What is renal vasodilation?

Renal vasodilation and uncoupling of blood flow and filtration rate autoregulation. Renal vasodilation experiments were conducted in dogs to examine the mechanism by which the kidney continues to autoregulate glomerular filtration rate during decreased blood flow autoregulatory efficiency.

How do vasodilators affect renal function?

The effects of “nonspecific” vasodilators on renal perfusion and renal sodium handling vary with the patient but may produce antinatriuresis, sodium retention and decrease in glomerular filtration. Studies with calcium antagonists have shown promising results.

What is an example of a vasodilator?

Examples of pulmonary vasodilators include: Oxygen. Nitric oxide. Nitroprusside (Nipride, Nitropress)

What are three examples of vasodilators?

Types of drugs that are considered vasodilators include medications that are categorized as angiotensin-converting enzyme inhibitors (ACE inhibitors), angiotensin receptor blockers (ARBs), calcium channel blockers (CCBs), and nitrates.

What causes renal vasoconstriction?

Reduction of sympathetic stimulation results in vasodilation and increased blood flow through the kidneys during resting conditions. When the frequency of action potentials increases, the arteriolar smooth muscle constricts (vasoconstriction), resulting in diminished glomerular flow, so less filtration occurs.

When are vasodilators used?

Vasodilators are useful in treating a variety of medical conditions, most commonly systemic hypertension. [1] Other diseases include myocardial infarction (both ST-segment elevation and non-ST-segment elevation), angina, heart failure, stroke, chronic kidney disease, preeclampsia, hypertensive emergency.

Does vasodilation cause hypertension?

The vasodilation causes a decrease in systemic vascular resistance (SVR) and an increase in blood flow, resulting in a reduction of blood pressure.

Does vasoconstriction increase blood pressure?

Vasoconstriction reduces the volume or space inside affected blood vessels. When blood vessel volume is lowered, blood flow is also reduced. At the same time, the resistance or force of blood flow is raised. This causes higher blood pressure.

Can a vasodilator lower blood pressure?

Vasodilators are medications that cause the blood vessels to widen. Doctors may use these drugs to reduce blood pressure and ease any strain on the heart muscle.