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Sissoko C, Walker V, Dion GR. Biomechanical Evaluation of Tracheal Needle Puncture Forces: Comparative Analysis of Annular Ligaments and Tracheal Cartilage. J Biomech Eng 2024; 146:011008. [PMID: 37851532 DOI: 10.1115/1.4063821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 10/13/2023] [Indexed: 10/20/2023]
Abstract
Percutaneous tracheotomies (PCT) are commonly performed minimally invasive procedures involving the creation of an airway opening through an incision or puncture of the tracheal wall. While the medical intervention is crucial for critical care and the management of acute respiratory failure, tracheostomy complications can lead to severe clinical symptoms due to the alterations of the airways biomechanical properties/structures. The causes and mechanisms underlaying the development of these post-tracheotomy complications remain largely unknown. In this study, we aimed to investigate the needle puncture process and its biomechanical characteristics by using a well establish porcine ex vivo trachea to simulate the forces involved in accessing airways during PCT at varying angular approaches. Given that many procedures involve inserting a needle into the trachea without direct visualization of the tracheal wall, concerns have been raised over the needle punctures through the cartilaginous rings as compared to the space between them may result in fractured cartilage and post-tracheostomy airway complications. We report a difference in puncture force between piercing the cartilage and the annular ligaments and observe that the angle of puncture does not significantly alter the puncture forces. The data collected in this study can guide the design of relevant biomechanical feedback system during airway access procedures and ultimately help refine and optimize PCT.
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Affiliation(s)
- Cheick Sissoko
- Department of Otolaryngology-Head & Neck Surgery, University of Cincinnati College of Medicine, 231 Albert Sabin Way, ML 0528, Cincinnati, OH 45267
| | - Victoria Walker
- University of Cincinnati College of Medicine, 231 Albert Sabin Way, ML 0528, Cincinnati, OH 45267
| | - Gregory R Dion
- Department of Otolaryngology-Head & Neck Surgery, University of Cincinnati College of Medicine, 231 Albert Sabin Way, ML 0528, Cincinnati, OH 45267
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Nakazawa H, Uzawa K, Tokumine J, Lefor AK, Motoyasu A, Yorozu T. Airway ultrasound for patients anticipated to have a difficult airway: Perspective for personalized medicine. World J Clin Cases 2023; 11:1951-1962. [PMID: 36998948 PMCID: PMC10044949 DOI: 10.12998/wjcc.v11.i9.1951] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/28/2023] [Accepted: 02/27/2023] [Indexed: 03/16/2023] Open
Abstract
Airway ultrasound allows for precise airway evaluation, particularly for assessing the difficult airway and the potential for front of neck access. Many studies have shown that identification of the cricothyroid membrane by airway ultrasound is more accurate than digital palpation. However, no reports to date have provided clinical evidence that ultrasound identification of the cricothyroid membrane increases the success rate of cricothyroidotomy. This is a narrative review which describes patients with difficult airways for whom airway ultrasound may have been useful for clinical decision making. The role of airway ultrasound for the evaluation of difficult airways is summarized and an approach to the use of ultrasound for airway management is proposed. The goal of this review is to present practical applications of airway ultrasound for patients predicted to have a difficult airway and who undergo cricothyroidotomy.
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Affiliation(s)
- Harumasa Nakazawa
- Department of Anesthesiology, Kyorin University School of Medicine, Mitaka 181-8611, Tokyo, Japan
| | - Kohji Uzawa
- Department of Anesthesiology, Kyorin University School of Medicine, Mitaka 181-8611, Tokyo, Japan
| | - Joho Tokumine
- Department of Anesthesiology, Kyorin University School of Medicine, Mitaka 181-8611, Tokyo, Japan
| | - Alan Kawarai Lefor
- Department of Surgery, Jichi Medical University, Shimotsuke 329-0498, Tochigi, Japan
| | - Akira Motoyasu
- Department of Anesthesiology, Kyorin University School of Medicine, Mitaka 181-8611, Tokyo, Japan
| | - Tomoko Yorozu
- Department of Anesthesiology, Kyorin University School of Medicine, Mitaka 181-8611, Tokyo, Japan
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DeSchmidt AM, Gong AT, Batista JE, Song AY, Bidinger SL, Schul AL, Wang EY, Norfleet JE, Sweet RM. Characterization of Puncture Forces of the Human Trachea and Cricothyroid Membrane. J Biomech Eng 2022; 144:1140296. [PMID: 35445243 DOI: 10.1115/1.4054380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Indexed: 12/12/2022]
Abstract
Accurate human tissue biomechanical data represents a critical knowledge gap that will help facilitate the advancement of new medical devices, patient-specific predictive models, and training simulators. Tissues related to the human airway are a top priority, as airway medical procedures are common and critical. Placement of a surgical airway, though less common, is often done in an emergent (cricothyrotomy) or urgent (tracheotomy) fashion. This study is the first to report relevant puncture force data for the human cricothyroid membrane and tracheal annular ligaments. Puncture forces of the cricothyroid membrane and tracheal annular ligaments were collected from 39 and 42 excised human donor tracheas, respectively, with a mechanized load frame holding various surgical tools. The average puncture force of the cricothyroid membrane using an 11 blade scalpel was 1.01 ± 0.36 N, and the average puncture force of the tracheal annular ligaments using a 16 gauge needle was 0.98 ± 0.34 N. This data can be used to inform medical device and airway training simulator development as puncture data of these anatomies has not been previously reported.
