The Effect of Thyromental Height and Other Difficult Airway Evaluation Parameters

The Effect of Thyromental Height and Other Difficult Airway Evaluation Parameters on Laryngeal Mask Placement Success Rate in Elderly Patients

Many changes occur in the body with age. There are difficulties in endotracheal intubation and the placement of supraglottic airway devices (LMA) in elderly patients due to changes in the tooth and facial structure, and a decrease in temporomandibular joint and neck movements. In the literature, there are studies on the relationship between thyromental height measurement and endotracheal intubation difficulty, but there is no study on the relationship between thyromental height measurement and laryngeal mask placement difficulty.

Study Overview

• Status: Recruiting
• Conditions: Airway Complication of Anesthesia
• Intervention / Treatment: Diagnostic test: Thyromental Height

Detailed Description

Age, gender, height, body weight, body mass index, type of operation, and Mallampati score are recorded in the preoperative evaluations of all patients. For anthropometric measurements, thyromental height, thyromental distance, sterno-mental distance, neck circumference, and mouth opening are measured. After the laryngeal mask is placed after the induction of anesthesia, the location of the LMA is checked with the FOB (fiberoptic bronchoscopy). Ease of insertion was subjectively assessed using a grading score of 1-4 (1, no resistance; 2, mild resistance; 3, moderate resistance; 4, inability to insert the device) by the attending anesthesiologist who inserted the device. After successful placement of the device, the adjustable pressure limiting (APL) valve is adjusted to 30 cm H2O at 3L/minute fresh gas flow, and the airway pressure and leakage amount are measured.

• Study Type: Observational
• Enrollment (Anticipated): 100

Contacts and Locations

• Study Contact: Name: savaş altınsoy; Phone Number: +903125962523; Email: savasaltinsoy@gmail.com

Study Locations

• Turkey
  • Ankara, Turkey, 06450
    • Recruiting
    • Department of Anesthesiology and Reanimation, University of Health Sciences, Diskapi Yıldırım Beyazit Training and Research Hospital
    • Contact: savaş altınsoy; Phone Number: +903125962523; Email: savasaltinsoy@gmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 65 years to 90 years (Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

all patients between 65-90 years old who had urological procedure

Description

Inclusion Criteria:

• over 65 years old
• elective operation
• using laryngeal mask device

Exclusion Criteria:

• younger than 65 years old
• urgent or emergency operation
• morbidity obese
• contraindications of all laryngeal mask devices using

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
laryngeal mask placement success	The correlation between preoperative thyromental height measurement and laryngeal mask placement success	during insertion

Collaborators and Investigators

• Sponsor: Diskapi Yildirim Beyazit Education and Research Hospital

Study record dates

Study Major Dates

• Study Start (Actual): July 1, 2022
• Primary Completion (Actual): July 30, 2022
• Study Completion (Anticipated): January 30, 2023

Study Registration Dates

• First Submitted: December 21, 2022
• First Submitted That Met QC Criteria: December 21, 2022
• First Posted (Estimate): January 6, 2023

Study Record Updates

• Last Update Posted (Estimate): January 6, 2023
• Last Update Submitted That Met QC Criteria: December 21, 2022
• Last Verified: December 1, 2022

More Information

Terms related to this study

• Other Study ID Numbers: LMA

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No