The Effect of Ultrasonographic Airway Measurements and Anatomical Differences on Laryngeal Mask Placement in Young and Older Adults

ConditionsAirway Management Laryngeal Mask Airway Insertion Skill

Trial statusRecruiting

Trial phaseNot listed

Trial typeObservational

Biological sexAll

Age18+

SponsorDuzce University

About this trial

This prospective observational study aims to compare ultrasonographic upper-airway measurements and age-related anatomical differences between young adults (18-40 years) and older adults (\>65 years), and to evaluate their effects on laryngeal mask airway (LMA) placement success and position accuracy. Preoperative airway ultrasonography measurements will be assessed, followed by evaluation of LMA placement, ventilation efficacy, insertion attempts, placement time, and complications. Ultrasonography will also be used to assess LMA position after placement, with confirmation by leak testing and fiberoptic evaluation. Preoperative and postoperative gastric volume will additionally be assessed.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Patient or legally appropriate representative/relative accepts participation as applicable.

Surgery suitable for LMA placement.

Age 18-40 years or >65 years.

Disqualifiers

Pregnancy

Age <18 years

History of upper airway surgery

Gastroesophageal reflux disease, ulcer, or gastrointestinal bleeding history

Trial population

Adult patients scheduled for elective surgery under general anesthesia with planned laryngeal mask airway use will be enrolled. The study population will include two age-based groups: young adults aged 18-40 years with ASA physical status I-II, and older adults aged 65 years or above with ASA physical status I-III. Eligible participants will be patients with intact neck anatomy and clinical suitability for supraglottic airway management. Patients with BMI \>35 kg/m², pregnancy, known obstructive sleep apnea, significant neck deformity or prior diagnostic/therapeutic neck procedures, or mouth opening \<2.5 cm will be excluded.

Trial design

Design model

Cohort

Time perspective

Prospective

Treatments tested in this trial

Not listed

Trial groups

188 Participants

are grouped into 2 trial groups

Group A: young patient

Group B: older patient

Trial outcomes

Primary outcomes

First-attempt successful LMA placement rate

The primary outcome will compare the proportion of successful first-attempt ProSeal LMA placements between young and older adult groups.

Time frame

During LMA insertion

Sponsors and contacts

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Duzce University

Lead sponsor

Source ClinicalTrials.gov

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