I actually had the same thing happen to me. I just found out I had a metal clip in me and those are the same things am going through.
pisces, it seems unlikely that the clamp is causing these problems.
What are they doing to increase her potassium? That deficiency alone can cause all the symptoms she is experiencing, and in fact, that could kill her.
Until they get her potassium within normal range, the clamp probably should be secondary.
Also, she needs a better doctor. Going to the ER is no way to get comprehensive treatment - does she have a primary care doctor?
Link to potassium deficiency symptoms:
(note, hair loss is not listed here but if you google low potassium hair loss, you'll find it is a symptom)
http://www.nutritional-supplement-educational-centre.com/symptoms-of-low-potassium.html
Best wishes. I had a coworker who very nearly died and it was like a lightbulb going off when they discovered she was very low potassium, which in her was easily treated.
she needs to demand that they remove the clamp. if thats really whats causing all the problems she needs it to be removed. Why if she has told the drs are they jus allowing for the clamp to remain inside ? they should do an ultra sound or mri to see if the clamp "dissolved" the way it was supposed to. maybe thats why they are not listening to her cause they think it is supposed to already be gone. no matter what though i would insist on the physician helping if that dr is refusing she needs to see another dr.