My beautiful Amy has been diagnosed (today) with a quite large Atrial Septal Defect and possible Aortic Stenosis. She displayed no symptoms until the start of this week when her abdomen became swollen overnight, and she became a bit lethargic after this. She has been eating and drinking quite normally (in fact seemed to have more of an appetite than usual) and going to the toilet as usual with no vomiting or diarrhoea. The vet spoke to a cardiologist who said that as she has reached the age of 5 1/2 years before showing symptoms that her prognosis 'should be' fair but surely the swelling and fluid in her abdomen mean that she's now in congestive heart failure? The vet wants to keep her in over the weekend so that they can reduce the swelling and keep an eye on her so I won't know any more until Monday, but I just wondered whether anyone else had experience of this particular problem.