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Myopathy Suspected, Biopsy Ordered

Posted Feb 11 2012 12:00am
The title pretty much sums it up. 

On Friday I had my follow-up appointment with the neurologist who specializes in neuromuscular diseases.  My blood work was normal (i.e., no abnormal muscle enzymes), but my EMG had  abnormalities.  The EMG results suggest a possible myopathy, so the doctor wants to do a muscle biopsy to look for metabolic or mitochondrial myopathy. 

Here is the EMG summary
1. Motor and sensory conductions of the right arm and right leg were normal.
2. EMG of the right arm, right leg, and right shoulder and hip girdle muscles showed minimal short duration units in proximal muscles of the leg > arm.  No fibs or positive sharp waves were observed.  EMG of the thoracic paraspinal also showed slightly more short duration units than expected without any abnormal spontaneous activities. 
Comments: Minimal amount of short duration units in proximal muscles of the legs > arms/paraspinal.  These findings are suggestive of possible underlying myopathy.  
I haven't scheduled my biopsy yet, but I plan to call on Monday to get an appointment.  I'll be getting the biopsy on my left arm.  I'm nervous because the doctor said the procedure will be very painful and I won't be able to use my arm to lift anything (including laundry) for two weeks.  Well, at least she's honest.

Update February 12:  I thought I'd explain the results a little better.  It's my understanding that there were abnormalities in all the muscles they tested but my legs and arms were the worst, with my legs showing even more abnormalities than my arms. 
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