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Instructions for Use – English
13.4.8
Blood sampling with an NBSS
1
2
NBSS
XL
A–F
VI–VII
4
7
2
13.5
Blood sampling with an ABSS or ABSS
Follow the instructions below for blood sampling with an ABSS or ABSS
13.5.1
13.5.2
13.5.3
58
XL
NBSS
13.4.6
1
1
3
1
For blood gas analyses, it is recommended that twice the dead-space volume (confi guration-dependent liquid volume between
the patient vessel and the sampling port) be removed prior to the blood sampling process. For coagulation diagnostics, more mixing
volume may need to be removed from the pressure monitoring set. The blood sampling systems (NBSS, NBSS
within the pressure monitoring set of the manufacturer CODAN pvb Critical Care are confi gured in such a way that, with a comple-
tely fi lled reservoir and using a catheter with an external diameter of ≤ 1.3 mm (18 G/4 Ch) and a length of ≤ 20 cm, at least twice
the dead-space volume can be removed. If, however, it is clinically necessary and unavoidable to use a catheter with an external
diameter greater than 1.3 mm and/or a length greater than 20 cm, the dead-space volume of the pressure monitoring set must be
determined prior to blood sampling to ensure that undiluted blood samples can be taken for blood analyses using the blood sampling
system. To work out the confi guration-dependent dead-space volume, draw liquid into a blood sampling container until blood can
be seen at the intended sampling port. The withdrawn volume is then read off using the scale on the blood sampling container, and
multiplied by a factor of 2. The result of this multiplication specifi es the volume that must be removed prior to a withdrawal in order
to ensure that undiluted blood samples can be taken for blood gas analysis. If the calculated volume cannot be withdrawn from
this reservoir, the dead-space volume must be reduced for the application (for example, by using a catheter with a smaller internal
volume) or more mixing volume must be removed prior to the blood sampling (for example, by removing mixed blood with an additi-
onal blood sampling container). A blood sample diluted with saline solution leads to invalid blood analysis results.
It should be ensured that the 2 ml reservoir (NBSS & ABSS) of a pressure monitoring set is completely fi lled during blood
sampling, since this is the only way to ensure that undiluted blood samples can be taken for a blood gas analysis. It is not
necessary to completely fi ll a 6 ml reservoir (NBSS
determined using the method set out in the previous paragraph before the sampling, in order to remove at least twice the
dead-space volume before the blood sampling using the scale on the 6 ml reservoir for the blood gas analysis. A blood sample
diluted with saline solution leads to invalid blood analysis results. For coagulation diagnostics, more mixing volume may need
to be removed from the pressure monitoring set before blood sampling.
Turning the control knob of the reservoir too far can damage the threaded rod and thus make the entire component per-
manently unusable. A predetermined breaking point on the threaded rod protects the housing from excessive force in order to
maintain the leak-tightness of the system at all times. The control knob of a reservoir must only be opened and closed gently
and until noticeable resistance is felt.
– Needle-free Blood Sampling System (6 ml)
XL
2
2
1
5
2
1
90°
8
3
270°
XL
XL
& ABSS
XL
XL
3
13.4.1-.3
2
6
1
13.4.6
2
9
13.4.3
270°
1
1
2
) if the confi guration-dependent dead-space volume was
CODAN pvb Critical Care GmbH
1
13.4.4-.6
90°
13.4.3
3
3
13.4.3
2
, ABSS & ABSS
)
XL
XL
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