The Clinical Efficacy of Laryngeal Mask Airway in Elderly Patients: Comparison With Young Adults

Yonsei University100 enrolled

Overview

There are some differences between elderly and young adult patients regarding the anatomy of upper airways. Elderly patients have larger upper airways than young adult patients at all pharyngeal levels as revealed by CT. Another study explained that there is a progressive descent of the larynx and epiglottis with aging, which lengthens the upper airway and possibly makes it more likely to collapse. The aim of this study is to compare the clinical efficacy of laryngeal mask airway (LMA) in elderly patients with young adults. In this study, the investigators will measure the ease of insertion, success rate of insertion, the time of insertion, oropharyngeal leak pressure, gastric leak pressure, fiberoptic position and intraoperative complications of the classic LMA.

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

100

Conditions

Minor Urologic Surgery Lower Extremity Surgery

Interventions

Eligibility

Sex: ALLMin age: 20 YearsMax age: 85 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Patients aged 20-40 and 65-85years * ASA status 1-2 * Undergoing minor urologic surgery or lower extremity surgery * Undergoing general anesthesia using classic LMA Exclusion Criteria: * Predicted difficult airway * Increased risk of aspiration * Gastroesophageal reflux * Neuromuscular disease * Significant acute or chronic lung disease

Outcomes

Primary Outcomes

oropharyngeal leak pressure

After successful placement of LMA, airway leak pressure was determined by adjusting the expiratory valve of the breathing circle to 40 cmH2O(fixed fresh gas flow 3 L/min) and recording the pressure when equilibrium was reached.

Time frame: 24 hours