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Affiliation(s)
- Aleah M DeSchmidt
- Department of Surgery, University of Washington, 1959 NE Pacific Ave Magnuson Health Sciences T293, Seattle, WA 98195-0000; Department of Bioengineering, University of Washington, 1959 NE Pacific Ave Magnuson Health Sciences T293, Seattle, WA 98195-0000
| | - Alex T Gong
- Department of Surgery, University of Washington, 1959 NE Pacific Ave Magnuson Health Sciences T293, Seattle, WA 98195-0000
| | | | - Agnes Y Song
- Department of Surgery, University of Washington, 1959 NE Pacific Ave Magnuson Health Sciences T293, Seattle, WA 98195-0000; Department of Bioengineering, University of Washington, 1959 NE Pacific Ave Magnuson Health Sciences T293, Seattle, WA 98195-0000
| | - Sophia L Bidinger
- Electrical Engineering Division, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK
| | - Alyssa L Schul
- Philips Healthcare, 22100 Bothell Everett Hwy, Bothell, WA 98021
| | - Everet Y Wang
- Department of Surgery, University of Washington, 1959 NE Pacific Ave Magnuson Health Sciences T293, Seattle, WA 98195-0000
| | - Jack E Norfleet
- Medical Simulation Research Branch Simulation and Training Technology Center, U.S. Army CCDC Soldier Center, 12423 Research Parkway, Orlando, FL 32826
| | - Robert M Sweet
- Department of Surgery, University of Washington, 1959 NE Pacific Ave Magnuson Health Sciences T293, Seattle, WA 98195-0000; Department of Urology, University of Washington, 1959 NE Pacific Ave Magnuson Health Sciences T293, Seattle, WA 98195-0000;Department of Bioengineering, University of Washington, 1959 NE Pacific Ave Magnuson Health Sciences T293, Seattle, WA 98195-0000
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Thomas J, Alonso E, Wendel Garcia PD, Diem B, Kemper M, Weiss M, Both CP. Cuffed versus uncuffed tracheal tubes in a rabbit training model for establishing an emergency front-of-neck airway in infants: a prospective trial. Br J Anaesth 2021; 128:382-390. [PMID: 34920855 DOI: 10.1016/j.bja.2021.11.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 09/27/2021] [Accepted: 11/03/2021] [Indexed: 11/02/2022] Open
Abstract
BACKGROUND There is a paucity of evidence regarding the optimal type of tracheal tube to be advanced over a Frova catheter when performing a 'bougie' emergency front-of-neck airway (eFONA) technique in infants during a 'cannot intubate, cannot oxygenate' situation. METHODS A prospective non-inferiority trial in a rabbit cadaver surgical tracheotomy model to assess the performance of the eFONA technique with an uncuffed 3.5 mm ID tracheal tube vs a cuffed 3.0 mm ID tracheal tube. Queried outcomes include success rate, performance time, and severe secondary airway injuries among tracheal tube types. RESULTS In 60 tracheostomies performed by 30 participants, the overall success rate was 98%. Performance time was independent from tracheal tube choice (uncuffed: 61 s [95% confidence interval (CI), 52-76], cuffed: 64 s [95% CI, 55-79]; P = 0.82). No tracheal tube type was preferred in terms of usability by participants. The cuffed tracheal tube required increased force to be advanced over the Frova catheter and was associated with a risk ratio of 2.5 (95% CI, 0.53-11.9; number needed to harm, 10) for severe secondary airway injuries when compared with the uncuffed tracheal tube. CONCLUSION In performing eFONA in the rabbit cadaver model, an ID 3.5 uncuffed is non-inferior to an ID 3.0 cuffed tracheal tube regarding performance time and preference by the operator. Greater force application to advance the cuffed tube over the Frova catheter and more severe airway injuries may argue for the standardised performance of the eFONA technique with a uncuffed tracheal tube in infants.
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Affiliation(s)
- Jörg Thomas
- Department of Anaesthesiology, University Children's Hospital Zurich, Zurich, Switzerland; Children's Research Centre, University Children's Hospital Zurich, Zurich, Switzerland.
