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CTRI Number  CTRI/2025/08/093233 [Registered on: 19/08/2025] Trial Registered Prospectively
Last Modified On: 18/08/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cohort Study 
Study Design  Single Arm Study 
Public Title of Study   "Using Ultrasound to Predict Breathing Mask Difficulties Before Surgery"  
Scientific Title of Study   Pre-operative Palatoglossal space evaluation by ultrasonography to predict difficult mask ventilation -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  Kishan Shimpi 
Designation  Junior resident  
Affiliation  SDM College of medical sciences and hospitals  
Address  S/o Ashok shimpi At post shivalli Taluq Dharwad Dist Dharwad

Dharwad
KARNATAKA
580112
India 
Phone  7619144667  
Fax    
Email  kishanshimpi88@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Shilpa Agnihotri  
Designation  Additional professor  
Affiliation  SDM College of Medical Sciences and Hospital Dhawad 
Address  Department of anaesthesiology, SDM college of medical sciences and hospital, Dharwad.

Dharwad
KARNATAKA
580009
India 
Phone  9986066030  
Fax    
Email  docshilpa04@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Shilpa Agnihotri  
Designation  Additional professor  
Affiliation  SDM College of Medical Sciences and Hospital Dhawad 
Address  Department of anaesthesiology, SDM college of medical sciences and hospital, Dharwad.

Dharwad
KARNATAKA
580009
India 
Phone  9986066030  
Fax    
Email  docshilpa04@gmail.com  
 
Source of Monetary or Material Support  
SDM College of medical sciences and hospital sattur dharwad 
 
Primary Sponsor  
Name  SDM COLLEGE OF MEDICAL SCIENCES AND HOSPITAL SATTUR DHARWAD  
Address  SDM college of medical sciences and hospital, Sattur, Dharwad. 
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 
Kishan Shimpi  SDM college of medical sciences and hospital   Main OT complex and superspeciality OT complex, SDM college of medical sciences and hospital, Sattur, Dharwad.
Dharwad
KARNATAKA 
7619144667

kishanshimpi88@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
IEC SDM college of medical science   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  Nil  Nil 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  Patients undergoing elective surgeries under general anaesthesia requiring endotracheal tube.
ASA physical status 1,2,3.
 
 
ExclusionCriteria 
Details  Modified anaesthesia protocol or cancellation of endotracheal intubation.
Patients with orofacial deformity or trauma.
Patients with established difficult airway. 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
We are expecting better prediction of difficult mask ventilation by measuring palatoglossal space allowing anesthesiologist to be prepared with necessary equipments and procedure  Primary outcome will be assessed at baseline and 30seconds to 1 minutes after bag and mask ventilation  
 
Secondary Outcome  
Outcome  TimePoints 
Nil  Nil 
 
Target Sample Size   Total Sample Size="130"
Sample Size from India="130" 
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)   29/08/2025 
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  
This prospective observational study includes 130 patients undergoing elective surgeries under general anaesthesia with endotracheal intubation at a tertiary care teaching hospital. It aims to assess airway parameters especially palatoglossal space PGS via ultrasound to predict difficult mask ventilation DMV and difficult intubation. Preoperative evaluation includes demographics BMI airway assessment with mouth opening Modified Mallampati grading and PGS measurement. After induction with fentanyl propofol and vecuronium mask ventilation is graded using Han scale and intubation is performed by a trained anaesthesiologist. Cormack Lehane CL grading is noted. DMV is defined as Han grade 3 or more and difficult intubation as CL grade 2B or more or requiring adjuncts like a bougie. The study correlates ultrasound based PGS measurements with airway management outcomes.
 
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