Treatment: Shunts
Peritoneal catheter
The peritoneal catheter is the end of a ventriculoperitoneal shunt placed in the abdomen, where cerebrospinal fluid is absorbed.
In short: Peritoneal catheter
- It is the distal end of a VP shunt placed in the abdomen.
- The peritoneal cavity absorbs the diverted CSF.
- Extra length is often left to allow for a child's growth.
- Problems with it can contribute to shunt malfunction.
What it is
The peritoneal catheter is the distal end of a ventriculoperitoneal (VP) shunt, placed within the peritoneal cavity in the abdomen. This is where the diverted cerebrospinal fluid is absorbed by the body.
Understanding Peritoneal catheter
After tunneling, the end of the VP shunt tubing is placed into the peritoneal cavity, where the large surface area can absorb the diverted CSF. In children, surgeons often leave extra catheter length coiled in the abdomen so that the shunt can accommodate growth without the tubing becoming too short. The peritoneal catheter can develop problems that contribute to shunt malfunction — such as obstruction at its tip, formation of a fluid pocket around it (an abdominal pseudocyst), or, rarely, other abdominal complications. When the distal end is the source of a problem, it is addressed during shunt revision. The peritoneal catheter is integral to how a VP shunt works.
Why it matters
Understanding the peritoneal catheter helps families see where a VP shunt delivers fluid for absorption, why extra length is left for a child's growth, and how distal problems can contribute to shunt malfunction.
Common questions
Where is the peritoneal catheter placed?
In the peritoneal cavity in the abdomen.
Why leave extra length in children?
To accommodate growth without the tubing becoming too short.
Can it cause problems?
Yes — obstruction, a fluid pocket, or other issues can contribute to malfunction.
Bottom line
The peritoneal catheter is the abdominal end of a VP shunt where CSF is absorbed, with extra length left in children for growth.
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