| | - Elena Alonso
- Department of Anaesthesiology, University Children's Hospital Zurich, Zurich, Switzerland; Department of Anaesthesiology, University Hospital Zurich, Zurich, Switzerland
| | - Pedro D Wendel Garcia
- Institute of Intensive Care Medicine, University Hospital Zurich, Zurich, Switzerland
| | - Birgit Diem
- Department of Anaesthesiology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Michael Kemper
- Department of Anaesthesiology, University Hospital Aachen, Aachen, Germany
| | - Markus Weiss
- Department of Anaesthesiology, University Children's Hospital Zurich, Zurich, Switzerland; Children's Research Centre, University Children's Hospital Zurich, Zurich, Switzerland
| | - Christian P Both
- Department of Anaesthesiology, University Children's Hospital Zurich, Zurich, Switzerland; Children's Research Centre, University Children's Hospital Zurich, Zurich, Switzerland
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Kemper M, Kleine-Brueggeney M, Moser B, Both CP, Weiss M. Dimensional compatibility of currently available equipment for cricothyroidotomy and adult airway anatomy: an in vitro analysis. Br J Anaesth 2021; 127:479-486. [PMID: 34176594 DOI: 10.1016/j.bja.2021.05.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 05/12/2021] [Accepted: 05/16/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND There are scant data on the dimensional compatibility of cricothyroidotomy equipment and related airway anatomy. We compared the dimensional design of devices for cricothyroidotomy with anatomical airway data for adult patients. METHODS For all available cricothyroidotomy equipment the outer diameter was recorded from manufacturer information or, if not available, measured using a sliding calliper. Outer diameters were compared with recently published mean (standard deviation [sd]) values for the height of the cricothyroid membrane obtained from computed tomography, separately for males (7.9 [2.2] mm) and for females (5.9 [1.7] mm). RESULTS Twenty-one cricothyroidotomy sets (10 uncuffed, 11 cuffed) with 15 differently designed devices were included. Inner diameters of the tubes ranged from 3.5 to 6.0 mm and outer diameters from 5.0 to 11.7 mm. The outer diameter of the 15 different tubes was found to be greater than the mean membrane height of the adult male cricothyroid membrane in eight devices and greater than the mean membrane height for female adults in 10 devices. Considering the lower range of cricothyroid membrane height, 12 tube outer diameters would be too large for male adults and all 15 for female adults in this range. CONCLUSION The outer diameter of many devices currently marketed for cricothyroidotomy are oversized for adult airway anatomy, particularly for females. For emergency front-of-neck access through the cricothyroid membrane, anatomical data suggest that cricothyroidotomy devices with outer tube diameters of <7 mm for male and <6 mm for female adult patients should be preferred.
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Affiliation(s)
- Michael Kemper
- Department of Anaesthesia, University Children's Hospital, Zurich, Switzerland; Department of Anaesthesiology, RWTH Aachen University Hospital, Aachen, Germany
| | | | - Berthold Moser
- Department of Anaesthesia, See-Spital Horgen, Horgen, Switzerland.
| | - Christian P Both
- Department of Anaesthesia, University Children's Hospital, Zurich, Switzerland
| | - Markus Weiss
- Department of Anaesthesia, University Children's Hospital, Zurich, Switzerland
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Katayama A, Watanabe K, Tokumine J, Lefor AK, Nakazawa H, Jimbo I, Yorozu T. Cricothyroidotomy needle length is associated with posterior tracheal wall injury: A randomized crossover simulation study (CONSORT). Medicine (Baltimore) 2020; 99:e19331. [PMID: 32118765 PMCID: PMC7478458 DOI: 10.1097/md.0000000000019331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Cricothyroidotomy is the final strategy in the "cannot intubate, cannot oxygenate" scenario, but half of needle cricothyroidotomy attempts result in failure. The most frequent complication in needle cricothyroidotomy is posterior tracheal wall injury. We hypothesized that needle length is related to posterior wall injury and compared needle cricothyroidotomy with a commercial kit to a modified shorter needle to evaluate success and posterior wall injury rates. METHODS The commercial kit has a needle stopper to prevent posterior wall injury, with a penetrating length of 25 mm. We made long stopper to shorten the length by 5 mm (net 20 mm penetrating length). Residents were recruited, received a lecture about cricothyroidotomy and practiced needle cricothyroidotomy using the commercial kit on a simulator. They then performed cricothyroidotomy using the commercial kit or the shorter needle on an ex-vivo porcine larynx covered with artificial skin. An intra-tracheal endoscope recorded the procedure. The video was evaluated for success/failure or posterior wall injury by independent evaluators. Larynxes with a distance from the outer surface to the inner lumen exceeding 13 mm were excluded. The distance in each larynx was measured by dissection after the study. Success and posterior wall injury rates were analyzed using Fisher exact test (P < .05 was statistically significant). RESULTS Forty-seven residents participated in the study. Data for two residents were excluded. There was no statistically significant difference in success rate between the commercial kit (100%, 45/45) and the shorter needle (91%, 41/45, P = .12). Failure was defined if the needle tip did not reach the lumen in four trials. Cannulated but complicated by posterior wall injury occurred in 33% (15/45) with the commercial kit and 5% (2/43) with the shorter needle (P < .01). CONCLUSION During needle cricothyroidotomy, force is needed for the needle to penetrate the cricothyroid ligament. The advancing needle sometimes cannot be stopped after penetrating the cricothyroid ligament. These data suggest that needle length is associated with posterior wall injury.
