Ear Flashcards
(fucking pope oh joy can't wait for his questions)
Blood supply to the pinna is by these 3 vessels
- Caudal auricular vein
- Caudal auricular artery branches
- Cranial auricular vein
What’s going on here?
Auricular (Aural) Hematoma
What are the 3 proposed pathogenesis of auricular hematoma?
- Physical injury
- Head shaking, scratching
- Rarely documented
- Immune-mediated or inflammatory mechanism
- Hemorrhage
- From great auricular artery within cartilage plate
Natural course of auricular hematoma, ______ is deposited and rsults ina thickened _____ ear
- fibrin
- deformed
Fibrous reorganization results in “_______” contracture.
“cauliflower”
Treatment of Auricular Hematoma
• Conservative Management options? (3)
- Oral prednisolone +/- aspiration
- Needle aspiration and instillation of corticosteroid
- Indwelling Drains
Treatment of Auricular Hematoma
• Surgical Management is done for these 2 reasons?
- For larger chronic heamtomas
- OR if they reoccur after conservative management fails
For an indwelling drain for hematomas this can be done with sedation or local, make sure to Evacuate and ____ with sterile_____ to remove as much _____ material as possible
flush; saline; fibrinous
For indwelling drain we often use the ____ ____ tube, it’s left in until ____ heals besides drain path (__-__weeks)
- Larson teat tibe
- cavity
- 2-3 weeks
If the larson teat tube or indwelling drain is removed too soon what can take place
reoccurance
What treatment yieds this:
- Verygoodprognosis(>90%successreported)
- But May need more than one treatment
Aspiration and instillation of corticosteroid
What options are there surgery of hematomas for incision (2)
- Straight
- S-Shaped
What other surgical option creates fenstrations on _____ side of the ear
Dermal punch
- concave
What surgical option for hematoma provides multiple sites for drainage avodiing suture placement?
Laser fenestrations
Where are the sutures placed after surgical incision of the hematoma?
Sutures placed parallel to long axis of pinna
Blood supply to the pinna can be compromised if sutures are placed perpendicular to vessels convex side
We want to make sure we irrigate or remove fibrinous exudate, _____ the dead space for surgical incision of the aural hematoma and place multiple _____ sutures
- obliterate
- mattress
For aural hematoma Postoperative management:
Bandages typically used to ______ ear until sutures are removed, especially in patients that continue to shake their head postoperatively. may be difficult to maintain and keep clean
immobilize
What technique is best for aural hematoma surgery and what must be addressed
No single best technique
Underlying cause must be identified
What are the advantages/disadvantages for placing suture in cartilage?
- Advantages: more support, better alignment
- Disadvantage: may get thickening around sutures
Partial Amputation of the Pinna is the treatment for:
- _____ of portion of pinna
- Ear ______
- Ear tip _____
- _____(____) dermatitis
- Frostbite injury
- ______
- Avulsion o fportion of pinna
- Ear fissures
- Eartipdermatitis
- Actinic(Solar)dermatitis
- Cold/frostbiteinjury
- Neoplasia
For Partial Amputation of the Pinna
Suture _____ and _____ surface skin edges with _____ _____pattern making sure cartilage is covered
- concave and convex
- simple continuous
Otitis externa can be caused by:
- _____ infection or secondary to _____
- Generalized skin disease
- Predisposing factors (breed)
primary; inflamation
Trauma to the external canal can be caused by:
- ______wounds
- Avulsion of the ______ ear canal at the ______ liganment between vertical and horizontal canal
- Penetrating
- vertical
- annular ligament
Neoplasia to the external canal can be caused by:
- ______ gland tumors
- ______ cell carcinoma
- Sebaceous
- Squamous
