Heart rate:NRat:Pt:^Fetus:Qn:US.measured
heart rate:nrat:pt:^fetus:qn:us.measured
Heart rate:Number=Count/Time:To identify measures at a point in time:^Fetus:Quantitative:Ultrasound.measured
heart rate:number=count/time:to identify measures at a point in time:^fetus:quantitative:ultrasound.measured