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Affiliation(s)
- Atsuko Katayama
- Department of Anesthesiology, Kyorin University School of Medicine, Sinkawa, Mitaka, Tokyo
| | - Kunitaro Watanabe
- Department of Anesthesiology, Kyorin University School of Medicine, Sinkawa, Mitaka, Tokyo
| | - Joho Tokumine
- Department of Anesthesiology, Kyorin University School of Medicine, Sinkawa, Mitaka, Tokyo
| | | | - Harumasa Nakazawa
- Department of Anesthesiology, Kyorin University School of Medicine, Sinkawa, Mitaka, Tokyo
| | - Ippei Jimbo
- Department of Anesthesiology, Kyorin University School of Medicine, Sinkawa, Mitaka, Tokyo
| | - Tomoko Yorozu
- Department of Anesthesiology, Kyorin University School of Medicine, Sinkawa, Mitaka, Tokyo
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7
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Andresen ÅEL, Kramer‐Johansen J, Kristiansen T. Percutaneous vs surgical emergency cricothyroidotomy: An experimental randomized crossover study on an animal-larynx model. Acta Anaesthesiol Scand 2019; 63:1306-1312. [PMID: 31287154 DOI: 10.1111/aas.13447] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 06/17/2019] [Accepted: 06/18/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Airway management is a paramount clinical skill for the anaesthesiologist. The Emergency Cricothyroidotomy (EC) constitutes the final step in difficult airway algorithms securing a patent airway via a front-of-neck access. The main distinction among available techniques is whether the procedure is surgical and scalpel-based or percutaneous and needle-based. METHODS In an experimental randomized crossover trial, using an animal larynx model, we compared two EC techniques; the Rapid Four Step Technique and the Melker Emergency Cricothyrotomy Kit®. We assessed time expenditure and success rates among 20 anaesthesiologists and related this to previous training, seniority and clinical experience with EC. RESULTS All participants achieved successful airway access with both methods. Average time to successful airway access for scalpel-based EC was 54 (±31) seconds and for percutaneous EC 89 (±38) seconds, with 35 (95% CI: 14-57) seconds time difference, P = .003. Doctors with recent (<12 months) EC training performed better compared to the non-training group (37 vs 61 seconds, P = .03 for scalpel-based EC, and 65 vs 99 seconds, P = .02 for percutaneous EC). We found no differences according to clinical seniority or previous real-life EC experience. CONCLUSIONS Our study demonstrated that anaesthesiologists achieved successful airway access on an animal experimental model with both EC methods within a reasonable time frame, but the scalpel-based EC is performed more promptly. Recent EC training affected the time expenditure positively, while seniority and clinical EC experience did not. EC procedures should be regularly trained for.
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Affiliation(s)
- Åke Erling L. Andresen
- Department of Research Norwegian Air Ambulance Foundation Oslo Norway
- Department of Anaesthesiology and Intensive Care Vestre Viken Hospital Trust Drammen Norway
| | - Jo Kramer‐Johansen
- Division of Prehospital Services, Institute of Clinical Medicine University of Oslo Oslo Norway
- Norwegian National Advisory Unit on Prehospital Emergency Medicine Oslo University Hospital Oslo Norway
| | - Thomas Kristiansen
- Department of Anaesthesiology, Division of Emergencies and Critical Care Oslo University Hospital, Rikshospitalet Oslo Norway
- Division of Emergencies and Critical Care Institute of Clinical Medicine, University of Oslo Oslo Norway
- Norwegian National Advisory Unit on Trauma, Division of Emergencies and Critical Care Oslo University Hospital Oslo Norway
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Onrubia X, Frova G, Sorbello M. Front of neck access to the airway: A narrative review. TRENDS IN ANAESTHESIA AND CRITICAL CARE 2018. [DOI: 10.1016/j.tacc.2018.06.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Chrisman L, King W, Wimble K, Cartwright S, Mohammed K, Patel B. Surgicric 2: A comparative bench study with two established emergency cricothyroidotomy techniques in a porcine model. Br J Anaesth 2016; 117:236-42. [DOI: 10.1093/bja/aew174] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2016] [Indexed: 12/13/2022] Open
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King W, Teare J, Vandrevala T, Cartwright S, Mohammed KB, Patel B. Evaluation of a novel Surgicric® cricothyroidotomy device for emergency tracheal access in a porcine model. Anaesthesia 2015; 71:177-84. [PMID: 26572240 DOI: 10.1111/anae.13275] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2015] [Indexed: 12/21/2022]
Abstract
A can't intubate, can't ventilate scenario can result in morbidity and death. Although a rare occurrence (1:50 000 general anaesthetics), it is crucial that anaesthetists maintain the skills necessary to perform cricothyroidotomy, and are well-equipped with appropriate tools. We undertook a bench study comparing a new device, Surgicric(®) , with two established techniques; the Melker Emergency Cricothyroidotomy, and a surgical technique. Twenty-five anaesthetists performed simulated emergency cricothyroidotomy on a porcine model, with the primary outcome measure being insertion time. Secondary outcomes included success rate, tracheal trauma and ease of use. The surgical technique was fastest. The median (IQR [range]) was 81 (62-126 [37-300]) s, followed by the Melker 124 (100-217 [71-300]) s, and the Surgicric 127 (68-171 [43-300]), p = 0.003. The Surgicric device was the most traumatic, as evaluated by a blinded Ear, Nose and Throat surgeon. Subsequently, the authors contacted the device manufacturer, who has now modified the kit in the hope that its clinical application might be improved. Further studies are required to evaluate the revised model.
