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Brachycephalic Obstructive Airway Syndrome

Også kjent som: Brachycephalic Airway Syndrome, Brachycephalic Syndrome, BOAS, BAS, Upper airway obstruction syndrome

VeterinærgodkjentCatDogHaster: HighHvor vanlig: Common
Compiled from veterinary literature and clinical references· Updated 2026-07-30·How we create this

Kort fortalt

Brachycephalic Obstructive Airway Syndrome (BOAS) is a common, inherited condition affecting flat-faced pets. It occurs when compressed facial anatomy restricts airflow, causing severe breathing difficulties, heat intolerance, and digestive issues. Early surgical intervention is highly effective at restoring normal breathing and preventing life-threatening airway collapse.

Anatomical comparison of a normal dog airway versus a compressed brachycephalic airway.
The anatomical differences between a normal canine airway and the crowded, obstructed airway of a brachycephalic dog.

TL;DR. Arvelig luftveissykdom hos flate raser: trange luftveier, inspiratorisk anstrengelse, varmeintoleranse, kollapsrisiko; ofte kirurgi.

Normal luftvei versus komprimert brachycefal luftvei.

Hva er det?

Overskudd av bløtvev i kort skalle: stenotiske nesebor, forlenget bløte gane, av og til hypoplastisk trakea; undertrykk og sekundær larynxkollaps.

Årsaker og risikofaktorer

Medfødt brachycefali. Hund: mops, French Bulldog, English Bulldog, Boxer, Pekingese, Chinese Shar-Pei, Boston Terrier. Katt: perser, himalaya. Verre ved fedme og varme.

Tegn

  • Inspiratorisk anstrengelse (kardinal)
  • Stertor, stridor, snorking, anstrengelses-/varmeintoleranse, oppkast/regurgitasjon
  • Akutt: cyanose, kollaps, kraftig stridor

A French Bulldog showing signs of severe respiratory distress and open-mouth breathing.
Munnånding og utstrakt tunge tyder på nød.

Diagnostikk

Undersøkelse; laryngoskopi under sedasjon (gull); endoskopi, thoraxrøntgen, av og til blodgass.

An endoscopic view of an elongated soft palate blocking the larynx.
Forlenget bløt gane blokkerer larynx.

Behandling

Akutt: oksygen, kjøling, sedasjon, Glucocorticoids. Kirurgi: utvidelse av nesebor, stafylektomi, sakkelreseksjon.

Prognose

God ved tidlig kirurgi; forsiktig ved avansert larynxkollaps.

Forebygging

Ansvarlig avl, slank vekt, unngå varme, sele (ikke halsbånd).

Når ringe veterinær

Akutt: cyanose, kollaps, ukontrollerbar pesing, strukket hals/albuer ut, feber med åndenød.

Kilder

  • Current Techniques in Small Animal Surgery, 5th Edition, p. 404.
  • Small Animal Critical Care Medicine, 2nd Edition, pp. 117, 127.
  • Small Animal Internal Medicine, 5th Edition, p. 289.

My highlights & notes

Tegn og symptomer

increased inspiratory efforts· HallmarkGagging· CommonExcessive drooling· CommonBringing up undigested food· CommonStertor· CommonStertorous breathing· CommonVomiting (throwing up)· CommonTiring easily during activity· Commonheat intolerance· Commonloud breathing sounds· Commonmouth breathing· Commonrestless sleep· Commonsnoring· Commonstridor· CommonBlue gums or tongue (cyanosis)· OccasionalTrouble swallowing (dysphagia)· OccasionalFever· OccasionalExcessive drooling· OccasionalRestlessness· OccasionalFast breathing· Occasionalabnormal posture· OccasionalCollapse (suddenly going down)· OccasionalFainting· Occasional

Raser med høyere risiko

Engelsk bulldogFrench BulldogPugBoston TerrierBoxerChinese Shar-PeiHimalayan SheepdogPekingeseSaluki

Hvordan det diagnostiseres

  • Blood gas analysis
  • Bronchoscopy
  • Fluoroscopy
  • Laryngoscopy
  • Retroflexed endoscopy of the nasopharynx
  • Sedated oral examination
  • Thoracic radiographs
  • Upper gastrointestinal flexible endoscopy

Behandlingsmetoder

Glucocorticoids· Line 1

Behandling må foreskrives av autorisert veterinær. Spesifikke doser vises bevisst ikke.

Vanlige spørsmål

What is Brachycephalic Obstructive Airway Syndrome?

Brachycephalic Obstructive Airway Syndrome (BOAS) is a common, inherited condition affecting flat-faced pets. It occurs when compressed facial anatomy restricts airflow, causing severe breathing difficulties, heat intolerance, and digestive issues. Early surgical intervention is highly effective at restoring normal breathing and preventing life-threatening airway collapse.

What are the symptoms of Brachycephalic Obstructive Airway Syndrome?

increased inspiratory efforts、Gagging、Excessive drooling、Bringing up undigested food、Stertor、Stertorous breathing、Vomiting (throwing up)、Tiring easily during activity

How is Brachycephalic Obstructive Airway Syndrome diagnosed?

Blood gas analysis、Bronchoscopy、Fluoroscopy、Laryngoscopy、Retroflexed endoscopy of the nasopharynx、Sedated oral examination

How is Brachycephalic Obstructive Airway Syndrome treated?

Behandling må foreskrives av autorisert veterinær. Spesifikke doser vises bevisst ikke.

Kilder

  1. Current Techniques in Small Animal Surgery, 5th Edition (VetBooks.ir) · p. 404
  2. Small Animal Critical Care Medicine, 2nd Edition (VetBooks.ir) · p. 117
  3. Internal Medicine 5th · p. 289
  4. Current Techniques in Small Animal Surgery, 5th Edition (VetBooks.ir) · p. 404
  5. Internal Medicine 5th · p. 289
  6. Small Animal Critical Care Medicine, 2nd Edition (VetBooks.ir) · p. 127

Artikkelen er generell opplæring og erstatter ikke veterinærråd. Hvis dyret er sykt, kontakt veterinær.

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