Ultrasound Measurements and Age-Related Anatomy to Guide LMA Placement

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This prospective observational study compares ultrasonographic airway measurements and age-related anatomical differences between adults aged 18-40 and those over 65, and examines their impact on laryngeal mask airway placement. After preoperative airway ultrasound, an experienced anesthesia resident will place a ProSeal LMA and record insertion attempts, placement time, ventilation efficacy, cuff pressure, and any complications. LMA position will be confirmed with ultrasound, leak testing, and fiberoptic evaluation, with gastric volume assessed pre- and postoperatively. Data will be collected from procedures suitable for LMA at Düzce University to explore whether age-related anatomy influences placement success and accuracy.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Patient or legally appropriate representative/relative accepts participation as applicable.
* Surgery suitable for LMA placement.
* Age 18-40 years or \>65 years.

Exclusion Criteria:

* Pregnancy
* Age \<18 years
* History of upper airway surgery
* Gastroesophageal reflux disease, ulcer, or gastrointestinal bleeding history
* Inadequate fasting duration
* Emergency surgery
* Requirement for nasogastric tube placement
* Unstable teeth
* Mouth opening \<3 cm
* Recent pulmonary infection
* Recent upper airway infection
* Pulmonary disease associated with increased airway pressures (cystic fibrosis, COPD, interstitial lung disease)
* Restricted cervical movement / inability to achieve required extension
* Ultrasound gel allergy
* Refusal to participate

Where it's running

• Duzce University
  Düzce, Düzce, Turkey (Türkiye) Recruiting

Study contacts

• Study coordinator: Zennur Güven, Assistant Researcher
• Email: zennurguven@gmail.com
• Phone: +90 5459740213

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.