Evaluation of Lumbar Plexus Block Success With Near Infrared Spectroscopy (NIRS)

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-11-11

Study Completion Date

2024-01-13

Brief Summary

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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.

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Detailed Description

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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.

Conditions

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Nerve Block Lumbar Plexus Near Infrared Spectroscopy

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Near İnfrared Spektroskopi (NIRS)

Peripheral oxygen saturation to be measured with NIRS device

Group Type EXPERIMENTAL

Near Infrared Spectroscopy

Intervention Type DEVICE

Two NIRS probes will be attached to the extremity to be operated on and to the other lower extremity on the opposite side, at a level approximately coinciding with the midline above the quandriceps femoris muscle.

Interventions

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Near Infrared Spectroscopy

Two NIRS probes will be attached to the extremity to be operated on and to the other lower extremity on the opposite side, at a level approximately coinciding with the midline above the quandriceps femoris muscle.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* 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.

Exclusion Criteria

* 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

Minimum Eligible Age

18 Years

Maximum Eligible Age

90 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No