Management of Hypertensive Urgency

Definition and Appropriate Management

Hypertensive urgency does not require immediate blood pressure reduction with intravenous medications, unlike hypertensive emergencies, according to the American Heart Association 1
Oral antihypertensive agents are preferred for treating hypertensive urgency, allowing for a gradual reduction in blood pressure, as recommended by the American College of Cardiology 1

Nitroglycerin is indicated for acute pulmonary edema with hypertension and acute coronary syndromes with hypertension, as stated by the American College of Cardiology/American Heart Association 1, 2, 3
The American College of Cardiology/American Heart Association guidelines recommend intravenous nitroglycerin (not patches) for specific scenarios, including relieving ischemic pain, acute hypertension with cardiac indications, or managing pulmonary congestion 2, 3

Nitroglycerin patches develop tachyphylaxis (tolerance) rapidly, often within 24 hours, making them less effective for hypertensive urgency, according to the European Society of Cardiology 4
The American Heart Association notes that nitroglycerin patches can cause excessive blood pressure reduction, compromising organ perfusion 2

The American College of Cardiology recommends oral labetalol and oral calcium channel blockers for hypertensive urgency 1
For hypertensive emergencies, the American Heart Association prefers intravenous agents, including nicardipine, labetalol, esmolol, and fenoldopam 1

The European Society of Cardiology recommends a mean arterial pressure reduction of only 20-25% over several hours to avoid organ hypoperfusion and ischemia 5
The American College of Cardiology advises monitoring blood pressure closely during treatment to prevent excessive or rapid blood pressure reduction 4

A 1/2 inch application of nitroglycerin paste typically reduces systolic blood pressure by approximately 15-25 mm Hg, though the response is highly variable and unpredictable 6

The American College of Cardiology/American Heart Association guidelines recommend intravenous nitroglycerin (not topical preparations) when nitroglycerin is indicated for acute hypertension with cardiac complications 6

Nitroglycerin paste (1-2 inches) is recommended for pre-thrombolytic blood pressure reduction when systolic BP is ≥185 mm Hg or diastolic BP is ≥110 mm Hg before rtPA administration 6
Nitroglycerin paste can be used as an alternative to IV nitroglycerin in acute coronary syndromes with hypertension when IV access is problematic 7

Nitroglycerin paste should not be used when systolic blood pressure <90 mm Hg or ≥30 mm Hg below baseline 6, 8
Nitroglycerin paste is contraindicated in patients with heart rate <50 bpm or >100 bpm 8
Nitroglycerin paste should not be used in patients with suspected right ventricular infarction 8, 9
Nitroglycerin paste is contraindicated in patients who have used phosphodiesterase inhibitors within 24-48 hours 7, 8