.Methods
This prospective observational study was done at Woodwinds
Health Campus and St. John’s Hospital EDs in the
St. Paul, Minnesota metropolitan area. The two EDs see
a combined 60,000 patients per year with 15,000 pediatric
patients. The nonexperimental study was approved by the
HealthEast System Institutional Review Board with a waiver
of informed consent because vital sign acquisition is standard
practice. Patients between the ages of six months and five
years were included in the data collection as this is the most
difficult group in which to obtain BPs. Data was collected
on a convenience sample of patients between 0700 and 2330,
seven days per week. Patients were excluded from the study if
the patient had