His heart is segmented in one area by lumps of thickened wall. It appears he also has a blood clot but due to the congestion last night, she couldn't get a very clear reading. No, they are not siblings but this can happen to any cat at any time. Cooper is seven years old, sort of young but in the age range that most cardiac issues are discovered in cats. It could be that it was developing over the summer which is why Cooper began to lose weight. It could be thyroid induced and they are checking his T3 and T4 levels (weight loss is also a sign of thyroid issues.) And it is likely that the stress of the dental surgery as well as the anesthesia was a trigger for further development of the heart disease and CHF.
We brought him home this morning. His congestion is gone. He's on lasix to get rid of extra fluid to prevent CHF. He will be on Plavix and Spironolactone as well. He sees the cardiologist Thursday for a recheck at which time she will probably prescribe Atenolol as well (to lower the heart rate.) We will also find out more about the heart condition. For now, we will monitor his breathing, hopefully get him to eat, and work on the medication schedule and dosing.