Cervical Ganglion Sympathectomy to Treat Cerebral Vasospasm in Subarachnoid Hemorrhage

Area of Science:

• Neurology
• Vascular Surgery
• Anesthesiology

Background:

• Delayed cerebral ischemia (DCI) is a major cause of death and disability following aneurysmal subarachnoid hemorrhage.
• Cerebral vasospasm is a primary mechanism driving DCI, posing significant clinical management challenges.
• Current therapies for vasospasm include induced hypertension, intraarterial vasodilators, and angioplasty, especially for refractory cases.

Purpose of the Study:

• To review the existing literature on cervical ganglion blockade, specifically stellate ganglion block, for managing refractory cerebral vasospasm.
• To evaluate the potential role of sympatholytic interventions in mitigating vasospasm-induced tissue hypoperfusion.

Main Methods:

• Literature review of studies investigating stellate ganglion block in patients with aneurysmal subarachnoid hemorrhage and cerebral vasospasm.
• Analysis of the pathophysiological role of adrenergic sympathetic nerves in cerebral vasospasm.

Main Results:

• Adrenergic sympathetic nerves play a key role in the pathophysiology of cerebral vasospasm.
• Temporary interruption of sympathetic pathways via stellate ganglion block has been proposed to minimize vascular narrowing.
• This intervention aims to reverse the effects of cerebral vasospasm on cerebral perfusion.

Conclusions:

• Stellate ganglion block is a potential therapeutic option for refractory cerebral vasospasm post-aneurysmal subarachnoid hemorrhage.
• Further interventional trials are needed to establish the efficacy and safety of this approach.
• Understanding the role of sympathetic blockade can guide future clinical strategies for DCI management.