Bilateral Bispectral Index Changes During Knee Replacement Surgery With and Without Femoral Block
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 85
- 试验地点
- 1
- 主要终点
- Sevoflurane requirements
研究概览
简要总结
The principal objective is to notice the relevance of timing performance of femoral block for knee replacement surgery during general anesthesia and analyze the relationship with bilateral bispectral index (BIS) monitoring during induction and maintenance of anesthesia. Otherwise the investigators try to investigate if the timing of performance of this block influence in postoperative variables as pain or blood loss.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 50 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- 未提供
排除标准
- •ASA IV, patients with difficult airway management, patients with antecedent of cerebral ischemia, presence of atrioventricular fistula, patients with absent distal pulses or history of vascular surgery in the involved limbs, patients with high risk of deep vein thrombosis.-
结局指标
主要结局
Sevoflurane requirements
时间窗: 6 months
Combined ( femoral block and general anesthesia) or balanced anesthesia ( intravenous analgesics and general anesthesia) is evaluated on the requirements of inhalational hypnotics during surgery. Schedule time when BIS has to be in proper range (40-60): T1 T2 T3 T4 T5 T6 T1 Induction T2 Inflated cuff ischemia T3 Incision T4 Unlocking cuff ischemia T5 End surgery T6 Time to wake the patient from the close of the sevoflurane vaporizer Each time include a period of adjustment in 5 minutes
次要结局
- Intraoperative and postoperative opiates requirements and relations with CVI(Time surgery and 24,48 and 72 h postoperative)