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Tricuspid Valve Dysplasia (view source)
Revision as of 13:33, 5 September 2008
, 13:33, 5 September 2008New page: {{toplink |backcolour = |linkpage =Cardiology - WikiClinical |linktext =Cardiology |sublink1=Cardiovascular Conditions - WikiClinical |subtext1=CARDIOVASCULAR CONDITIONS |maplink1= Cardiov...
{{toplink
|backcolour =
|linkpage =Cardiology - WikiClinical
|linktext =Cardiology
|sublink1=Cardiovascular Conditions - WikiClinical
|subtext1=CARDIOVASCULAR CONDITIONS
|maplink1= Cardiovascular Conditions (Content Map) - WikiClinical
|pagetype=Clinical
}}
<br>
*Common in dogs & cats
*Rare in large animals
*Horses do get tricuspid atresia
===Signalment===
Genetics & Predisposed Breeds: Labrador Retrievers, German Shepherds, Boxers, Great Danes
===Description===
*Congenital malformation of the tricuspid valve (right atrioventricular valve) and its supporting structures (chordae tendineae, papillary muscles, valvular leaflets) results in tricuspid stenosis (narrowing) or regurgitation (insufficiency)
*Tricuspid valve dysplasia leads to increased volume load on the right atrium and ventricle towards the end of diastole.
*A stenotic tricuspid valve can limit ventricular filling during diastole.
*Increased pressure as a result of increased volume can cause right-sided congestive heart failure.
===Diagnosis===
====History & Clinical Signs====
-Exercise intolerance
-Dyspnea
-Weight Loss
-Poor appetite
-Abdominal distension
====Physical Exam====
-Right-sided soft systolic murmur (tricuspid regurgitation)
-Right-sided diastolic murmur
-Jugular pulses & distension (severe case)
-Femoral pulses are normal to weak
-Signs of right-sided congestive heart failure (severe case)
====Radiographic Findings====
-Right atrial and right ventricular enlargement
-Caudal vena cava enlargement
-Pulmonary underperfusion
-Signs of right sided heart failure
====Echocardiographic Findings====
-Right ventricular and atrial dilation
-Abnormalities of tricuspid valve
Doppler shows tricuspid regurgitation and/or stenosis
====Electrocardiographic (ECG)====
-Classic signs of right atrial and ventricular enlargement
-Atrial arrhythmias
-Ventricular conduction problems
===Treatment===
Palliative Treatment
-Pharmacologically control right sided congestive heart failure
-Pharmacologically control arrhythmias
-Thoracentesis when needed to relieve pleural effusion
-Abdominocentesis when needed to relieve peritoneal effusion
===Prognosis===
'''Mild/Moderate Cases'''
-Normal life
'''Severe Cases'''
-Poor (However, if heart failure is controlled these patients can live several years.)
|backcolour =
|linkpage =Cardiology - WikiClinical
|linktext =Cardiology
|sublink1=Cardiovascular Conditions - WikiClinical
|subtext1=CARDIOVASCULAR CONDITIONS
|maplink1= Cardiovascular Conditions (Content Map) - WikiClinical
|pagetype=Clinical
}}
<br>
*Common in dogs & cats
*Rare in large animals
*Horses do get tricuspid atresia
===Signalment===
Genetics & Predisposed Breeds: Labrador Retrievers, German Shepherds, Boxers, Great Danes
===Description===
*Congenital malformation of the tricuspid valve (right atrioventricular valve) and its supporting structures (chordae tendineae, papillary muscles, valvular leaflets) results in tricuspid stenosis (narrowing) or regurgitation (insufficiency)
*Tricuspid valve dysplasia leads to increased volume load on the right atrium and ventricle towards the end of diastole.
*A stenotic tricuspid valve can limit ventricular filling during diastole.
*Increased pressure as a result of increased volume can cause right-sided congestive heart failure.
===Diagnosis===
====History & Clinical Signs====
-Exercise intolerance
-Dyspnea
-Weight Loss
-Poor appetite
-Abdominal distension
====Physical Exam====
-Right-sided soft systolic murmur (tricuspid regurgitation)
-Right-sided diastolic murmur
-Jugular pulses & distension (severe case)
-Femoral pulses are normal to weak
-Signs of right-sided congestive heart failure (severe case)
====Radiographic Findings====
-Right atrial and right ventricular enlargement
-Caudal vena cava enlargement
-Pulmonary underperfusion
-Signs of right sided heart failure
====Echocardiographic Findings====
-Right ventricular and atrial dilation
-Abnormalities of tricuspid valve
Doppler shows tricuspid regurgitation and/or stenosis
====Electrocardiographic (ECG)====
-Classic signs of right atrial and ventricular enlargement
-Atrial arrhythmias
-Ventricular conduction problems
===Treatment===
Palliative Treatment
-Pharmacologically control right sided congestive heart failure
-Pharmacologically control arrhythmias
-Thoracentesis when needed to relieve pleural effusion
-Abdominocentesis when needed to relieve peritoneal effusion
===Prognosis===
'''Mild/Moderate Cases'''
-Normal life
'''Severe Cases'''
-Poor (However, if heart failure is controlled these patients can live several years.)