Evaluating patient's health status can be viewed as a multi attribute decision making (MADM) problem. Patients' problems are evaluated on the basis of symptoms. Contemporary information technology enables application of theoretical methods in practice. Such case is Henderson's model of basic leaving activities for patient health evaluation in nursing. In the paper we present the implementation of this model using DEX methodology. DEX is a qualitative MADM tool and offers user friendly acquisition and explanation of expert knowledge. The solution was tested in clinical practice and evaluated by using SWOT (strengths, weaknesses, opportunities and threats) analysis.