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Ultrasound-guided biopsy of the cricoarytenoideus lateralis muscle: technique and safety in horses.
O'Neill, H D; Ballegeer, E A; De Feijter-Rupp, H L; Stick, J A; Derksen, F J; Robinson, N E.
Afiliação
  • O'Neill HD; Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, USA.
Equine Vet J ; 46(2): 244-8, 2014 Mar.
Article em En | MEDLINE | ID: mdl-23679063
REASONS FOR PERFORMING STUDY: Current diagnosis of recurrent laryngeal neuropathy (RLN) depends upon disease recognition in the clinically affected horse. Biopsy of the intrinsic laryngeal muscles may provide a method to identify the changes in fibre-type composition that occur in RLN before clinical signs become apparent. OBJECTIVE: To develop an ultrasound-guided biopsy technique of the left cricoarytenoideus lateralis muscle (CALM) and evaluate its efficacy and safety in vivo. STUDY DESIGN: A longitudinal descriptive study. METHODS: Six standing horses underwent ultrasound-guided biopsy of the left CALM. Frozen muscle cores were obtained with a breast biopsy tool. Serial endoscopic, ultrasonographic and physical examinations before and for 8 weeks after the biopsy were assessed for iatrogenic trauma. Histologies of representative muscle core cross-sections were analysed for the total number of muscle fibres obtained with each biopsy. RESULTS: There were no immediate complications of the procedure and the left CALM was harvested in all instances. Biopsy samples had an average weight of 0.043 g (range = 0.023-0.077 g) and contained 3418 fibres in cross-section (range = 711-7143). Laryngeal endoscopic grade did not change significantly between prebiopsy and the end of the 8 week follow-up. The left CALM had significantly greater echogenicity than the right throughout the study (P<0.001), but there was no difference between the prebiopsy CALM echogenicity and that at completion of the study. CONCLUSIONS: Ultrasound-guided biopsy of the left CALM is safe and well tolerated, providing a minimally invasive method to obtain muscle from healthy horses. This new technique may be applicable in research and clinical settings.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Ultrassonografia / Cavalos / Músculos Laríngeos Tipo de estudo: Diagnostic_studies / Evaluation_studies Limite: Animals Idioma: En Revista: Equine Vet J Ano de publicação: 2014 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Ultrassonografia / Cavalos / Músculos Laríngeos Tipo de estudo: Diagnostic_studies / Evaluation_studies Limite: Animals Idioma: En Revista: Equine Vet J Ano de publicação: 2014 Tipo de documento: Article