English to Russian Medical Medical (general)

The Dyspnea Indices were devised such that grading breathlessness could be performed as part of obtaining a history from the patient.
The indices include the categories Functional Impairment, as well as Magnitude of Task and Magnitude of Effort which provoke breathlessness.
The interviewer asks specific questions based on the criteria of the various grades of impairment or change in the mentioned categories. This approach was selected instead of a questionnaire answered by the patient himself in order to allow an interviewer with medical training or background to grade breathlessness in a simple and brief encounter.