VASODILATOR DRUGS Meaning and
Definition
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Vasodilator drugs refer to a class of medications that are used to dilate or widen the blood vessels in the body. These drugs primarily work by relaxing the smooth muscles in the walls of the blood vessels, thereby facilitating increased blood flow through the vessels.
Vasodilator drugs are commonly prescribed to treat various cardiovascular conditions, including hypertension (high blood pressure). By widening the blood vessels, these medications reduce the resistance to blood flow, thus helping to lower blood pressure.
Furthermore, vasodilators can also be utilized to relieve symptoms associated with angina (chest pain caused by inadequate blood flow to the heart) and heart failure. By enlarging the coronary arteries, which supply blood to the heart muscle, vasodilators enhance blood flow to the heart, thereby improving its function and reducing symptoms.
Some examples of commonly used vasodilator drugs include nitroglycerin, hydralazine, nitrates, calcium channel blockers, and angiotensin-converting enzyme (ACE) inhibitors. These drugs may be administered orally, as sublingual tablets, or via intravenous injection, depending on the specific condition being treated and the severity of symptoms.
However, as with any medication, vasodilators can have side effects. These may include headaches, flushing, hypotension (low blood pressure), dizziness, and swelling. It is important for individuals taking these drugs to consult with a healthcare professional and adhere to proper dosing guidelines to minimize the risk of adverse effects.
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Etymology of VASODILATOR DRUGS
The word "vasodilator" is derived from two Latin roots: "vaso", meaning vessel, and "dilator", meaning to widen or expand. In Latin, "vaso" refers specifically to blood vessels. Therefore, "vasodilator" literally means a substance or drug that expands or widens blood vessels. The term "drugs" is added to specify that it is a medication or compound used for therapeutic purposes.
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