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CTRI Number  CTRI/2025/10/095606 [Registered on: 06/10/2025] Trial Registered Prospectively
Last Modified On: 05/10/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cross Sectional Study 
Study Design  Other 
Public Title of Study   Comparison of desaturation time and oxygenation time with two different oxygen concentrations using percentage of oxygen in the last part of exhaled breath in patients undergoing oncological surgeries 
Scientific Title of Study   Comparison of apnea time and preoxygenation time with two different oxygen concentrations using end tidal oxygen concentration in patients undergoing oncological surgeries a prospective randomised study 
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 Priya H S 
Designation  Junior Resident 
Affiliation  Kidwai memorial institute of oncology  
Address  Room no 105 OT complex building Department of Anaesthesiology and Pain Relief Kidwai memorial institute of oncology Dr MH MARIGOWDA road

Bangalore
KARNATAKA
560029
India 
Phone  9481223896  
Fax    
Email  drpriyahs2710@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Namrata Ranganath 
Designation  Professor  
Affiliation  Kidwai memorial institute of oncology  
Address  Room no 105 OT complex building Department of Anaesthesiology and Pain Relief Kidwai memorial institute of oncology

Bangalore
KARNATAKA
560085
India 
Phone  9880642830  
Fax    
Email  namrang@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Namratha G C  
Designation  Associate Professor  
Affiliation  Kidwai memorial institute of oncology  
Address  Room no 105 OT complex building Department of Anaesthesiology and Pain Relief kidwai memorial institute of oncology

Bangalore
KARNATAKA
560029
India 
Phone  7760771417  
Fax    
Email  namrang@gmail.com  
 
Source of Monetary or Material Support  
Kidwai memorial institute of oncology DrM H Marigowda road hombegowda nagar Bengaluru India 560029 
 
Primary Sponsor  
Name  Kidwai memorial institute of oncology  
Address  Dr MH Marigowda road hombegowda nagar Bengaluru 560029 
Type of Sponsor  Other [Government 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 Priya H S  Kidwai memorial institute of oncology   Kidwai memorial institute of oncology Room no 105 OT complex building Department of Anaesthesiology and Pain Relief Dr MH Marigowda road hombegowda nagar Bengaluru
Bangalore
KARNATAKA 
9481223896

drpriyahs2710@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Medical Ethics Committee Kidwai memorial institute of oncology   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: C801||Malignant (primary) neoplasm, unspecified, (2) ICD-10 Condition: C41||Malignant neoplasm of bone and articular cartilage of other and unspecified sites, (3) ICD-10 Condition: C509||Malignant neoplasm of breast of unspecified site, (4) ICD-10 Condition: C499||Malignant neoplasm of connective and soft tissue, unspecified, (5) ICD-10 Condition: C57||Malignant neoplasm of other and unspecified female genital organs, (6) ICD-10 Condition: C63||Malignant neoplasm of other and unspecified male genital organs, (7) ICD-10 Condition: C15-C26||Malignant neoplasms of digestive organs,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  NIL  NIL 
Comparator Agent  NIL  NIL 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Patients belonging to ASA physical status grade I and II 
 
ExclusionCriteria 
Details  Patients above 65years of age
Patients with anticipated difficult mask ventilation
Patients with obesity
Patients with lung diseases
Patients with cardiac diseases
Patients with raised ICP  
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Not Applicable 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
To compare apnea time between 100 and 80 FiO2 groups
To compare preoxygenation time between 100 and 80 FiO2 groups  
At 3 minutes
At 10 minutes  
 
Secondary Outcome  
Outcome  TimePoints 
To observe changes in hemodynamic parameters during preoxygenation & apnea time  At baseline
After 3 minutes
After 5 minutes
After 6 minutes
After 10 minutes
 
 
Target Sample Size   Total Sample Size="50"
Sample Size from India="50" 
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)   01/11/2025 
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="2"
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   Patients will be divided into 2 groups group 100 and group 80 
Group 100 will be preoxygenated with 100 percent FiO2 and time taken for ETO2 to reach 90 percent is noted and group 80 will be preoxygenated with 80 percent FiO2 and time taken for ETO2 to reach 70 percent is noted as preoxygenation time then after inducing with propofol and muscle relaxation with rocuronium bag and mask ventilation will be done by putting patient on ventilator for 3 minutes then after intubation position of endotracheal tube is confirmed with chest raise single trace of ETCo2 after the delivery of 400ml of one tidal volume breath and circuit is disconnected to look for desaturation time for up to 95 percent and this time will be noted as apnea time once saturation drops to 95 percent circuit is connected back and patient will be ventilated till saturation increases to 100 percent 
Preoxygenation time and apnea time in both the groups are compared
 
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