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CTRI Number  CTRI/2020/01/022744 [Registered on: 14/01/2020] Trial Registered Prospectively
Last Modified On: 02/12/2019
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   To study the effect of three head positions on ease of placing tube in wind pipe  
Scientific Title of Study   Evaluation of videolaryngoscopy guided tracheal intubation characteristics in neutral, sniffing and simple extension head position in adult patients 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Arushi Saili 
Designation  Post graduate student 
Affiliation  Vardhman Mahavir Medical College and Safdarjung Hospital 
Address  Department of Anaesthesia and Intensive Care, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi 110029 New Delhi 110029

South
DELHI
110029
India 
Phone  26198462  
Fax    
Email  arushisaili@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Smita Prakash 
Designation  Consultant 
Affiliation  Vardhman Mahavir Medical College and Safdarjung Hospital 
Address  Department of Anaesthesia and Intensive Care, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi 110029 New Delhi 110029

South
DELHI
110029
India 
Phone  26198462  
Fax    
Email  drsunilprakash@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Smita Prakash 
Designation  Consultant 
Affiliation  Vardhman Mahavir Medical College and Safdarjung Hospital 
Address  Department of Anaesthesia and Intensive Care, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi 110029 New Delhi 110029

South
DELHI
110029
India 
Phone  26198462  
Fax    
Email  drsunilprakash@gmail.com  
 
Source of Monetary or Material Support  
Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi  
 
Primary Sponsor  
Name  Safdarjung Hospital 
Address  Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi  
Type of Sponsor  Government medical college 
 
Details of Secondary Sponsor  
Name  Address 
NIL  Not applicable 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Smita Prakash  Safdarjung Hospital  Main Operation Theatre, 2nd Floor, Department of Anaesthesia and Intensive Care, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi 110029 New Delhi 110029
South
DELHI 
26198462

drsunilprakash@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institute Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: R098||Other specified symptoms and signsinvolving the circulatory and respiratory systems,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Neutral and simple extension head position  Laryngoscopy and tracheal intubation characteristics with head in neutral and simple extension head position 
Comparator Agent  Sniffing head position  Laryngoscopy and tracheal intubation characteristics will be noted with head in sniffing position 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Patients belonging to American Society of Anesthesiologists physical status I and II, scheduled for elective surgery under general anesthesia with tracheal intubation 
 
ExclusionCriteria 
Details  1.Patients with predicted difficult airway requiring awake tracheal intubation
2.Obvious malformation of the neck or face, known oropharyngeal pathology, unstable cervical spine
3.Patients requiring rapid sequence intubation
4.Pregnancy
5. BMI > 30 kg/m2
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
To compare the neutral, sniffing and simple extension head position for ease of videolaryngoscopy-guided tracheal intubation using Modified Intubation Difficulty Score in adult patients undergoing elective surgery under general anaesthesia  At the time of videolaryngoscopy and tracheal intubation  
 
Secondary Outcome  
Outcome  TimePoints 
1. Intubation time
2. Laryngoscopic view assessed by Cormack and Lehane grading and by Percentage of Glottic Opening (POGO) score
3. First attempt success rate
 
At the time of videolaryngoscopy and tracheal intubation 
 
Target Sample Size   Total Sample Size="180"
Sample Size from India="180" 
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)   20/01/2020 
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   None yet 
Individual Participant Data (IPD) Sharing Statement

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

Brief Summary  

Successful placement of the tracheal tube during videolaryngoscopy may depend on head and neck position. A suboptimal head and neck position may be associated with difficult videolaryngoscopy and tracheal intubation and repeated attempts at laryngoscopy that can lead to poor outcomes. Videolaryngoscopy involves visualising the vocal cords by means other than direct sight. The sniffing position may not be advantageous during performance of videolaryngoscopy as it is not necessary to align the three axes to obtain glottis view. Impingement of the tracheal tube on the anterior tracheal wall is one of the factors associated with technical difficulties during videolaryngoscopy-guided intubation.

It has been suggested that impingement of the tracheal tube on the anterior tracheal wall is more likely to occur in the sniffing position due to lower cervical spine flexion compared with the neutral or simple extension position. No significant difference in the ease of intubation was found between the sniffing and the neutral position when using C-MAC® videolarygoscope. Head and neck position in supine sniffing position was found to be a predictor of difficult videolaryngoscopy compared with supine neutral position. 

There is paucity of literature investigating the optimal head and neck position for videolaryngoscopy. The study hypothesis is that the neutral position would be superior to the sniffing position and the simple extension position with regard to ease of intubation while performing C-MAC® videolaryngoscopy in adult patients undergoing surgery under general anaesthesia. The aim of this prospective, randomised study is to determine the differences between the sniffing, neutral and simple neck extension position with regard to ease of intubation as determined by the modified intubation difficulty scale by videolaryngoscopy in adult patients undergoing elective surgery under general anaesthesia with tracheal intubation. Intubation time, Percentage of glottic opening score, Cormack-Lehane laryngoscopy grade and first attempt success rate will also be compared.

 
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