We're also going to be tested for this!!
For a year now, the specialists has been saying they think my son might have a mitochondrial disease. But we've been sent from one doctor to the next, everyone ending in the "you need to see the mitochondrial specialist". But, the mitochondrial specialist in our small country, is so fully booked neither me nor the doctors could get my son an appointment!!
So the cardiologist has now put my son on carnitine (sp??) and q10. She said if he improves, she's going to try and work with the mitochondrial specialist, but doing the muscle biopsy herself. Because improvement on the medication will comfirm her hunch, that there's reason to believe he has a mitochondrial disease. Unfortunately, we'll have to take him off the medications for a couple of months before she can do the muscle biopsy. So at the earliest, we're probably looking at around March/April to do the biopsy.
So unfortunately I can't help you on what to expect, but I'd love to learn from your experience, if you don't mind? What did the biopsy entail? How long are they in hospital? Is it very painful?
And what's your son's symptoms? I guess it's your youngest son that's been diagnosed? Do they know what caused it? There's speculation that in our case it's inherited, because 3 of my children have different special needs. My son's biggest problem currently, is that his heartwall is thin (precursor to dilated cardiomyopathy) and he has been physically tired ALL of his life. Since he was about 4 months old, I've noticed it. As if his body just can't sustain his energy needs unless he rests inbetween.