[Influence of emotional stress and vasoconstrictor agents on heart rate and blood pressure].

With the administration of local anaesthetics is to expect in dependence of the vasoconstrictor a different cardiovascular reaction. An addition of epinephrine 0.001% directs a rise of the heart rate and a drop of the diastolic blood pressure; after norepinephrine 0.005% the heart rate shows a decrease and at the same time there is an increase of the systolic and diastolic blood pressure. The alterations caused by exogenous catecholamines are superposed by alterations caused by emotional stress (injection, tooth extraction). The endogenous alterations always take place in the same way.