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Affiliation(s)
- W King
- Surrey Peri-operative Anaesthesia Critical Care Collaborative Research Group, Anaesthetic Department, Royal Surrey County Hospital, Guildford, Surrey, UK
| | - J Teare
- Surrey Peri-operative Anaesthesia Critical Care Collaborative Research Group, Anaesthetic Department, Royal Surrey County Hospital, Guildford, Surrey, UK
| | - T Vandrevala
- Research Design Service, Kingston Hospital, Surrey, UK
| | - S Cartwright
- ENT Department, Guy's and St Thomas' Hospitals, London, UK
| | - K B Mohammed
- Research and Development Department, The Royal Marsden Hospital, London, UK
| | - B Patel
- Surrey Peri-operative Anaesthesia Critical Care Collaborative Research Group, Anaesthetic Department, Royal Surrey County Hospital, Guildford, Surrey, UK
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Stacey J, Heard AMB, Chapman G, Wallace CJ, Hegarty M, Vijayasekaran S, von Ungern-Sternberg BS. The 'Can't Intubate Can't Oxygenate' scenario in Pediatric Anesthesia: a comparison of different devices for needle cricothyroidotomy. Paediatr Anaesth 2012; 22:1155-8. [PMID: 23066666 DOI: 10.1111/pan.12048] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/04/2012] [Indexed: 01/10/2023]
Abstract
BACKGROUND Little evidence exists to guide the management of the 'Can't Intubate, Can't Oxygenate' (CICO) scenario in pediatric anesthesia. OBJECTIVES To compare two intravenous cannulae for ease of use, success rate and complication rate in needle tracheotomy in a postmortem animal model of the infant airway, and trial a commercially available device using the same model. METHODS Two experienced proceduralists repeatedly attempted cannula tracheotomy in five postmortem rabbits, alternately using 18-gauge (18G) and 14-gauge (14G) BD Insyte(™) cannulae (BD, Franklin Lakes, NJ, USA). Attempts began at the first tracheal cartilage, with subsequent attempts progressively more caudad. Success was defined as intratracheal cannula placement. In each rabbit, an attempt was then made by each proceduralist to perform a cannula tracheotomy using the Quicktrach Child(™) device (VBM Medizintechnik GmbH, Sulz am Neckar, Germany). RESULTS The rabbit tracheas were of similar dimensions to a human infant. 60 attempts were made at cannula tracheotomy, yielding a 60% success rate. There was no significant difference in success rate, ease of use, or complication rate between cannulae of different gauge. Successful aspiration was highly predictive (positive predictive value 97%) and both sensitive (89%) and specific (96%) for tracheal cannulation. The posterior tracheal wall was perforated in 42% of tracheal punctures. None of 13 attempts using the Quicktrach Child(™) were successful. CONCLUSION Cannula tracheotomy in a model comparable to the infant airway is difficult and not without complication. Cannulae of 14- and 18-gauge appear to offer similar performance. Successful aspiration is the key predictor of appropriate cannula placement. The Quicktrach Child was not used successfully in this model. Further work is required to compare possible management strategies for the CICO scenario.
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Affiliation(s)
- Jonathan Stacey
- Department of Anesthesia and Pain Management, Princess Margaret Hospital for Children, Perth, WA, Australia
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Helm M, Hossfeld B, Jost C, Lampl L, Böckers T. Emergency cricothyroidotomy performed by inexperienced clinicians--surgical technique versus indicator-guided puncture technique. Emerg Med J 2012; 30:646-9. [PMID: 22843552 PMCID: PMC3717590 DOI: 10.1136/emermed-2012-201493] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Background To improve the ease and safety of cricothyroidotomy especially in the hand of the inexperienced, new instruments have been developed. In this study, we compared a new indicator-guided puncture technique (PCK) with standard surgical technique (ST) regarding success rate, performance time and complications. Methods Cricothyroidotomy in 30 human cadavers performed by 30 first year anaesthesia residents. The set chosen for use was randomised: PCK-technique (n=15) and ST (n=15). Success rates, insertion times and complications were compared. Traumatic lesions were anatomically confirmed after dissection. Results The ST-group had a higher success rate (100% vs 67%; p=0.04). There was no difference in time taken to complete the procedure (PCK 82 s. vs ST 95 s.; p=0.89). There was a higher complication rate in the PCK-group (67% vs 13%; p=0.04). Most frequent complication in the PCK-group was injury to the posterior tracheal wall (n=8), penetration to the oesophageal lumen (n=4) and injury to the thyroid and/or cricoid cartilage (n=5). In the ST-group in only 2 cases minor complications were observed (small vessel injury). Conclusions In this human cadaver study the PCK technique produced more major complications and more failures than the ST. In the hand of the inexperienced operator the standard surgical approach seems to be a safe procedure, which can successfully be performed within an adequate time. The PCK technique cannot be recommended for inexperienced operators.
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Affiliation(s)
- Matthias Helm
- Department of Anaesthesiology and Intensive Care Medicine-Section Emergency, Medicine/Federal Armed Forces Medical Centre, Ulm, Germany.
