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===Signalment===
===Signalment===
-With Treatment: Animals can live up to seven years
-With Treatment: Animals can live up to seven years
==From Pathology==
*'''Pulmonic stenosis'''
*'''Right ventricular hypertrophy'''
*'''High VSD'''
*'''Overriding aorta'''
Commonly reported in certain breeds, E.g Keeshond, Schnauzer, Poodles and terriers.
''Clinical Signs:''
*Cyanotic; see severe exercise intolerance.
*Systolic murmur due to pulmonic stenosis +/- precordial thrill.
*Polycythemia due to chronic hypoxia.
''Diagnosis:''
*Right ventricular enlargement on radiology and ECG.
*Post stenotic dilatation of pulmonary artery on radiology and pulmonary undercirculation due to right to left shunting.
*Echocardiography may show right ventricular hypertrophy, paradoxical motion of interventricular septum (pressure RV>LV), visulaisation of VSD and overriding aorta.
*Doppler useful to image pulmonic stenosis and VSD.
[[Category:Cardiovascular_System_-_Developmental_Pathology]]