The Analgesic Efficacy of Magnesium Sulfate as an Adjuvant to Continuous Presternal Bupivacaine Infusion Through a Single Catheter After Cardiac Surgery; A Prospective Randomized Double Blind Study.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 40
- 试验地点
- 1
- 主要终点
- Pain assessment using a VAS
研究概览
简要总结
Effective pain relief after cardiac surgery has assumed importance with the introduction of fast track discharge protocols that requires early weaning from mechanical ventilation. Inadequate pain control reduces the capacity to cough, mobility, increases the frequency of atelectasis, and prolongs recovery. Infiltration of local anesthetics near the surgical wound has shown to improve early postoperative pain in various surgical procedures.
Magnesium is the fourth most plentiful cation in our body. It has antinociceptive effects in animal and human models of pain.
详细描述
Effective pain relief after cardiac surgery has assumed importance with the introduction of fast track discharge protocols that requires early weaning from mechanical ventilation. Inadequate pain control reduces the capacity to cough, mobility, increases the frequency of atelectasis, and prolongs recovery.
A major cause of pain after cardiac surgery is the median sternotomy particularly on the first two postoperative days.
The most often used analgesics in these patients are parenteral opioids which can lead to undesirable side-effects as sedation, respiratory depression, nausea, and vomiting.
Infiltration of local anesthetics near the surgical wound has shown to improve early postoperative pain in various surgical procedures.
Magnesium is the fourth most plentiful cation in our body. It has antinociceptive effects in animal and human models of pain.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- Double (Participant, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 60 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •18-60 years old
- •American Society of Anesthesiologists physical status II and III
- •Patients scheduled for open heart surgery with sternotomy
排除标准
- •Emergency surgery
- •Clinically significant kidney or liver disease
- •Patients allergic to local anesthetic
- •Patients with prolonged CPB time (>120 min)
- •Patients required intra-aortic balloon pump
研究组 & 干预措施
A magnesium
Consists of 20 patients:
Each receive bupivacaine 0.125% with 5% magnesium sulfate by infusion through a small diameter multi-hole soft catheter generally used for epidural analgesia positioned anterior to the sternum above the fascia in the subcutaneous tissue during wound closure for 48 hours postoperative. A bolus of 5 ml of the study solution will be injected in the catheter after aspiration test before connection to infusion pump that delivers continuous infusion pump that delivers continuous infusion at a fixed rate of 5 ml/h.
postoperative : 25 µg fentanyl for breakthrough pain. placebo will be given in same intravenous instead of paracetamol and ketorolac of group B , to keep the investigator blinded
干预措施: Magnesium Sulfate and Bupivacaine 0.125% (Drug)
结局指标
主要结局
Pain assessment using a VAS
时间窗: up to day 2 postoperative
Pain score postoperatively on patient's arrival at the ICU, every 4 h for 12 h then every 6 h for 48 h using a VAS (0 = no pain, 10-the worst pain imaginable)
次要结局
- serum cortisol level(first and second postoperative day)
研究者
Emad Zarief , MD
Lecturer of Anesthesia and critical care Medicine
Assiut University