A Comparison of the I-gel and Self-pressurised Air-Q Intubating Laryngeal Airway (Air-Q sp) in the Elderly Patients

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, the i-gel has been typically widely used. The self-pressurised air-Q intubating laryngeal airway (air-Q sp) 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 similar to the original air-Q, except the inflatable cuff. The aim of this randomized trial was to compare the clinical performance of the i-gel and the air-Q sp in elderly patients

Conditions
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Supraglottic Airway Device

Intervention / Treatment
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* Device: Insertion of the i-gel
* Device: Insertion of the air-Q sp


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 1. elderly adult patients (65-90 of age) scheduled for elective surgery undergoing general anesthesia using supraglottic airway Exclusion Criteria: 1. 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: 65 Years
Maximum Age: 90 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

Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: the i-gel group<br>After induction of general anesthesia, the i-gel will be inserted according to randomly allocated group. | Device: Insertion of the i-gel<br>* After induction of general anesthesia, the i-gel will be inserted according to randomly allocated group.<br>|
| Active Comparator: the Air-Q sp group<br>After induction of general anesthesia, the air-Q sp will be inserted according to randomly allocated group. | Device: Insertion of the air-Q sp<br> <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 after insertion of each device | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| insertion parameters (insertion time and ease of insertion) | Insertion time was defined as the time from the attending anesthesiologist picking up the LMA until the confirmation on capnography. Ease of insertion was graded from 1 to 4. | 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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elective surgery, undergoing general anesthesia, elderly adult patients