AI Article Synopsis
- A 19-month-old male crossbred Quarter Horse exhibited stiffness and muscle asymmetry in its hind limbs, along with myokymia in several muscle groups.
- Electromyographic studies revealed abnormal muscle activity, including high-frequency discharges and various muscle fiber irregularities.
- A histological analysis of the gluteal muscle indicated a combination of neurogenic and myopathic changes, confirming the diagnosis of neuromyotonia.
Article Abstract
This article describes the clinical and electromyographic findings of neuromyotonia in a 19-month-old male crossbred Quarter Horse that presented with stiffness and muscle asymmetry in the hind limbs as well as sacrococcygeal, paravertebral, and gluteal myokymia. An electromyographic study showed spontaneous continuous muscle fiber activity with high-frequency discharges, fibrillations, positive sharp waves, fasciculation potentials, and complex repetitive discharges. Histological examination of the gluteal muscle showed a mixed neurogenic and myopathic pattern. The findings are consistent with neuromyotonia.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6335518 | PMC |
| http://dx.doi.org/10.1111/jvim.15353 | DOI Listing |
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Neuromyotonia in a horse.
J Vet Intern Med
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Department of Veterinary Clinical Sciences, School of Veterinary Medicine and Animal Sciences, Sao Paulo State University (Unesp), Botucatu, Sao Paulo, Brazil.
This article describes the clinical and electromyographic findings of neuromyotonia in a 19-month-old male crossbred Quarter Horse that presented with stiffness and muscle asymmetry in the hind limbs as well as sacrococcygeal, paravertebral, and gluteal myokymia. An electromyographic study showed spontaneous continuous muscle fiber activity with high-frequency discharges, fibrillations, positive sharp waves, fasciculation potentials, and complex repetitive discharges. Histological examination of the gluteal muscle showed a mixed neurogenic and myopathic pattern.
View Article and Find Full Text PDFElectromyographic changes of motor unit activity in horses with induced hypocalcemia and hypomagnesemia.
Am J Vet Res
June 2002
Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, The Netherlands.
Objective: To determine whether electromyographic abnormalities are evident in skeletal muscles in horses with induced hypocalcemia and hypomagnesemia.
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