What is a VAD and how does it work?
Implanted ports or reservoirs are special
types of central venous access systems that are completely implanted under the skin. These
ports are often referred to as TIVADs (totally implantable venous access devices) or VADs
(venous access device).
Implantable VADs consist of a reservoir, an inlet septum in the center of the reservoir,
and an outlet catheter that is placed into a vein. The inlet septum is soft and pliable
and designed to accept multiple punctures from special types of noncoring needles (e.g.,
Huber needles) while maintaining its leak-tight integrity. The needle is used to infuse
medication into the reservoir.
The catheter is anchored to muscle or subcutaneous tissue
with sutures, and no part of the TIVAD system protrudes through the skin. TIVADs provide
reliable vascular access for patients who require long-term drug or fluid therapy. They
may be left in place for months at a time. Implanted ports are usually made of titanium or
plastic. Patients are generally more comfortable and suffer fewer complications with
TIVADs versus nonimplantable central lines. Physical activity is not limited, quality of
life is improved, and maintenance of the system is relatively easy. Product names include
BardPort, NorPort, Medtronic, MicroPort, Button Port, Q-Port, Hemo-Cath, Perm-a-Cath,
Port-a-Cath, LifePort, and Infuse-A-Port.
To insert a TIVAD, the surgeon creates a subcutaneous pocket to hold the port. The VAD
is usually placed under the pectoral muscles or skin in the anterior chest below the
clavicle. The catheter is then inserted into the desired vessel. The port and catheter are
connected and the skin is then closed. The procedure is generally done under local
anesthesia.
Luke has the Single BradPort (left)
This is roughly where it is placed under the skin
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