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Cerebral Vasospasm Following Subarachnoid Hemorrhage
M. Akif Topcuoglu1, Johnny C. Pryor, Christopher S. Ogilvy
1Neurovascular Surgery,() Massachusetts General Hospital, 55 Fruit Street, VBK 802, Boston, MA 02114, USA. pkistler@partners.org
Current Treatment Options in Cardiovascular Medicine
|August 27, 2002
Summary
Subarachnoid hemorrhage from berry aneurysms can cause cerebral vasospasm and stroke. Early detection with transcranial Doppler ultrasound and intensive care management are crucial for preventing neurological deficits.
Area of Science:
- Neurology
- Neurosurgery
- Radiology
Background:
- Subarachnoid hemorrhage (SAH) from berry aneurysm rupture frequently leads to cerebral vasospasm and ischemic stroke.
- Cerebral vasospasm is a significant, yet poorly understood, complication of SAH, increasing patient morbidity and mortality.
- Risk factors for vasospasm can be identified through medical history, neurological exams, and head CT scans.
Purpose of the Study:
- To outline the critical management strategies for patients at risk of or experiencing cerebral vasospasm following subarachnoid hemorrhage.
- To emphasize the importance of early detection and intervention for cerebral vasospasm to prevent ischemic complications.
Main Methods:
- Utilizing patient medical history, neurological examination, and head CT findings to estimate vasospasm risk.
- Implementing specialized neurological intensive care unit care, including management of intracranial pressure, fluid balance, electrolytes, and temperature.
- Employing transcranial Doppler (TCD) ultrasound for early detection of vasospasm by monitoring blood flow velocities.
- Considering surgical/pharmacologic blood removal, calcium channel blockers, and triple-H therapy (hypertension, hemodilution, hypervolemia) for prevention and treatment.
- Utilizing cerebral angiography with balloon angioplasty or intra-arterial vasodilators for severe cases.
Main Results:
- Early detection of elevated TCD velocities can prompt initiation of aggressive management strategies like triple-H therapy.
- Prompt intervention for suspected vasospasm, even without definitive proof, is recommended for any neurological decline within 3 weeks post-SAH.
- Cerebral angiography with interventions like balloon angioplasty or intra-arterial vasodilators can effectively relieve ischemic symptoms in significant vasospasm.
Conclusions:
- Comprehensive management, including intensive care and timely interventions guided by TCD ultrasound, is vital for mitigating the risks of cerebral vasospasm after SAH.
- A high index of suspicion for vasospasm is necessary, treating neurological deficits as vasospasm-related until proven otherwise.
- Advanced interventions like angiography-guided angioplasty or intra-arterial infusions offer effective treatment options for hemodynamically significant vasospasm.