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CTRI Number  CTRI/2024/02/062217 [Registered on: 01/02/2024] Trial Registered Prospectively
Last Modified On: 23/01/2024
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Safety of using reduced oxygen concentration during administration of anaesthesia prior to surgery 
Scientific Title of Study   Safety of Pre-oxygenation with 50% oxygen- A Randomized 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 Jithin Mathew Abraham 
Designation  Professor 
Affiliation  Believers Church Medical College Hospital 
Address  Department of Anaesthesiology,Believers Church Medical College Hospital,St Thomas Nagar,Kuttapuzha,Thiruvalla

Pathanamthitta
KERALA
689103
India 
Phone  9446765053  
Fax    
Email  jithinmab@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Jithin Mathew Abraham 
Designation  Professor 
Affiliation  Believers Church Medical College Hospital 
Address  Department of Anaesthesiology,Believers Church Medical College Hospital,St Thomas Nagar,Kuttapuzha,Thiruvalla

Pathanamthitta
KERALA
689103
India 
Phone  9446765053  
Fax    
Email  jithinmab@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Jithin Mathew Abraham 
Designation  Professor 
Affiliation  Believers Church Medical College Hospital 
Address  Department of Anaesthesiology,Believers Church Medical College Hospital,St Thomas Nagar,Kuttapuzha,Thiruvalla

Pathanamthitta
KERALA
689103
India 
Phone  9446765053  
Fax    
Email  jithinmab@gmail.com  
 
Source of Monetary or Material Support  
Department of Anaesthesiology, Believers Church Medical College Hospital,St Thomas Nagar,Kuttapuzha,Thiruvalla 689103,Kerala 
 
Primary Sponsor  
Name  Department of Anaesthesiology 
Address  Believers Church Medical College Hospital,St Thomas Nagar,Kuttapuzha,Thiruvalla 689103,Kerala 
Type of Sponsor  Private medical college 
 
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 Jithin Mathew Abraham  Believers Church Medical College Hospital  Department of Anaesthesiology, St Thomas Nagar,Kuttapuzha,Thiruvalla 689103
Pathanamthitta
KERALA 
9446765053

jithinmab@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
INSTITUTIONAL ETHICS COMMITTEE,BELIEVERS CHURCH MEDICAL COLLEGE HOSPITAL  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  GROUP 100  Patient will be pre- oxygenated with 100% oxygen for three minutes prior to induction of anaesthesia 
Intervention  GROUP 50   Patient will be pre- oxygenated with 50% oxygen for three minutes prior to induction of anaesthesia 
 
Inclusion Criteria  
Age From  15.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Patients belonging to ASA PS classes I and II posted for elective non cardiac surgeries under general anaesthesia 
 
ExclusionCriteria 
Details  Following patients will be excluded
ASA PS classes III and IV
Emergency surgeries
Anticipated difficult airway
Cardiac, neurological and thoracic surgeries
Pregnant and obese patients
Full stomach
Lack of consent
Preoperative saturation less than 96 percent
 
 
Method of Generating Random Sequence   Permuted block randomization, variable 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant Blinded 
Primary Outcome  
Outcome  TimePoints 
% OF PATIENTS WITH DESATURATION  FROM START OF PREOXYGENATION TILL INTUBATION 
 
Secondary Outcome  
Outcome  TimePoints 
1. TIME TAKEN FOR INTUBATION
2. HEMODYNAMIC VARIATIONS DURING INTUBATION
3. EXPIRED OXYGEN CONCENTRATION DURING THE FIRST FIVE MINUTES OF PREOXYGENATION 
FROM START OF PREOXYGENATION TILL INTUBATION 
 
Target Sample Size   Total Sample Size="200"
Sample Size from India="200" 
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)   05/02/2024 
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="0"
Months="4"
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   Preoxygenation is the initiation of oxygenation prior to induction of general anaesthesia and tracheal intubation. Traditional practice of preoxygenation is done with 100% oxygen at 6-10 L/min of oxygen flow for 3-5 minutes. This helps to increase the safe apnea time for intubation. This practice results in wastage of oxygen as well could cause problems of oxygen toxicity. This study aims to establish the safety of using 50% oxygen during preoxygenation in ASA I and II patients without anticipated difficult airway. The intubation will be done by anaesthesiologists with over five years of experience.

Patients fulfilling inclusion criteria will be randomised to receive either 100% or 50% oxygen during preoxygenation. The vitals (heart rate, blood pressure and saturation) and the expired oxygen concentration will be monitored at specified time intervals. The time to intubation and any oxygenation/airway related incidents will be noted. At any time point, if there is a difficulty with mask ventilation/ intubation in those receiving 50% oxygen, they will be administered 100% oxygen.
 
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