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KMID : 0368120160460020161
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Korean Circulation Journal
2016 Volume.46 No. 2 p.161 ~ p.168
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Numbness after Transradial Cardiac Catheterization: the Results from a Nerve Conduction Study of the Superficial Radial Nerve
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Jang Ho-Jun
Kim Ji-Young
Han Jae-Deok
Lee Hyun-Jong
Kim Je-Sang
Park Jin-Sik
Choi Rak-Kyeong
Choi Young-Jin
Shim Won-Heum
Kwon Sung-Woo
Kim Tae-Hoon
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Abstract
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Background and Objectives: Numbness on the hand occurs infrequently after a transradial cardiac catheterization (TRC). The symptom resembles that of neuropathy. We, therefore, investigated the prevalence, the predicting factors and the presence of neurological abnormalities of numbness, using a nerve conduction study (NCS).
Subjects and Methods: From April to December 2013, all patients who underwent a TRC were prospectively enrolled. From among these, the patients who experienced numbness on the ipsilateral hand were instructed to describe their symptoms using a visual analogue scale; subsequently, NCSs were performed on these patients.
Results: Of the total 479 patients in the study sample, numbness occurred in nine (1.8%) following the procedure. The NCS was performed for eight out of the nine patients, four (50%) of which had an abnormal NCS result at the superficial radial nerve. A larger sheath and history of myocardial infarction (p=0.14 and 0.08 respectively) tended towards the occurrence of numbness; however, only the use of size 7 French sheaths was an independent predictor for the occurrence of numbness (odds ratio: 5.50, 95% confidence interval: 1.06-28.58, p=0.042). The symptoms disappeared for all patients but one, within four months.
Conclusion: A transient injury of the superficial radial nerve could be one reason for numbness after a TRC. A large sheath size was an independent predictor of numbness; therefore, large sized sheaths should be used with caution when performing a TRC.
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KEYWORD
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Cardiac catheterization, Numbness, Superficial radial nerve lesion, Radial neuropathy
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