[Effects of the induction of anesthesia with propofol on hemodynamics in patients with Parkinson's disease].

BACKGROUND: Patients with Parkinson's disease frequently suffer from impaired autonomic nervous function. To elucidate the effects of the induction of anesthesia with propofol on cardiovascular hemodynamics has become important, since the number of patients with Parkinson's disease undergoing deep brain stimulation under general anesthesia has increased recently. METHODS: Effects of induction with propofol in patients with Parkinson's disease on cardiovascular hemodynamics and autonomic nervous activity were compared with those of the control patients. Moreover, possible different effect on hemodynamics between the propofol alone and the combination of propofol and fentanyl for the induction were examined in patients with Parkinson's disease. RESULTS: Although heart rate or blood pressure was not different between patients with Parkinson's disease and the control patients before the induction, sympathetic vasomotor activity was lower in patients with Parkinson's disease than the control patients. The induction of anesthesia significantly decreased blood pressure in patients with Parkinson's disease. However the decreasing systolic blood pressure after the induction of anesthesia was more marked in patients with Parkinson's disease than the control patients. We did not find differences in the changes of blood pressure between the propofol alone and the combination of propofol and fentanyl in patients with Parkinson's disease. CONCLUSIONS: No abnormal responses to the induction of anesthesia with propofol were found in the patients with Parkinson's disease.