Use this calculation to summarize the supplied cardiovascular measurements with the stated equation and units, or to reproduce a value reported by a monitoring system.

Body weight

A finite measured or assumed value, expressed in kg.

The implementation follows this calculation rule: Estimate total blood volume from body weight using the documented reference value of 70 millilitres per kilogram.^[1]

Blood volume

The calculated blood volume in mL.

This is an arithmetic implementation, not a diagnosis. Hemodynamic measurements depend on acquisition method, timing, body size, rhythm, loading conditions, and clinical context; thresholds may differ among guidelines and patient groups. The output is explicitly an estimate or proxy; preserve that label when reporting it.

Interpret the value with the underlying vital signs and measurement method. Direct clinical assessment, repeat measurements, and related indices such as stroke volume or cardiac index provide context that one summary value cannot.

• BSA DuBois

  Estimate body surface area with the DuBois formula.

• BSA Mosteller

  Estimate body surface area with the Mosteller formula.

• BP Category Lookup

  Classify a blood pressure reading as normal, elevated, stage-1 or stage-2; systolic must exceed diastolic.