Otitis In Dogs ___________________________________ Management in - PDF document

What to Do About Ear Problems in Shelter and Foster Home Dogs June 4, 2015 ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Otitis In Dogs ___________________________________ Management in Shelters ___________________________________ and Foster Homes ___________________________________ Karen Moriello, DVM, DACVD Clinical Professor of Dermatology ___________________________________ University of Wisconsin-Madison Madison Wisconsin, USA ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Advancing animal and human health with science and compassion 3 1

What to Do About Ear Problems in Shelter and Foster Home Dogs June 4, 2015 ___________________________________ ___________________________________ Clinical Picture Any age, breed or sex ___________________________________ More common in warm weather More common in dogs with poor husbandry ___________________________________ Conformational risk factors Pendulous ears ___________________________________ Hair in the canal Narrowed canals (e.g., shar pei dog) ___________________________________ Breed risks-high prevalence of allergic disease/cornification defects ___________________________________ Advancing animal and human health with science and compassion 4 ___________________________________ ___________________________________ Clinical Signs ___________________________________ Scratching, rubbing ears Shaking head ___________________________________ Odd carriage to the head-to the side or head tilt Odor, exudate, blood ___________________________________ Aural hematoma Painful ears and associated behaviors ___________________________________ ___________________________________ Advancing animal and human health with science and compassion 5 ___________________________________ ___________________________________ Anatomy of the Dog Ear ___________________________________ Pinna Inner ear ___________________________________ Vertical canal ___________________________________ Horizontal canal ___________________________________ Bulla/middle ear Tympanic membrane ___________________________________ Advancing animal and human health with science and compassion 6 2

What to Do About Ear Problems in Shelter and Foster Home Dogs June 4, 2015 ___________________________________ ___________________________________ “Recipe for Otitis” ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Advancing animal and human health with science and compassion 7 ___________________________________ ___________________________________ Inflammation ___________________________________ Increases volume of secretions in the ear Creates/contributes to stenosis ___________________________________ Increase in internal temperature Changes surface of ear canal and environment ___________________________________ ___________________________________ ___________________________________ Advancing animal and human health with science and compassion 8 ___________________________________ ___________________________________ Stenosis ___________________________________ Traps ear secretions Prevents normal ‘cleaning of ear canal’ ___________________________________ Increases humidity in ear Inflammation-stenosis-more inflammation-even more stenosis ___________________________________ Major cause of pain Prevent topical medications from reaching target area ___________________________________ Can be temporary, if left untreated ear can become fibrotic or even calcified ___________________________________ Advancing animal and human health with science and compassion 9 3

What to Do About Ear Problems in Shelter and Foster Home Dogs June 4, 2015 ___________________________________ ___________________________________ Micro-Organisms Bacteria alone do not constitute an infection!! Need ___________________________________ concurrent clinical signs Normal flora ( Staphylococcus, Streptococcus, Malassezia ) ___________________________________ Bacteria in association with clinical signs Rods, especially Pseudomonas ___________________________________ Yeast Cocci ___________________________________ ___________________________________ Advancing animal and human health with science and compassion 10 ___________________________________ ___________________________________ Cost Effective Diagnostics ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Advancing animal and human health with science and compassion 11 ___________________________________ ___________________________________ Cost Effective Diagnostics ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ 6/2/2015 UNIVERSITY OF WISCONSIN – MADISON 12 4

What to Do About Ear Problems in Shelter and Foster Home Dogs June 4, 2015 ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide for staining ___________________________________ Slide in mineral oil ( Demodex and Otodectes) ___________________________________ ___________________________________ ___________________________________ Thumb Rules for Ear Cytology • Core diagnostic for ear disease ___________________________________ • Interpret in light of whether or not there are clinical signs • Abnormal findings in the presence of clinical signs need an ___________________________________ action plan ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Typical “normal” debris from “dirty ear” ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Advancing animal and human health with science and compassion 15 5

What to Do About Ear Problems in Shelter and Foster Home Dogs June 4, 2015 ___________________________________ ___________________________________ Cytological Specimens ___________________________________ Cellular Samples • Neutrophils- assume infection ___________________________________ • Number of organisms-not accurate reflection of severity of infection-what are clinical signs? ___________________________________ • Cocci and/or Yeast only: allergic diseases and primary seborrheic disease • Rods: worst case scenario is Pseudomonas ___________________________________ ___________________________________ ___________________________________ ___________________________________ Malassezia ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Advancing animal and human health with science and compassion 17 ___________________________________ ___________________________________ Cocci and Rods Vs. Yeast ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Advancing animal and human health with science and compassion 18 6

What to Do About Ear Problems in Shelter and Foster Home Dogs June 4, 2015 ___________________________________ ___________________________________ Intra and Extra Cellular Cocci ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Advancing animal and human health with science and compassion 19 ___________________________________ ___________________________________ Nuclear Streaming ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Advancing animal and human health with science and compassion 20 ___________________________________ ___________________________________ Otitis Triage Examination Obvious trauma? ___________________________________ Acute and curable? ___________________________________ Complicated problem? ___________________________________ Clearly end stage ear(s)? ___________________________________ Immediate surgery? ___________________________________ Advancing animal and human health with science and compassion 21 7