Trumpet And Start-Up Curves - CareFusion Alaris 8015 User Manual

Specifications and Symbols (Continued)
Symbol
Product is latex-free.
LATEX
Approximate administration set priming volume.
≈ XX ml
Expiration date for product is identified near hourglass symbol.
Do not use if package is damaged.
Product contains micron filter, where
XX
µm
In this instrument, as with all infusion systems, the
action of the pumping mechanism and variations
in individual syringes and administration sets
cause short-term fluctuations in rate accuracy.
The following graphs show typical performance of
the system, as follows:
• Accuracy during various time periods over
which fluid delivery is measured (trumpet
curves).
• Delay in onset of fluid flow when infusion
commences (start-up curves).
Trumpet and start-up curves have been
provided for 0.1 mL/h, 1.0 mL/h and 5.0 mL/h.
Measurements for trumpet curve rates above
5.0 mL/h are also not provided, as the syringe
volume is displaced in a very short time with
a rate up to 999 mL/h. Accuracy, however, is
assured with the design implementation.
General Information
3-62
Symbols (Continued)
Meaning—Alaris Pump Module and Alaris Syringe Module

Trumpet and Start-Up Curves

represents filter size.
XX
Trumpet curves are named for their characteristic
shape. They display discrete accuracy data
averaged over particular time periods or
"observation windows," not continuous data
versus operating time.
Over long observation windows, short-term
fluctuations have little effect on accuracy, as
represented by the flat part of the curve. As
the observation window is reduced, short-term
fluctuations have greater effect, as represented by
the "mouth" of the trumpet. Knowledge of system
accuracy over various observation windows
might be of interest when certain drugs are being
administered.
Because the clinical impact of short-term
fluctuations on rate accuracy depends on the half-
life of the drug being infused and on the degree of
intravascular integration, the clinical effect cannot
be determined from the trumpet curves alone.
Knowledge of the start-up characteristics should
also be considered.
Alaris System User Manual – with v9.33 Model 8015
PCA Module Section