title: A retrospective study of 29 cases of otitis media/interna in dairy calves.
abstract: Epidemiological data, clinical findings, laboratory data, medical imaging, and outcomes were reviewed in 29 dairy calves with otitis media/interna. Age at admission ranged from 1 to 24 wk. The majority of calves were referred during winter. Clinical signs included drooping ear, ptosis, head tilt, abnormal nystagmus, strabismus, dysphagia, regurgitation, stiff neck, opisthotonos, facial hyperesthesia, and purulent aural discharge. Intranasal endoscopic examination of 5 animals revealed nasopharyngeal collapse in 4. Cerebrospinal fluid (CSF) was abnormal in all of 7 cases. Mycoplasma bovis was cultured from all but 1 case with external ear or tympanic bullae samples (n = 12), and Mycoplasma arginini was cultured from the remaining ear sample. Radiographs of the tympanic bullae were performed in 24 calves, tomodensitometry (CT) in 3 calves and ultrasound in 4 calves. According to medical imaging techniques or necropsy, 69% of the cases were classified as chronic. Mean duration of treatment was 23.3 d. The rate of clinical recovery was 75%.
  
  
  
  Epidemiological data, clinical findings, laboratory data, medical imaging, and outcomes were reviewed in 29 dairy calves with otitis media/interna. Age at admission ranged from 1 to 24 wk. The majority of calves were referred during winter. Clinical signs included drooping ear, ptosis, head tilt, abnormal nystagmus, strabismus, dysphagia, regurgitation, stiff neck, opisthotonos, facial hyperesthesia, and purulent aural discharge. Intranasal endoscopic examination of 5 animals revealed nasopharyngeal collapse in 4. Cerebrospinal fluid (CSF) was abnormal in all of 7 cases.Mycoplasma boviswas cultured from all but 1 case with external ear or tympanic bullae samples (n= 12), andMycoplasma argininiwas cultured from the remaining ear sample. Radiographs of the tympanic bullae were performed in 24 calves, tomodensitometry (CT) in 3 calves and ultrasound in 4 calves. According to medical imaging techniques or necropsy, 69% of the cases were classified as chronic. Mean duration of treatment was 23.3 d. The rate of clinical recovery was 75%.
authors: Centre Hospitalier Universitaire Vétérinaire, Université de Montréal, Saint-Hyacinthe, C.P. 5000 (Québec) J2S 7C6.
authors: Véronique
authors: V
authors: Bernier Gosselin
authors: David
authors: D
authors: Francoz
authors: Marie
authors: M
authors: Babkine
authors: André
authors: A
authors: Desrochers
authors: Sylvain
authors: S
authors: Nichols
authors: Elizabeth
authors: E
authors: Doré
authors: Christian
authors: C
authors: Bédard
authors: Joane
authors: J
authors: Parent
authors: Julie-Hélène
authors: JH
authors: Fairbrother
authors: Gilles
authors: G
authors: Fecteau
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology*; D004432:Ear, Middle / Q000382:microbiology / Q000473:pathology; D005260:Female; D007762:Labyrinthitis / Q000175:diagnosis / Q000453:epidemiology / Q000662:veterinary*; D009174:Mycoplasma / Q000302:isolation & purification; D009175:Mycoplasma Infections / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology / Q000662:veterinary*; D010033:Otitis Media / Q000175:diagnosis / Q000453:epidemiology / Q000662:veterinary*; D012189:Retrospective Studies
chemical_list: D000900:Anti-Bacterial Agents