Dopamine beta-hydroxylase activity after subarachnoid hemorrhage

Dopamine beta-hydroxylase activity was determined in the patients who underwent subarachnoid haemorrhage prior to had following surgery. Dopamine beta-hydroxylase activity was treated as an index of catecholaminergic system activity depending on the incidence and type of vasoconstriction. Dopamine beta-hydroxylase activity in 41 patients treated surgically was compared with the results obtained in 50 control individuals. Changes in the dopamine beta-hydroxylase activity were noted prior to and after surgery depending upon the incidence and type of vasoconstriction. However, the observed differences were statistically insignificant.