Final answer:
Fenoldopam is an IV medication used to lower blood pressure in hypertensive emergencies. It works by acting as a vasodilator and increasing glomerular filtration rate, while decreasing sodium reabsorption in the kidneys.
Step-by-step explanation:
Fenoldopam is given IV to lower blood pressure in hypertensive emergencies. It works by acting as a vasodilator and increasing glomerular filtration rate, while decreasing sodium reabsorption in the kidneys. This helps to lower blood pressure and reduce the risk of heart failure.