Laryngeal Mask Airway Versus Air Q Laryngeal Airway

Study Overview
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Brief Summary
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Nowadays, supraglottic airway devices are simple and effective alternatives to endotracheal intubation. Both laryngeal mask airway LMA and air-Q airway are supraglottic airway devices that can be used to maintain and protect airways from aspiration of secretions and blood during DCR surgery. The present study was designed to compare standard LMA versus air Q as regards the sealing effect and aspiration of blood in DCR surgery.

Detailed Description
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72 patients were divided into two groups, 36 patients each, named LMA group, and air Q group according to supraglottic devices used. The following parameters were recorded in both studied groups, continuous Electrocardiography (ECG), heart rate (HR), means arterial pressure (MAP), arterial oxygen saturation (SpO2), end tidal carbon di-oxide (PCO2)..Oro pharyngeal leak pressure in (cmH2O), exhaled tidal volume in (ml), leak volume in (ml), leak fraction in (%) number of shifting from LMA to air Q or ETT and shifting from air Q to LMA or ETT was recorded with absence or presence of surgical blood on The undersurface of the device used.

Official Title
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Laryngeal Mask Airway Versus Air Q Laryngeal Airway in Dacryocystorhinostomy

Conditions
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Airway Devices

Intervention / Treatment
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* Device: LMA group
* Device: AirQ group


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Both sex Age: 18-60 years ASA I-II Patients scheduled for dacryocystorhinostomy surgery Exclusion Criteria: Any pathology of the neck, upper respiratory tract, upper alimentary tract Patients with a history of gastric regurgitation, heartburn Morbid obese, Patients with esophageal reflux (hiatus hernia) Anticipating difficult airway management Patients with coagulation disorders

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Supportive Care
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Parallel assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: LMA<br>36 patients were ventilated with LMA during dacryocystorhinostomy surgery | Device: LMA group<br>* patients were ventilated with LMA<br>|
| Active Comparator: AirQ<br>36 patients each were ventilated with air Q airway during dacryocystorhinostomy surgery | Device: AirQ group<br>* patients were ventilated with AirQ airway<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Oro pharyngeal leak pressure in (cmH2O) | By setting the pop-off valve to limit peak airway pressure to 40 cm H2O and allowing airway pressure to increase at a fresh gas flow of 3 L/min until audible noise was heard over the mouth and no further increase in airway pressure is observed. | Just after insertion of supraglottic airway devices | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Leak fraction in (%) | Leak fraction in (%)( Leak was calculated by subtracting the expiratory volume from the inspiratory volume and expressed as a fraction of the inspiratory volume). were evaluated just before surgery | Just after insertion of supraglottic airway devices | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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AirQ, LMA, dacrocystorhinostomy surgery