Management of Severe Hypertension

Initial Assessment and Treatment

The European Society of Cardiology recommends that patients with severe hypertension undergo urgent evaluation for hypertensive emergency and immediate blood pressure reduction, with assessment for target organ damage and consideration of intravenous therapy if a hypertensive emergency is present 1, 2, 3
If target organ damage is present, the American Heart Association recommends ICU admission and intravenous antihypertensive therapy with continuous blood pressure monitoring, with first-line IV agents including labetalol or nicardipine for most hypertensive emergencies 1, 2, 3
Blood pressure should be reduced by no more than 25% within the first hour, then cautiously to 160/100 mmHg over 2-6 hours if stable, according to the American Heart Association 3

The European Society of Cardiology recommends adding a thiazide or thiazide-like diuretic as the second agent to the existing amlodipine 10 mg daily 4
Chlorthalidone 12.5-25 mg once daily is preferred over hydrochlorothiazide due to superior 24-hour blood pressure reduction and proven cardiovascular outcome benefits, according to the European Society of Cardiology 5

The European Society of Cardiology recommends that the third agent should complete the triple therapy regimen: CCB + RAS blocker (ACE inhibitor or ARB) + thiazide diuretic, which represents one of the most effective three-drug combinations for resistant hypertension 4, 5
Verify medication adherence before escalating therapy, as non-adherence is the most common cause of apparent treatment resistance, according to the European Society of Cardiology 5

Reassess blood pressure in 2-4 weeks after medication adjustment, and monitor electrolytes and renal function when initiating or adjusting diuretic therapy, according to the European Society of Cardiology 5
Target blood pressure is <130/80 mmHg for most patients with hypertension, according to the European Society of Cardiology 5