AED use prior to EMS arrival:Find:Pt:^Patient:Ord:NEMSIS
aed use prior to ems arrival:find:pt:^patient:ord:nemsis
AED use prior to EMS arrival:Finding:To identify measures at a point in time:^Patient:Ordinal:NEMSIS
aed use prior to ems arrival:finding:to identify measures at a point in time:^patient:ordinal:nemsis