[Combined use of local anesthetic with clonidine in cases of tooth extraction].

The technique of local anesthesia by lidocain in combination with clonidine (clofelinum) as vasoconstrictor in the dose of 1 microg/kg was compared with local anesthesia by novocain in combination with adrenaline (1:200 000) or by lidocain without vasoconstrictor or by articain in combination with adrenaline (0.012 mg/ml). Lidocain use led to expressed tachycardia and considerable increase of cardiac oufput in moderate hypertension reactions.