Activated Clotting Times: High Range (Hr-Act), Low Range (Lr-Act), And Recalcified (Ract) Cartridges; Results - Medtronic ACT Plus Manuel De L'utilisateur

Activated Clotting Times: High Range (HR-ACT), Low
Range (LR-ACT), and Recalcified (RACT) Cartridges
Table 1 lists the Medtronic Activated Clotting Time Cartridges available for use with
the Medtronic ACT Plus
Table 1. Medtronic Activated Clotting Time Cartridges
Product
HR-ACT
LR-ACT
RACT
Table 2 displays the cartridge reagents (0.1 mL per channel) and maximum
prewarm times for each cartridge type and cartridges with sample:
Table 2. Cartridge Reagents and Prewarm Limits
Cartridge Type
HR-ACT
LR-ACT
RACT
a
HEPES (hydroxyethyl-piperazine-ethanesulfonic acid) buffer.
b
Sodium azide is a bacteriostatic agent.
c
Kaolin concentration may vary slightly.

Results

Duplicate channel results should fall within 10% of each other for baseline
(unheparinized) samples and within 12% of each other for extended or heparinized
samples.
®
ACT Plus Operator's Manual
®
instrument.
Sample Type
Fresh drawn
Fresh drawn
Citrated
Reagent
12% Kaolin
0.05M CaCl
2
HEPES buffer
Sodium azide
c
0.75% Kaolin
0.0025M CaCl
HEPES buffer
Sodium azide
2.2% Kaolin
0.05M CaCl
2
HEPES buffer
Sodium azide
Channel Sample
Volume
0.4 mL
0.2 mL
0.2 mL
Cartridge Max.
Prewarm Limits
12 hours
a
b
12 hours
2
12 hours
Intended Use
Cardiovascular or
Cath Lab (1 Unit
Heparin/mL or more)
Therapeutic (0-1.5
Units Heparin/mL)
Therapeutic (0-1.5
Units Heparin/mL)
Cartridge + Sample
Prewarm Limits
Nonapplicable
Perform test
immediately.
Nonapplicable
Perform test
immediately.
5 minutes
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