The evaluation of an information system for intensive care

This paper describes the application of human-computer interaction (HCI) research methods in critical care medicine. An evaluation of an information system for the support of cardiological intensive care (The Aachen Information System for Intensive Care - AISIC) is outlined. AISIC supports the capturing of diagnostic and therapeutic patient data by nursing staff, the requesting of external diagnostic reports, and the retrieval of information for treatment planning performed by physicians (Popp 1994). It was hypothesized that use of the information system would result in quicker task completion times and a reduction in error-making, when compared to the existing paper-based record-keeping system. The evaluation was carried out using eight different forms of data capture, ranging from interview and questionnaire to automatic keystroke logging. The results of the evaluation revealed problems in the prescribing and recording of medication dosage and administration. The resultant redesign of the medication option is discussed, along with implications for improved patient care through the cognitive engineering of medical information systems. The problems encountered in conducting this type of work in a critical care environment are also discussed.