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Updated: Jun 16, 2026

Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus
Published on: October 14, 2022
Intracerebral hemorrhage secondary to ventriculoperitoneal shunt insertion--four case reports
Kouichi Misaki1, Naoyuki Uchiyama, Yutaka Hayashi
1Department of Neurosurgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan. misaki@ns.m.kanazawa-u.ac.jp
Insights
Intracerebral hemorrhage can occur after ventriculoperitoneal shunt surgery. Early bleeding is linked to venous occlusion, while delayed hemorrhage relates to brain tissue vulnerability.
Area of Science:
- Neurosurgery
- Neurology
Background:
- Ventriculoperitoneal (VP) shunts are crucial for managing hydrocephalus.
- Intracerebral hemorrhage is a rare but serious complication following VP shunt placement.
Observation:
- This study analyzed four patients experiencing intracerebral hemorrhage post-VP shunt insertion for various hydrocephalus etiologies.
- Hemorrhage timing varied, occurring from 4 hours to 13 days after surgery.
- Two early cases required intraoperative hemostasis for cortical vein bleeding.
Findings:
- Patients were categorized into early (≤2 days, n=6) and delayed (5-13 days, n=5) hemorrhage groups.
- Early hemorrhage (Group 1) was associated with venous occlusion from intraoperative manipulation.
- Delayed hemorrhage (Group 2) was linked to primary brain disease-induced tissue vulnerability.
Implications:
- Understanding hemorrhage timing and causes can guide preventative strategies.
- This research highlights the importance of careful surgical technique and patient selection.
- Further investigation into risk factors for VP shunt-related hemorrhage is warranted.
Abstract:
Four patients presented with intracerebral hemorrhage secondary to ventriculoperitoneal (VP) shunt insertion. VP shunt insertion was performed for idiopathic normal-pressure hydrocephalus (Case 1), hydrocephalus after cerebellar hemorrhage (Case 2), and subarachnoid hemorrhage followed by meningitis (Cases 3 and 4). Cerebral hemorrhage was confirmed 4 hours (Case 1), 2 days (Case 2), 7 days (Case 3), and 13 days (Case 4) after the operation. Cases 1 and 2 required intraoperative hemostasis for bleeding from the cortical vein. The 7 previous and our 4 patients were divided according to early (within 2 days after shunt placement, n = 6, Group 1) and delayed (5-13 days post-shunting, n = 5, Group 2) hemorrhage. Bleeding was attributable to venous occlusion due to intraoperative manipulation in Group 1, and to the vulnerability of brain tissue induced by a primary brain disease in Group 2.
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