Larry Dighera writes:

Another point I find lacking in this discussion of the treatment of
high blood pressure with diuretic drugs is the failure to mention the
necessity to supplement dietary potassium to compensate for that
flushed out through increased urination.

While that may be relevant with the diuretics under discussion here, it should
be noted that diuresis is not synonymous with potassium loss. The opposite is
possible as well.