Integra NeuroSciences NL850-500V Manual Del Usuario página 2

enters the drip chamber. Then, close the
4-way stopcock to the drainage tube
and prime the extension tube. Ensure
that all air bubbles are eliminated and all
connections are free from leaks.
Connection to Patient
• Introduce and position the ventricular
catheter into the ventricle. Placement of
these catheters may be accomplished
through a variety of surgical techniques;
therefore, the surgeon is best advised to
use the method which his/her own
practice and training dictate to be best
for the patient.
• Remove the dust cap from the end of
the extension tube and verify that the
cap is removed from the ventricular
catheter.
• Connect the extension tube to the
ventricular drainage port. Open the
4-way stopcock and verify that the
tubing clamps are open.
• The system is now ready for
measurement of ICP and drainage of
CSF, when indicated.
Draining CSF
• To drain CSF, turn the 4-way stopcock
so the "off" arrow points to the
sampling port. To measure small
volumes, ensure that the one-way
stopcock at the bottom of the 50 ml
drip chamber is closed. When the drip
chamber becomes full, empty it by
opening the one-way stopcock. To
calculate flow rate, assume an approxi-
mate conversion of 18 drops/ml in the
drip chamber.
Injection and Sampling
• To inject fluid and to sample CSF,
close the 4-way stopcock to the
drainage tube. This allows the injection/
sampling port to communicate with the
catheter only. Before puncturing, the
port must be aseptically cleaned to
prevent possible contamination. After
sampling or injection, re-open the 4-way
stopcock to the drainage tube. Sampling
may also be taken from the bottom of
the collection bag.
Transport of Patient
• When patient requires transport, while
connected to the Ventricular Drainage
System, temporarily close the tube
clamp on the drip chamber vent. This
will prevent wetting of the vent's filter
element. Open the clamp after the
patient is transported. The tube clamp
must be open to allow proper operation
of the vent.
Emptying of collection bag
• Before puncturing, the port must be
aseptically cleaned to prevent possible
contamination.
• When the collection bag becomes full,
empty it by inserting a sterile 20G or
smaller needle into the injection/
sampling port at the bottom of the
collection bag and withdraw fluid with
a syringe.
Removal/Replacement of collection bag
The collection bag can be replaced in
one of two locations:
Location 1
• Close the 4-way stopcock to the
drainage tube and close the four tube
clamps.
• Prepare the new collection bag by
closing its tube clamps and removing
the drainage tube, 4-way stopcock and
extension tube.
• Disconnect and remove the full
collection bag from the drainage tube.
• Secure the cord of the replacement
collection bag to an IV pole or other
appropriate support and connect the
bag to the existing drainage tube.
• Align and prime system as described
above.
• Resume drainage by opening the
4-way stopcock to the drainage tube
and opening the tube clamps on the
collection bag.
Location 2
• Close the 4-way stopcock to the
drainage tube and close the four tube
clamps.
• Prepare the new collection bag by
closing its tube clamps and removing
the extension tube and 4-way stopcock.
• Disconnect and remove the full
collection bag and drainage tube.
2
• Secure the cord of the replacement
collection bag to an IV pole or other
appropriate support and connect the
bag to the existing 4-way stopcock.
• Align and prime system as described
above.
• Resume drainage by opening the
4-way stopcock to the drainage tube
and opening all tube clamps.
Do Not Resterilize
The External CSF Drainage System
components are disposable devices and
cannot be resterilized.
Warnings
Hydrocephalic patients with cerebro-
spinal fluid drainage systems must be
kept under close observation for signs
and symptoms of changing intracranial
pressure due to shunt failure. These
signs and symptoms may vary from
patient to patient. Increasing intracranial
pressure is characterized by headache,
vomiting, irritability, listlessness,
drowsiness, other signs of deterioration
of consciousness and nuchal rigidity. In
the infant, increased scalp tensions at
the anterior fontanelle and congestion of
scalp veins will be noted.
Proper placement of the collection bag
is critical, as its height controls the ICP .
It is essential that neither the patient nor
the collection bag be raised or lowered
accidentally. Height changes should only
be made by qualified personnel on the
orders of the physician. CSF will not
drain from the ventricles if the clear
plastic tubing is occluded. If shunting is
the primary function, reopen the tube
clamps promptly after bag replacement
and resume CSF drainage to maintain
the intracranial pressure.
Physicians who infuse drugs into
this device must be assured of the
compatibility of the drugs, with
polycarbonate, polyvinyl chloride,
polyethylene, ABS and acrylic. Some
change in the drug potency may occur
when in contact with these materials.
Precautions
Prior to surgery, all prospective patients
or their representatives should be
informed of the possible complications
associated with this product.