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CTRI Number  CTRI/2024/12/077529 [Registered on: 02/12/2024] Trial Registered Prospectively
Last Modified On: 29/11/2024
Post Graduate Thesis  No 
Type of Trial  Observational 
Type of Study   Prospective observational 
Study Design  Other 
Public Title of Study   A Study to see if patients remember anything during anaesthesia for procedures when they are not breathing on their own 
Scientific Title of Study   Incidence of awareness during general anaesthesia in procedures using the apnoeic oxygenation technique : A prospective observational study. 
Trial Acronym  Nil 
Secondary IDs if Any  
Secondary ID  Identifier 
4547_Protocol Version 1.1 dated 5 October 2024   Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Nayana Amin 
Designation  Professor  
Affiliation  Tata memorial centre  
Address  Dept of Anaesthesia, Critical care and Pain, Tata Memorial Hospital, Parel, Mumbai-400012.

Mumbai
MAHARASHTRA
400012
India 
Phone  9820742327  
Fax    
Email  drnayana.amin@yahoo.in  
 
Details of Contact Person
Scientific Query
 
Name  Dr Nayana Amin 
Designation  Professor  
Affiliation  Tata memorial centre  
Address  Dept of Anaesthesia, Critical care and Pain, Tata Memorial Hospital, Parel, Mumbai-400012.

Mumbai
MAHARASHTRA
400012
India 
Phone  9820742327  
Fax    
Email  drnayana.amin@yahoo.in  
 
Details of Contact Person
Public Query
 
Name  Dr Chaitra Pednekar 
Designation  Junior Resident  
Affiliation  Tata memorial centre 
Address  Dept of Anaesthesia, Critical care and Pain, Tata Memorial Hospital, Parel, Mumbai-400012.

Mumbai
MAHARASHTRA
400012
India 
Phone  9702202338  
Fax    
Email  chaitrapednekar63@gmail.com  
 
Source of Monetary or Material Support  
Dept of Anaesthesia, Critical care and Pain, Tata Memorial Hospital, Parel, Mumbai-400012. 
 
Primary Sponsor  
Name  Tata memorial centre 
Address  Dept of Anaesthesia, Critical care and Pain, Tata Memorial Hospital, Parel, Mumbai-400012. 
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 Nayana Amin   Tata Memorial Hospital   Department of Anesthesia Critical care and Pain, Second floor, Main Building Mumbai
Mumbai
MAHARASHTRA 
9820742327

drnayana.amin@yahoo.in 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Tata Memorial Hospital_Institutional Ethics Committee II   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, (2) ICD-10 Condition: C00-D49||Neoplasms,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  NA 
Comparator Agent  Nil  NA 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  90.00 Year(s)
Gender  Both 
Details  1) Patients with age 18 years or more.
2)ASA grade 3 or less.
3)Patients with normal neurological status.
4)Procedures such as direct laryngoscopy, micro laryngoscopy, triple scopy,
micro laryngoscopy with laser. 
 
ExclusionCriteria 
Details  1)Patients with age less than 18 years.
2)Refusal of consent by patient.
3)Procedures requiring upfront endotracheal intubation.
4)Procedures not requiring apnoeic oxygenation.
5)Patients who are not neurologically sound.
6)Patient requiring transfer to ICU after procedure.
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To determine the incidence of awareness during general anaesthesia in procedures in which apnoeic oxygenation is employed.
 
within 3 hours of intervention 
 
Secondary Outcome  
Outcome  TimePoints 
To assess factors associated with awareness during general anaesthesia  within 3 hours of intervention 
 
Target Sample Size   Total Sample Size="310"
Sample Size from India="310" 
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)   16/12/2024 
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="1"
Months="0"
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   Accidental Awareness under General Anaesthesia (AAGA) is a serious but preventable complication that can lead to long term potential psychological consequences such as anxiety, depression, PTSD. Intraoperative awareness is characterized by intraoperative consciousness and postoperative recall of events. Patients may experience auditory recalls, recall of disastrous experience of hurtful surgical stimulation. In scenarios where neuromuscular blockade is used patients may experience a feeling of suffocation , paralysis which is new and deeply distressing for the patient . Patients undergoing procedures requiring apnoeic oxygenation techniques may be prone to AAGA . This is due to the use of neuromuscular blockade which blinds the practitioner to the most reliable indicator of insufficient anaesthesia as the patient cannot move in response to painful stimulus Also, in such procedures there is a rapid pace from induction to procedural stimulation. There are various methods to assess AAGA such as monitors like BP, heart rate, bispectral index, end tidal anaesthetic concentration , but none have been found to be totally efficacious in detecting awareness under anaesthesia. Incidence of AAGA was found out to be more when patients were specifically queried about it , in contrast to surveys which relied on retrospective reviews of patient initiated reports. 
In this study we aim to find the incidence of awareness under anaesthesia when apnoeic oxygenation techniques were employed for procedures and to analyze the factors associated with the same.
 
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