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Evaluation of effects of an endoscopic bite block on mask ventilation. In the present study, expiratory tidal volume and minute ventilation are measured under same pressure controlled mode in ventilator with three kinds of holding a mask. ( by one hand, one hand with an endoscopic bite block and two hand hold.)
Evaluation of effects of an endoscopic bite block on mask ventilation. In the present study, expiratory tidal volume and minute ventilation are measured under the same pressure controlled mode in ventilator (Pressure 15cmH2O, Respiratory rate 15/min, I:E=1:1) with three kinds of holding a mask. ( by one hand, one hand with an endoscopic bite block and two hand hold.)
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Group 1O2 | Experimental | A fitting mask is held by one hand -> one hand with an endoscopic bite block -> held by two hands |
|
| Group 12O | Experimental | A fitting mask is held by one hand -> held by two hands-> one hand with an endoscopic bite block |
|
| Group O12 | Experimental | A fitting mask is held by one hand with an endoscopic bite block->by one hand -> by two hands |
|
| Group O21 | Experimental | A fitting mask is held by one hand with an endoscopic bite block -> by two hands-> one hand |
|
| Group 21O | Experimental | A fitting mask is held by two hands -> one hand -> one hand with an endoscopic bite block |
|
| Group 2O1 | Experimental |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| mask ventilation | Procedure | mask ventilation (one-handed ventilation, one-handed with an endoscopic bite block, and two-handed ventilation) |
|
| Measure | Description | Time Frame |
|---|---|---|
| Expiratory tidal volume | Expiratory tidal volume with one-hand mask ventilation, one-handed mask ventilation with an endoscopic bite block, and two-handed ventilation | during mask ventilation after anesthesia induction |
| Measure | Description | Time Frame |
|---|---|---|
| Minute ventilation | Minute ventilationwith one-hand mask ventilation, one-handed mask ventilation with an endoscopic bite block, and two-handed ventilation | during mask ventilation after anesthesia induction |
| Incidence of inadequate ventilation or dead space ventilation |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Jin-Young Hwang, M.D., phD | Seoul Metropolitan Government Seoup National University Boramae Medical Center | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Seoul Metropolitan Government Seoul National University Boramae Medical Center | Seoul | 156-707 | South Korea |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 23473817 | Background | Hart D, Reardon R, Ward C, Miner J. Face mask ventilation: a comparison of three techniques. J Emerg Med. 2013 May;44(5):1028-33. doi: 10.1016/j.jemermed.2012.11.005. Epub 2013 Mar 7. | |
| 20808210 | Background | Joffe AM, Hetzel S, Liew EC. A two-handed jaw-thrust technique is superior to the one-handed "EC-clamp" technique for mask ventilation in the apneic unconscious person. Anesthesiology. 2010 Oct;113(4):873-9. doi: 10.1097/ALN.0b013e3181ec6414. |
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A fitting mask is held by two hands ->one hand with an endoscopic bite block-> by one hand |
|
Inadequate mask ventilation and dead-space ventilation are defined as a mean expiratory tidal volume of less than 4 mL kg-1 of predicted body weight and a mean expiratory tidal volume of less than 150 mL per breath with no clinical signs, respectively. |
| during mask ventilation after anesthesia induction |
| 18853942 | Background | Walsh JH, Maddison KJ, Platt PR, Hillman DR, Eastwood PR. Influence of head extension, flexion, and rotation on collapsibility of the passive upper airway. Sleep. 2008 Oct;31(10):1440-7. |