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Arteriovenous Shunt
WHAT YOU SHOULD
KNOW
If your kidneys need temporary assistance with their job
of filtering waste products from the blood, your doctor may
order short-term treatment with a dialysis machine. This device
processes contaminated blood from the body and returns it free
of waste.
Connection to the machine is made through a temporary
hook-up called an arteriovenous (ar-TEER-ee-oh-VEE-nus) shunt
("AV shunt" for short). The shunt is made up of two flexible
plastic tubes, one attached to an artery in your arm or leg,
the other inserted in a nearby vein. The tubes stick out of the
skin, permitting easy attachment to a dialysis machine. When
not in use, the ends are left hooked together.
When the need for dialysis is past, this artificial shunt
will be removed. If you're going to require dialysis
permanently, the doctor will create an AV "fistula" instead of
a shunt. The fistula also connects with an artery and a vein,
but is left completely under the skin.
Risks
There are always risks with surgery. Infection is a
possibility; and heavy bleeding could occur if the shunt comes
apart. If the shunt gets clogged and can't be reopened, another
one will have to be installed. Nevertheless, without the shunt
and the cleansing dialysis it enables, a build-up of waste
products and toxins within the body will eventually prove
fatal.
IF YOU'RE HEADING FOR THE
HOSPITAL...
Before You Go
-
The Week Before Surgery:
-
You'll probably need to stop
taking aspirin and ibuprofen; the doctor will tell you
when. If you're taking aspirin for your heart, don't stop
without asking the doctor first. Also ask whether you can
take any over-the-counter medicines.
-
Your doctor will tell you
whether you need to have blood drawn.
-
The Night Before Surgery:
-
Your physician may suggest
you take a sleeping pill.
-
Just before surgery, you
should not eat or drink anything (even water). Your doctor
will tell you when to begin fasting.
When You
Arrive
-
Check with your doctor before
taking insulin, diabetes pills, blood pressure medicine,
heart pills, or any other medication on the day of
surgery.
-
Do not wear contact lenses to
the hospital. You may wear glasses.
What to Expect While You're
There
You may encounter the following procedures and equipment
during your stay.
-
Taking Vital Signs: These include your temperature,
blood pressure, pulse (counting your heartbeats), and
respirations (counting your breaths). A stethoscope is used
to listen to your heart and lungs. Your blood pressure is
taken by wrapping a cuff around your arm.
-
Blood Tests: You may need blood taken for tests. It
can be drawn from a vein in your hand or from the bend in
your elbow. Several samples may be needed.
-
Chest X-ray: The doctor will check this picture of
your lungs and heart to make sure you're ready for
surgery.
-
Heart Monitor: (Also called an electrocardiogram
[e-LEK-tro-KAR-di-o-gram] or EKG). Typically, three to five
sticky pads are placed on different parts of your body.
Each pad has a wire that is hooked to a TV-type screen or
to a small portable box (telemetry unit) that shows a
tracing of each heartbeat.
-
IV: A tube placed in your vein for giving medicine
or liquids. It will be capped or have tubing connected to
it.
-
Pulse Oximeter: With a little clip connected to your
ear, finger, or toe, this machine measures the oxygen in
your blood.
-
Anesthesia: You'll need a pain-killer during the
operation. For this type of surgery, the following options
are available:
-
General Anesthesia: This alternative puts you
completely to sleep throughout the operation. The
anesthetic is given either as a liquid in your IV or as a
gas through a face mask or endotracheal (END-o-TRA-kee-ull)
tube placed in your mouth and throat.
-
Local Anesthesia: This is simply a pain-killing
injection at the site of the operation. You'll remain
awake, and may feel some painless pressure or
pushing.
After Surgery:
The incisions will be bandaged to keep the area clean and
prevent infection. (A nurse may briefly remove the bandage and
check the stitches shortly after surgery.) You'll need to stay
in bed until the doctor says it's safe to get up. As you begin
your recovery, you can expect the
following:
-
Oxygen: At times during your stay, your body may
need extra oxygen. It is given either through a plastic
mask over your mouth and nose or through nasal prongs. If
the oxygen dries out your nose or the nasal prongs bother
you, tell your nurse, but don't take off the oxygen on your
own.
