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Thyromental Height Test Versus Sternomental Displacement in Elderly

NCT05414214 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 150

Last updated 2022-09-15

No results posted yet for this study

Summary

The study is designed to evaluate the validity of the SMDD as a predictor of difficult airway in elderly and to compare its validity with that of the TMHT.

Conditions

  • Difficult Airway

Interventions

PROCEDURE

Thyromental Height Test

Thyromental Height Test (TMHT) : will be measured while a patient is lying supine with the head and neck are maintained in a neutral position using a pillow under the head. By using a digital depth gauge, the TMH is the vertical distance measured between the anterior border of the thyroid cartilage directly on the thyroid notch and the anterior border of the mentum.

PROCEDURE

Sternomental displacement

Sternomental displacement (SMDD): While the patient is sitting with the head in a neutral position, SMD-neutral will be measured using a tape as the distance between upper borders of the manubrium sterni and the mentum. The SMD-extension will then be measured in the same way with the head extended on the neck. The difference between SMD-extension and SMD-neutral will then be calculated as SMDD.

PROCEDURE

General anesthesia

patients will be pre-oxygenated with 100% oxygen for 3 minutes, anesthesia will be then induced intravenously using fentanyl 2 μg/kg, propofol 1 -1.5 mg/kg, and succinylcholine 1 mg/kg lean body weight. Mask ventilation will be maintained till complete muscle relaxation guided by a peripheral nerve stimulator. Using Macintosh laryngoscopy, an anesthetist who has at least three years experience and who will be blinded to the preoperative tests' results, determined the best laryngeal view by using Cormack-Lehane (CL) grading system from I-IV. External neck manipulation will be used when needed to obtain the best laryngoscopic view. Endotracheal intubation will then be accomplished. The number and duration of intubation attempts will be recorded.

Sponsors & Collaborators

  • Cairo University

    lead OTHER

Principal Investigators

  • Abeer Ahmed, MD · Cairo University

Eligibility

Min Age
65 Years
Max Age
90 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2022-06-10
Primary Completion
2022-08-20
Completion
2022-09-10

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05414214 on ClinicalTrials.gov