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CTRI Number  CTRI/2024/02/062912 [Registered on: 20/02/2024] Trial Registered Prospectively
Last Modified On: 18/02/2024
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Prospective Observational study 
Study Design  Other 
Public Title of Study   A study to find out the injuries in the voice box (vocal cords) after using double lumen tube (type of a tube inserted through the vocal cord for administering general anaesthesia) 
Scientific Title of Study   A prospective observational study on assessment of vocal cord injuries after placement of double lumen tube. 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
4206_Version 2.0,Dated 20/10/23  Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Vijaya Patil 
Designation  Professor and head,Divison of Clinical Anaesthesia 
Affiliation  Tata Memorial Hospital 
Address  Second floor, Main Building, Department of Anaethesia,Critical care and Pain , Tata Memorial Hospital, Dr.E. Borges Road Parel Mumbai

Mumbai
MAHARASHTRA
400012
India 
Phone  9819883535  
Fax    
Email  vijayappatil@yahoo.com  
 
Details of Contact Person
Scientific Query
 
Name  Vijaya Patil 
Designation  Professor and head,Divison of Clinical Anaesthesia 
Affiliation  Tata Memorial Hospital 
Address  Second floor, Main Building, Department of Anaethesia,Critical care and Pain , Tata Memorial Hospital, Dr.E. Borges Road Parel Mumbai

Mumbai
MAHARASHTRA
400012
India 
Phone  9819883535  
Fax    
Email  vijayappatil@yahoo.com  
 
Details of Contact Person
Public Query
 
Name  Eesha Patwardhan 
Designation  Junior resident, Department of Anaesthesia Critical care and Pain 
Affiliation  Tata Memorial Hospital 
Address  Second floor, Main Building Department of Anaesthesia Crtical Care and Pain, Tata Memorial Hospital Dr E. Borges Road, Parel, Mumbai

Thane
MAHARASHTRA
400094
India 
Phone  8879108028  
Fax    
Email  eeshapatwardhan97@gmail.com  
 
Source of Monetary or Material Support  
Tata Memorial Hospital, Dr. E. Borges Road, Parel,Mumbai 400012 
 
Primary Sponsor  
Name  Tata Memorial Hospital 
Address  Tata Memorial Hospital Dr E Borges road Parel Mumbai 
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 Vijaya Patil  Tata Memorial Hospital,Mumbai  Second floor, Main Building, Department of Anaethesia,Critical care and Pain , Tata Memorial Hospital, Dr.E. Borges Road Parel Mumbai
Mumbai
MAHARASHTRA 
9819883535

vijayappatil@yahoo.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Tata Memorial Centre Institutional Ethics Committee 2  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  70.00 Year(s)
Gender  Both 
Details  (1)Adult (≥18 years old) patients
(2)Scheduled for surgical procedures requiring placement of double lumen tubes
 
 
ExclusionCriteria 
Details  (1) Preexisting laryngeal injury/disease
(2) Patients with preexisting recurrent laryngeal nerve injuries.
(3) Patients intubated for more than or equal to 24 hours in last 6 months.
(4) Non cooperative and not willing to participate in the study to undergo stroboscopy.
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Incidence of vocal cord injuries after DLT placement  Stroboscopy would be performed before surgery which will be considered as baseline and at 48 hours after surgery to assess injuries and compare two results 
 
Secondary Outcome  
Outcome  TimePoints 
1.Types of injuries can be studies
2.Factors affecting the injuries of vocal cords such as the type of DLT used, the designation of person intubating, number of attempts required for repositioning the DLT. 
Stroboscopy would be performed before surgery which will be considered as baseline & at 48 hours after surgery to assess injuries & compare two results. 
 
Target Sample Size   Total Sample Size="60"
Sample Size from India="60" 
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)   04/03/2024 
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="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   Endotracheal tube is required for patients undergoing general anesthesia .Though it is a safe procedure it is not without its risks .It can cause injuries to oral cavity and vocal cords. For procedures requiring lung isolation ,placement of double lumen tube is essential . Double lumen tube has larger diameter and requires more intraoperative manipulations. Thus chances of vocal cord injuries caused by double lumen tubes is also more .Hence plan of this study is to assess vocal cord injuries using stroboscopy. Stroboscopy is based on Talbot law, which states that images persist on the human retina for very short time after exposure. Interpreting sequential images that correspond to an object in motion is a fundamental principle. Consequently stroboscopy leverages these principles by generating intermittent light flashes in close synchronization with the frequency of vocal cord vibration. Thus study of stroboscopy helps to study in depth intricate patterns of vocol cord vibration and mucosal waves. Thus we can identify the injuries at the earliest. Patients would be recruited from thoracic out patient department and stroboscopy  would be performed by Head and neck team. Stroboscopy would be performed twice pre operatively and within 48 hours after placement of double lumen tube. 
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