23
Medfusion® Model 3500 pump V6
Operator’s Manual
Guidelines for enhanced pump performance
The following are guidelines for enhanced syringe
pump performance. Review occlusion time and
flow delivery graphs (starting on page 93). Use
appropriate syringe size, tubing, and inline devices
for expediting delivery of medication or fluid. Certain
factors enhance syringe pump performance, where
performance is defined as:
a) Time to Detect Occlusion
b) Continuity of Flow
c) Startup Time
Always use the smallest syringe
for volume of fluid being
delivered
WARNING:
Use the smallest syringe size
necessary to deliver the fluid or medication. Using
a large syringe at very low rates (below Minimum
Recommended Rate for the syringe) may cause
improper pump operation, delayed occlusion sensing,
larger post occlusion bolus at higher occlusion limit
settings, delivery inaccuracies, or other potential
hazards.
Bolus Volume:
Delivering a bolus volume
less than the recommended bolus volume for the
syringe used may result in delivery inaccuracies. Use
an infusion set with the smallest diameter tubing
available that does not result in excessive back
pressure at the desired flow rate. Consider priming,
loading, bolus, and flush rates when selecting an
infusion set.
If accuracy is of prime concern, use only syringes
that meet the ± 2% requirement of the ISO 7886-2
Standard.
Friction and compliance of the syringe plunger tip
affect delivery startup and flow continuity. The bigger
the syringe, the greater the friction and compliance,
the slower the startup. Use a smaller syringe when
running at a lower rate.
The tables on page 129 show the recommended
minimum delivery rates for the standard syringes
(included with PharmGuard
®
Toolbox 2) by
syringe size. Similar information is provided in
the documentation supplied with PharmGuard
®
Supported Syringes (PSS) Series 2. When
programming flow rates, a limit priority alarm will
be activated, along with an advisory message on the
screen, if a rate that falls outside those recommended
is entered.
Note:
• FlowSentry™ pressure monitoring is not
available for all syringe sizes or types. Check the
documentation that came with the Medfusion
®
Standard Syringes Series 2 (supplied with
PharmGuard
®
Toolbox 2) and/or PSS Series 2 for
information on the availability of FlowSentry™
pressure monitoring.
• Fluids with higher viscosity may cause false
occlusion alarms at lower settings. When infusing
higher viscosity fluids, adjust the occlusion alarm
setting to minimize false occlusion alarms.
• If a rate below that shown on the tables on page
129 or in the documentation supplied with the
PharmGuard
®
Supported Syringes (PSS) Series
2 is entered, the
Rate Below Recommended
Min for Syringe Size
alarm will occur (see
page 106 for a full explanation of the alarm).
The absolute minimum rate allowed by the pump
with a given syringe is listed in the tables found on
page 129, and included in the literature supplied
with the PharmGuard
®
Supported Syringes (PSS)
Series 2.
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