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Donat A, Petitjeans F, Précloux P, Puidupin M, Escarment J. La cricothyrotomie : données actuelles et intérêt de cette technique en médecine de guerre. ACTA ACUST UNITED AC 2012; 31:141-51. [DOI: 10.1016/j.annfar.2011.10.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2010] [Accepted: 10/26/2011] [Indexed: 11/25/2022]
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The efficacy of spontaneous and controlled ventilation with various cricothyrotomy devices: a quantitative in vitro assessment in a model lung. ACTA ACUST UNITED AC 2011; 71:886-92. [PMID: 21399543 DOI: 10.1097/ta.0b013e3182092c42] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Guidelines for the management of a difficult airway recommend performing a cricothyrotomy in a "can't intubate/can't ventilate" situation. We investigated the tidal volumes delivered by controlled and spontaneous ventilation by seven commercially available cricothyrotomy sets (cuffed: Quicktrach II, Portex Cricothyroidotomy Kit, and Melker cuffed cannula and uncuffed: Airfree, 4.0-mm ID Quicktrach, 6.0-mm inner diameter Melker, and 13-gauge Ravussin cannula) and two improvised devices (14-gauge intravenous cannula and spike and drip chamber device). METHODS A LS800 model lung, set at different values for compliance and resistance and modified with different upper airway diameter, was ventilated via the respective cricothyrotomy device mechanically and using a self-inflating bag. With the 13-gauge Ravussin cannula and the 14-gauge intravenous cannula, a Manujet injector was used for jet ventilation. Spontaneous ventilation was simulated with a Michigan 560i lung. RESULTS During controlled or manual ventilation, all cuffed cricothyrotomy devices yielded adequate tidal volumes. Uncuffed devices provided tidal volumes≥300 mL only with an upper airway diameter of ≤3 mm. With a Manujet injector, adequate tidal volumes required an upper airway diameter between 3 mm and 5 mm. A spike and drip chamber device does not provide suitable emergency airway access. Spontaneous ventilation at adequate inspiratory pressure levels required a device inner diameter of at least 4 mm. CONCLUSION As expected, cuffed cricothyrotomy devices yield the best results during controlled, manual, and spontaneous ventilation. With uncuffed cricothyrotomy devices, ventilation becomes ineffective when the upper airway obstruction allows for an upper airway diameter>3 mm.
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Hamaekers AE, Henderson JJ. Equipment and strategies for emergency tracheal access in the adult patient. Anaesthesia 2011; 66 Suppl 2:65-80. [DOI: 10.1111/j.1365-2044.2011.06936.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Metterlein T, Frommer M, Ginzkey C, Becher J, Schuster F, Roewer N, Kranke P. A Randomized Trial Comparing Two Cuffed Emergency Cricothyrotomy Devices Using a Wire-Guided and a Catheter-Over-Needle Technique. J Emerg Med 2011; 41:326-32. [DOI: 10.1016/j.jemermed.2010.04.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Revised: 11/15/2009] [Accepted: 04/04/2010] [Indexed: 11/28/2022]
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Metterlein T, Frommer M, Kwok P, Lyer S, Graf BM, Sinner B. Emergency cricothyrotomy in infants--evaluation of a novel device in an animal model. Paediatr Anaesth 2011; 21:104-9. [PMID: 21210882 DOI: 10.1111/j.1460-9592.2010.03497.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND According to different algorithms of airway management, emergency cricothyrotomy is the final step in managing an otherwise not accessible airway. As an alternative to an open surgical procedure, minimally invasive approaches exist. Quicktrach baby™ is a commercially available set for a minimal invasive cricothyrotomy in infants. The set consists of a plastic cannula over a metal needle for direct placement in the trachea. So far, this device has not been evaluated for its intended use. OBJECTIVES We hypothesize that Quicktrach baby™ allows the establishment of an emergency airway. The aim was to prove that the device is easy to handle and the cricothyrotomy fast to perform. METHODS After approval of the local ethics committee, the study was performed on the cadavers of 10 adult rabbits. Cricothyrotomy was performed with Quicktrach baby™. Successful placement, performance time, and complication rate were documented. Possible ventilation with a breathing bag was evaluated. Data are reported as mean and interquartile range. RESULTS Successful placement of Quicktrach baby™ was possible in all attempts. The placement took 31 [23-43] s. In two cases, a fracture of the cricoid's cartilage was seen. In one animal, damage to the posterior wall mucosa was observed. In all cases, sufficient ventilation was possible. CONCLUSIONS Quicktrach™ baby proved to be a reliable technique. In the animal model, it is easy and fast to perform. Only a few minor complications occurred. Sufficient ventilation was possible in all attempts.
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Affiliation(s)
- T Metterlein
- Department of Anaesthesiology, University Hospital Regensburg, Regensburg, Germany.
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Murphy C, Rooney SJ, Maharaj CH, Laffey JG, Harte BH. Comparison of three cuffed emergency percutaneous cricothyroidotomy devices to conventional surgical cricothyroidotomy in a porcine model. Br J Anaesth 2011; 106:57-64. [PMID: 21037267 DOI: 10.1093/bja/aeq294] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Emergency cricothyroidotomy is a potentially life-saving procedure in the 'cannot intubate cannot ventilate (CICV)' scenario. Although surgical cricothyroidotomy remains the technique recommended in many 'CICV' algorithms, the insertion of a tracheostomy as a cannula over a trocar, or using the Seldinger method, may have advantages as they are more familiar to the anaesthetist. We compared the utility of three cuffed cricothyroidotomy devices: cuffed Melker®, Quicktrach 2®, and PCK® devices, with surgical cricothyroidotomy. METHODS After ethical committee approval and written informed consent, 20 anaesthetists performed cricothyroidotomy with all four devices in random order, in a pig larynx and trachea model covered in cured pelt. The primary endpoints were the rate of successful placement of the cricothyroidotomy device into the trachea and the duration of the insertion attempt. RESULTS The Melker® and Quicktrach 2® devices possessed advantages over the surgical approach, in contrast to the PCK® device, which performed less well. All 20 participants inserted the Melker®, with 19 being successful using the surgical approach and the Quicktrach 2®, whereas only 12 successfully inserted the PCK® device (PCK® vs surgical, P=0.02). The Quicktrach 2® had the fastest insertion times and caused least trauma to the posterior tracheal wall. The Melker® was rated highest by the participants and was the only device rated higher than the surgical technique. CONCLUSIONS The Melker® and Quicktrach 2® devices appear to hold particular promise as alternatives to surgical cricothyroidotomy. Further studies, in more clinically relevant models, are required to confirm these initial positive findings.
