Acute Severe Hypertension - part 3

Intravenous labetalol functions primarily as a beta-blocker with a 7:1 ratio, whereas oral formulations operate at a 3:1 ratio, necessitating distinct clinical applications. Beyond patient non-compliance, iatrogenic fluid overload serves as a frequent, often overlooked cause of severe hypertension, requiring volume removal rather than aggressive antihypertensive therapy. While the term "hypertensive urgency" remains contentious, rapid blood pressure reduction risks ischemic complications, including coronary and cerebral ischemia. Hydralazine, despite its 1953 origins and potential for reflex tachycardia, remains a viable option in specific scenarios, such as heart failure in African-American patients or pregnancy, provided heart rates are monitored. Finally, Clevidipine offers rapid-onset blood pressure control but requires caution regarding soy or egg allergies and potential hypertriglyceridemia, as it is formulated as a lipid emulsion.