Abstract
Nurse call is widely used as a notification system in hospital ward. Not only the call from the patient but also the warning from the bedside monitor have been incorporated into the nurse call. However, too many alarm calls make inability to cope with a call. And the risk of medical accidents is increased. In this study, we analyze and nurse call response time, the study of risk of delay corresponding to the nurse call. As a result, it was found that the trend of response time of nurse calls.