Pericardial diseases are not as common as valvular, myocardial or congenital heart diseases, but are encountered reasonably frequently in practice and they are probably one of the more common causes of right-sided congestive heart failure in dogs. However, pericardial disease is rare in the cat.
The pericardium envelops the heart and proximal portions of the great vessels, and it consists of two membranes: a thin visceral pericardium (epicardium) adherent to the myocardium, and a thicker parietal pericardium (pericardial sac). Between these two membranes is the pericardial space containing 1-15 ml of a serous fluid.



   PERICARDIAL EFFUSION
  CONSTRICTIVE PERICARDITIS
  CONGENITAL DISORDERS OF THE PERICARDIUM

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