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This randomized controlled trial aims to compare the first-attempt success rate of tracheal intubation through supraglottic airway devices using a conventional intubating supraglottic airway device versus a video-assisted supraglottic airway device without fiberoptic guidance in adult patients undergoing elective surgery under general anesthesia. A total of 204 participants will be randomly assigned to one of the two groups. The primary outcome is the first-attempt success rate of tracheal intubation through the supraglottic airway device. Secondary outcomes include intubation time, number of intubation attempts, overall intubation success, hemodynamic changes, airway-related complications, postoperative sore throat and hoarseness, and adverse events. The results of this study may help identify a safe and effective airway management strategy when fiberoptic bronchoscopy is unavailable.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Video-assisted Supraglottic Airway Device | Experimental | Participants undergo tracheal intubation through a video-assisted supraglottic airway device without fiberoptic guidance during general anesthesia. |
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| Conventional Supraglottic Airway Device | Active Comparator | Participants undergo tracheal intubation through a conventional intubating supraglottic airway device without fiberoptic guidance during general anesthesia. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Video-assisted supraglottic airway device | Device | A video-assisted supraglottic airway device is inserted after induction of general anesthesia, and tracheal intubation is performed through the device without fiberoptic guidance. |
| Measure | Description | Time Frame |
|---|---|---|
| First-attempt success rate of tracheal intubation through the supraglottic airway device | The proportion of participants in whom tracheal intubation through the assigned supraglottic airway device is successfully achieved on the first attempt without fiberoptic guidance. | At the time of tracheal intubation during induction of general anesthesia |
| Measure | Description | Time Frame |
|---|---|---|
| Intubation time | Time required for tracheal intubation through the assigned supraglottic airway device. | During induction of general anesthesia |
| Number of intubation attempts | Number of attempts required to achieve successful tracheal intubation through the assigned supraglottic airway device. |
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Inclusion Criteria:
Exclusion Criteria:
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| Conventional intubating supraglottic airway device | Device | A conventional intubating supraglottic airway device is inserted after induction of general anesthesia, and tracheal intubation is performed through the device without fiberoptic guidance. |
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| During induction of general anesthesia |
| Overall intubation success rate | Proportion of participants with successful tracheal intubation through the assigned supraglottic airway device regardless of the number of attempts. | During induction of general anesthesia |
| Postoperative sore throat | Incidence and severity of postoperative sore throat. | 1 hour and 24 hours after surgery |
| Postoperative hoarseness | Incidence of postoperative hoarseness. | 1 hour and 24 hours after surgery |