Comparison of manually triggered ventilation and bag-valve-mask ventilation during cardiopulmonary resuscitation in a manikin model

Bergrath, Sebastian; Rossaint, Rolf; Biermann, Hannah; Skorning, Max; Beckers, Stefan; Rörtgen, Daniel; Brokmann, J.C.; Flege, Christian; Fitzner, Christina; Czaplik, Michael

doi:10.1016/j.resuscitation.2011.09.010

Cited by 9 publications

(15 citation statements)

References 27 publications

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“…1). Of these, six were manikinbased studies and three were clinical trials [15][16][17][18][19][20][21][22][23]. The ventilatory variables that were recorded in bench studies were tidal volume (V T ), ventilation rate (V R ), peak airway pressure (P peak ), peak inspiratory flow (PF), minute volume (V m ), gastric inflation volume (V gastric ), inspiratory time fraction (T i /T tot ), inspiratory time (I time) and inspiratory/expiratory ratio (I/E).…”

Section: Resultsmentioning

confidence: 99%

“…However, there were significant differences between studies regarding the tolerance ranges used to define whether V T and V R were considered adequate or not. While some studies defined adequate V T from 6 ml.kg À1 to 7 ml.kg À1 [18,19,21,22], other studies used a basic range of 400-600 ml [16,23], regardless of the patient's weight. von Goedecke et al defined an adequate V T as approximately 350 ml [17], and Bergrath et al considered a V T lower than 200 ml to be clinically insufficient [21].…”

Section: Resultsmentioning

confidence: 99%

“…While some studies defined adequate V T from 6 ml.kg À1 to 7 ml.kg À1 [18,19,21,22], other studies used a basic range of 400-600 ml [16,23], regardless of the patient's weight. von Goedecke et al defined an adequate V T as approximately 350 ml [17], and Bergrath et al considered a V T lower than 200 ml to be clinically insufficient [21]. The range of what was considered an adequate ventilation rate varied from 8-10 bpm [19,20] to 12-15 bpm [20].…”

Section: Resultsmentioning

confidence: 99%

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Performance of manual ventilation: how to define its efficiency in bench studies? A review of the literature

et al. 2015

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Bench studies have become the preferred way to evaluate the performance of airway equipment, since clinical trials are not specifically required before marketing these devices. However, it is difficult to assess the efficiency of ventilation without recording physiological data. This review analyses how efficiency of manual ventilation has been defined in recent studies, and how their results may be affected. We searched electronic databases from 2000 to April 2014. The main inclusion criterion was the analysis of performance of ventilation. Nine relevant articles were selected from 53 eligible publications. Most studies used the same parameters; tidal volume and ventilation rate. However, there were significant differences between the definitions of performance of ventilation, both in terms of criteria of judgement and methods of analysis. None of these approaches is able to provide a clear understanding of variability of ventilation during a given period. A new definition may increase the relevance of bench studies to clinical medicine, by more appropriately assessing the performance of ventilation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Performance of manual ventilation: how to define its efficiency in bench studies? A review of the literature

et al. 2015

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“…[8][9][10][11][12] In a recent experimental study, an automatic manually triggered device (EasyCPR) did not prove to be superior to BVM in terms of V T values, inspiratory time, and intrapulmonary pressures in a group of 74 medical students. 13 These differences may arise either from the settings used in the case of pressure-cycled devices, and/or from the use of simulated resistance and compliance settings. In the study by Bergrath et al, 13 respiratory mechanics of the model were not monitored, and it seems obvious that conditions mimicking COPD were not used, which may have induced more significant differences between the devices.…”

Section: Discussionmentioning

confidence: 99%

“…13 These differences may arise either from the settings used in the case of pressure-cycled devices, and/or from the use of simulated resistance and compliance settings. In the study by Bergrath et al, 13 respiratory mechanics of the model were not monitored, and it seems obvious that conditions mimicking COPD were not used, which may have induced more significant differences between the devices. The results found with such trials, combined with the fact that manually triggered devices are much more expensive than BVM devices and require an oxygen source have not allowed the European Resuscitation Council and American Heart Association to provide consistent guidelines concerning the use of manually triggered devices.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Manual and Automatic Manually Triggered Ventilation Performance and Ergonomics Using a Simulation Model

et al. 2013

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BACKGROUND: In the absence of endotracheal intubation, the manual bag-valve-mask (BVM) is the most frequently used ventilation technique during resuscitation. The efficiency of other devices has been poorly studied. The bench-test study described here was designed to evaluate the effectiveness of an automatic, manually triggered system, and to compare it with manual BVM ventilation. METHODS: A respiratory system bench model was assembled using a lung simulator connected to a manikin to simulate a patient with unprotected airways. Fifty health-care providers from different professional groups (emergency physicians, residents, advanced paramedics, nurses, and paramedics; n ‫؍‬ 10 per group) evaluated manual BVM ventilation, and compared it with an automatic manually triggered device (EasyCPR). Three pathological situations were simulated (restrictive, obstructive, normal). Standard ventilation parameters were recorded; the ergonomics of the system were assessed by the health-care professionals using a standard numerical scale once the recordings were completed. RESULTS: The tidal volume fell within the standard range (400 -600 mL) for 25.6% of breaths (0.6 -45 breaths) using manual BVM ventilation, and for 28.6% of breaths (0.3-80 breaths) using the automatic manually triggered device (EasyCPR) (P < .0002). Peak inspiratory airway pressure was lower using the automatic manually triggered device (EasyCPR) (10.6 ؎ 5 vs 15.9 ؎ 10 cm H 2 O, P < .001). The ventilation rate fell consistently within the guidelines, in the case of the automatic manually triggered device (EasyCPR) only (10.3 ؎ 2 vs 17.6 ؎ 6, P < .001). Significant pulmonary overdistention was observed when using the manual BVM device during the normal and obstructive sequences. The nurses and paramedics considered the ergonomics of the automatic manually triggered device (EasyCPR) to be better than those of the manual device. CONCLUSIONS: The use of an automatic manually triggered device may improve ventilation efficiency and decrease the risk of pulmonary overdistention, while decreasing the ventilation rate.

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Airways and Ventilation Management During CPR

Viglino¹,

Debaty²

2022

Encyclopedia of Respiratory Medicine

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Comparison of manually triggered ventilation and bag-valve-mask ventilation during cardiopulmonary resuscitation in a manikin model

Cited by 9 publications

References 27 publications

Performance of manual ventilation: how to define its efficiency in bench studies? A review of the literature

Performance of manual ventilation: how to define its efficiency in bench studies? A review of the literature

Evaluation of Manual and Automatic Manually Triggered Ventilation Performance and Ergonomics Using a Simulation Model

Airways and Ventilation Management During CPR

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