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== Introduction ==

== Introduction ==

==Signalment==

==Signalment==

Some diseases predispose animals to secondary pulmonary hypertension. Predisposed breeds include brachycephalic dogs (chronic obstructive pulmonary disease); small breeds ([[Mitral Valve Dysplasia|mitral endocardiosis]]) and West Highland White Terriers (pulmonary fibrosis).  

Some diseases predispose animals to secondary pulmonary hypertension. Predisposed breeds include brachycephalic dogs (chronic obstructive pulmonary disease); small breeds ([[Degenerative Mitral Valve Disease|mitral endocardiosis]]) and West Highland White Terriers (pulmonary fibrosis).

 

== Clinical Signs ==

== Clinical Signs ==

:Complete Blood Count will show an eosinophilia if ther is parasitic involvement. (Serology or Fecal Baermann tests would confirm parasitic involvement).  

:Complete Blood Count will show an eosinophilia if ther is parasitic involvement. (Serology or Fecal Baermann tests would confirm parasitic involvement).  

:Biochemistry would show hyperglobulinemia in chronic inflammation.

:Biochemistry would show hyperglobulinemia in chronic inflammation.

'''Urinalysis''' may show the presence of proteinuria if systemic disease is present.  

'''Urinalysis''' may show the presence of proteinuria if systemic disease is present.  

'''Radiography''' is best performed with a DV view. Signs will include left atrial and ventricular enlargement, pulmonary arterial enlargement, congested pulmonary veins and signs of pulmonary disease.

'''Radiography''' is best performed with a DV view. Signs will include right atrial and ventricular enlargement, pulmonary arteries enlargement, enlargement of the V. cava caudalis, congested pulmonary veins and signs of pulmonary disease.  

'''Electrocardiography''' may show the presence of right ventricular hypertrophy (deep S-waves) and signs of myocardial hypoxia (ST segment abnormalities).

'''Electrocardiography''' may show the presence of right ventricular hypertrophy (deep S-waves) and signs of myocardial hypoxia (ST segment abnormalities).

'''Echocardiography''' may be used to calculate pulmonary arterial pressures. It may also show enlargement of the right-side of the heart and enable visualisation of mitral or tricuspid regurgitation.

'''Echocardiography''' may be used to calculate pulmonary arterial pressures. It may also show enlargement of the right-side of the heart and enable visualisation of mitral or tricuspid regurgitation.<gallery caption="[[File:Enlarged pulmonary artery.jpg|thumb|354x354px|Enlarged pulmonary artery]]">

 

== Treatment ==

== Treatment ==

Depends on the disease condition causing pulmonary hypertension and the ability to control it. Prognosis is poor when pulmonary drainage is irreversible.

Depends on the disease condition causing pulmonary hypertension and the ability to control it. Prognosis is poor when pulmonary drainage is irreversible.

[[Category:Lungs_-_Circulatory_Pathology]] [[Category:Vascular_Diseases_-_Dog]] [[Category:Vascular_Diseases_-_Cat]] [[Category:Arterial_Pathology]] [[Category:Expert_Review]]

[[Category:Lungs_-_Circulatory_Pathology]] [[Category:Vascular_Diseases_-_Dog]] [[Category:Vascular_Diseases_-_Cat]] [[Category:Arterial_Pathology]] [[Category:Expert_Review]]