A strategy to optimise the performance of the mouth-to-bag resuscitator using small tidal volumes: effects on lung and gastric ventilation in a bench model of an unprotected airway

Zecha-Stallinger, Angelika; Wenzel, Volker; Wagner-Berger, Horst G.; Goedecke, Achim von; Lindner, Karl H.; Hörmann, Christoph

doi:10.1016/j.resuscitation.2003.12.012

Cited by 22 publications

(18 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although in our case, easy and effective alveolar gas exchange was noted during facemask ventilation between subsequent attempts to visualize the vocal cords, the entrainment of esophageal air was present to the degree that led the physicians and surgeons in the room to a misdiagnosis and an incorrect course of medical action. When applying facemask ventilation to the unintubated patient, high peak inspiratory flow rates may lead to higher peak airway pressures with subsequent stomach insufflations [9] (Table 1). Moreover, early placement of Laryngeal Mask Airways (LMAs) results in lower gastric insufflation volumes.…”

Section: Discussionmentioning

confidence: 99%

A new risk of facemask ventilation: entrained esophageal air

Carollo

Nossaman

Gutkin

2011

Journal of Clinical Anesthesia

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

A new risk of facemask ventilation: entrained esophageal air

Carollo

Nossaman

Gutkin

2011

Journal of Clinical Anesthesia

View full text Add to dashboard Cite

“…(13) These complications, when accompanied by certain clinical situations, are potentially fatal. (9) It was visually confirmed that the manually operated self-inflating resuscitation bags in which the oxygen inflow is directed to the interior of the bag (Oxigel model A and Narcosul) had the patient valve stuck at the inspiratory position when receiving oxygen at a rate of ≥ 5 L/min.…”

Section: Discussionmentioning

confidence: 99%

Alterações da pressão de pico inspiratório e do volume corrente fornecidos por reanimadores manuais com balão auto-inflável em função do fluxo de entrada de oxigênio utilizado

2008

View full text Add to dashboard Cite

Objective: To assess possible alterations in the tidal volume and peak inspiratory pressure delivered by seven models of manually operated self-inflating resuscitation bags as a function of the oxygen supply rate used. Methods: The resuscitation bags tested were the following: Oxigel, models A and B; CE Reanimadores; ProtecSolutions; Missouri; Axmed; and Narcosul. For the measurements, a wall oxygen flow meter, a flow meter/respirometer, a resuscitation bag, a sensor (Tracer 5 unit), and a test lung were connected. In addition, the Tracer 5 unit was connected to a notebook computer. Oxygen supply rates of 1, 5, 10, and 15 L/min were used. Results: The tidal volume delivered by the Oxigel model A resuscitation bag when receiving oxygen at a rate of 15 L/min was approximately 99% greater than that delivered when receiving oxygen at a rate of 1 L/min. Similarly, peak inspiratory pressure was approximately 155% greater. Under the same conditions, the tidal volume delivered by the Narcosul resuscitation bag was 48% greater, and peak inspiratory pressure was 105% greater. The remaining resuscitation bags tested showed no significant alterations in the tidal volume or peak inspiratory pressure delivered. Conclusions: Under the resistance and compliance conditions used, the resuscitation bags in which the oxygen inflow is directed to the interior of the bag had the patient valve stuck at the inspiratory position when receiving oxygen at a rate ≥ 5 L/min, significantly increasing the tidal volume and peak inspiratory pressure delivered. This did not occur with the resuscitation bags in which the oxygen inflow is directed to the exterior of the bag. ResumoObjetivo: Determinar possíveis alterações do volume corrente e da pressão de pico inspiratório fornecidos por sete modelos de reanimador manual com balão auto-inflável em função do fluxo de entrada de oxigênio utilizado. Métodos: Os reanimadores testados foram: Oxigel,modelos A e B; CE Reanimadores; ProtecSolutions; Missouri; Axmed; e Narcosul. Para as aferições, acoplaram-se um fluxômetro de oxigênio de parede, um fluxômetro/respirômetro, um reanimador, um sensor (aparelho Tracer 5) e um pulmão-teste. Além disso, acoplou-se o aparelho Tracer 5 a um notebook. Utilizaram-se fluxos de entrada de oxigênio de 1, 5, 10 e 15 L/min. Resultados: O volume corrente fornecido pelo reanimador Oxigel modelo A ao receber 15 L/min de oxigênio foi aproximadamente 99% maior que o fornecido ao receber 1 L/min de oxigênio. Da mesma forma, a pressão de pico inspiratório foi 155% maior. Nas mesmas condições, o volume corrente fornecido pelo reanimador Narcosul foi 48% maior, e a pressão de pico inspiratório foi 105% maior. Os demais reanimadores testados não apresentaram alterações significativas do volume corrente e da pressão de pico inspiratório fornecidos. Conclusões: Nas condições de resistência e complacência utilizadas, os reanimadores em que o fluxo de entrada de oxigênio é direcionado diretamente ao interior do balão tiveram a válvula do paciente presa em posição de inspira...

show abstract

“…Einerseits soll eine ausreichende Oxygenierung des Patienten sichergestellt werden, andererseits aber soll der Magen nicht "beatmet" werden [20]. Deshalb muss der Beatmungsdruck ausreichend hoch sein, um eine Lungenexpansion zu ermöglichen, gleichzeitig aber auch so niedrig wie möglich sein, damit der UÖSD nicht überschrit-ten und die Gefahr einer Magenbeatmung reduziert wird.…”

Section: Introductionunclassified