Moving average: a moving average of the VAPR
readings used as a visual aid only in the
graphs in the Patient Detail reports.
Threshold: currently defined as 0.55 for VAPR.
VAP: venous drip chamber pressure - VDP0
VAPR: venous access pressure/MAP. All observations
with complete measurement sets (excluding the last hour
of treatment) are averaged together to obtain the
treatment VAPR.