Ad
related to: dhp vs non calcium channel blocker
Search results
Results from the WOW.Com Content Network
Compared with certain other L-type calcium channel blockers (for example those of the phenylalkylamine class such as verapamil) that have significant action at the heart, the dihydropyridine calcium channel blockers lower blood pressure mainly by relaxing the smooth muscle of the blood vessel walls. [3]
Dihydropyridine (DHP) calcium channel blockers are derived from the molecule dihydropyridine and often used to reduce systemic vascular resistance and arterial pressure. Sometimes when they are used to treat angina , the vasodilation and hypotension can lead to reflex tachycardia , which can be detrimental for patients with ischemic symptoms ...
1,4-Dihydropyridine (DHP) is an organic compound with the formula CH 2 (CH=CH) 2 NH. The parent compound is uncommon, [ 2 ] but derivatives of 1,4-dihydropyridine are important commercially and biologically.
An L-type calcium channel with its subunits labeled along with some drugs known to inhibit the channel. The L-type calcium channel (also known as the dihydropyridine channel, or DHP channel) is part of the high-voltage activated family of voltage-dependent calcium channel. [2] "L" stands for long-lasting referring to the length of activation.
Calcium channel blockers (CCBs) preferentially block the L-type voltage-gated calcium channels to prevent the flow of calcium influx in the blood vessels and the heart, thereby reducing peripheral vascular resistance and cardiac output respectively. [10] Dihydropyridines (DHP): amlodipine, nifedipine, felodipine, nicardipine
Class IV agents are slow non-dihydropyridine calcium channel blockers. They decrease conduction through the AV node , and shorten phase two (the plateau) of the cardiac action potential . They thus reduce the contractility of the heart, so may be inappropriate in heart failure.
These blockers act as ion channel antagonists, preventing the response that is normally provided by the opening of the channel. Ion channels permit the selective passage of ions through cell membranes by utilizing proteins that function as pores, which allow for the passage of electrical charge in and out of the cell. [ 1 ]
Diltiazem, sold under the brand name Cardizem among others, is a nondihydropyridine calcium channel blocker medication used to treat high blood pressure, angina, and certain heart arrhythmias. [9] It may also be used in hyperthyroidism if beta blockers cannot be used. [9] It is taken by mouth or given by injection into a vein. [9]
Ad
related to: dhp vs non calcium channel blocker