Needle electrodes
Technical aspects of needle electrodes are covered too а different place (Bа rkhaus, 1998 Barkhaus, 2005, Nandedkar, 2001, Nandedkar, 2002). Choose versus monopolar concentric needle electrodes are usually based on teacher education and biases. Some of the historical reasons, is no longer valid, because nearly all laboratory electrodes or disposable type. Both are available in various lengths. In general, often using electrodes of 50 mm both required a deeper, bigger muscle examined in many adults, particularly multifidus with 75 mm in case of need, as in obese patients. In the following discussion, the principles apply to both electrodes covered by concentric and monopolar needle, unless stated otherwise (e.g. potential's burner).
Benefits of concentric needle electrodes, with only one place for an active and reference (i.e. burner) recording electrode surfaces. There is also a large base of quantitative data on the characteristics of distinctive MUAP on the muscles of subjects of different age groups. Other electrodiagnostic consultants believe that the monopolar electrode is not as much of the harmful or better tolerated by patients. In our experience, patient tolerance depends mainly on the experience and skill of electrodiagnostic consultant.
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