Dräger PulmoVista 500 Manual page 31

The RVD parameter can be displayed in 2 different configurations: as the
standard deviation of the RVD (RVD SD) for every section or as the RVD
Ratio. RVD SD, indicated as % of Ti, describes how inhomogeneous the
regional inspiration within the contour of the ventilated area is. RVD
Ratio, indicated as % of the total number of pixels, describes the ratio
of the pixels with RVD to the total number of pixels within the contour
of the ventilated area.
Colour maps – PEEP trial analysis
Dark Grey: Pixels with highest compliance.
Orange: Decrease of compliance towards higher PEEP levels – This typically
occurs in ventral regions at high PEEP levels and may be interpreted
as overdistension. The parameter CL HP of 10 means, that there was a
cumulative decrease of 10 % in those (orange) regions, while the highest
compliance was identified at a lower PEEP value.
White: Decrease of compliance towards lower PEEP levels – This typically
occurs in dorsal regions at low PEEP levels and may be interpreted as
collapse or derecruitment. The parameter CL LP of 5 means, that in this
image there was a cumulative decrease of 5 % in those (white) regions,
while the highest compliance was identified at a higher PEEP value.
Different views and their special properties
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