title: Establishment of a method to measure length of the ulnar nerve and standardize F-wave values in clinically normal beagles.
abstract: We designed a new method of measuring the length of the ulnar nerve and determining standard values for F-wave parameters of the ulnar nerve in clinically normal beagles. Nerve length must be precisely measured to determine F-wave latency and conduction velocity. The length of the forelimb has served as the length of the ulnar nerve for F-wave assessments, but report indicates that F-wave latency is proportional to the length of the pathway traveled by nerve impulses. Therefore, we measured the surface distance from a stimulus point to the spinous process of the first thoracic vertebra (nerve length 1) and the anterior horn of the scapula (nerve length 2) as landmarks through the olecranon and the shoulder blade acromion. The correlation coefficients between the shortest F-wave latency and the length of nerves 1, 2 or the forelimb were 0.61, 0.7 and 0.58. Nerve length 2 generated the highest value. Furthermore, the anterior horn of the scapula was easily palpated in any dog regardless of well-fed body. We concluded that nerve length 2 was optimal for measuring the length of the ulnar nerve.
authors: Department of Veterinary Diagnostic Imaging, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
authors: Shun
authors: S
authors: Hirasawa
authors: Miki
authors: M
authors: Shimizu
authors: Yuumi
authors: Y
authors: Marui
authors: Miori
authors: M
authors: Kishimoto
authors: Seiichi
authors: S
authors: Okuno
mesh_terms: D000818:Animals; D001285:Atropine; D001837:Body Weights and Measures / Q000379:methods / Q000662:veterinary*; D004285:Dogs; D004558:Electric Stimulation; D005260:Female; D008297:Male; D009431:Neural Conduction / Q000502:physiology*; D015742:Propofol; D014459:Ulnar Nerve / Q000033:anatomy & histology* / Q000502:physiology
chemical_list: D001285:Atropine; D015742:Propofol
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