On the basis of generally accepted characteristics of a medical error in the provision of medical services objective and subjective reasons for their formation should be considered. Specialists need to understand that the objective causes of medical errors are provoked by a large group of external factors. As for the subjective reasons, they depend on many internal factors. Of course, in emergencies and accidents the probability of becoming a victim of medical errors is higher than in quiet time, with a thoughtful choice of treatment in a cozy office, having the results of all the necessary tests.
From the point of view of the external factors analysis there are the causes of medical error, it is, first of all, the work performed by the specialist under the influence of an error. This activity is expressed in the deviations from special acts and regulations (organisational and technical standards) that can cause or causes adverse effects to the patient. The risk of making a mistake is ghost following a doctor at all stages of care.