Acta Scientiae Veterinariae, 2011. 39(4): 1004.
ISSN 1679-9216 (Online)
Ablação de canal auditivo vertical em um cão
Vertical Ear Canal Ablation in a dog
Fernanda Soldatelli Valente¹ , Kauê Danilo Helene Lemos dos Reis¹,Frederico Aécio Carvalho Soares¹, Tatiane da Silva Mottin¹ & Emerson Antonio Contesini²
Background: The external otitis is an inﬂammatory process that gets at the pinna and the external acoustic meatus of many animals; it can be a pathological process with acute, chronic or still recurrent chronic evolution. In dogs, the external otitis has high clinic importance. This condition could dostenosis or acoustic duct occlusion, inhibiting the ear’s cleanliness and the application of topical preparations as a way of medical treatment. The vertical acoustic duct’s ablation is indicated when all this are ill; however the horizontal duct keeps normal. This employment’s goal is report a case of ablation at vertical acoustic duct in a male dog, Husky Siberiano race, seven years old whichshowed chronic and recurrent external otitis. Case: A dog with chronic and recurrent otitis historic and some bids of medicated treatments, without success therapeutic, it was rescued at Hospital of Clínicas Veterinárias at Universidade Federal do Rio Grande do Sul. The owner also reported that the acoustic duct was completely closed and the canine was prostrate and aggressive. In the physical examwas observed stenosis of the right acoustic canal, where had a small oriﬁce, approximately 2 mm, whereby purulent secretion was drained. The patient was submitted to screening’s exams like: complete CBC and skull radiography. In the presence of the historic and alterations observed in the clinical exam, it was routed to make an ablation of the vertical acoustic duct. The postoperative consisted ofantibiotic, anti-inﬂammatory and analgesics. External point dehiscence happened, choosing healing it for second intention. At forty-ﬁfth day postsurgical, the canine had already shown completely wound’s healing, without secretion by ostium at horizontal auditory duct and without any sign of pain to handle the ear. Discussion: The acoustic duct’s stenosis in the canine reported happened because ofthe chronicle external otitis that can change permanently the size and the external acoustic duct’s characteristics. The surgical proceeding made is an alternative technique that has been used when the entire vertical duct is found, grossly, distorted or ﬁlled in with a hyperplastic mucosa. The antibiotic used after surgery until the culture result and susceptibility testing it was amoxicillinwith clavulanic acid, once which has already known the effectiveness on external and medium otitis treatment. The dehiscence of some points and the wound’s infection happened probably cause of the surgical manipulation of inﬂamed and septic tissues or still cause of the inappropriate dead space closing or inappropriate drainage. It was chosen the healing for second intention using in it an ointmentcomposed by collagenase and chloramphenicol. It was used an ear solution in locus, containing anti-inﬂammatory, antibacterial and anesthetic to minimize the inﬂammation, infection and pain at external ear, even after surgical treatment. The discomfort and the pain to manipulate and touch at right ear were obvious on clinical treatment and also what it was identiﬁed by the owner like an aggressiveanimal’s behavior decreased substantially after the surgical proceeding, could be classiﬁed as absent at the revaluation in forty-ﬁfth days postoperative. The vertical portion’s ablation of the acoustic duct is a technique little used and documented in veterinary medicine, once that has really indications points. The surgical proceeding showed to be important, because allow the secretions...