The Effect of Ultrasonographic Airway Measurements and Anatomical Differences on Laryngeal Mask Placement in Young and Older Adults
2026年8月21日 更新者：Gizem Demir Şenoğlu、Duzce University
The Effect of Ultrasonographic Airway Measurements and Anatomical Differences on Laryngeal Mask Placement in Young and Older Adults: A Prospective Observational Study
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.
研究概览
详细说明
Laryngeal mask airway use is common in general anesthesia.
Age-related anatomical and physiological changes of the upper airway may influence LMA placement in older adults.
The study will prospectively evaluate patients undergoing procedures suitable for LMA placement at Düzce University Faculty of Medicine.
Participants will be divided into young adults (18-40 years) and older adults (>65 years).
Demographic, anthropometric, clinical airway assessment and ultrasonographic airway measurements will be recorded.
Following standardized induction, a ProSeal LMA will be placed by an anesthesia research resident with at least three years of experience.
The number of insertion attempts and placement time will be recorded.
LMA position will be assessed by ultrasonography and compared with leak testing and fiberoptic confirmation.
Ventilation parameters, cuff pressure, LMA position changes, gastric volume and postoperative complications will also be recorded.
研究类型
观察性的
注册 (估计的)
188
联系人和位置
本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。
学习联系方式
- 姓名：Zennur Güven, Assistant Researcher
- 电话号码：+90 5459740213
- 邮箱：zennurguven@gmail.com
学习地点
-
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Düzce
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Düzce、Düzce、土耳其（türkiye）
- 招聘中
- Düzce University
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接触：
- Gizem demir şenoğlu, Ass. Prof
- 电话号码：05059313588
- 邮箱：gizem123demir@hotmail.com
-
-
参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
- 成人
- 年长者
接受健康志愿者
不
取样方法
非概率样本
研究人群
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.
描述
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
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
队列和干预
团体/队列 |
|---|
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young patient
Young adult patients aged 18-40
|
|
older patient
Adult patients over the age of 65
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
First-attempt successful LMA placement rate
大体时间：During LMA insertion
|
The primary outcome will compare the proportion of successful first-attempt ProSeal LMA placements between young and older adult groups.
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During LMA insertion
|
合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始 (实际的)
2025年7月1日
初级完成 (估计的)
2027年7月30日
研究完成 (估计的)
2027年8月30日
研究注册日期
首次提交
2026年8月17日
首先提交符合 QC 标准的
2026年8月17日
首次发布 (实际的)
2026年8月20日
研究记录更新
最后更新发布 (实际的)
2026年8月24日
上次提交的符合 QC 标准的更新
2026年8月21日
最后验证
2026年8月1日
更多信息
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.