Antihypertensive Selection for Initial Therapy

Age-Based Selection Algorithm

The American College of Cardiology recommends starting with an ACEI or ARB as first-line therapy for patients under 55 years old, as these agents provide superior cardiovascular protection in younger patients with higher renin activity 1, 3
For patients 55 years old or older, or black patients of any age, the American Heart Association suggests starting with a CCB or thiazide-like diuretic, as these patients typically have lower renin activity, making CCBs and diuretics more effective 1, 3

The American Diabetes Association recommends initiating therapy with an ACEI or ARB regardless of age for patients with diabetes mellitus, and for those with blood pressure 130-160/80-100 mmHg, starting with a single agent 2, 4
For patients with coronary artery disease, the American College of Cardiology recommends ACEI or ARB as first-line therapy, as these agents provide superior cardiovascular protection in established coronary disease 4

The European Society of Cardiology suggests starting at the standard initial dose and titrating to the maximum recommended dose before adding a second agent, and reassessing blood pressure every 2-4 weeks until control is achieved 1, 3
For patients with blood pressure ≥160/100 mmHg, the American Heart Association recommends initiating two agents simultaneously to achieve faster blood pressure control, with preferred combinations including thiazide + ACEI or ARB, CCB + ACEI or ARB, or CCB + thiazide 1, 2, 3, 4

The American College of Cardiology advises against combining ACEI + ARB, as this increases the risk of hyperkalemia, syncope, and acute kidney injury without added cardiovascular benefit 2, 4

The American Diabetes Association recommends a target blood pressure of <130/80 mmHg for adults with diabetes 2, 4
The American College of Cardiology suggests a target systolic blood pressure of <130 mmHg for adults 65 years and older 4

The European Society of Cardiology advises against using beta-blockers as first-line therapy unless a specific indication exists, as they have not shown mortality benefit for hypertension alone 4
The American Heart Association recommends avoiding hydrochlorothiazide when thiazide-like diuretics are available, as the latter have superior cardiovascular outcomes 2