Effect of continuous epidural block on sympathetic neural activity during desflurane anesthesia
- VernacularTitle:连续硬膜外腔阻滞对地氟醚麻醉期间交感神经活动的影响
- Author:
Liping ZHANG
;
Xiuli MENG
;
Jianyu JIANG
- Publication Type:Journal Article
- Keywords:
Anesthesia,epidural;
Desflurane;
Sympathetic nervous system
- From:
Chinese Journal of Anesthesiology
1996;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the prophylactic effect of continuous epidural block combined with desflurane anesthesia on increase of sympathetic neural activity induced by desflurane Methods Thirty patients were randomly allocated to two groups: desflurane anesthesia (DA) group (n=15) and epidural block combined with desflurane anesthesia (ECDA) group (n=15) After rapid induction with fentanyl propofol scoline, in DA group 2% desflurane in oxygen was inhaled firstly, then imposed with successive 1% increase of desflurane until balance and in ECDA group epidural blockade at T 9 10 or T 10 11 was firstly performed with 2% lidocain and other procedures were same as DA group The central venous blood samples were taken before induction, 30 min following desflurane inhalation(T 1), 60 min after operation beginning(T 2) and at the end of operation(T 3), to measure the plasma conentrations of catecholamine with high performance liquid chromatography Results Compared with baseline, following desflurane inhalation, MAP increased in DA group, but decreased in ECDA group, with significant difference between both groups As compared with the baselines, plasma epinephrine (EPI) and norepinephrine (NE) concentrations increased significantly in DA group at T 1, T 2 and T 3, but in ECDA group remained unsignificant changes at T 1, rose markedly at T 2 and T 3 EPI and NE levels were evidently higher in DA group at T 1 and T 2 than those in ECDA group Conclusions Continuous epidural blockade can effectively prevent the increasing in sympathetic neural activity induced by desflurane
