The Clinical Efficacy of Supraglottic Airway Device, Self-pressurized Air-Q Intubating Laryngeal Airway (ILA -SP) in Adult Patients: Comparison With Classic-laryngeal Airway (c-LMA)

Study Overview
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Brief Summary
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Supraglottic airway devices (SADs) are well established in anesthetic practice. Among these devices ,classic laryngeal airway has been typically widely used. The self-pressurised air-Q (air-Q) is newly developed supraglottic airway devices. It is a new single-use device that may optimise the airway sealing while reducing the potential for postoperative complications such as sore throat. The overall structure of the air-Q SP is identical to the original air-Q, except with regard to the inflatable cuff. The aim of this randomized trial was to compare the clinical performance of the classic LMA and the air-Q SP.

Conditions
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Surgery

Intervention / Treatment
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* Device: Insertion of C-LMA
* Device: Insertion of air-Q according


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Adult patients (20-75 of age) scheduled for elective surgery of short duration (less than 2 hr) undergoing general anesthesia using supraglottic airway Exclusion Criteria: Patients with a potentially difficult airway, risk of aspiration such as gastroesophageal reflux disease, or active upper respiratory tract infection

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: 1)C-LMA group<br> | Device: Insertion of C-LMA<br>* After induction of general anesthesia, C-LMA or Air-Q was inserted according to randomly allocated group.<br>|
| Active Comparator: 2)Air-Q group<br> | Device: Insertion of air-Q according<br>* After induction of general anesthesia, C-LMA or Air-Q was inserted according to randomly allocated group.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| airway leak pressure measured after device insertion | 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. | within 5min to 10 min insertion of each device | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Insertion time | Insertion time was defined as the time from the attending anesthesiologist picking up the LMA until the confirmation on capnography. | During and 1 min after insertion of each device | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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supraglottic airway devices, the classic laryngeal mask airway, the self-pressurised air-Q intubating laryngeal airway in adult patients, elective surgery of short duration (less than 2 hr) undergoing general anesthesia using supraglottic airway in adult patients