Establishing high‐quality reference values for nerve conduction studies: A report from the normative data task force of the American Association Of Neuromuscular &amp; Electrodiagnostic Medicine

Dillingham, Timothy R.; Chen, Shan; Andary, Michael; Buschbacher, Ralph M.; Toro, David Del; Smith, Benn E.; Zimmermann, K.; So, Yuen T.

doi:10.1002/mus.25204

Cited by 60 publications

(75 citation statements)

References 18 publications

(47 reference statements)

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“…Moreover, in our study we included a large sample of healthy subjects from a wide range of age, so our results should probably be more generalizable. In their article, Dillingham et al recommended that skin temperature should be maintained between 32 and36°C . In our study, cutaneous temperature was slightly lower (31.78 ± 1.86).…”

Section: Discussioncontrasting

confidence: 45%

Phrenic Nerve Conduction in Healthy Subjects

Vincent¹,

Court-Fortuné²,

Costes³

et al. 2019

Muscle and Nerve

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Introduction: Assessment of diaphragm compound muscle action potential by noninvasive phrenic nerve stimulation at the neck is well described. However, normal values in a large cohort of healthy subjects are lacking. Our objective was to determine reference values of phrenic nerve conduction in healthy subjects. Methods: We recruited 155 healthy subjects (25–79 years old) and measured mean amplitude (PhrenAmp) and latency (PhrenLat) of motor responses according to Bolton's method. Results: The lower limit for PhrenAmp was 0.28 and 0.25 mV and the upper limit for PhrenLat was 8.41 and 8.56 ms for right and left side, respectively. PhrenLat was correlated with age. PhrenAmp, PhrenLat and area were significantly higher in men. Tolerance to phrenic nerve stimulation was excellent. Conclusions: Our study provides normative values of phrenic nerve motor responses in a large cohort of healthy subjects and identifies age and sex as factors of variation. Muscle Nerve 59:451–456, 2019

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Section: Discussioncontrasting

confidence: 45%

Phrenic Nerve Conduction in Healthy Subjects

Vincent¹,

Court-Fortuné²,

Costes³

et al. 2019

Muscle and Nerve

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“…Despite standardization of our measurements, ambient temperature and skin temperature during the NCS remain as confounders. Moreover, in some instances, international standards are controversial, for example, when choosing a method for warming of limbs . NCSs in this study were not performed as detailed as they are necessary for diagnosis of a CIDP or for a primarily electrophysiological question, which is a limitation of our NCS data.…”

Section: Discussionmentioning

confidence: 99%

Clinical, Sonographic, and Electrophysiologic Longitudinal Features of Chronic Inflammatory Demyelinating Polyneuropathy

Fisse

Pitarokoili

Trampe

et al. 2018

Journal of Neuroimaging

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BACKGROUND AND PURPOSE Several studies have aimed to find potential biomarkers to simplify the diagnosis of chronic inflammatory demyelinating polyneuropathy (CIDP) and to monitor and predict the disease course. However, reliable markers are still lacking. We aimed to investigate whether high‐resolution nerve ultrasound (HRUS) is suitable for monitoring the long‐term clinical course of CIDP. METHODS Twenty patients fulfilling the definite diagnostic criteria of CIDP received clinical examination, evaluation of the INCAT (inflammatory neuropathy cause and treatment) overall disability sum score (ODSS) as well as nerve conduction studies, and HRUS every 6 months over a median follow‐up time of 34 months. Patients were divided into clinically stable/regressive disease course or progressive disease course according to the development of the ODSS. RESULTS The intranerve cross‐sectional‐area (CSA) variability of the nerves of the lower extremity increased with disease progression, whereas it remained unchanged in patients with a stable or remitting disease course. CONCLUSION Nerve ultrasound can be used as a method to objectify the long‐term disease course in CIDP patients. The intranerve CSA variability is suitable for monitoring the clinical course of patients with CIDP.

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“…A new technique was developed to evaluate the medial femoral cutaneous sensory nerve that fulfills all the requirements stated in the guidelines from the NDTF and AANEM . SNAPs were obtained from all 104 subjects, regardless of weight, height, gender, or age.…”

Section: Discussionmentioning

confidence: 99%

“…The objective of this study was to describe a new technique for the evaluation of the medial femoral cutaneous sensory nerve. We also intended to establish the reference values for a healthy population, taking into account the guidelines required by the Normative Data Task Force (NDTF) of the American Association of Neuromuscular & Electrodiagnostic Medicine (AANEM) …”

Section: Introductionmentioning

confidence: 99%

Medial femoral cutaneous nerve conduction study with distal recording: A novel technique

et al. 2020

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Background A new technique to obtain the sensory nerve action potential (SNAP) of the medial femoral cutaneous nerve is described. Methods SNAPs were recorded from 104 subjects with a bar recording electrode 10 cm proximal to the patella along an imaginary line drawn between the medial edge of the patella and the femoral pulse below the inguinal ligament. Stimulation was applied 14 cm proximal to the recording point. Results There were 104 healthy subjects. Onset latency of the SNAPs was 2.20 ± 0.16 ms (mean ± SD), peak latency was 2.70 ± 0.16 ms, peak‐to‐peak amplitude was 7.5 ± 3.0 μV, and conduction velocity was 51.5 ± 3.0 m/s. The side‐to‐side difference in the mean amplitude was 22.27 ± 13.6%. Conclusions This new technique is easy, reliable, and reproducible, and should prove useful for the evaluation of neuropathies of the medial femoral cutaneous nerve.

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Establishing high‐quality reference values for nerve conduction studies: A report from the normative data task force of the American Association Of Neuromuscular & Electrodiagnostic Medicine

Abstract: Rigorous criteria enable identification of high-quality studies dealing with nerve conduction reference values. This represents the first step toward the overarching goal of recommending NCS techniques and reference values for electrodiagnostic medicine. Muscle Nerve 54: 366-370, 2016.

Cited by 60 publications

References 18 publications

Phrenic Nerve Conduction in Healthy Subjects

Phrenic Nerve Conduction in Healthy Subjects

Clinical, Sonographic, and Electrophysiologic Longitudinal Features of Chronic Inflammatory Demyelinating Polyneuropathy

Medial femoral cutaneous nerve conduction study with distal recording: A novel technique

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