Patient Positioning on Supraclavicular Nerve Block
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 入组人数
- 6
- 试验地点
- 1
- 主要终点
- patient positioning
研究概览
简要总结
Blockade of the brachial plexus using a supraclavicular approach provides excellent anesthesia for upper extremity surgery. The most serious complication specific to this block is pneumothorax. Subsequent modifications of this block including the use of ultrasound have lowered the risk from 6% to <1%. Case reports remain and authors have described certain factors and strategies to reduce this risk. Most texts and journals describe the patient in a supine or semi-sitting position during the block. At the investigators institution the investigators perform the block in a semi-sitting position to facilitate needle tip visibility with ultrasound. The investigators plan to obtain ultrasound anatomic measurements in three different positions (supine, semi-sitting, sitting) using patients consented for supraclavicular nerve blocks.
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
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •all patients, 18 y/o to 65 y/o, who are scheduled to receive an ultrasound- guided supraclavicular nerve block
排除标准
- •patient refusal to be included in the study,
- •the presence of language barrier that inhibits proper communication with the patient, contraindications to regional anesthesia (local infection, severe pulmonary disease, or preexisting neuropathy)
- •history of allergy to amide local anesthetics or narcotics
- •the presence of a progressive neurological deficit
- •history of hepatorenal insufficiency
- •the presence of a coagulopathy or infection
- •pregnancy
- •a history of psychiatric disorder
- •inability to follow study protocol
结局指标
主要结局
patient positioning
时间窗: Postoperative Day One
Ultrasound measurements will be made at three different positions: Sitting, semi-sitting, and supine. The ultrasound measurements include A= skin to the pleura at the level lateral to the subclavian artery, B= skin to center of the subclavian artery, C= skin to first rib, D= skin to "corner pocket"
次要结局
未报告次要终点
研究者
Antoun Nader
Professor of Anesthesiology
Northwestern University