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CTRI Number  CTRI/2024/02/063217 [Registered on: 27/02/2024] Trial Registered Prospectively
Last Modified On: 05/02/2024
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cross Sectional Study 
Study Design  Single Arm Study 
Public Title of Study   Use of ultrasound in assessment of difficult airway  
Scientific Title of Study   Role of ultrasound in identifying patients at risk for difficult mask ventilation and intubation based on tongue thickness: a prospective observational study 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Seetepalli Venkata Naga Sai Krishna 
Designation  junior resident  
Affiliation  Kasturba medical college- Manipal 
Address  Department of Anesthesiology, Kasturba medical college and Hospital, Manipal-576104, Karnataka.

Udupi
KARNATAKA
576104
India 
Phone  09701457950  
Fax    
Email  seethepalli.sai@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Rama Rani K 
Designation  Associate professor  
Affiliation  Kasturba medical college- Manipal 
Address  Department of Anesthesiology, Kasturba medical college and Hospital, Manipal-576104, Karnataka.

Udupi
KARNATAKA
576104
India 
Phone  9902938044  
Fax    
Email  rama.rani@manipal.edu  
 
Details of Contact Person
Public Query
 
Name  Rama Rani K 
Designation  Associate professor  
Affiliation  Kasturba medical college- Manipal 
Address  Department of Anesthesiology, Kasturba medical college and Hospital, Manipal-576104, Karnataka.

Udupi
KARNATAKA
576104
India 
Phone  9902938044  
Fax    
Email  rama.rani@manipal.edu  
 
Source of Monetary or Material Support  
Kasturba hospital and medical college, Manipal-576104, Karnataka. 
 
Primary Sponsor  
Name  seetepalli venkata naga sai krishna 
Address  Department of Anesthesiology, Kasturba medical college and Hospital, Manipal-576104, Karnataka. 
Type of Sponsor  Other [self] 
 
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 Seetepalli venkata naga sai krishna  KASTURBA HOSPITAL AND MEDICAL COLLEGE   Department of Anesthesiology, Kasturba medical college and Hospital, Manipal-576104, Karnataka.
Udupi
KARNATAKA 
09701457950

seethepalli.sai@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Kasturba medical college and Kasturba hospital institutional ethics committee-2 (student research)  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  70.00 Year(s)
Gender  Both 
Details  all patients undergoing elective surgery under general anesthesia with asa physical score 3 or less with BMI less than 30 are included 
 
ExclusionCriteria 
Details  patients with identified difficult airway and with risk of aspiration are excluded 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
use of ultrasound measured tongue thickness as predictor of difficult mask ventilation   Tongue Thickness is measured using ultrasound preoperatively and compared with difficulty in mask ventilation immediately after induction with general anaesthesia  
 
Secondary Outcome  
Outcome  TimePoints 
Correlation of ultrasound measured tongue thickness with difficult intubation   Tongue thickness is measured preoperatively using ultrasound & compared with intubation difficulty immediately after induction with general anaesthesia & after mask ventilation 
 
Target Sample Size   Total Sample Size="125"
Sample Size from India="125" 
Final Enrollment numbers achieved (Total)= "125"
Final Enrollment numbers achieved (India)="125" 
Phase of Trial   N/A 
Date of First Enrollment (India)   01/03/2024 
Date of Study Completion (India) 04/05/2025 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="1"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Completed 
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    Unanticipated difficult airway is significant challenge for an anaesthesiologist and inability to establish a secured airway can lead to morbidity and mortality. There are many clinical parameters described to identify difficult mask ventilation and intubation which includes obesity, elderly patients, abnormality of teeth, presence of beard, Mallampati score, thyromental distance, mouth opening. However, the ability of these parameters to accurately predict difficult airway is still poor. In recent times, seeking a more accurate method for predicting difficult airway management has become necessary, and ultrasound has emerged as a promising option due to its non-invasive nature, costeffectiveness, and ease of handling. The role of ultrasound measured tongue thickness in predicting difficult mask ventilation and intubation has been studied infrequently. 
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