Hypokalemia dx, 2.9 @ lowest. gp & pulmonologist seem worried, instruct me to go to er, but er docs don't seem to be too concerned. on 80 meq qd.

Hypokalemia : One of the concerns with hypokalemia at 2.9 is its associated risk for serious and potentially lethal cardiac arrhythmia. If there is no ongoing loss and no underlying cardiac problems, it is less worrisome but risk not abolished. You should listen to your gp and pulmonologist as they know more about your condition than the er does. Likely need nephrology to sort out cause.

Both are correct: Your gp and pulmonologist are worried about your potassium (k+) going down lower than 2.9, and they know you can get aggressive replacement of k+ and quick check to see if you got enough in the er. Er docs are used to treating emergencies not pre-emergencies. They can seem unconcerned but they too know the dangers low k+.Sounds like you are wasting k+ and not yet done getting enough replacement.

Low potassium: You need to be evaluated by a nephrologist (n) to see why you have a low potassium (k) level on 80 meq of k/day. You may have a renal loss of k causing this. It is not the level of k that will hurt you, it is the rapidity that you arrive at a low level of k that will harm you. Ask the doctor that ordered the replacement k to send you a n for a full evaluation of your low k and treatment of it.

Hypokalemia: I specialize in this problem. Lets do second opinion consult to see what is going on.