How often was arterial pre-pump pressure measured:NRat:Pt:^Patient:Ord:ESRD
how often was arterial pre-pump pressure measured:nrat:pt:^patient:ord:esrd
How often was arterial pre-pump pressure measured:Number=Count/Time:To identify measures at a point in time:^Patient:Ordinal:ESRD
how often was arterial pre-pump pressure measured:number=count/time:to identify measures at a point in time:^patient:ordinal:esrd