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[Methods, indications and validation of intraoperative nerve conductivity testing].
D Burg1, M Infanger, C Meuli-Simmen
1Klinik für Wiederherstellungschirurgie, Universitätsspital Zürich, Switzerland. doris.burg@chi.usz.ch
Summary
Intraoperative nerve action potential (NAP) and somatosensory evoked potential (SEP) recordings reliably detect nerve regeneration, preventing unnecessary surgery. These electrodiagnostic methods guide nerve repair and assess nerve function during operations.
Area of Science:
- Neuroscience
- Surgical Technology
- Electrophysiology
Context:
- Nerve surgery requires methods to assess nerve fiber viability and guide operative decisions.
- Histology and surgical outcomes traditionally validate electrodiagnostic procedures.
- Intraoperative electrophysiology offers real-time nerve function assessment.
Purpose:
- To explain techniques for intraoperative nerve action potential (NAP) and somatosensory evoked potential (SEP) recording.
- To detail the interpretation, features, and limitations of these electrodiagnostic methods.
- To demonstrate the utility of intraoperative nerve testing in various surgical scenarios.
Summary:
- Reliable neurography results using NAP and SEP detect nerve regeneration across lesions earlier than clinical signs.
- NAP recording of exposed nerves can prevent unnecessary nerve or fascicle resection.
- Nerve function evaluation is crucial for managing nerve parenchyma quality during surgery, aiding in brachial plexus lesions, nerve root assessment, and nerve reconstruction.
Impact:
- Reduces unnecessary surgical interventions by providing objective nerve regeneration data.
- Enhances surgical decision-making by evaluating nerve parenchyma quality in real-time.
- Complements preoperative assessments, improving the overall management of nerve injuries and malfunctions.