A risk-related patient-administered medical questionnaire for dental practice

This study deals with an improved medical questionnaire designed on the basis of the results of previous studies. The form consists of 27 items, each subdivided into a main question and one or more subquestions. The medical problems involved are categorised according to the risk-classification system of the American Society of Anaesthesiologists (ASA). An affirmative answer to the main question always results in ASA class II; the subquestions are designed to discriminate between ASA classes II, III and IV. For each of the 27 medical problems in the questionnaire, the implications for dental treatment are explained and an ASA risk classification proposed. The questionnaire can also be a useful tool in medical pre-assessment control.