Implementation and Evaluation of the Selection Scheme of Peripheral Venous Infusion Devices for Hospitalized Children

Inclusion Criteria for nurses: * Nurses have been working in the siting more than 1 year * Nurses who can independently perform nursing operations (complete the contents related to intravenous infusion in the standardized training of hospital and pass the examination) Inclusion Criteria for patients: * Patients receiving intravenous infusion * Hospitalized patients aged 28 days to 18 years Exclusion Criteria for nurses: * Nurses who has not obtained the practicing qualification certificate * Nurses refused to participate in the study Exclusion Criteria for patients: * The indwelling time is less than 24h * Patients who were put into intravenous catheter at admission and did not receive new catheter during hospitalization * Patients with only one stat(st) order for intravenous infusion during hospitalization * Patients refused to participate in the study