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Published online by Cambridge University Press: 28 June 2012
We could obtain good results similar to other groups with a device for cardiac compression and automatic ventilation during CPR. The following paper will not discuss the experience with such a device, but the further development and improvement of a device already used and found to be useful.
The further development seemed to be necessary since we tried to utilize new hemodynamic results important for external cardiac compression and ventilation. Other reasons were problems occurring with its practical use.