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CTRI Number  CTRI/2020/10/028667 [Registered on: 27/10/2020] Trial Registered Prospectively
Last Modified On: 14/10/2020
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Multiple Arm Trial 
Public Title of Study   Comparing ease of passing the tube into windpipe in patients using 3 different ways under full anaesthesia with collar around neck for stability. 
Scientific Title of Study   Comparison of MILLER, McCOY, MACINTOSH Adult Laryngoscopes for Oro tracheal intubation in patients with simulated restricted neck mobility- randomised control trial 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Anusha S Kalsad 
Designation  Post Graduate 
Affiliation  Mahatama Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth university. 
Address  Department of Anaesthesiology second floor hospital block Mahatma gandhi medical college and research institute SBV University pillayarkuppam

Pondicherry
PONDICHERRY
607402
India 
Phone  9535757961  
Fax  04132615457  
Email  kalsadanusha@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Gayatri Mishra 
Designation  Associate professor 
Affiliation  Mahatama Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth university. 
Address  Department of anaesthesiology second floor hospital block mahatma gandhi medical college and research institute SBV university pillaiyarkuppam

Pondicherry
PONDICHERRY
607402
India 
Phone  9894354068  
Fax  04132615457  
Email  drgayatrimishra@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Gayatri Mishra 
Designation  Associate professor 
Affiliation  Mahatama Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth university. 
Address  Department of anaesthesiology second floor hospital block mahatma gandhi medical college and research institute SBV university pillayarkuppam

Pondicherry
PONDICHERRY
607402
India 
Phone  9894354068  
Fax  04132615457  
Email  drgayatrimishra@gmail.com  
 
Source of Monetary or Material Support  
Department of Anaesthesiology Mahatma Gandhi Medical College and Research Institute 
 
Primary Sponsor  
Name  Department of Anaesthesiology  
Address  Second floor hospital block mahatma gandhi medical college and research institute pillaiyarkuppam  
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 Gayatri Mishra  Mahatma gandhi medical college and research institute  Department of Anaesthesiolog, Pillaiyarkuppam, Pondicherry 607402
Pondicherry
PONDICHERRY 
989454068
04132615457
drgayatrimishra@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institution Human Ethics Committee, Mahatma Gandhi Medical College  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  Intubation by Miller adult laryngoscope with simulated restricted neck mobility.   Miller adult laryngoscope will be compared with McCOY and Macintosh adult laryngoscopes for oro tracheal intubation under General Anaesthesia in patients with simulated restricted neck using soft cervical collar. If 1st attempt fails, second operator will intubate. If 2nd attempt fails its considered as failure and cervical collar will be removed and intubated with conventional laryngoscope with maximum allowable time of 90 seconds and Oxygen saturation fall not below 95%. 
Comparator Agent  Comparing Miller with McCOY and Macintosh adult laryngoscopes in patients with simulated restricted neck mobility.   Miller adult laryngoscope will be compared with McCOY and Macintosh adult laryngoscopes for oro tracheal intubation under General Anaesthesia in patients with simulated restricted neck using soft cervical collar. If 1st attempt fails, second operator will intubate. If 2nd attempt fails its considered as failure and cervical collar will be removed and intubated with conventional laryngoscope with maximum allowable time of 90 seconds and Oxygen saturation fall not below 95%. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  1. Adults 18-60 Years
2. ASA I-II
3. Elective surgeries requiring General Anesthesia with Endotracheal Intubation. 
 
ExclusionCriteria 
Details  1. Emergency cases.
2. Patients with cervical spine injury and pathology.
3. Anticipated difficult airway.
4. Patients with increased risk of pulmonary aspiration.
5. History of difficult intubation.
 
 
Method of Generating Random Sequence   Permuted block randomization, fixed 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Comapare IDS score (Intubation Difficulty Scale in all the three different laryngoscopes.
Namely :
1. Number of attempts.
2. Number of operators.
3. Number of alternative technique.
4. Cormack Lehane grading.
5. Lifting force required.
6. Laryngeal pressuure.
7. Vocal cord mobility.  
during intubation 
 
Secondary Outcome  
Outcome  TimePoints 
1. Intubation time.
2. Use of bougie.
3. Hemodynamics.
4. Post operative sore throat. 
Haemodynamics at baseline, during induction and after laryngoscopy.
Haemodynamics post intubation at the intervals of 1st,2nd,3rd,4th,5th minute.



 
 
Target Sample Size   Total Sample Size="90"
Sample Size from India="90" 
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)   01/11/2020 
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   Nil 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary   Tracheal intubation should be done with utmost precaution in cervical spine injury patients as it possess great challenge to anaesthesiologist for securing airway. Neck restriction is highly essential to prevent neurological damage, failing can lead to morbidity and mortality. Studies have been done using various airway gadgets in simulated restricted neck for tracheal intubation.
There is lack in literature review on Adult Miller laryngoscope for intubation in such patients.  
Hence we would like to compare the performance of Miller with McCoy and Macintosh adult laryngoscoes for Oro tracheal intubation using soft cervical collar, creating a simulated restricted neckmobility.  
Patients randomly assigned to three groups with 30 patients in each based on the device used for laryngoscopy. In Group 1 - Miller laryngoscope blade, Group 2 - McCoy laryngoscope blade and Group 3 - Macintosh laryngoscope blade. The endotracheal cuffed tube of established appropriate size will be advanced into the trachea under direct vision with or without bougie. Finally, the scope will be removed and circuit will be connected. The adequacy of ventilation will be confirmed by Capnography and Chest auscultation. 
If first attempts fail second operator will intervene. If second attempt fails, it will be considered as failure and the cervical collar will be removed and intubation will be done with conventional laryngoscope.  
First attempt success rate is defined as single passage of endotracheal tube with or without bougie. 
All intubations will be performed and risk management will be taken care by 5 year experienced anesthesiologist . 
All parameters will be recorded as per the protocol.



 
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