Cerebrospinal fluid shunt complications: an emergency medicine perspective
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Updated: Nov 6, 2026

Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus
Published on: October 14, 2022
C B Key1, S G Rothrock, J L Falk
1Department of Emergency Medicine, Orlando Regional Medical Center, Florida, USA.
Abstract:
Shunt malfunction and shunt infections are the most significant complications associated with cerebrospinal fluid shunts. Most cases of shunt infection are due to S. epidermidis or S. aureus. Seventy percent of all shunt infections present within two months of the shunt surgery. The most common factor associated with shunt infection is age under three months. Even fever may not be a consistent sign of shunt infection. A high index of suspicion for shunt infection or malfunction must be maintained when evaluating the patient with a cerebrospinal fluid shunt. There are many types of shunt systems in use today. An understanding of current shunt systems and their associated problems should allow physicians to promptly diagnose and initiate treatment for patients with cerebrospinal fluid shunts. Prompt neurosurgical consultation is mandatory whenever shunt malfunction or infection is suspected.
Insights
Cerebrospinal fluid shunt infections, often caused by S. epidermidis or S. aureus, commonly occur within two months of surgery, especially in infants under three months. Maintaining a high suspicion is crucial for prompt diagnosis and treatment of shunt complications.
Area of Science:
- Neurosurgery
- Infectious Diseases
- Pediatrics
Background:
- Shunt malfunction and infection are primary complications of cerebrospinal fluid (CSF) shunts.
- Staphylococcus epidermidis and Staphylococcus aureus are the most frequent causative agents of shunt infections.
- Infants under three months old represent the highest risk demographic for shunt infection.
Purpose of the Study:
- To highlight the significance of shunt malfunction and infection as major complications.
- To emphasize the importance of early diagnosis and prompt treatment for CSF shunt issues.
- To underscore the need for neurosurgical consultation in suspected cases.
Main Methods:
- Review of common complications associated with CSF shunts.
- Identification of prevalent pathogens in shunt infections.
- Analysis of risk factors, including patient age and timing of presentation.
- Discussion of diagnostic challenges, such as inconsistent fever presentation.
Main Results:
- Seventy percent of shunt infections manifest within two months post-surgery.
- Age under three months is the most significant risk factor for shunt infection.
- Fever is not a consistently reliable indicator of shunt infection.
Conclusions:
- A high index of suspicion is essential for evaluating patients with CSF shunts.
- Understanding current shunt systems aids in prompt diagnosis and treatment.
- Immediate neurosurgical consultation is mandatory for suspected shunt malfunction or infection.
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