Effects of epidural target controlled administration of combined ropivacaine and propofol on blood pressure and heart rate in patients of different age undergoing thoracotomy
- VernacularTitle:罗哌卡因硬膜外阻滞复合异丙酚靶控输注麻醉对不同年龄开胸手术患者血压、心率的影响
- Author:
Huanshuang PEI
;
Libing LI
;
Shuqing WANG
- Publication Type:Journal Article
- Keywords:
anesthesia, epidural;
target controlled infusion;
propofol;
ropivacaine;
thoracotomy;
aged
- From:
Medical Journal of Chinese People's Liberation Army
1981;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effects of epidural anesthesia by target controlled introduction (TCI) of 0.375% ropivacaine (Ropi) combined with propofol on the blood pressure (BP) and heart rate (HR) of the patients in different age during thoracotomy. Methods Seventy five ASA Ⅱ-Ⅲ patients undergoing elective resection of esophageal carcinoma were divided into 3 groups according to their age (25 each): groupⅠ (aged 40～59), group Ⅱ (aged 60～74) and group Ⅲ (aged ≥75). An epidural catheter was inserted at the T6～T8 interspace in all patients before induction, and then 5ml of 1% lidocaine was given to all the patients. For each patient, 6 ml of 0.375% Ropi was given epidurally. Anesthesia was induced with propofol TCI 3?g/ml, fentanyl 3?g/kg and atracurium 0.6mg/kg. Tracheal incubation was performed when bispectrum index (BIS) value was less than 50. The patients were mechanically ventilated. Anesthesia was maintained with propofol TCI and epidural anesthesia of 0.375% Ropi at 6ml/h. Propofol was subsequently adjusted to maintain BIS at 50～55 during operation. The concentrations of propofol TCI, mean arterial pressure (MAP), HR, and the amount of ephedrine were continuously monitored during anesthesia. Results MAP in group Ⅱ and Ⅲ was lower than that in groupⅠ (P0.05). The amount of ephedrine used in group Ⅱ and Ⅲ was higher than that in group Ⅰ (P
