Abstract: Thirty two cases of patients for the surgery were selected: Luminal and atropine were administrated(c. m)before operation. Patients were randomly divided into 2 groups, SGB(S)and non-SGB(N). A solution of 0.88 % lidocain was ipsilaterrally injected in group S and its effectiveness was determined by pupil constriction. Both local and pethidine plus droperidol anesthesia were applied in the two groups and ketarnine was added when stimulation was stronger during the surgery. Systolic(SP)distolic(DP)and HR were simultaneously monitored at time of entry(T₀)beginning operation(T₄)and subcutaneous fistulation(T₅). Dosage and number of intravenous administration were also recorded. Both SP and HR at T₄ and T₅ were S<N(P<0.05 and 0.01 respectively). Dosage of both pethidime and ketamine was S<N P<0.05 and 0.01 respectively). These results indicate that the treatment of SGB may exert its role in improving analgesia and stabilization of circulation during surgery and its usage is recommended for sympathetic dominant patients during their operation.

Key words: stellate ganglionic block, by pass flow, sympathetic nervous system