The Pioneering Innovation in Impedance Segmentography Angelie EIS monitors the distribution of regional lung ventilation and detects inhomogenities between lung and their segments. Angelie EIS can be used for monitoring on newborns as well as adults, on all patients where respiratory system is involved, either in spontaneous breathing or ventilated patients. The innovative measurements method by using the extended headbox and the use 4 electrodes only, allows quick and easy start of the patients monitoring.