Failure to identify and prevent clinical deterioration can reflect the quality and effectiveness of care. This study used routinely collected emergency event data to identify failure to rescue events at one tertiary children’s hospital. Over a nine-year period, 520 emergency events were identified; 25% were cardiac arrest events and 60% occurred among patients who had been admitted for more than 48 hours. Over the nine-year period, failure to rescue events decreased from 23.6% to 2.5%.