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Updated: Aug 11, 2026

Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms
Published on: August 11, 2015
Effect of cisternal drainage after early operation for ruptured intracranial aneurysms
Insights
Postoperative cisternal drainage for ruptured aneurysms reduced vasospasm and mortality but increased hydrocephalus risk. Careful regulation of drainage outflow and pressure is crucial for managing this complication.
Area of Science:
- Neurosurgery
- Neurology
- Critical Care Medicine
Background:
- Early surgery for ruptured aneurysms is standard care.
- Cerebrospinal fluid (CSF) drainage is often used postoperatively to manage complications.
- Potential benefits include vasospasm prophylaxis and removal of blood-contaminated CSF.
Purpose of the Study:
- To evaluate the impact of postoperative cisternal drainage on outcomes after early surgery for ruptured aneurysms.
- To assess the incidence of cerebral vasospasm, mortality, and hydrocephalus in patients undergoing cisternal drainage.
Main Methods:
- A study involving 132 patients who underwent early surgery for ruptured aneurysms.
- Assessment of postoperative cisternal drainage effects.
- Comparison of outcomes between patients with and without cisternal drainage.
Main Results:
- Patients with cisternal drainage showed low incidences of cerebral vasospasm and mortality.
- A significantly higher incidence of hydrocephalus was observed in patients who had cisternal drainage.
- Extensive CSF drainage may predispose patients to hydrocephalus.
Conclusions:
- While cisternal drainage may offer benefits in reducing vasospasm and mortality, it carries an increased risk of hydrocephalus.
- Regulation of drainage outflow and pressure is essential to control and prevent hydrocephalus in patients undergoing cisternal drainage.
Abstract:
The effect of postoperative cisternal drainage was assessed in 132 patients who underwent early surgery for ruptured aneurysms. Although the incidence of both cerebral vasospasm and mortality was low in the patients who had cisternal drainage, the incidence of hydrocephalus was significantly higher in these patients. Drainage has been recommended as a useful procedure because it has been shown to improve the prognosis through prophylaxis and relief of vasospasm and removal of blood-contaminated cerebrospinal fluid. However, the results of this study indicate that extensive cerebrospinal fluid drainage may lead to hydrocephalus, which can be controlled by regulation of the drainage outflow and pressure.
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