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Results and Discussions

The Characteristics of the “Safetyfrog” an Intelligent New Ventilator Safety Valve Jan Paul J Mulier, MD., PhD. Department of Anaesthesiology, AZ St Jan AV Brugge, Belgium. Background and Goal of Study

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Results and Discussions

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  1. The Characteristics of the “Safetyfrog” an Intelligent New Ventilator Safety ValveJan Paul J Mulier, MD., PhD. Department of Anaesthesiology, AZ St Jan AV Brugge, Belgium • Background and Goal of Study • Goal of the study was to measure the characteristics of the safetyfrog, a ventilator safety valve (VSV) when connected in a ventilator breathing circuit during the manual mode. • Materials and Methods • The ventilator safety valve is inserted in the breathing circuit. A breathing bag of 2 litres is connected for the manual ventilation. A European type (Ch Medical , Ltd) latex free balloon or an USA type (Vital signs, inc) latex free balloon are connected to the manual system. Fresh gas flow is set at 12 litres per minute. The airway alarm and the APL valve are set at their maximum level. The artificially lung consists of a Pulmo-Sim apparatus from Blease set at a compliance of 23 ml/cmH20. • At time zero the fresh gas flow is set at 12 L/min without compression of the breathing bag. The airway pressure is monitored, and the times at which the alarms go off are noted by a high frequency pulse given on the pressure transducer. The recording is stopped after 60 seconds. Conclusion The device efficiently protects the airway against volutrauma when the ventilator setting was not correct due to human error. • Results and Discussions • Graph shows the airway pressure in the Aestiva5 ventilator from Datex Ohmeda. The device releases air and prevents a pressure of more than 20 cmH2O to take place longer than 6 sec. Anesthesiology 2006; 105: A941 ,Annual Meeting ASA October 14-18, 2006 McCormick Place-Chicago, Illinois

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