I am finally catching up on old FMLs. BIG, I could not get her address to work and this may be something she needs for health reasons. THANKS so much!!!!! There are safe irregularities, and unsafe ones. Your vet should be able to tell the difference. We are not vets but DO have a ferret with cardiomyopathy and ventricular bigemini (sometimes trigemini): Meltdown. Her disturbance IS a dangerous one but for over 6 months has been well controlled by twice daily Digoxin (0.05 mg/ mL) at 0.20 mL , and 1/8 of a tablet of Enacard given once a day. (Now that she is stage four she also has Lasix.) Ask your vet what TYPE of irregularity it is because cardiomyopathy is fatal but can be greatly slowed with medication, stress-reduction and luck. Most likely you are NOT looking at a serious form since I have NEVER heard of a vet taking cardiomyopathy lightly, but it pays to be sure. Beisdes, you will feel relieved (or learn something important). Serious heart problems sound very different from non-serious, I gather. (In bad cases you also get an x-ray and usually an ultrasound.) Hope this helps. BTW, Propranolol with Enacard also helped, but not as much. Meltdown is the first ferret treated for this condition so it will be useful for you to pass this note on to your vet. Sukie [Posted in FML issue 1719]