title: Postcontraction hyperemia after electrical stimulation: potential utility in rehabilitation of patients with upper extremity paralysis.
abstract: The purpose of this study was to compare postcontraction hyperemia after electrical stimulation between patients with upper extremity paralysis caused by upper motor neuron diseases and healthy controls. Thirteen healthy controls and eleven patients with upper extremity paralysis were enrolled. The blood flow in the basilic vein was measured by ultrasound before the electrical stimulation of the biceps brachii muscle and 30 s after the stimulation. The stimulation was performed at 10 mA and at a frequency of 70 Hz for 20 s. The mean blood flow in the healthy control group and in upper extremity paralysis group before the electrical stimulation was 60 ± 20 mL/min (mean ± SD) and 48 ± 25 mL/min, respectively. After the stimulation, blood flow in both groups increased to 117 ± 23 mL/min and 81 ± 41 mL/min, respectively. We show that it is possible to measure postcontraction hyperemia using an ultrasound system. In addition, blood flow in both groups increased after the electrical stimulation because of postcontraction hyperemia. These findings suggest that evaluating post contraction hyperemia in patients with upper extremity paralysis can assess rehabilitation effects.
authors.affiliation: Department of Orthopedic Surgery, Akita University Graduate School of Medicine.
authors.forename: Nobusuke
authors.initials: N
authors.lastname: Shibata
authors.forename: Toshiki
authors.initials: T
authors.lastname: Matsunaga
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kudo
authors.forename: Kana
authors.initials: K
authors.lastname: Sasaki
authors.forename: Takashi
authors.initials: T
authors.lastname: Mizutani
authors.forename: Mineyoshi
authors.initials: M
authors.lastname: Sato
authors.forename: Satoaki
authors.initials: S
authors.lastname: Chida
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Hatakeyama
authors.forename: Motoyuki
authors.initials: M
authors.lastname: Watanabe
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Shimada
mesh_terms: D001132:Arm / Q000098:blood supply / Q000503:physiopathology; D016022:Case-Control Studies; D004558:Electric Stimulation; D004599:Electric Stimulation Therapy; D006801:Humans; D006940:Hyperemia / Q000503:physiopathology*; D009119:Muscle Contraction; D018482:Muscle, Skeletal / Q000098:blood supply* / Q000502:physiology* / Q000503:physiopathology; D010243:Paralysis / Q000209:etiology / Q000503:physiopathology / Q000628:therapy; D012039:Regional Blood Flow