טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
Ph.D Thesis
Ph.D StudentKedmi Shahar Efrat
SubjectDevelopment and Evaluation of an Integrative Display for
Neonate Medical Status in Intensive Care
DepartmentDepartment of Industrial Engineering and Management
Supervisor Professor Emeritus Daniel Gopher
Full Thesis text - in Hebrew Full thesis text - Hebrew Version


Abstract

An updated and complete status map is essential for providing appropriate care for premature and vulnerable neonates. However, obtaining complete information in order to establish such a comprehensive status map is a complex perceptual and cognitive task. The objective of the present study was the development and assessment of a display that would enable the neonatologist to make a rapid and efficient evaluation of the neonate status.

The information display developed aims to facilitate integration of complex configural data and has two main objectives: 1) Accessibility- Information is incorporated, thus allowing for all relevant information to be presented on a single display. 2) Ease of perceiving relations and patterns of multiple indices- a polygon display enables an immediate visual perception of the overall relations and combined pattern of measures. For demonstration of the developed display we chose a common and important task of creating of a neonate’s blood gases and ventilation status by a neonatologist (performed dozens of times every day).

To evaluate the effect of the new display we collected data in a comparative experiment which compares performance of the new polygon display with two other display types: a table display and a strip chart display, which is a graphic format but lacks the integration properties of a polygon display. A sample of 23 neonatologists from six hospitals in Israel were given the data of 24 cases of neonates formerly hospitalized in the neonatal ward. The Neonatologists were asked to assess the neonate’s status and decide which treatment was to be given to the neonate.

Results indicate that the new polygon display improves the quality of memory storage, which enables the presentation of different features in one image. This type of storage is low resource demanding and therefore enables the neonatologist to turn spare resources of short term memory to other assignments such as a decision on treatment needed. The quality of memory storage using the polygon display facilitated the information processing and decision making during all stages of the task, as compared to the other displays. Although improving response time and reducing memory load, the polygon display was not different from the other display formats in the accuracy of the neonate’s status assessment or the selection of treatment.