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Clinical significance of computed tomography in early aneurysm surgery
M Hornyak1, J Gilsbach, A Harders
1Department of Neurosurgery, University Clinic Freiburg, Medical School, FRG.
Insights
Early surgery for ruptured cerebral aneurysms prevents rebleeding. Post-operative CT scans reveal complications like hematomas and edema, but these don't always impact long-term outcomes.
Area of Science:
- Neurosurgery
- Neuroradiology
- Neurology
Background:
- Ruptured cerebral aneurysms are a critical neurosurgical emergency.
- Early surgical intervention aims to prevent rebleeding and neurological damage.
- Computer tomography (CT) is crucial for assessing post-operative complications.
Purpose of the Study:
- To analyze the significance of CT findings in predicting complications, course, and prognosis after early surgery for ruptured cerebral aneurysms.
- To evaluate the impact of specific CT findings on patient outcomes.
Main Methods:
- Retrospective analysis of 100 patients who underwent early surgery for ruptured cerebral aneurysms.
- Evaluation of postoperative CT scans for complications such as hematomas, hydrocephalus, cerebral edema, vasoparalysis, and infarction.
- Correlation of CT findings with clinical outcomes and prognosis.
Main Results:
- Intracerebral or intraventricular hematomas were associated with a poor prognosis.
- Acute hydrocephalus negatively affected early course but not final results.
- Cerebral volume increase (edema, CSF release, vasoparalysis) was common postoperatively but not correlated with final outcomes.
- Ischemic infarction occurred in 22 patients, primarily related to surgical trauma (19 cases); vasospasm was a rare cause.
Conclusions:
- Early surgical repair of ruptured cerebral aneurysms effectively prevents rebleeding and vasospasm-induced infarction.
- Postoperative CT scans demonstrate numerous morphological lesions, but many, like cerebral edema, do not significantly impact long-term prognosis.
- CT findings are vital for understanding the immediate post-operative landscape and guiding management, despite the complexity of observed lesions.
Abstract:
The significance of computer tomographic findings for the analysis of complications or the course and prognosis after early aneurysm surgery was analyzed on the basis of 100 patients consecutively operated on for ruptured cerebral aneurysms. Intracerebral or extended intraventricular hematomas were a poor prognostic sign. An acute hydrocephalus had a negative effect only on the early course but not on the final results. Nearly all (94) of the patients presented postoperatively with a cerebral volume increase either by CSF release, edema, and/or vasoparalysis. A correlation with the final result could not be observed. Twenty-two patients presented with ischemic infarction in the postoperative CT scan, one had hemorrhagic infarction. In 19 of the 22 cases the cause of the infarction could be related to the surgical trauma. In 10 cases it remained asymptomatic. In only one case vasospasm was responsible for a symptomatic infarction. The findings show that early surgical repair of a ruptured cerebral aneurysm is an effective method to prevent rebleeding and ischemic infarction by vasospasm. The hemorrhage and the operation, however, are followed by a large number of visible morphological lesions in the CT scan.