Prior to the implementation of a computer-based patient record, it is necessary to outline the requirements of the medical personnel. The paper is an account of a survey on information needs and demands on computer-based patient records. The study was conducted among physicians, nursing staff and therapists in two Dutch hospitals^*. In order to conduct the study, a measuring-instrument in form of a questionnaire was developed. Based on the results, it may be concluded, that health service staff does not only require improved inputand consultation uses with regard to the hard copy, but is also in need of additional functions. The developed measuring instrument appeared to be a proficient aid in outlining the information needs and demands of the health service staff. Through the developed questionnaire, the staff was able to obtain an idea of the possibilities of the computer-based patient record and state their own interest in same.