[Measurement of resistance and deadspace of endotracheal tubes used in paediatric intensive care medicine (author's transl)].

It is reported about the evaluation of resistances and deadspaces of endotracheal tubes. The results show that the resistances of the tubes are similar to the resistances in the patient lungs. The deadspaces are small as compared to the physiological values. It is suggested that a patient with a endotracheal tube has a smaller deadspace than one without a tube.