Functional electrical stimulation of the left recurrent laryngeal nerve using a vagus nerve stimulator in a normal horse.
The aim of this study was to assess the feasibility of implanting an existing vagus nerve stimulating (VNS) electrode around the recurrent laryngeal nerve. The stimulus response characteristics required to achieve abduction of the ipsilateral arytenoid by the VNS electrode in the normal horse could then be determined. The electrode was wound around the left recurrent laryngeal nerve at the cervical level and connected to a pulse generator. Stimulus response characteristics were obtained by measuring stimulated arytenoid displacement endoscopically in the standing, non-sedated horse. A full and sustained abduction of the arytenoid was obtained with a stimulation frequency of 25 Hz and intensity of 1 mA with a pulse width of 250 μs.
Vanschandevijl
Katleen
K
Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium. katleenvanschandevijl@hotmail.com
Nollet
Heidi
H
Vonck
Kristl
K
Raedt
Rorecht
R
Boon
Paul
P
Roost
DirkVan
D
Martens
Ann
A
Deprez
Piet
P
D000818:Animals; D001193:Arytenoid Cartilage / Q000502:physiology / Q000601:surgery; D004558:Electric Stimulation / Q000295:instrumentation / Q000379:methods*; D004567:Electrodes, Implanted / Q000662:veterinary*; D007839:Functional Laterality; D006736:Horses / Q000502:physiology* / Q000601:surgery; D007821:Laryngeal Muscles / Q000502:physiology / Q000601:surgery; D012009:Recurrent Laryngeal Nerve / Q000502:physiology* / Q000601:surgery; D055536:Vagus Nerve Stimulation / Q000295:instrumentation / Q000379:methods / Q000662:veterinary