Safety and applicability of a pre-stage public access ventilator for trained laypersons: a proof of principle study

BMC Emergency Medicine

Research Article

Svend Kamysek¹  Patricia Fuchs¹  Juliane Obermeier¹  Jochen K. Schubert¹  Henning Jürß²  Hartmut Ewald²  Hannes Nierath²  Martin Degner²  Jens Schwarz³  Martin Becker³ 

[1] Department of Anaesthesiology and Intensive Care Medicine, Rostock University Medical Centre, Schillingallee 35, 18057, Rostock, Germany;Institute for General Electrical Engineering, University of Rostock, 18059, Rostock, Germany;Sensatronic GmbH Wismar, 23970, Wismar, Germany;

关键词: Prototype respirator;    Pressure controlled ventilation;    Airway occlusion;    Lay resuscitation;   

DOI  :  10.1186/s12873-017-0150-5

 received in 2017-07-14, accepted in 2017-11-23,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundContemporary resuscitation guidelines for basic life support recommend an immediate onset of cardiac compressions in case of cardiac arrest followed by rescue breaths. Effective ventilation is often omitted due to fear of doing harm and fear of infectious diseases. In order to improve ventilation a pre-stage of an automatic respirator was developed for use by laypersons.MethodsFifty-two healthy volunteers were ventilated by means of a prototype respirator via a full-face mask in a pilot study. The pre-stage public access ventilator (PAV) consisted of a low-cost self-designed turbine, with sensors for differential pressure, flow, FO2, FCO2 and 3-axis acceleration measurement. Sensor outputs were used to control the respirator and to recognize conditions relevant for efficiency of ventilation and patients’ safety. Different respiratory manoeuvres were applied: a) pressure controlled ventilation (PCV), b) PCV with controlled leakage and c) PCV with simulated airway occlusion. Sensor signals were analysed to detect leakage and airway occlusion. Detection based upon sensor signals was compared with evaluation based on clinical observation and additional parameters such as exhaled CO2.ResultsPressure controlled ventilation could be realized in all volunteers. Leakage was recognized with 93.5% sensitivity and 93.5% specificity. Simulated airway occlusion was detected with 91.8% sensitivity and 91.7% specificity.ConclusionThe pre-stage PAV was able to detect potential complications relevant for patients’ safety such as leakage and airway occlusion in a proof of principle study. Prospectively, this device provides a respectable basis for the development of an automatic emergency respirator and may help to improve bystander resuscitation.

【 授权许可】

CC BY   
© The Author(s). 2017