Lower Extremity Surgery, Minor Urologic Surgery
Conditions
Keywords
classic laryngeal mask airway, elderly patients
Brief summary
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.
Interventions
PROCEDUREclassic LMA insertion
Sponsors
Yonsei University
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
20 Years to 85 Years
Healthy volunteers
No
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| oropharyngeal leak pressure | 24 hours | 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. |
Countries
South Korea
Outcome results
None listed