You went to the ER, because you were not aware that cramps, constipation, spiking BP, and muscle weakness are symptoms of hypokalemia, which could be resolved quickly by dissolving KCl from the grocery store in water and drinking it.
That's patient education that needs to happen before you go to the ER.
Just like with the GlacialMD thing, it's no skin off your doc's nose if you have to drop $500-$2000 on an ER copay because you had an electrolyte crisis from the medication she prescribed, and didn't know ahead of time that could be a possibility.
And the rest of you out there, learn to measure your own BP. You can't leave it to an annual exam to find out it's getting high, and the BP taken in the doc's office may include the "white coat effect" (or as I call it, the "what will this cost me effect").