The Difference of Oropharyngeal Leak Pressure and Sealing Pressure Between New Supraglottic Airway Devices

National Taiwan University Hospital90 enrolled

Overview

The difference of oropharyngeal leak pressure and sealing pressure between new supraglottic airway devices.

In this clinical study, investigators want to discuss the issue that oropharyngeal leak pressure and sealing condition with different SGA including air-Q、i-gel、LMA-supreme、AMBU auragain 、ProSeal LMA and other new SGAs. In the perioperative period, investigators documented respiratory function data including oropharyngeal leak pressure and peak airway pressure in these randomly selected SGA. Oropharyngeal leak pressure was measured by closing the expiratory valve of the circle system at fixed O2 flow 3L/min and noting the airway pressure at which the dial on a calibrated aneroid manometer reached equilibrium. investigators wanted to compared the respiratory function between air-Q、i-gel、LMA-supreme、AMBU auragain、ProSeal LMA and other new SGAs during surgery and postoperative care unit.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Oropharyngeal Leak Pressure

Eligibility

Sex: FEMALEMin age: 20 YearsMax age: 80 Years

Medical Language ↔ Plain English

Inclusion criteria: 1. 20-80 years old. 2. ASA physical status I or II . 3. Without major organ dysfunction like heart, liver, brain, lung, kidney function failure. Exclusion criteria: 1. BMI\> 35 kg/m2. 2. Risk of aspiration(NPO clear water\> 2 hours, solid foods \> 8 hours). 3. Difficult airway like head and neck tumor or airway tumor. 4. Limited mouth opening (\<2cm). 5. major organ dysfunction including heart, liver, brain, lung, kidney function failure. 6. Major surgery including open heart surgery, laparotomy general surgery, open chest surgery.

Locations (1)

National Taiwan University Hospital

Taipei, Taiwan

RECRUITING

Outcomes

Primary Outcomes

Oropharyngeal leak pressures

oropharyngeal leak pressure units ( cmH2O )

Time frame: 10 minutes

Secondary Outcomes

1. The participant's head and neck position 2. The number of attempts required for SGA insertion 3. Ease of gastric tube placement 4. The ventilation score

1. The participant's head and neck position (neutral/extension/flexion/rotation) 2. The number of attempts required for SGA insertion (1/2/3/tracheal intubation) 3. Ease of gastric tube placement (success/failure/Leak) 4. The ventilation score was scored from 0 to 3 based on three criteria: (1) No leakage with an airway pressure of \> 15 cm H2O (2) Bilateral chest excursions with a peak inspiratory pressure of \> 20 cm H2O (3) A Square Wave Capnography with each item scoring 0 or 1 point. Thus, if all three criteria were satisfied, the ventilation score was 3.

Time frame: 180 minutes

Central Contacts

Liu Chih Min

CONTACT

02-23123456 liu.chihmin@gmail.com

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.