I can't claim to be an expert, but I did a bit of poking around on the Internet.
Don't panic, but do act quickly in getting him his heart check-up.
Irregular heartbeat is not necessarily a crisis. Remember that Ben was
probably a bit stressed at going to the vet, especially after moving into a
new home. There's a nice webpage here:
http://www.burnhamparkvet.com/showpracfaq....D=170&Private=0However, you'll want to act on the chance that there is something wrong, and
get the check-up as soon as possible. Try to keep Ben relaxed: avoid stressful
situations, and if he's an indoor/outdoor cat you might want to keep him in.
Heart disease in cats is often undetected, and onset of problems can be rapid.
However, a lot of conditions seem to be treatable through medication or surgery.
He doesn't have any other problems that you've noticed, right? I remember your
posts about him, and by your description he seemed quite healthy. Catching a heart
problem before any other symptoms appear (difficulty breathing, weakness, etc.)
can make a lot of difference.
Hypertrophic cardiomyopathy (HCM) appears to be the most common form of heart
disease in cats, but that isn't necessarily what Ben has. The condition is
genetic. There's a friendly web page here:
http://www.portlandvetspecialists.com/libr...rtdisease4.htmlOn Feline hypertrophic cardiomyopathy:
http://members.aol.com/jchinitz/hcm/Here's a narrative page:
http://www.findarticles.com/p/articles/mi_...132/ai_57797573Here are some general tips on heart health:
http://petcaretips.net/feline_heart_disease.htmlAnother HCM page
http://www.cpvh.com/Articles/75.htmlFinally, there's an online "Ask a Vet" service here, for $9.95 a question.
If you're looking for information or reassurance before Ben's check-up,
you might be able to get it here.
Remember, even if Ben is sick, I think you've caught the problem before clinical
symptoms had a chance to set in. By discovering it so soon and having it looked
into, you're giving him his best chance at a long and happy life. Good luck!
-Sarah