Transcatheter ventilation with a modified Rapid-O2 oxygen insufflation device
Background The Rapid-O2 oxygen insufflation device® (Rapid-O2) was designed primarily for rescue oxygenation in cannot intubate, cannot oxygenate (CICO) events; thus, hypercapnia is inevitable. Rapid-O2 was modified to enhance ventilation using the Venturi effect during expiration. Methods To determ...
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Korean Society of Anesthesiologists
2025-02-01
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| Series: | Korean Journal of Anesthesiology |
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| Online Access: | http://ekja.org/upload/pdf/kja-24095.pdf |
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| author | Jaewon Jang Hye Jin Kim Hyun Joo Kim Wyun Kon Park |
| author_facet | Jaewon Jang Hye Jin Kim Hyun Joo Kim Wyun Kon Park |
| author_sort | Jaewon Jang |
| collection | DOAJ |
| description | Background The Rapid-O2 oxygen insufflation device® (Rapid-O2) was designed primarily for rescue oxygenation in cannot intubate, cannot oxygenate (CICO) events; thus, hypercapnia is inevitable. Rapid-O2 was modified to enhance ventilation using the Venturi effect during expiration. Methods To determine the most effective combination of inner catheters (20 gauge [G], 18 G, 16 G, 14 G, and 2-mm inner diameter [ID] transtracheal catheter [TTC]) and insufflation catheters (16 G, 14 G, and 2-mm ID TTC) for achieving optimum ventilation, insufflating and expiratory flows were measured at an oxygen flow rate of 15 L/min. The insufflating and expiratory pressures were measured at 6–15 L/min. The flows and pressures were measured using a gas flow analyzer. The insufflating and expiratory times were measured using a trachea-lung model to obtain minute volumes. To assess the improvement by modifying the Rapid-O2, minute volumes were measured using the Rapid-O2. Results The most appropriate inner catheter was 18 G. The insufflating pressures ranged from 97 (2-mm ID TTC) to 377 cmH2O (16 G) at 15 L/min. During expiration, similar negative pressures of 50 cmH2O were measured in the insufflation catheters at 15 L/min. At lung compliance of 100 ml/cmH2O, the minute volumes through a 2-mm ID and 14 G insufflation catheters were 7.0 and 5.37 L/min, respectively, at 15 L/min. The minute volumes were significantly greater in modified Rapid-O2. Conclusions Modified Rapid-O2 provided sufficient minute volumes in adults using a 14 G or 2-mm ID insufflation catheter at 15 L/min, demonstrating its potential for ventilation in CICO events. |
| format | Article |
| id | doaj-art-f4a9e5714196494b874f3fd2aa638af4 |
| institution | Kabale University |
| issn | 2005-6419 2005-7563 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Korean Society of Anesthesiologists |
| record_format | Article |
| series | Korean Journal of Anesthesiology |
| spelling | doaj-art-f4a9e5714196494b874f3fd2aa638af42025-02-03T08:32:46ZengKorean Society of AnesthesiologistsKorean Journal of Anesthesiology2005-64192005-75632025-02-01781617210.4097/kja.240959009Transcatheter ventilation with a modified Rapid-O2 oxygen insufflation deviceJaewon Jang0Hye Jin Kim1Hyun Joo Kim2Wyun Kon Park Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, KoreaBackground The Rapid-O2 oxygen insufflation device® (Rapid-O2) was designed primarily for rescue oxygenation in cannot intubate, cannot oxygenate (CICO) events; thus, hypercapnia is inevitable. Rapid-O2 was modified to enhance ventilation using the Venturi effect during expiration. Methods To determine the most effective combination of inner catheters (20 gauge [G], 18 G, 16 G, 14 G, and 2-mm inner diameter [ID] transtracheal catheter [TTC]) and insufflation catheters (16 G, 14 G, and 2-mm ID TTC) for achieving optimum ventilation, insufflating and expiratory flows were measured at an oxygen flow rate of 15 L/min. The insufflating and expiratory pressures were measured at 6–15 L/min. The flows and pressures were measured using a gas flow analyzer. The insufflating and expiratory times were measured using a trachea-lung model to obtain minute volumes. To assess the improvement by modifying the Rapid-O2, minute volumes were measured using the Rapid-O2. Results The most appropriate inner catheter was 18 G. The insufflating pressures ranged from 97 (2-mm ID TTC) to 377 cmH2O (16 G) at 15 L/min. During expiration, similar negative pressures of 50 cmH2O were measured in the insufflation catheters at 15 L/min. At lung compliance of 100 ml/cmH2O, the minute volumes through a 2-mm ID and 14 G insufflation catheters were 7.0 and 5.37 L/min, respectively, at 15 L/min. The minute volumes were significantly greater in modified Rapid-O2. Conclusions Modified Rapid-O2 provided sufficient minute volumes in adults using a 14 G or 2-mm ID insufflation catheter at 15 L/min, demonstrating its potential for ventilation in CICO events.http://ekja.org/upload/pdf/kja-24095.pdfairway managementairway obstructionhypercapniarespiration, artificialventilationventilators, negative pressure |
| spellingShingle | Jaewon Jang Hye Jin Kim Hyun Joo Kim Wyun Kon Park Transcatheter ventilation with a modified Rapid-O2 oxygen insufflation device Korean Journal of Anesthesiology airway management airway obstruction hypercapnia respiration, artificial ventilation ventilators, negative pressure |
| title | Transcatheter ventilation with a modified Rapid-O2 oxygen insufflation device |
| title_full | Transcatheter ventilation with a modified Rapid-O2 oxygen insufflation device |
| title_fullStr | Transcatheter ventilation with a modified Rapid-O2 oxygen insufflation device |
| title_full_unstemmed | Transcatheter ventilation with a modified Rapid-O2 oxygen insufflation device |
| title_short | Transcatheter ventilation with a modified Rapid-O2 oxygen insufflation device |
| title_sort | transcatheter ventilation with a modified rapid o2 oxygen insufflation device |
| topic | airway management airway obstruction hypercapnia respiration, artificial ventilation ventilators, negative pressure |
| url | http://ekja.org/upload/pdf/kja-24095.pdf |
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