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Intraoperative variables and early outcome after aneurysm surgery.
M Foroohar1, R L Macdonald, S Roth
1Section of Neurosurgery, Department of Surgery, University of Chicago Medical Center and Pritzker School of Medicine, Chicago, Illinois 60637, USA.
Surgical Neurology
|January 4, 2001
Summary
Lower intraoperative blood pressure and propofol use improve outcomes for cerebral aneurysm surgery. Maintaining stable blood pressure, rather than temperature, is key for better patient recovery after craniotomy.
Area of Science:
- Neurosurgery
- Anesthesiology
- Critical Care Medicine
Background:
- Craniotomy for cerebral aneurysms involves significant risks.
- Intraoperative factors like blood pressure, temperature, and anesthetic agents may influence patient outcomes.
Purpose of the Study:
- To investigate the impact of intraoperative blood pressure, temperature, and anesthetic agents on patient outcomes following craniotomy for cerebral aneurysms.
Main Methods:
- Retrospective review of 297 patients with ruptured (190) and unruptured (107) intracranial aneurysms operated on between 1992 and 1998.
- Collected data on intraoperative variables including blood pressure, temperature, and anesthetic agents.
- Assessed patient outcomes at discharge using the Glasgow Outcome Scale.
Main Results:
- For ruptured aneurysms, younger age, better clinical grade, lower intraoperative systolic and mean blood pressure, shorter surgery duration, and propofol use were linked to better outcomes.
- For unruptured aneurysms, higher intraoperative diastolic and mean blood pressure and shorter surgery duration correlated with improved outcomes.
- Intraoperative temperature did not significantly affect outcomes in either group.
Conclusions:
- Decreased intraoperative blood pressure and propofol use are independently associated with improved outcomes in patients with ruptured cerebral aneurysms.
- Minimizing intraoperative blood pressure drops from preoperative levels is linked to better outcomes for both ruptured and unruptured aneurysms.
- Intraoperative hypothermia was not found to impact patient outcomes.