Abstract
Questionaires on the number of endosopic procedures in infants and children and its complications in five yerar from 1987 to 1991 were replied by 40 institutes (74.1%) of Japan Society of Pediatric Endoscopy. Number of total endoscopic procedures was 8,722. procedures in upper gastrointestinal tract 5,408 (858 :number of endoscopic treatment in parenthesis), endoscopic retrograde cholangio-pancreticography 478 (5), colonoscopy 1,519 (229), laparoscopy 13 (2), and bronchoscopy 1,304 (124). Number of every procedure has remarkably increased in comparison with the previous observations in 1978 and 1983. Undesired side effects and complications of endosopy were reported in 18 cases (0.206%): cardiorespiratory 6, gastrointestinal bleeding 5, perforation 4, pancreatitis 2, and mediastinitis 1. The complication rate of gastro-intestinal endoscopy is 0.102 per cent, colonoscopy 0.263 per cent, and endoscopic treatment 0.092 per cent.