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| − | ===Pulmonic Stenosis=== | + | ===[[Pulmonic Stenosis]]=== |
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| − | Obstructs blood flowing form the right ventricle to the pulmonary artery. As with aortic stenosis may be subvalvular, valvular or supravalvular. Valvular stenosis is the most common form in the dog.
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| − | ''Incidence:''
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| − | *Increased incidence in English bulldogs, Cocker spaniels, Chihuahuas.
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| − | *Autosomal dominant in Beagles.
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| − | ''Clinical Signs:''
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| − | *Asymptomatic if mild or moderate.
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| − | *If severe; exercise intolerance, stunting, syncope, right sided heart failure E.g. ascites.
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| − | *Harsh systolic murmur at left heart base.
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| − | *May hear splitting of the second heart sound due to delayed closure of the pulmonic valve.
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| − | *Femoral pulse quality good but jugulars distended.
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| − | ''Diagnosis:''
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| − | *Right ventricular enlargement on radiology, along with post-stenotic dilatation of the pulmonary artery and pulmonary undercirculation.
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| − | *Abnormal valve can be imaged using echocardiography.
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| − | *Severity of stenosis can be assessed using Doppler to calculate flow rates.
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| − | ''Treatment:''
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| − | *Balloon valvuloplasty is treatment of choice.
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| | ===Mitral Dysplasia=== | | ===Mitral Dysplasia=== |