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

National Cancer Institute, Egypt246 enrolled

Overview

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

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 Type

OBSERVATIONAL

Enrollment

246

Conditions

Difficult Airway

Eligibility

Sex: ALLMin age: 18 YearsMax age: 70 YearsHealthy volunteers:

Medical Language ↔ Plain English

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.

Locations (1)

Cairo University

Cairo, Cairo Governorate, Egypt

Outcomes

Primary Outcomes

measurement of effectiveness of neck ultrasound use of ultrasound measurement in prediction of difficult intubation

In cormack lehan classification of laryngoscopy view

Time frame: 30 min after ultrasound measurements at time of induction of anesthesai

Secondary Outcomes

Hyomental distance in neutral position

In centimetres

Time frame: 30 min before operation

Throhyoid distance in neutral position

In centimetres

Time frame: 30 min before operation

Cricothyriod distance in neutral position

In centimetres

Time frame: 30 min before operation

Anterior soft tissue thickness at level of hyoid bone in neutral position

In centimetres

Time frame: 30 min before opeqrtio

Anterior soft tissue thickness at level of epiglottis in neutral position

In centimetres

Time frame: 30 min befor operation

Anterior soft tissue thickness at level of vocal cord in neutral position

In centimetres

Time frame: 30 min before operation

Hyomental distance in sniffing position

In centimetres

Time frame: 30 min before operation

Thyrohyoid distance in sniffing position

Data from ClinicalTrials.gov

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