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Affiliation(s)
- C Murphy
- Department of Anaesthesia, Galway University Hospitals, Galway, Ireland
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Salah N, El Saigh I, Hayes N, McCaul C. Airway Injury During Emergency Transcutaneous Airway Access: A Comparison at Cricothyroid and Tracheal Sites. Anesth Analg 2009; 109:1901-7. [DOI: 10.1213/ane.0b013e3181bdd1ba] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Coté CJ, Hartnick CJ. Pediatric transtracheal and cricothyrotomy airway devices for emergency use: which are appropriate for infants and children? Paediatr Anaesth 2009; 19 Suppl 1:66-76. [PMID: 19572846 DOI: 10.1111/j.1460-9592.2009.02996.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cricothyrotomy or insertion of a transtracheal device is a life-saving maneuver that may be performed on an emergent or semi-elective basis as a means of bypassing an obstructed upper airway. A surgeon is trained to perform this life-saving procedure whereas most anesthesiologists are not facile with the scalpel. It is for this reason that many percutaneous devices have been developed for use by surgeons and nonsurgeons alike. Unfortunately, the majority of such devices are designed for use in adults and/or teenagers but are not appropriate for neonates and infants. The unique anatomy of the infant larynx, the small size of the cricothyroid membrane, and the technical difficulty of locating the correct anatomical structures make the use of most of these devices impractical if not outright dangerous in neonates and infants. This paper will review many (but not all) of the available devices, associated literature, pitfalls and dangers. It is emphasized that each clinician should become familiar with the advantages and disadvantages of these devices and obtain training with simulators or animal models. A strategy for management of the 'cannot ventilate, cannot oxygenate, cannot intubate' situation should be developed with age and size appropriate equipment.
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Affiliation(s)
- Charles J Coté
- Department of Anesthesia and Critical Care, Division of Pediatric Anesthesia, The MassGeneral Hospital for Children, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA.
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Abstract
This article reviews the more recent theoretic and practical information that pertains to airway management in the trauma setting. This is followed by a presentation of the newer airway devices that may be advantageous in the management of the airway in trauma as well as a discussion of other devices, techniques, or maneuvers that are useful in the trauma setting but may be underused. Each clinician needs to be knowledgeable about the various airway options and then, based on one's own particular skills and resources, construct an airway management algorithm that works best for him or her. Each clinician needs to be knowledgeable about the various airway options, and then, based on the clinician's particular skills and resources, construct an airway management algorithm that works best.
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Affiliation(s)
- John McGill
- Department of Emergency Medicine, Hennepin County Medical Center, 701 Park Avenue North, Minneapolis, MN 55415, USA.
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Navsa N, Tossel G, Boon JM. Dimensions of the neonatal cricothyroid membrane - how feasible is a surgical cricothyroidotomy? Paediatr Anaesth 2005; 15:402-6. [PMID: 15828992 DOI: 10.1111/j.1460-9592.2005.01470.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Airway management of the neonate remains a cornerstone in neonatal resuscitation which in most cases involves tracheal intubation. However, difficult intubations do occur. Cricothyroidotomy is recognized as an entry point below the vocal cords. This procedure becomes increasingly difficult in young children and is not recommended in children under the age of 5 years. Little is known about the anatomy of the neonatal airway, especially the size of the cricothyroid membrane. The aim of the study was to determine the dimensions of the cricothyroid membrane in neonates. METHODS Twenty-seven neonatal cadavers (mean height of 44.89 cm and a mean weight of 2.05 kg) were carefully dissected and the dimensions of the cricothyroid membrane recorded with a digital caliper (accuracy 0.01 mm) by two independent observers. RESULTS The cricothyroid membrane has a mean height of 2.61 mm (sd: 0.71) and width of 3.03 mm (sd: 0.63). CONCLUSIONS Results of this study indicate that the dimensions of the cricothyroid membrane are too small for passing a tracheal tube as the dimensions of the tube exceeds that of the cricothyroid membrane. This could fracture the cartilages of the larynx. The performance of a surgical cricothyroidotomy with passing of a tracheal tube is therefore strongly discouraged in neonatal patients.
