URT nosie Flashcards

1
Q

what are the reasons for treating URT noise?

A
  • Dyspnoea - difficulty breathing
  • Cosmetics
  • Poor performance
    ◦ URT causes60% of airflow resistance in resp tract
    ◦ decrease in diameter, increase resistance
    ◦ decrease O2 delivery
  • Other
    ◦ Dysphagia
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2
Q

what is done to diagnose URT noise

A
  • History
    ◦ when is the noise made, all though exercise, only at a certain time
  • Examination of the URT at rest
  • Dynamic observation
    ◦ Vary exercise intensities
    ◦ Consider effect of tack
    ◦ inspiratory or expiratory noise
  • Static respiratory endoscopy
  • Overground dynamic endoscopy
  • Also consider radiography, CT and occasionally ultrasonography
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3
Q

what pathologies can occur at the level of the nostril in horses? what are the treatments for these?

A
  • Epidermal inclusion cysts (atheromas)
    ◦ cosmetic
    ◦ need to take out the cyst sack if not will come back
  • Redundant alar folds
  • Lacerations affecting nostrils
    ◦ when heal cause a reduction in size - decreased airflow

Treatment
* Relatively straightforward
* Main aims are restoration of normal anatomy and good cosmetic effect

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4
Q

what congenital condition can affect the nose of horses?

A

‘Wry nose’
* Reconstruction can be complicated and expensive depending on degree of deviation
often euthanasia

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5
Q

name the paranasal sinuses?

A

Caudal group:
* Caudal maxillary
* Dorsal conchal
* Frontal
* Sphenopalatine
Rostral group:
* Rostral maxillary
* Ventral conchal

Septum between caudal and rostral maxillary sinuses (variable location usually 5cm from rostral aspect of facial crest).
Both maxillary sinuses open into caudal middle meatus via nasomaxillary aperture

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6
Q

what is the connection fo the teeth and the sinuses in horses?

A
  • Tooth roots of 4th, 5th and 6th cheek teeth lie within the maxillary sinuses
    ◦ infection causes sinusitis
  • Roots of 3rd cheek tooth forms rostral wall of rostral maxillary sinus
    ◦ infection may cause sinusitis
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7
Q

what are the conditions that affect the nasal passages in horses and what is the treatement?

A

Masses
* Fungal granuloma
* Neoplasia
* Ethmoid haematoma

Treatment
Attempt transendoscopic removal

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8
Q

when is sinus surgery indicated in horses?

A
  • Expansive lesions in paranasal sinus e.g. sinus cyst, neoplasia, ethmoid haematoma, tooth root abscess
  • Primary sinusitis
  • Severe trauma of facial bones
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9
Q

what condition causes a rattleing noise on exhalation in horses? when is it normally heard? what is the treatment for it?

A

Intermittent Dorsal Displacement of the Soft Palate, often at the end of exercise
treatment - * Tie forward (prosthesis to replace thyrohyoid muscle) – currently most popular and best success rate (80%)

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10
Q

what condition occurs to the pharynx in horses and may be associated with gutterap pouch tympany and dorsal displacement of the soft palate?

A

dynamic pharyngeal collapse
* Collapse of pharyngeal wall when negative pressure highest

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11
Q

what congenital condition affects the pharynx in horses?

A

cleft palate
* Nasal reflux of milk / food material and aspiration pneumonia
* Uncommon
* Diagnosed on endoscopy
* Poor prognosis - recurrent infections and poor athletic function - typically euthanised
* Surgery - poor success rate - not really justified ethicaly

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12
Q

what are the complications from recurent laryngeal neuropathy surgery?

A
  • Dysphagia – arytenoid cartilages come together when swallowing, and the epiglottis flips up, if the cartilage is tied back they can’t come together)
  • Aspiration pneumonia (temporary or permanent)
  • Avoid excessive abduction
  • Implant failure with laryngoplasty
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13
Q

what laryngeal condition is assocciated with high pitched noise on inspiration? what is the treatment?

A

Recurrent laryngeal neuropathy
* Typically idiopathic condition
* Grading system:
* At rest/exercise 1 to 4 (seven overall grades)

Treatment options:
* Laryngoplasty (tie back)
* Ventriculectomy (Hobday)
* Ventriculocordectomy
* Arytenoidectomy
* Neuromuscular pedicle graft

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14
Q

what is arytenoid chondropathy? how is it diagnosed?

A

A pathologic enlargement of one or both bilateral arytenoid cartilages resulting in poor performance, respiratory noise, and respiratory obstruction.

Diagnosis
* Endoscopy (resting)
◦ Size—compare to other side (tricky if bilateral)
◦ Mucosa—loss of “bumps”, breaks in surface
◦ Drainage, granulation tissue
* Palpation—rounded muscular process

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15
Q

how is arytenoid chondropathy treated?

A

Medical
* Antimicrobial
* Anti-inflammatories
◦ systemic and local
◦ Very important acutely
* Often improves significantly

Surgical
* Local excision (via endoscope or laryngotomy)
* Arytenoidectomy—failure of medical management
* Permanent tracheostomy
◦ esp if bilateral

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16
Q

what is Medial deviation of the aryepiglottic folds ? what is the treatment?

A

A condition in which the aryepiglottic folds collapse during strenuous exercise, partially obstructing the upper respiratory tract.
* Laser surgery to remove excess tissue (Can be done surgically under GA if no laser available)

17
Q

what congenital and developemtal conditon affects the epiglotis in horses? what is the treatment?

A

Subepiglottic cysts or granulomas
Treatment by removal
- surgical excision through laryngotomy
- oral removal using or snare wire

Good prognosis

18
Q

what are the 4 treatment options for epiglotic entrapment?

A
  1. Axial division per os
  2. Resection of aryepiglottic folds
  3. Axial division per nasum
  4. Transendoscopic laser division

All have complications – make sure you cut the right structure!
2, 3 and 4: no requirement for general anaesthesia

19
Q

what are the surgeries that are done to the trachea?

A

Most tracheal surgeries performed to bypass nasal passages, pharynx or larynx
◦ Tracheotomy (temporary)
◦ Tracheostomy (permanent)
* Intra-tracheal lesions ie foreign bodies, granulomas, neoplasia
* Tracheal collapse

20
Q

how is a tracheostomy performed?

A
  • Creation of a permanent stoma
  • Normally performed under anaesthesia
  • Partial resection of cartilage rings then mucosa sutured to skin
  • Wound care and aftercare is significant, and the owner should be advised of this beforehand
  • Potential complications include pulmonary infection and drowning
21
Q

how is a teacheotomy performed?

A
  • Performed in the cranial or mid third of neck - midline dissection to trachea (avoiding neurovascular structures)
  • Incision made between and parallel to cartilage rings (DO NOT CUT RINGS)
  • Tracheotomy tube (self-retaining silicone or metal J tubes) placed and secured with sutures or bandage
  • Aftercare - basic wound management and removing excess discharge
22
Q

what are three conditions that affect the gutteral pouch, what is the treatments for each of them?

A

Tympany – airflow in and out is not working properly, air goes in and can’t get out
* Fenestration of median septum (unilateral)
* Resection of plica salpingopharangeus
* Salpingopharangeal fistula

Empyema - puss
* Lavage via a Foley catheter

Chondroids – lumps of consolidated puss (eg after strangles)
* Basket removal
* Lavage
* Surgery