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CTRI Number  CTRI/2025/11/097226 [Registered on: 11/11/2025] Trial Registered Prospectively
Last Modified On: 08/11/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cross Sectional Study 
Study Design  Single Arm Study 
Public Title of Study   A study to assess how effective ultrasound is in confirming correct placement and position of a breathing tube(endotracheal tube) in adult patients receiving general anaesthesia  
Scientific Title of Study   Efficacy of ultrasound in confirmation of Endotracheal Intubation and position in adult patients undergoing general anaesthesia: a cross-sectional 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  Richardson Thongam 
Designation  Post graduate trainee  
Affiliation  Regional Institute of Medical Sciences  
Address  Department of Anaesthesiology Regional Institute of Medical Sciences Imphal Manipur

Imphal West
MANIPUR
795001
India 
Phone  8119875023  
Fax    
Email  thongamrichardson@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Richardson Thongam 
Designation  Post graduate trainee  
Affiliation  Department of Anaesthesiology Regional Institute of Medical Sciences  
Address  Department of Anaesthesiology Regional Institute of Medical Sciences Imphal Manipur

Imphal West
MANIPUR
795001
India 
Phone  8119875023  
Fax    
Email  thongamrichardson@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr L Chaoba Singh 
Designation  Professor 
Affiliation  Regional Institute of Medical Sciences Imphal Manipur 
Address  Department of Anaesthesiology Regional Institute of Medical Sciences Imphal Manipur

Imphal West
MANIPUR
795001
India 
Phone  9436022521  
Fax    
Email  drchaoba@gmail.com  
 
Source of Monetary or Material Support  
Department of Anaesthesiology Regional Institute of Medical Sciences Imphal Manipur India 795001 
 
Primary Sponsor  
Name  Regional Institute of Medical Sciences  
Address  Department of Anaesthesiology Regional Institute of Medical Sciences Imphal Manipur 795001 
Type of Sponsor  Government 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 Richardson Thongam  Regional Institute of Medical Sciences Imphal Manipur  Operation Theatre Complex Department of Anaesthesiology Regional Institute of Medical Sciences Imphal Manipur
Imphal West
MANIPUR 
8119875023

thongamrichardson@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Research Ethics Board Regional Institute of Medical Sciences Imphal Manipur  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: 4||Measurement and Monitoring,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  1. Patients of age group 18 to 60years.

2. Patients of any gender

3. Patients of American Society of Anaesthesiologists Physical State (ASA) grade I or II.

4. Mallampati grade I & II
 
 
ExclusionCriteria 
Details  1. Patients with active infections or burns over the neck
2. Pregnant females
3. Patients with suspected or diagnosed cervical spine instability
4. Patients with active upper respiratory tract infection
5. Patients with congenital upper airway anomalies
6. Patients with body mass index (BMI) more than or equal to 30kgm-2
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
• To evaluate the efficacy of upper airway ultrasound for confirmation of successful endotracheal intubation.
• To determine the accuracy of the ultrasound image confirming the proper depth of the endotracheal tube.
 
At baseline 
 
Secondary Outcome  
Outcome  TimePoints 
NIL  NIL 
 
Target Sample Size   Total Sample Size="51"
Sample Size from India="51" 
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)   15/12/2025 
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="2"
Months="0"
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  

Endotracheal intubation is a fundamental component of airway management in both elective surgeries and emergency care. Ensuring correct placement of the endotracheal tube (ETT) is essential, as malposition can lead to severe complications. An optimal ETT placement should ensure sufficient distance (2-5 cm) between the tip of the ETT and the carina. Upper airway ultrasonography being used in real time during intubation to detect tracheal placement by the loss of “snowstorm sign” and to assess ETT depth using a saline-filled cuff technique. The ultrasound of saline-filled cuff technique is a rapid and reliable method, involves no radiation, requires no patient positioning, and can be done as many times as needed.

This study will be a prospective observational clinical trial to assess the efficacy of ultrasound in confirmation of endotracheal tube intubation and confirmation of endotracheal tube position in adult patients undergoing general anaesthesia. After approval from the Research Ethics Board of RIMS, Imphal, a total number of 51 patients (18-60 years, ASA I and II, Mallampati class I and II) will be enrolled after taking written informed consent from the patients. Endotracheal intubation will be performed under suitable conditions. With upper airway ultrasound, confirmation of the endotracheal intubation using linear probe (4-12 Hz) in real time during intubation by detecting loss of snow storm sign and double trachea sign will be done. After confirmation of endotracheal intubation 10 ml of normal saline will be infused into the cuff and proximal end of the saline filled cuff of the endotracheal tube will be fixed at T3in neutral head and neck position. Tip to carina distance will be measured using flexible fiberoptic bronchoscope.

Presence or absence of Snow storm sign, Double trachea sign, Wave capnography, tip to Carina distance will be observed as outcomes. Data will be recorded will be analyzed using SPSS V.26.0 (Chicago, Illinois, USA)software. Ap value of < 0.05 will be considered statistically significant.

 
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