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Brachycephalic syndrome is a pathological condition affecting short nosed dogs and cats which leads to severe respiratory distress. There are four different anatomical abnormalities that contribute to the disease, all of which occur more commonly in brachycephalic breeds: an elongated soft palate, stenotic nares, a hypoplastic trachea, and everted laryngeal saccules (a condition which occurs secondarily to the other abnormalities). Because all of these components make it more difficult to breathe, in situations of exercise, stress, or heat, an animal with these abnormalities may be unable to take deep or fast enough breaths to blow off carbon dioxide. This leads to distress and further increases respiratory rate and heart rate, creating a vicious circle that can quickly lead to a life-threatening situation. Dogs experiencing a crisis situation due to brachycephalic syndrome typically benefit from oxygen, cool temperatures, sedatives, and in some cases more advance medical intervention including intubation. == Causes/Risk factor == *Stenotic nares (narrowed nostril) *Elongated soft palate *Hypoplastic trachea (reduced trachea size) *Short/irregular nasal turbinate Muzzle length scales with the risks of BS. Other factors identified includes neck girth and Body Condition Score. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Brachycephalic syndrome」の詳細全文を読む スポンサード リンク
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