Near Infrared Spectroscopy (NIRS) Evaluation of Lumbar Plexus Block Success for Lower Extremity Orthopedic Surgery
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 发起方
- 入组人数
- 40
- 主要终点
- rso2
研究概览
简要总结
Tests such as the pin-prick test, cold application or the Bromage scale are currently used to measure the success of nerve blocks and are considered subjective assessments as they require verbal consent from the patient.
Near Infrared Spectroscopy (NIRS) measures the differential absorption and reflection of near infrared light transmitted by human tissues, providing a tissue-oxygen saturation index. Modern NIRS-based instruments use multiple detectors to filter spectroscopy data from skin structures to detect subcutaneous tissue oxygenation.
Successful regional anesthesia results in decreased sympathetic activity within the distribution of blocked nerves. Regional oxygen saturation (rSO2) has been shown to increase in innervated areas after sympathetic block.
详细描述
The aim of this study was to show whether the success of lumbar plexus block applied in lower extremity orthopedic surgeries can be evaluated by Near Infrared Spectroscopy (NIRS), which is used to measure tissue oxygenation.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •18-90 years old
- •femoral neck fracture,
- •femoral shaft fracture,
- •hip replacement surgery
- •who will undergo velumbar plexus block will be included in the study.
排除标准
- •BMI>40 kg/m2
- •infection in the block area
- •peripheral neuropathy,
- •hemoglobinopathy
- •peripheral vascular disease
- •allergy to local anesthetics
- •patients with contraindications for lumbar plexus block
结局指标
主要结局
rso2
时间窗: 40 minutes
The regional oxymetry probe will be placed in the the quandriceps femoris muscle, one on the extremity to be operated on and the other on the opposite lower extremity.
次要结局
- blood pressure values(40 minutes)
- sensory block level(40 minutes)
- so2(40 minutes)
研究者
Korgün Ökmen
Principal Investigator
Bursa Yüksek İhtisas Education and Research Hospital