In German hospitals, nursing activities are documented either paper-based or via electronic systems. For electronic documentation, various data collection media are available. These include non-mobile workstations, laptops and mobile smartphones. This dissertation aims to evaluate the effects of the documentation medium used on the location and duration of the documentation as well as on the nursing activity patterns. For this purpose, the chosen method is the monitoring of nurses while using the different documentation media. Subsequently, a survey of nurses at nine randomly selected clinics was conducted on their documentation behavior, their documentation system and their attitude towards the used documentation medium. It has been shown that the working patterns of the nursing staff do not necessarily depend on the used documentation system. The introduction of an electronic system alone does not automatically result in changed or improved work process. The quality of patient care should not be impaired by a documentation medium.