Hypertensive emergency is characterized by a significant increase in blood pressure, often with diastolic pressure greater than 130 mmHg. Target organs including the brain, eyes, heart, and kidneys are severely compromised or fail. Hypertensive emergencies require admission to the CCU for cardiac monitoring and the use of intravenous antihypertensives. In the initial one to two hours, the reduction in blood pressure should not exceed 25% of the peak value. Control blood pressure within two to six hours and stabilize it at 160/100 mmHg. Commonly used antihypertensive drugs include sodium nitroprusside and nitroglycerin, while avoiding the use of nifedipine-like drugs for blood pressure reduction.