Hypertensive Emergency and Urgency Management

Definitions and Diagnosis

The American Heart Association defines hypertensive emergency as severe blood pressure elevation (>180/120 mmHg) with evidence of new or worsening target organ damage, requiring immediate BP reduction to prevent further damage 1, 2
The European Society of Cardiology defines hypertensive urgency as severe blood pressure elevation without clinical evidence of acute organ damage, requiring BP reduction but not usually hospital admission 3, 4

The American College of Cardiology recommends admission to an intensive care unit for continuous monitoring and parenteral medication administration in patients with hypertensive emergency 1, 2
The American Heart Association suggests intravenous administration of short-acting, titratable agents, such as nicardipine, clevidipine, sodium nitroprusside, or labetalol, for blood pressure control in hypertensive emergency 1
Blood pressure targets for hypertensive emergency include reducing SBP to <140 mmHg during the first hour, then to <120 mmHg for aortic dissection, and reducing BP by no more than 25% within the first hour for non-compelling conditions 1, 2

The European Society of Cardiology recommends outpatient management with close follow-up and oral antihypertensive medications, such as ACE inhibitors, ARBs, or beta-blockers, for patients with hypertensive urgency 3, 4
The American Heart Association suggests gradual reduction of blood pressure over 24-48 hours to avoid organ hypoperfusion in patients with hypertensive urgency 5, 4

The American College of Cardiology identifies examples of target organ damage, including hypertensive encephalopathy, intracerebral hemorrhage, acute ischemic stroke, acute myocardial infarction, acute left ventricular failure with pulmonary edema, unstable angina pectoris, dissecting aortic aneurysm, acute renal failure, and eclampsia, which indicate hypertensive emergency 1, 2, 3, 4, 5

The American Heart Association notes that patients with chronic hypertension often tolerate higher blood pressure levels than previously normotensive individuals 1, 2
The European Society of Cardiology advises caution with beta-blocker use in patients with hypertension precipitated by sympathomimetics such as methamphetamine or cocaine 3, 4