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CTRI Number  CTRI/2023/04/051981 [Registered on: 26/04/2023] Trial Registered Prospectively
Last Modified On: 24/04/2023
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cohort Study 
Study Design  Single Arm Study 
Public Title of Study   A STUDY TO MEASURE A PARAMETER IN NECK TO HELP IDENTIFY THE DIFFICULT LEVEL TO PUT BREATHING TUBE BEFORE SURGERY 
Scientific Title of Study   A STUDY OF ACROMIOAXILLO SUPRASTERNAL NOTCH INDEX (AASI) TO PREDICT DIFFICULT VISUALIZATION OF LARYNX 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  DR MOHAN KUMAR K S 
Designation  POST GRADUATE 
Affiliation  DR B R AMBEDKAR MEDICAL COLLEGE AND HOSPITAL 
Address  DEPARTMENT OF ANAESTHESIA, DR B R AMBEDKAR MEDICAL COLLEGE AND HOSPITAL, KADUGONDANAHALLI, BANGALORE 560045

Bangalore
KARNATAKA
560045
India 
Phone  9538350911  
Fax    
Email  drmohankote@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  DR SANTOSH KUMAR 
Designation  PROFESSOR 
Affiliation  DR B R AMBEDKAR MEDICAL COLLEGE AND HOSPITAL 
Address  DEPARTMENT OF ANAESTHESIA, DR B R AMBEDKAR MEDICAL COLLEGE AND HOSPITAL, KADUGONDANAHALLI, BANGALORE 560045

Bangalore
KARNATAKA
560045
India 
Phone  9845785715  
Fax    
Email  drsantoshkumarcc@gmail.com  
 
Details of Contact Person
Public Query
 
Name  DR MOHAN KUMAR K S 
Designation  POST GRADUATE 
Affiliation  DR B R AMBEDKAR MEDICAL COLLEGE AND HOSPITAL 
Address  DEPARTMENT OF ANAESTHESIA, DR B R AMBEDKAR MEDICAL COLLEGE AND HOSPITAL, KADUGONDANAHALLI, BANGALORE 560045

Bangalore
KARNATAKA
560045
India 
Phone  9538350911  
Fax    
Email  drmohankote@gmail.com  
 
Source of Monetary or Material Support  
DR B R AMBEDKAR MEDICAL COLLEGE AND HOSPITAL, KADUGONDANAHALLI, BANGALORE 560045 
 
Primary Sponsor  
Name  DR MOHAN KUMAR K S 
Address  OT COMPLEX, DEPARTMENT OF ANAESTHESIA, DR B R AMBEDKAR MEDICAL COLLEGE AND HOSPITAL, BANGALORE 560045 
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 MOHAN KUMAR K S  DR B R AMBEDKAR MECIAL COLLEGE AND HOSPITAL  OT COMPLEX, DEPARTMENT OF ANAESTHESIOLOGY, DR B R AMBEDKAR MEDICAL COLLEGE AND HOSPITAL, KADUGONDANAHALLI, BANGALORE 560045
Bangalore
KARNATAKA 
9538350911

drmohankote@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
INSTITUTION ETHICS COMMITTEE DR B R AMBEDKAR MEDICAL COLLEGE AND HOSPITAL  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 
 
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 (ASA PS) I and II.
 
 
ExclusionCriteria 
Details  Patients with clinically predicted difficult airway,
Patients with body mass index >30 kg/m2,
Obstetric patients,
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To evaluate the usefulness of Acromioaxillo Suprasternal Notch Index (AASI) for predicting the difficult visualization of larynx during endotracheal intubation in patients undergoing general anaesthesia as assessed by Cormack – Lehane grading.  Preoperative period and during endotracheal intubation 
 
Secondary Outcome  
Outcome  TimePoints 
To compare Acromioaxillo Suprasternal Notch Index (AASI) with other predictors of difficult airway like Modified Mallampati (MMP) score, sternomental distance (SMD), thyromental distance (TMD) and neck circumference.  Preoperative period and during endotracheal intubation 
 
Target Sample Size   Total Sample Size="250"
Sample Size from India="250" 
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)   05/05/2023 
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   After obtaining approval from the Institutional Ethics Committee and written informed consent will be taken from the eligible patients with American Society of Anesthesiologists’ physical status (ASA PS) I and II scheduled to undergo elective surgery requiring endotracheal intubation will be enrolled in this prospective observational single-centre study. Each patient will be assessed before surgery for AASI. During endotracheal intubation the best laryngoscopy view will be noted according to the Cormack – Lehane (CL) grading system.

AASI will be measured with the patients lying in supine position and the upper limbs resting by the side of the body. Using a ruler, a vertical line drawn from the top of the acromion process to the superior border of the axilla at the pectoralis muscle (line A). Then a second line drawn perpendicular to line A from the suprasternal notch [line B]. The portion of line A that lay above the line B intersects line A will be termed as line C. AASI calculated by dividing the length of line C by that of line A (AASI = C/A). AASI value of >0.49 is considered as a good predictor for difficult visualization of larynx.

During endotracheal intubation the best laryngoscopy view will be noted according to the Cormack – Lehane (CL)grading system. Grade I = full glottis view; Grade IIa = glottis partly visible, anterior commissure not visualized; Grade IIb = Arytenoids or posterior part of the vocal cord just visible. Grade III = only epiglottis is visible; Grade IV = no epiglottis visualized. Visualization of CL Grades I and II was inferred as an easy visualization of the larynx (EVL) and CL Grades III and IV as difficult visualization of the larynx.


 
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