Percutaneous endoscopic gastrostomy and ventriculoperitoneal shunts: a dangerous combination?

Alastair Cairns1, Joseph Geraghty, Ahmed Al-Rifai

  • 1Gastroenterology Department, Salford Royal NHS Foundation Trust, Manchester, UK. cairns_aj@yahoo.co.uk

Insights

Combining ventriculoperitoneal shunts (VPS) and percutaneous endoscopic gastrostomies (PEG) may increase VPS infection risk. Delaying PEG insertion for at least 10 days after VPS placement can reduce infection rates in neurosurgical patients.

Area of Science:

  • Neurosurgery
  • Gastroenterology
  • Infectious Disease

Background:

  • Combined use of ventriculoperitoneal shunts (VPS) and percutaneous endoscopic gastrostomies (PEG) is common in neurosurgical patients requiring enteral feeding.
  • The safety and infection risk associated with simultaneous or sequential VPS and PEG insertion remain a concern.
  • This study investigates the largest European series to date on combined VPS and PEG procedures.

Purpose of the Study:

  • To determine the safety of combined VPS and PEG insertion.
  • To assess the risk of ventriculoperitoneal shunt infection following percutaneous endoscopic gastrostomy placement.
  • To provide evidence-based recommendations for the timing of PEG insertion in patients with VPS.

Main Methods:

  • Retrospective review of 302 patients undergoing VPS insertion between 2002 and 2007.
  • Analysis of 24 patients who subsequently received PEG insertion.
  • Comparison of shunt infection rates in patients with and without PEG, and by timing of procedures.

Main Results:

  • Five out of 24 patients (20.8%) developed a shunt infection after PEG insertion.
  • This infection rate is significantly higher than the overall institutional rate of 7% (P = 0.017).
  • No significant increase in infection was observed when PEG insertion was delayed by more than 10 days (2/14 patients).

Conclusions:

  • Delaying PEG insertion for at least 10 days post-VPS placement may be prudent to minimize shunt infection risk.
  • PEG insertion should not be avoided in stable patients with pre-existing VPS due to concerns about cerebrospinal fluid or shunt infection.
  • Careful consideration of procedural timing is essential for patient safety in combined VPS and PEG cases.
Abstract

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