The introduction by Access Technologies of the Vascular Access Port (V-A-P) to researchers in the early 1980’s provided many new opportunities and represented a technique that has reduced animal use and minimized animal stress. It has evolved from providing long-term intravascular access into a multi-purpose access port for use in a variety of applications including; intestinal, biliary, urinary, cerebro-spinal, & ventricular access. The port is positioned in the subcutaneously and this lack of an exit site offers many advantages such as; group housing to promote socialization, reduced infection rates, and improved animal welfare.
When deciding which port to use, consider:
- size, profile & biocompatibility to minimize necrosis
- design of the chamber to avoid ‘sludge’ build-up
- ease of palpation of septum, its’ size and location
- septum grip to avoid needle dislodgement
- dead space volume
Benefits of a port
- obviates the need for a jacket or harness
- promotes socialization and group housing
- decreases infection rates due to closed system
- avoids repeated venipuncture and vessel damage
- can be used for infusion and blood sampling
Catheter length must be trimmed from the distal tip.
This catheter configuration is recommended for catheters smaller than 3.5 french.
Catheter length can be trimmed from the proximal tip. This catheter configuration is essential if the distal tip is rounded or specialized.
Accessing the Port
PosiGrip Huber for bolus and sampling
Right Angle Huber for longer-term infusion and sampling