Ultrasound Airway Examination as a Tool for Detection of Difficult Intubation in Adult Patients

Not yet recruiting

• Conditions: Difficult Airway

• Registration Number: NCT06700265
• Lead Sponsor: National Cancer Institute, Egypt

Brief Summary

the goal of the observational study to measure the effectiveness of neck ultrasound in prediction of difficult intubation in adult patients

Detailed Description

All participant undergoing elective surgery under general anesthesia will go a detailed preoperative sonographic assessment by the anesthesiologist who has experience in airway ultrasound for measurement of Hyomental distance, thyrohyoid distance, thyroid cricoid, anterior soft tissue thickness at levels of hyoid bone, cricoid cartilage and vocal cord and all measurement will be measured in neutral and sniffing position.

after induction of general anesthesia intubation will done by macintosh laryngoscope and degree of difficulty of intubation will be measured by cormack-lehane classification without any external manipulation

Study Timeline

• Status Verified: 2024-10
• Study First Submitted: 2024-11-11
• Study First Submitted QC: 2024-11-19
• Last Update Submitted: 2024-11-19
• Study First Posted: 2024-11-21
• Last Update Posted: 2024-11-21
• Study Start: 2024-12
• Primary Completion: 2025-12
• Study Completion: 2025-12-01

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 246

Inclusion Criteria

• Adult patients above18 years old
• Both sex
• Requiring general anesthesia with endotracheal intubation

Exclusion Criteria

• Emergency surgery,
• patients with limited mouth, head or neck movement,
• patients with temporomandibular joint impairment,
• fracture or tumors of mandible,
• patients requiring awake intubation,
• uncooperative patients,
• any cervical spine limitation movement
• neck swelling or tumor
• Prominent teeth deformities.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
measurement of effectiveness of neck ultrasound use of ultrasound measurement in prediction of difficult intubation	30 min after ultrasound measurements at time of induction of anesthesai	In cormack lehan classification of laryngoscopy view

Secondary Outcome Measures

Name	Time	Method
Anterior soft tissue thickness at level of epiglottis in sniffing position	30 min before operation	In centimetres
Anterior soft tissue thickness at level of vocal cord in sniffing position	30 min before operation	In centimetres
Anterior soft tissue thickness at level of hyoid bone in sniffing position	30 min before operation	In centimetres
Hyomental distance in sniffing position	30 min before operation	In centimetres
Thyrohyoid distance in sniffing position	30 min before operation	In centimetres
Cricothyroid distance in sniffing position	30 minutes before operation	In centimetres
Hyomental distance in neutral position	30 min before operation	In centimetres
Throhyoid distance in neutral position	30 min before operation	In centimetres
Cricothyriod distance in neutral position	30 min before operation	In centimetres
Anterior soft tissue thickness at level of hyoid bone in neutral position	30 min before opeqrtio	In centimetres
Anterior soft tissue thickness at level of epiglottis in neutral position	30 min befor operation	In centimetres
Anterior soft tissue thickness at level of vocal cord in neutral position	30 min before operation	In centimetres