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The purpose of this study is to investigate whether the difference in stylet curvature affects the ease of tracheal intubation using C-MAC videolaryngoscope in infants under 1 year of age.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| C-curve group (group C) | Experimental | In group C, stylet curvature is made similar to the natural curvature of endotracheal tube. |
|
| Hockey stick curve group (group H) | Active Comparator | In group H, stylet curvature is made similar to hockey stick shape. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Style curve similar to natural curvature of endotracheal tube | Other | Stylet curvature is made similar to the natural curvature of endotracheal tube for intubation using C-MAC videolaryngoscope. |
| Measure | Description | Time Frame |
|---|---|---|
| Tube handling time | From glottis visualization to completion of tracheal intubation | during procedure |
| Measure | Description | Time Frame |
|---|---|---|
| Total intubation time | From insertion of C-MAC blade to completion of tracheal intubation | during procedure |
| Time to reaching glottis | From visualization of glottis to reaching the glottis of tube tip |
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Inclusion Criteria:
â‘ Infants under 1 year old scheduled for elective surgery under general anesthesia
â‘¡ American Society of Anesthesiology physical status I, II
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Seoul National University Hospital | Seoul | 03080 | South Korea |
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| Style curve similar to hockey stick shape | Other | Stylet curvature is made similar to hockey stick shape for intubation using C-MAC videolaryngoscope. |
|
| during procedure |
| The location of the initial tube tip | The location of the initial tube tip on the screen of C-MAC | during procedure |
| Successful tracheal intubation | Incidence of successful intubation within 30 sec | during procedure, within 30 sec |
| Additional manipulation of stylet angle | during procedure |
| Number of external laryngeal manipulation | during procedure |
| Easiness of tracheal intubation | Visual analogue scale (0-10, 0: extremely easy, 10: extremely difficult) | during procedure |