The Role of Indirect Laryngoscopy, Clinical and Ultrasonographic Assessment in Prediction of Difficult Airway
Overview
- Phase
- N/A
- Intervention
- Not specified
- Conditions
- Difficult Intubation
- Sponsor
- Istanbul University
- Enrollment
- 140
- Locations
- 1
- Primary Endpoint
- Thickness of tongue root in centimeters.
- Status
- Completed
- Last Updated
- 6 years ago
Overview
Brief Summary
This study was designed to assess the success of indirect laryngoscopy and ultrasonographic measurements in the prediction of difficult airway. All patients were examined by indirect laryngoscopy and ultrasonography preoperatively and the predictive values for difficult airway of these methods were compared.
Detailed Description
Difficult airway is a condition that increases the patient's vital risk and leaves the anesthesia and surgical team in a difficult position. Failure to perform an adequate preoperative evaluation may result in the team being unprepared. Therefore, various methods have been investigated in the prediction of difficult airway from past to present. With the development of technology, imaging methods have become routine applications in clinical use. Ultrasonography and indirect laryngoscopy have been shown to be used in predicting difficult airway in the literature, but there is no study showing which is a better predictor.
Investigators
Hakan Kara
Resident
Istanbul University
Eligibility Criteria
Inclusion Criteria
- •Subject is operated in ear, nose and throat department.
- •Subject over the age of
- •Subject giving consent to participate in the study.
Exclusion Criteria
- •Subject under the age of 18
- •Subject with a history of radiotherapy in the head and neck region,
- •Subject with facial deformity,
- •Subject whose neck movements have been restricted by previous trauma or surgery,
- •Subject has laryngeal disease
- •Previously operated subject with known airway assessment
- •Morbidly obese subject with BMI\> 40
Outcomes
Primary Outcomes
Thickness of tongue root in centimeters.
Time Frame: Five minutes before induction of anesthesia.
The anesthesiologist, who is blind about indirect laryngoscopy findings and is experienced user of ultrasonography, measures thickness of tongue root.
Indirect Laryngoscopic Grade
Time Frame: The day before surgery
The otolaryngologist,who is blind about ultrasonographic airway measurements of patients, performs indirect laryngoscopy and evaluates the laryngeal view.
Cormack-Lehane Classification
Time Frame: Three minutes after induction of anesthesia.
The anesthesiologist, who is blind about indirect laryngoscopy findings and ultrasonographic airway measurements, performs intubation and evaluates the laryngeal view.
Epiglottis skin distance in centimeters.
Time Frame: Five minutes before induction of anesthesia.
The anesthesiologist, who is blind about indirect laryngoscopy findings and is experienced user of ultrasonography, measures epiglottis to skin distance.
Hyoid bone-skin distance in centimeters.
Time Frame: Five minutes before induction of anesthesia.
The anesthesiologist, who is blind about indirect laryngoscopy findings and is experienced user of ultrasonography, measures hyoid bone to skin distance.
Anterior commissure-skin distance in centimeters.
Time Frame: Five minutes before induction of anesthesia.
The anesthesiologist, who is blind about indirect laryngoscopy findings and is experienced user of ultrasonography, measures anterior commissure to skin distance.
Secondary Outcomes
- Thyromental distance in centimeters(The day before surgery)
- Mallampati classification(The day before surgery)
- Sternomental distance in centimeters.(The day before surgery)
- Neck circumference in centimeters.(The day before surgery)
- Body mass index (BMI)(The day before surgery)