Evaluation of Lumbar Plexus Block Success With Near Infrared Spectroscopy (NIRS)
- Conditions
- Near Infrared SpectroscopyNerve BlockLumbar Plexus
- Interventions
- Device: Near Infrared Spectroscopy
- Registration Number
- NCT06126133
- Lead Sponsor
- Bursa Yüksek İhtisas Education and Research Hospital
- Brief Summary
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.
- Detailed Description
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.
Recruitment & Eligibility
- Status
- NOT_YET_RECRUITING
- Sex
- All
- Target Recruitment
- 40
- 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.
- 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
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SINGLE_GROUP
- Arm && Interventions
Group Intervention Description Near İnfrared Spektroskopi (NIRS) Near Infrared Spectroscopy Peripheral oxygen saturation to be measured with NIRS device
- Primary Outcome Measures
Name Time Method rso2 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.
- Secondary Outcome Measures
Name Time Method blood pressure values 40 minutes systolic, diastolic and mean blood pressure values will be recorded non-invasively in mmhg.
sensory block level 40 minutes The sensory block level will be realised by cold testing at 10 minute intervals after applying the block.
so2 40 minutes fingertip SO2 measured by pulse oximetry
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