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Slitlike ventricle syndrome: a life-threatening presentation
Paulo Sérgio Lucas da Silva1, Italo Capraro Suriano, Henrique Monteiro Neto
1Pediatric Intensive Care Unit, Department of Pediatrics, Hospital do Servidor Público Municipal, São Paulo, Brazil. psls.nat@terra.com.br
Insights
Normal ventricular hydrocephalus, a severe form of slit ventricle syndrome, can be life-threatening in shunted children. Prompt recognition and shunt revision are crucial for managing intracranial hypertension without ventricular enlargement.
Area of Science:
- Pediatric neurosurgery
- Pediatric critical care
Background:
- Shunted hydrocephalus is common in children with myelomeningocele.
- Normal ventricular hydrocephalus (NVH) presents a diagnostic challenge in shunted patients.
Observation:
- A 7-year-old girl with a shunt for myelomeningocele presented with severe symptoms of increased intracranial pressure.
- Cranial CT scans showed slit-like ventricles, suggesting shunt patency, despite clinical deterioration.
- Lumbar puncture revealed elevated cerebrospinal fluid pressure, contradicting CT findings.
Findings:
- The patient's shunt catheter was found to be occluded and adhered to the ventricular wall.
- Shunt revision led to dramatic neurological improvement.
- NVH can cause severe intracranial hypertension without ventricular enlargement, potentially missed in emergency settings.
Implications:
- Highlights the critical need to consider NVH in shunted children with unexplained neurological decline.
- Emphasizes that normal or slit ventricles on imaging do not rule out shunt malfunction or intracranial hypertension.
- Underscores the importance of clinical suspicion and invasive monitoring (e.g., lumbar puncture) in diagnosing NVH.
Unlabelled:
Severely increased intracranial pressure can be life-threatening in shunted children who do not experience ventricular enlargement. This condition is termed normal ventricular hydrocephalus and represents the most severe form of slit ventricle syndrome.
Case Report:
A 7-year-old girl with a repaired lumbosacral myelomeningocele and shunted at birth who presented with headache, vomiting, seizure, and deterioration of level of consciousness was admitted to the pediatric intensive care unit. Because her ventricles were small to slitlike on cranial computed tomographic (CT) scan, the shunt was presumed to be working. Although the cerebrospinal fluid analysis was normal, she received initial empirical treatment of viral encephalitis. Twenty-four hours after admission, she evolved with apnea and bradycardia, requiring ventilatory support. Repeated CT scans were unchanged from one study to the next. After 48 hours, her condition worsened, and cerebrospinal pressure during lumbar puncture reached more than 30 mm Hg despite the serial CT scan disclosing no ventricular enlargement. She underwent a shunt revision that showed that the catheter was occluded and had adhered to the ventricular wall. The shunt was replaced, resulting in dramatic neurological improvement. This report highlights a life-threatening condition involving chronically shunted children who present severe intracranial hypertension without ventriculomegaly and may often be neglected or unrecognized by emergency physicians or general neurosurgeons.
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