Would you stop an ACE inhibitor/ARB or instead initiate a potassium binder to manage hyperkalemia in a patient with proteinuric CKD stage 5 who is on an ACEi/ARB?  

This depends on where in CKD 5 the patient is, to some extent. Would also make sure to modify diet if possible and make sure on an appropriate dose of a loop diuretic. If very close to starting dialysis or getting a txp, I might reduce dose or stop, especially if a K-binder is expensive for the pati...

ACE-I’s and ARB’s have been shown to slow the progression of CKD, especially in patients with proteinuria. If potassium elevation is considered to be a problem, potassium binders are an excellent treatment to prevent high potassium levels and continue patients on drugs that act on the RA...