A Randomized Prospective Controlled Trial Comparing the Laryngeal Tube Suction Disposable and the Supreme Laryngeal Mask Airway: The Influence of Head and Neck Position on Oropharyngeal Seal Pressure
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Adverse Anesthesia Outcome
- Sponsor
- Bnai Zion Medical Center
- Enrollment
- 160
- Primary Endpoint
- Primary outcome oropharyngeal seal pressures, in cm H2O
- Status
- Completed
- Last Updated
- 9 years ago
Overview
Brief Summary
The investigators study compared the Laryngeal Tube Suction-Disposable with the Supreme Laryngeal Mask Airway, hypothesizing that the two devices would provide adequate oropharyngeal seal pressure in different head and neck positions and perform similarly during pressure controlled ventilation in neutral position, despite differences in their structural design.
Detailed Description
Laryngeal Tube Suction Disposable, LTS-D (VBM Medizintechnik GmbH , Sulz, Germany) and Supreme Laryngeal Mask Airway, SLMA (Intavent Orthofix, Maidenhead, UK) are second generation, single-use, supraglottic airway devices( SADs), with added gastric access, for use in spontaneously and mechanically ventilated patients undergoing general anesthesia. The effectiveness of the LTS-D and the SLMA has been well established; however, the oropharyngeal seal pressure of both devices in different head/neck positions and the performance of these devices using positive pressure ventilation have not been evaluated. Changing the head/neck position can alter the sealing capabilities of the SAD. To the investigators best knowledge there are no studies comparing the oropharyngeal seal pressure in different head and neck position when using these devices.
Investigators
LUIS.GAITINI
M.D.
Bnai Zion Medical Center
Eligibility Criteria
Inclusion Criteria
- •Patients ASA I and II with normal airways, for minor elective surgical
Exclusion Criteria
- •Age \<18 yr, weight \<50 kg, or \> 100 kg , a known difficult airway, active gastro esophageal reflux disease
Outcomes
Primary Outcomes
Primary outcome oropharyngeal seal pressures, in cm H2O
Time Frame: 5 min
Oropharyngeal leak pressure was determined by closing the expiratory valve of the anesthesia breathing system and a fixed gas flow of the 3 liters minute. The airway pressure at which an equilibrium was reached was noted( maximun allowed 40 cm H2O)
Secondary Outcomes
- Fiberoptic position(5 min)