[Effects of street noise on plasma catecholamines, cyclic AMP and various cardiovascular and metabolic functions in a group of normal subjects].

Exposure to traffic noise for ten minutes increased diastolic pressure without affecting systolic pressure and heart rate. Plasma catecholamine levels were enhanced only five minutes after noise stimulation. Noradrenaline increased more significantly than dopamine and adrenaline. No changes in plasma cAMP levels and hematochemical parameters ( cholesterol , glucose, triglycerides , uric acids) were observed. Data suggest that traffic noise can be considered a stress-full stimulus and its effect on diastolic pressure can be correlated to alpha-receptor stimulation.