-
Deep Breathing and Coughing: These exercises help
prevent a lung infection after surgery. Deep breathing
opens the tubes going to your lungs. Coughing helps to
bring up sputum from your lungs and keep them clear. You
should deep breathe and cough every hour while you are
awake, including any time you spend awake during the
night.
-
Take a deep breath and hold
it as long as you can. Then push the air out of your lungs
with a deep strong cough. Put any sputum that you have
coughed up into a tissue. Take 10 deep breaths in a row
every hour while awake. Remember to follow each deep breath
with a cough.
-
Incentive spirometer (spy-ROM-uh-tur): This piece of
equipment helps you take deeper breaths. Put the plastic
nozzle into your mouth, take a very deep breath, and hold
it as long as possible. Then blow as hard as you can into
the mouthpiece. Take 10 deep breaths in a row every hour
while awake. Remember to follow each deep breath with a
cough.
-
Strict Intake/Output: Your doctor may need to know
the amount of liquid you are taking in versus the amount
you lose in your urine. This is often called an
"I&O."
-
Unless told otherwise, drink
6 to 8 large glasses of water each day. Keep a record of
exactly how much liquid you drink.
-
Your output of urine may have
to be measured. Ask your doctor whether it's OK to use the
toilet.
-
Medicines:
-
Antibiotics: These medicines help prevent bacterial
infection. They may be given by IV, as a shot, or by
mouth.
-
Pain Medicine: To ease pain after the operation,
your doctor will probably prescribe medication to be given
by IV, as a shot, or by mouth. Tell the doctor or your
nurses if the pain won't go away or keeps coming
back.
-
Anti-Nausea Medicine: This medicine calms your
stomach and controls vomiting. Your doctor may suggest you
take it at the same time as your pain medicine, which
sometimes upsets the stomach.
After You
Leave
-
For pain or swelling, you may
put ice in a plastic bag, cover it with a towel, and place
it over the incision for 15 to 20 minutes out of every hour
as long as necessary. Do not sleep on the ice pack.
Treatment with ice is most effective when started right
after surgery and used for 24 to 48 hours.
-
When you are allowed to bathe
or shower, carefully wash the stitches or staples with soap
and water. Then put on a clean, new bandage. Change your
bandage any time it gets wet or dirty.
-
You'll need extra rest while
you recuperate. Try to gradually increase your activity
each day, resting whenever you feel it's needed. Avoid any
heavy lifting until your doctor gives the OK.
-
Keep the limb with the shunt
in a comfortable position. Don't sleep on it, or keep it
bent for long periods.
-
If the shunt is in your arm,
exercise gently by squeezing a soft, spongy rubber ball in
your hand every day.
-
Be careful to avoid banging
the shunt into anything.
-
Do not wear tight clothing
over the shunt.
-
Always take your medicine
exactly as directed. If it doesn't seem to help, let the
doctor know, but keep taking it until told otherwise. If
you've been prescribed antibiotics, be sure to use them up,
even if you're feeling better. If a medicine makes you
drowsy, avoid driving or using dangerous
machinery.
Call Your Doctor
If...
-
The shunt sustains a
blow.
-
The shunt feels
cool.
-
Your incision is swollen and
red, or you see any pus. These are signs of
infection.
-
Your stitches come
apart.
-
Your bandage becomes soaked
with blood.
-
You develop a high
temperature.
Seek Care Immediately
If...
-
Emergency measures if the
shunt comes apart:
-
-
Quickly take off the
bandage.
-
Clamp both pieces of the
shunt with the shunt clips to stop the
bleeding.
-
Hook the two ends of the
shunt back together.
-
Call your doctor
immediately.
-
Emergency measures if the
shunt falls out:
-
-
Quickly take off the
bandage.
-
Put pressure on the area
above the shunt to stop the bleeding.
-
Call your doctor
immediately.
-
Also seek help quickly
if:
-
-
The fingers or toes below
the shunt turn blue, look pale, or feel
cool.
-
You suddenly have trouble
breathing or start having chest pain. You could have a
blood clot in your lung or an allergy to one of your
medicines.
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