[The use of diagnostic and surgical procedures in elderly persons in Quebec].
The rapid aging of the population constitutes a new challenge for the health care delivery system. This paper presents the progression of use of several diagnostic and surgical procedures in the elderly in Quebec from 1981 to 1989. Data were obtained from claims to the Régie de l'assurance maladie du Québec for the years 1981, 1985 and 1989. The rate of coronary artery bypass surgery increased by more than 700% in people 65 years and over between 1981 and 1989. This increase was especially high in the oldest age group (q 75 years). There was also a significant increase in surgery for abdominal aortic aneurysm, while the rate of carotid endarterectomy remained stable for people 65 years and over during this period. The rates of all abdominal surgical procedures examined (appendicectomy, repair of hiatal and inguinal hernia, cholecystectomy and colectomy) were relatively stable in elderly during the study period. Total hip replacement more than doubled in people 65 years and over, while other types of hip arthroplasty significantly decreased over this period. All types of diagnostic procedures examined (coronary angiography, bronchoscopy, gastroduodenoscopy and retrograd cholangio-pancreatography) increased significantly, especially in very old people. This study suggests that surgical care is increasing in the elderly in Quebec. This progression is expected to continue in the coming years so that surgical care of the elderly will become a significant part of our health care delivery system.