REN and chronic kidney disease: The most common antihypertensive drugs prescribed to patients with CKD were renin–angiotensin–aldosterone system (RAAS) blockers (comprising angiotensin converting enzyme [ACE] inhibitors 33.8% and angiotensin receptor blockers [ARBs] 14.2%), followed by diuretics (40.2%) and beta-blockers (36.7%).