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Affiliation(s)
- N Navsa
- Department of Anatomy, Section of Clinical Anatomy, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa
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François B, Clavel M, Desachy A, Puyraud S, Roustan J, Vignon P. Complications of tracheostomy performed in the ICU: subthyroid tracheostomy vs surgical cricothyroidotomy. Chest 2003; 123:151-8. [PMID: 12527616 DOI: 10.1378/chest.123.1.151] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND The morbidity of surgical tracheostomy performed in critically ill patients is not well-known. Accordingly, the aim of this prospective study was to determine the incidence and severity of complications associated with subthyroid tracheostomy and cricothyroidotomy when performed in the ICU. METHODS Over a 2-year period, individual consecutive patients who were undergoing an elective tracheostomy were studied. Attending physicians elected the timing and technique of the tracheostomy. All procedures were performed at the bedside. A complete laryngeal examination was performed before ICU discharge, prior to decannulation, and 6 months after the tracheostomy. RESULTS A tracheostomy (subthyroid, 86 patients; cricothyroidotomy, 32 patients) was performed in 118 of 1,574 patients (mean [+/- SD] age, 54 +/- 18 years; 79 men, 39 women; mean APACHE [acute physiology and chronic health evaluation] II score, 19 +/- 2). No deaths could be attributed to the tracheostomy procedure, and 40 complications occurred in 36 patients (30%), with a similar incidence in both groups (subthyroid group, 30 of 86 patients; cricothyroidotomy, 10 of 32 patients; p = 0.9). The severity and timing of complications were comparable between groups. CONCLUSIONS In the present series, the incidence and severity of complications associated with conventional subthyroid tracheostomy and surgical cricothyroidotomy performed in the ICU were similar. The bedside cricothyroidotomy, which is technically easier to perform, represents a valuable alternative to conventional tracheostomy in the management of critically ill patients.
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Affiliation(s)
- Bruno François
- Intensive Care Unit, Dupuytren Teaching Hospital, Limoges, France.
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Chan TC, Vilke GM, Bramwell KJ, Davis DP, Hamilton RS, Rosen P. Comparison of wire-guided cricothyrotomy versus standard surgical cricothyrotomy technique. J Emerg Med 1999; 17:957-62. [PMID: 10595879 DOI: 10.1016/s0736-4679(99)00123-7] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
We compared a wire-guided cricothyrotomy technique vs. standard surgical cricothyrotomy in terms of accuracy in placement, complications, performance time, incision length, and user preference. We conducted a randomized, crossover controlled trial in which Emergency Medicine (EM) attendings and residents performed cricothyrotomies by both standard and wire-guided techniques (using a commercially available kit) on human cadavers after a 15-min training session. Procedure time, incision length, and physician preference were recorded. Cadavers were inspected for accuracy of placement and complications. Airway placement was accurate in 13 of 15 cases for the standard technique (86.7%), and 14 of 15 cases for the wire-guided technique (93.3%). When comparing wire-guided vs. standard techniques, there were no differences in complication rates or performance times. The wire-guided technique resulted in a significantly smaller mean incision length than the standard technique (0.53 vs. 2.53 cm, respectively, p<0.0001). Overall, 14 of 15 physicians stated that they preferred the wire-guided to the standard technique. Our data suggest that this wire-guided cricothyrotomy technique is as accurate and timely to use as the standard technique and is preferred by our physician operators. In addition, the technique results in a smaller incision on human cadaver models.
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Affiliation(s)
- T C Chan
- Department of Emergency Medicine, University of California San Diego School of Medicine, 92103-8676, USA
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Guidelines for the advanced management of the airway and ventilation during resuscitation. A statement by the Airway and Ventilation Management of the Working Group of the European Resuscitation Council. Resuscitation 1996; 31:201-30. [PMID: 8783407 DOI: 10.1016/0300-9572(96)00976-8] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Hauswald M, Ong G, Yeoh E. Percutaneous needle cricothyroidotomy with repetitive airway obstruction. Am J Emerg Med 1995; 13:623-5. [PMID: 7575798 DOI: 10.1016/0735-6757(95)90044-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
To develop a technique for needle cricothyrotomy that mimics the normal respiratory cycle (using repetitive obstruction of the upper airway and relatively low flow oxygen through small catheters), a controlled trial in three anesthetized dogs was performed. Oxygen from a standard bottle and pressure reducer was delivered through the cricothyroid membrane at 0.36 L/kg/min, which is metabolically equivalent to 0.2 L/kg/min in an adult human. The upper airway was obstructed until the chest rose and then was unobstructed to allow exhalation. The animals were ventilated for 5 minutes to allow equilibration. Arterial PCO2 was measured after 2-minute periods of apnea and 3 minutes of ventilation, each repeated four times. The procedure was repeated in three other dogs at a flow of 0.18 L/kg/min to simulate a 50% air leak. Cricothyroid ventilation at 0.36 L/kg/min lowered the PCO2 from 65 mm Hg to 43 mm Hg, F = 258, P = .004. All PCO2 after 25 minutes were in the normal range. Ventilation at 0.18 L/kg/min stabilized the PCO2 at approximately 1.5 times normal (67 mm Hg versus 79 mm Hg for the preceding apnea, F = 77, P = .013). Flow rates achievable with 18- to 20-gauge catheters and standard oxygen sources are adequate for cricothyroid ventilation when the airway is repetitively obstructed to allow a normal respiratory cycle.
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Affiliation(s)
- M Hauswald
- University of New Mexico School of Medicine, Department of Emergency Medicine, Albuquerque 87131-5246, USA
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