sympathectomy impairing adrenergic transmission

The chronic bilateral cervical superior sympathectomy could provoke norepinephrine depletion in the small granular vesicles of the sympathetic terminals, impairing adrenergic transmission; this would then eliminate the constrictor sympathetic effect¹³. Our study is in agreement with published data where pharmacological or anatomical exclusion of the sympathetic activity prevented vasospasm²⁴.

Antônio Tadeu de Souza Faleiros^I; Francisco Humberto de Abreu Maffei^II; Luiz Antonio de Lima Resende^III

^IServices of Neurosurgery, Botucatu School of Medicine, São Paulo State University (UNESP), Botucatu, SP, Brazil
^IIVascular Surgery, Botucatu School of Medicine, São Paulo State University (UNESP), Botucatu, SP, Brazil
^IIINeurology, Botucatu School of Medicine, São Paulo State University (UNESP), Botucatu, SP, Brazil