Fiberoptic Evaluation of the LMA(Laryngel Mask Airway) Position During Anesthesia With Spontaneous Respiration or Controlled Ventilation in Children

N/ACompletedNCT02220075

Yonsei University100 enrolled

Overview

LMA(Laryngel Mask Airway) is useful for pediatrics surgery, and there are various methods of LMA insertion. When the investigators evaluate the LMA position, the investigators can use fiberoptic bronchoscope (Grade 1 to 4). For pediatric patients, clinical signs(airway pressure\<20cmH2O, expiratory CO2 level)are seen normal but the grade is 3 or 4. And this will bring high risk of aspiration. Recent studies reported the LMA position after general anesthesia induction not after operation. Therefore, the investigators will observe the LMA position three times; after general anesthesia induction, after caudal block, and after operation as well as the difference regarding to spontaneous and controlled ventilation.

Study Type

OBSERVATIONAL

Enrollment

100

Conditions

Pediatric Urologic Surgery

Eligibility

Sex: ALLMin age: 1 MonthMax age: 7 Years

Medical Language ↔ Plain English

Inclusion Criteria: 1. ASA physical status 1 or 2, 2. pediatric patients from 1month to 7 years old 3. under general anesthesia using LMA 4. getting informed consent from the guardian Exclusion Criteria: 1. difficult airway 2. airway diseases ; URI, asthma, pneumonia 3. not getting informed consent from the guardian

Locations (1)

Severance Hospital

Seoul, South Korea

Outcomes

Primary Outcomes

sucess rate of LMA insertion

Time frame: 1 hour

Secondary Outcomes

FOB(fiberoptic bronchoscope) grading of LMA position

Grade 1: only the larynx visible, Grade 2: larynz and epiglottis visible, Grade 3: epiglottis was impinging on the LMA grille, Grade 4: epiglottis was downfolded and the larynx could not be seen)

Time frame: 1 hour