedetomidine at an infusion of 0.7mcg/kg/hr, infants in group KETA are maintained on ketamine at an infusion of 0.1mg/kg/hr and titrated according to haemodynamic stability, the infant will be maintained using sevoflurane, oxygen and nitrous oxide mixture intraoperatively, intraoperative vitals are noted at 5 mins interval to assess the intraoperative pain, inadequate response will be seen as a 20% increase or decrease of heart rate from the baseline after ruling out other reversible causes.

Pain in the post operative period will be assessed using the PIPP scale at 1, 5, 15 and 30 mins.

In case of pain the infant in group DEX and group KETA will be given PCM as required.  

 



 
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