Stellate ganglion blocks

What are stellate ganglion blocks?

Stellate ganglion blocks are performed for patients who present with complaints of sympathetic mediated pain; refractory angina pain to the limb; or head, neck, and upper limb postherpetic neuralgia. This injection is approached at the level of the C6, and sometimes C7, vertebrae. There may be a slightly higher risk of pneumothorax or vertebral artery puncture at the C7 level. Visualization through fluoroscopic guidance should be used. Patients will experience Horner syndrome with successful blocks, which is marked by ptosis (lid lag), miosis, (pupillary constriction), and anhidrosis (diminished sweating on the unilateral face). An increase in facial temperature and nasal congestion may also occur.


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