Slowed Conduction Velocity of the Median Sensory Nerve Across the Carpal Tunnel in Normal Adults

Pyun, Sung Bom; Song, Woo-Hyun; Yoo, Seung Don

doi:10.1097/01.phm.0000171004.38035.9e

Cited by 13 publications

(6 citation statements)

References 21 publications

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“…No differences have been reported on the assessment of palm-to-wrist segment using either antidromic or orthodromic testing (Tackmann et al, 1981, Pyun et al, 2005). One of the key tests for the determination of a focal lesion in the median nerve is the comparison with another nerve (i.e., the radial or the ulnar) using either the same recording or the same stimulation site.…”

Section: Antidromic and Orthodromic Testing Of Carpal Tunnel Syndromementioning

confidence: 97%

“…No significant differences in diagnostic yield have been reported for conduction velocity calculated after onset or peak latency (Kasius et al, 2014). However, Pyun et al (2005) have drawn attention to the fact that onset latencies may give more false positive results than peak latency measurement with both orthodromic and antidromic techniques. Amplitude can be measured from baseline to the peak (negative phase) or peak to peak (including negative and positive phases).…”

Section: Technical Aspectsmentioning

confidence: 99%

“…It is therefore possible that the initial part of the antidromic SNAP includes the recording of distant volume conduction. This is another reason to support measuring peak rather than onset latency for the assessment of antidromic SNAPs in clinical practice (Pyun et al, 2005).

Fig.…”

Section: Differential Influence Of Technical Factors On Antidromic Anmentioning

confidence: 99%

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Antidromic vs orthodromic sensory median nerve conduction studies

Valls‐Solé

Leote

Pereira

2016

Clinical Neurophysiology Practice

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Section: Antidromic and Orthodromic Testing Of Carpal Tunnel Syndromementioning

confidence: 97%

Section: Technical Aspectsmentioning

confidence: 99%

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Antidromic vs orthodromic sensory median nerve conduction studies

Valls‐Solé

Leote

Pereira

2016

Clinical Neurophysiology Practice

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“…Focal neurophaty of the median nerve at the wrist, known as the carpal tunnel syndrome (CTS), is one of the most common peripheral entrapment neuropathies with prevalence of 3.7% to 5.8% in the general population ( 1 ). As CTS affects daily activities and quality of life in many patients, it is considered as a significant health problem.…”

Section: Introductionmentioning

confidence: 99%

Does Hypothyroidism Affect Post-Operative Outcome of Patients Undergoing Carpal Tunnel Release?

Roshanzamir¹,

Mortazavi²,

Dabbaghmanesh³

2016

Electron physician

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IntroductionRisk factors associated with Carpal Tunnel Syndrome include repetitive use of hand and wrist, advanced age, obesity, pregnancy, diabetes mellitus and thyroid disease. Decompression of the median nerve is the last treatment of choice usually indicated when negative results to conservative treatments remain for three months. In this study, we aimed to find out whether hypothyroid patients would respond to CTS surgical decompression differently in comparison to healthy individuals.MethodsThis case control study was conducted on patients with CTS in need of surgical release who were refered to Shahid Faghihi hospital, International Branch of Shiraz University of Medical Sciences, Shiraz, Iran from January 2013 to January 2015. Twenty-five hypothyroid and 22 euthyroid patients were recruited. Hypothyroidism was diagnosed based on clinical symptoms and serum TSH level. All patients were followed for three weeks after surgery and a Boston Carpal Tunnel Syndrome Questionnaire (BCTQ) was completed for them pre and post operation. An electrophysiological study was performed during the same follow up period. Statistical analysis was performed using SPSS version 16.ResultsThe CTS grade reported by electrophysiological study, decreased significantly 3 weeks after operation in comparison with preoperative grades (p<0.001). A significant decrease was observed in the immediate postoperative BCTQ scores compared to preoperative (p<0.001). Also a decrease was detected in the three weeks of postoperative follow up compared to immediate postoperative BCTQ scores (p<0.001) and preoperative BCTQ scores (p<0.001). Postoperative BCTQ scores of euthyroid patients decreased more in comparison to hypothyroid patients (p<0.001).ConclusionIt seems that, hypothyroidism has an effect on postoperative outcome of carpal tunnel release.

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“…Tanıda en yararlı test Tinel bulgusu ve Phalen testidir [5]. Karpal Tünel Sendromu tanısında hastanın semptom ve bulguları önemli olduğu kadar bu bulguların elektrofizyolojik olarak da desteklenmesi gerekmektedir [1][2][3][4][5][6][7][8][9][10]13]. Sinir iletim çalışmaları, KTS için en kesin tanısal testtir ve klinik olarak tanı konan hastaların %91-98 inde bozuktur [4][5][6][7][8][9].…”

Section: Introductionunclassified

Carpal Tunnel Syndrome: In Which Ratio does Electroneuromyography Comfirm the Diagnosis?

Evcılı¹

2012

Ann Clin Anal Med

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ÖzetAmaç: Median sinirin bilek hizasındaki kompresyonu en sık görülen tuzak nöropatidir. Bu çalışmamızın amacı, tanıda elektronöromiyografik (ENMG) incelemenin etkisini ve istemdeki ön tanının uygunluğunu araştırmaktı.Gereç ve Yöntem: ENMG Laboratuarımıza başvuran 500 hasta incelendi.Çalışmaya KTS(Karpal Tünel Sendromu) ön tanılı 276 hasta dahil edildi. Bulgular: Hastaların %62.8'inde istemdeki ön tanı ile ENMG sonucu varılan tanı arasında uyum saptandı. %37,2 hastada normal ENMG çalışma sonuçları bulundu. Sonuç: ENMG sonuçlarının tanıyı doğrulama oranının yüksek olmaması bize klinik değerlendirmenin yeterli yapılmadığını ve/veya gereksiz istemlerin yapıldığını düşündürmektedir. Anahtar KelimelerKarpal Tünel Sendromu; Tanı; Elektronöromiyografi; Median Sinir Abstract Aim: Compression of the median nerve at the wrist is the most frequently observed entrapment neuropathy. The aim of our study was to investigate the accuracy of clinically diagnosed CTS by using electroneuromyography (ENMG).Material and Method: 500 patients who applied to our ENMG laboratory were investigated. 276 CTS(Carpal Tunnel Syndrome) prediagnosed patients were included in the study. Results: There was a concordance between the referral diagnosis and the results of ENMG, in 62.8% of the patients. The ENMG results were normal in 37.2% of the patients. Discussion: There was a low verification rate for the prediagnosis of CTS by ENMG indicating that clinical evaluation alone is inaccurate in the diagnosis of CTS.

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Slowed Conduction Velocity of the Median Sensory Nerve Across the Carpal Tunnel in Normal Adults

Cited by 13 publications

References 21 publications

Antidromic vs orthodromic sensory median nerve conduction studies

Antidromic vs orthodromic sensory median nerve conduction studies

Does Hypothyroidism Affect Post-Operative Outcome of Patients Undergoing Carpal Tunnel Release?

Carpal Tunnel Syndrome: In Which Ratio does Electroneuromyography Comfirm the Diagnosis?

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