Abstract
Changes in the numbers of operative cases in the central operating room of Showa University Hospital from 1987 to 1989 were studied. The total number of operations remained constant, but the number controlled by anesthesiologists increased. Emergency cases tended to be fewer. By age, fewer infants and more aged people received anesthesia. Operations using systemic anesthesia exceeding 4 hours increased. More cases per month, in all departments, received anesthesia in July, March and August, and fewer received anesthesia in January, February and November. Especially, large increases in numbers of cases were noted in operations on patients 6 to 16 years old. Moreover, increases in the Department of Otolaryngology and Department of Plastic Surgery were large, while increases in the Department of Surgery and Department of Orthopedic Surgery were smaller.
