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Our study aimed to compare the gastric insufflation volume between Ambu AuraGain and i-gel and its relationship with the oropharyngeal sealing pressure and the incidence of postoperative complications in generally anesthetized controlled-ventilated pediatric patients undergoing elective orthopedic operations.
Supraglottic Airway Devices (SADs) refer to a wide range of medical devices that can act as a passageway for oxygenation, ventilation, and administration of anesthetic gases and may be deemed an alternative to Endotracheal Tubes (ETTs).
Oropharyngeal sealing pressure (OLP) provides insight into the risk of gastric insufflation and aspiration risk. It is considered a measure of adequate performance and successful placement based on the premise that the SAD is sited properly in the hypopharynx after blind placements, and it is a useful comparator between SADs.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Ambu Auragain group | Experimental | Ambu Auragain was inserted after induction. |
|
| I-gel group | Experimental | The I-gel device was inserted after induction. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Ambu Auragain | Device | Ambu Auragain was inserted after induction. |
| |
| Measure | Description | Time Frame |
|---|---|---|
| Gastric antrum cross-sectional area (CSA) | Gastric antrum cross-sectional area (CSA) was measured before induction of general anesthesia, before supraglottic airway devices (SAD) insertion, after Ryle's tube insertion, and at the end of surgery before SAD removal. | At the end of surgery before supraglottic airway devices removal (5 min) |
| Measure | Description | Time Frame |
|---|---|---|
| Oropharyngeal leak pressure | Oropharyngeal leak pressure was determined after confirmation of adequate device insertion and secure taping by closing the adjustable pressure-limiting (APL) valve with a fresh gas flow of 3 l/min and observing the airway pressure at which equilibrium was attained in the aneroid manometer (airway pressure was not allowed to exceed 40cmH2O) or when there was audible air leak from the throat which was auscultated in the neck with a stethoscope placed just beside the thyroid cartilage. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Aya N Farahat, MBBCH | Contact | 00201552122249 | aya.nabil311.nabil@gmail.com |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Tanta University | Recruiting | Tanta | El-Gharbia | 31527 | Egypt |
The data will be available upon a reasonable request from the corresponding author after the end of study for one year.
After the end of study for one year.
The data will be available upon a reasonable request from the corresponding author.
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| I-gel |
| Device |
The I-gel device was inserted after induction. |
|
| Intraoperatively |
| Time of insertion of supraglottic airway devices | Insertion time was measured in seconds and counted from the time of opening the jaw to the appearance of the capnography waveform. | Intraoperatively |
| Number of attempts for insertion | Three insertion attempts were allowed. Each 'attempt' was defined as reinsertion of the airway device into the mouth. Insertion failure of the device was defined as greater than three unsuccessful attempts or if the entire process of insertion exceeded 120 seconds. | Intraoperatively |
| Incidence of postoperative complications | Incidence of postoperative complications such as mucosal injury, laryngeal spasm, hoarseness, nausea and vomiting were recorded. | 24 hours postoperatively |