What could be the cause? Does this mean my nerve has been damaged and I will need surgery? Or is this part of the nerve’s healing process?

A little over 2 weeks ago, I was hospitalized and they did a blood draw (but it was hard for them to find my vein). They also inserted catheters in my arms for rehydration because I lost conscience due to alcohol. Afterwards, I had tinging in my fingers and hands (pins and needles) for about a week. Then my symptoms stopped for about a week, but it’s been a few days now that I have muscle weakness in my hand and fingers (it’s hard for me to move my fingers or to hold a pen, it doesn’t hurt but takes a lot of effort and I just feel weak, like a tickle feeling). The feeling comes and goes in hourly increments for 3 days now.