Arcomed Volumed uVP7000 Premium, Руководство пользователя, Страница: 51 / 59

50
GA 7000C-E-0313
© 2013 by arcomed ag, Switzerland
7 Performance Data
7.1 The Significance of Trumpet Graphs in Clinical Practice
Trumpet graphs indicate the maximum and minimum percentage deviation from the set flow
rate for observation windows of duration 2 to 31 minutes. The maximum deviation from the
set rate can therefore be determined for clinically relevant periods of time. For instance,
many drugs used for infusion have a pharmacological and biological half-life of less than 5
minutes.
One agent commonly used to support the cardiac output in a critically ill patient has a half-life
of 2.5 minutes. When infusing this agent, it is important that the fluctuations in flow from the
infusion pump measured over a time period of 2.5 minutes do not cause the therapeutic
limits of the drug to be exceeded. It has been observed that cardiac stability can be disturbed
by excessive fluctuations in pump output over short time periods.
Fluctuations in pump output depend to a great extent on the rate set and decrease as the
rate is increased.
7.2 Typical Trumpet Curves of the Volumed® µVP7000
Chroma
Typical trumpet curves with infusion set
“Volumed® -Set Silicone” at a Rate of 42 ml/h:
T=2 h (full window) 2 Min 5 Min 11 Min 19 Min 31 Min
EP (Max) 2.37% 1.74% 1.03% 1.12% 1.02% Rate = 42.33 ml/h
EP (Min) -2.55% -0.63% -0.19% 0.36% 0.59%

= 0.79 %
T=1.h (first hour) 2 Min 5 Min 11 Min 19 Min 31 Min
EP (Max) 2.30% 1.60% 0.98% 1.09% 1.00% Rate = 42.30 ml/h
EP (Min) -2.55% -0.63% -0.19% 0.36% 0.59%

= 0.72 %
T=2.h (second hour) 2 Min 5 Min 11 Min 19 Min 31 Min
EP (Max) 2.37% 1.74% 1.03% 1.12% 1.02% Rate = 42.36 ml/h
EP (Min) -0.98% 0.20% 0.79% 0.74% 0.82%

= 0.85 %
-10
-5
0
5
10
0 10 20 30
EP Max
EP Min
Total deviation
Ave
rag
e
d
ev
iatio
n
in
%
observation window in
minutes
Trumpet curve for whole observation window