Usefulness of Pulse Oximeter Perfusion Index for Predicting the Success of Interscalene Brachial Plexus Blockade Under General Anesthesia
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 70
- 试验地点
- 1
- 主要终点
- Perfusion Index
研究概览
简要总结
This study was designed to determine whether the success or failure of interscalene brachial plexus block under general anesthesia can be predicted using perfusion index (PI).
详细描述
The success of peripheral nerve blocks is usually evaluated by assessment of sensory and motor function; however, this method cannot be applied in the patient who has uncheckable mental status, e.g. general anesthesia, or who is uncommunicable, e.g. different language user.
The perfusion index (PI) is a numerical value for the ratio between pulsatile and non-pulsatile blood flow measured by a special pulse oximeter, and PI had been proved as a useful tool for evaluation of successful supraclavicular nerve block in awake patients as an objective method.
With the use of ultrasound guidance in skilled hands, it is a reasonable option to perform neuraxial and peripheral regional blocks in sedated or anesthetized patients. However, there has been no evidence of applying PI for predicting the success of nerve block in general anesthetized patients.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Prospective
入排标准
- 年龄范围
- 20 Years 至 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •20-70 years old,
- •BMI 20-35 kg.m-2,
- •elective shoulder surgery,
- •ASA physical status I-III
排除标准
- •refusal of the patient,
- •comorbid with serious vascular disease,
- •diabetes,
- •allergy to local anesthetics,
- •patients on regular opioids,
- •peripheral neuropathy.
结局指标
主要结局
Perfusion Index
时间窗: change between before and 15 minutes after brachial plexus block
perfusion index measured applied to both blocked and non-blocked limbs using two separate oximeters
次要结局
- Motor function test on supraclavicular nerve and axillary nerve and(1 hour after surgery)
- Heart rate(change between before and 5 minutes after incision of surgical procedure)
- Sensory function test on supraclavicular nerve and axillary nerve(1 hour after surgery)
- Blood pressure(change between before and 5 minutes after incision of surgical procedure)
- Pain score(1 hour after surgery)
研究者
Seok Kyeong Oh
Assistant professor
Korea University Guro Hospital