The instrument and accessories are an important part of the electrodiagnostic (EDX) testing. Their functional understanding is useful to recognize and reduce various artifacts and noise/interference in the signal. In this review, we will describe the technical specifications of various components of the instrument, and their effect on signals and noise. This will be illustrated using example of electromyography and nerve conduction studies. However the same principles also apply to other modalities of testing. We will also provide general strategies to reduce noise and artifacts, followed by some modality specific examples.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/B978-0-444-64032-1.00003-5 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Iatrogenic "overshoot" nerve injuries: imaging features.
Skeletal Radiol
June 2024
Department of Radiology and Imaging, Hospital for Special Surgery, New York, NY, USA.
Objective: Describe features of iatrogenic "overshoot" nerve injuries on ultrasound and MRI, which occur when an instrument passes through the bone and injures the nerve after it penetrates the opposite cortex.
Materials And Methods: After a keyword search of the radiology database at a tertiary care orthopedic hospital from January 2016 to December 2022, those fulfilling the inclusion criteria of (1) instrumentation through the bone during surgery, (2) acute neuropathy immediately after surgery, (3) nerve injury confirmed on electrodiagnostics, and (4) imaging consistent with overshoot nerve injury were included. Imaging studies were retrospectively evaluated to determine primary and secondary signs of an overshoot nerve injury.
Sacral Neuromodulation Changes Pelvic Floor Activity in Overactive Bladder Patients-Possible New Insights in Mechanism of Action: A Pilot Study.
Neuromodulation
December 2022
Department of Urology, Antwerp Surgical Training, Anatomy and Research Centre (ASTARC), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium; Department of Urology, Antwerp University Hospital, Edegem, Belgium. Electronic address:
Objectives: To evaluate if electrodiagnostic tools can advance the understanding in the effect of sacral neuromodulation (SNM) on pelvic floor activity, more specifically if SNM induces changes in pelvic floor muscle (PFM) contraction.
Materials And Methods: Single tertiary center, prospective study (October 2017-May 2018) including patients with overactive bladder syndrome undergoing SNM. Electromyography of the PFM was recorded using the Multiple Array Probe Leiden.
Introduction/aims: Our electrodiagnostic laboratory uses reference limits (RL) that have been handed down for four decades. With changes in instrumentation and technique, we wish to know if our RL should be modified. It is also useful to have RL based on patient demographics.
View Article and Find Full Text PDFComparison of nerve conduction parameters in canine studies using recording needle and surface electrodes.
Vet J
October 2020
School of Veterinary Sciences, University of Bristol, Langford Small Animal Hospital, Langford, Bristol BS40 5DU, UK.
Surface electrodes have been used in electromyography and nerve conduction studies in human and veterinary medicine, but comparisons have not been made between surface and needle electrode recordings in dogs. Our aim in this method comparison study was to determine whether surface electrodes captured larger compound motor action potentials (CMAP) than needle electrodes. Tibial nerve CMAP from 25 dogs with normal limb function was acquired using both surface and needle recording electrodes; the stimulus was elicited with monopolar concentric needles.
View Article and Find Full Text PDFEstablishing standards for acceptable waveforms in nerve conduction studies.
Muscle Nerve
March 2020
American Association of Neuromuscular & Electrodiagnostic Medicine, Rochester, Minnesota.
Introduction: The purpose of this position statement is to clarify what constitutes an acceptable nerve conduction study (NCS) waveform in the practice of electrodiagnostic (EDx) medicine.
Methods: The American Association of Neuromuscular & Electrodiagnostic Medicine convened an expert panel to analyze the typical deficiencies of NCS waveforms seen when performed by unqualified providers and/or providers using substandard equipment and also to describe basic standards that all proper NCS waveforms should meet.
Results: An acceptable NCS waveform should include clearly identifiable polarity, configuration, onset, peak(s), and return to baseline.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!