A STUDY TO MEASURE A PARAMETER IN NECK TO HELP IDENTIFY THE DIFFICULT LEVEL TO PUT BREATHING TUBE BEFORE SURGERY

Not yet recruiting

Conditions: Medical and Surgical,

Registration Number: CTRI/2023/04/051981

Lead Sponsor: DR MOHAN KUMAR K S

Brief Summary: After obtainingapproval from the Institutional Ethics Committee and written informed consentwill be taken from the eligible patients with AmericanSociety of Anesthesiologistsâ€™ physical status (ASA PS) I and IIscheduled to undergo elective surgery requiring endotracheal intubation will beenrolled in this prospective observational single-centre study. Each patientwill be assessed before surgery for AASI. During endotracheal intubation thebest laryngoscopy view will be noted according to the Cormack â€“ Lehane (CL)grading system.

AASI will be measured with the patients lying insupine position and the upper limbs resting by the side of the body. Using aruler, a vertical line drawn from the top of the acromion process to the superiorborder of the axilla at the pectoralis muscle (line A). Then a second linedrawn perpendicular to line A from the suprasternal *notch* [line B]. Theportion of line A that lay above the line B intersects line A will be termed asline 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 fordifficult visualization of larynx.

During endotrachealintubation the best laryngoscopy view will be noted according to the Cormack â€“Lehane (CL)grading system. Grade I = full glottis view; Grade IIa = glottispartly visible, anterior commissure not visualized; Grade IIb = Arytenoids orposterior part of the vocal cord just visible. Grade III = only epiglottis isvisible; Grade IV = no epiglottis visualized. Visualization of CL Grades I andII was inferred as an easy visualization of the larynx (EVL) and CL Grades IIIand IV as difficult visualization of the larynx.

Detailed Description: Not available

Recruitment & Eligibility

Status: Not Yet Recruiting

Sex: All

Target Recruitment: 250

Inclusion Criteria

Patients belonging to American Society of Anesthesiologistsâ€™ physical status (ASA PS) I and II.

Exclusion Criteria

Patients with clinically predicted difficult airway, Patients with body mass index >30 kg/m2, Obstetric patients,.

Study & Design

Study Type: Observational

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
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 â€“ Lehane grading.	Preoperative period and during endotracheal intubation

Secondary Outcome Measures

Name	Time	Method
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

Trial Locations

Locations (1): DR B R AMBEDKAR MECIAL COLLEGE AND HOSPITAL
🇮🇳
Bangalore, KARNATAKA, India
DR B R AMBEDKAR MECIAL COLLEGE AND HOSPITAL
🇮🇳Bangalore, KARNATAKA, India
DR MOHAN KUMAR K S
Principal investigator
9538350911
drmohankote@gmail.com