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Calcium channel blockers (CCB), calcium channel antagonists or calcium antagonists [2] are a group of medications that disrupt the movement of calcium (Ca 2+ ) through calcium channels . [ 3 ] Calcium channel blockers are used as antihypertensive drugs , i.e., as medications to decrease blood pressure in patients with hypertension .
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.
ATC code C08 Calcium channel blockers is a therapeutic subgroup of the Anatomical Therapeutic Chemical Classification System, a system of alphanumeric codes developed by the World Health Organization (WHO) for the classification of drugs and other medical products. [1] [2] [3] Subgroup C08 is part of the anatomical group C Cardiovascular system ...
Age ≥55 or black: CCB ADA 2018 [11] Diabetes Diabetes with CVD risk <140/90 <130/80 ACEI/ARB, thiazide-like diuretic, and/or dihydropyridine CCB ESC / ESH 2018 [12] General age <65 General age ≥65 <130/80 <140/80 Thiazide-type diuretic, ACEI/ARB, and/or CCB CAD: add beta-blocker Resistant hypertension: add spironolactone ACC / AHA 2017 [13 ...
[12] Diltiazem was approved for medical use in the United States in 1982. [9] It is available as a generic medication. [9] In 2022, it was the 100th most commonly prescribed medication in the United States, with more than 6 million prescriptions. [13] [14] An extended release formulation is also available. [5] [6] [9]
The 8th Joint National Committee (JNC-8) recommends calcium channel blockers to be a first-line treatment either as monotherapy or in combination with thiazide-type diuretics, ACEis, or ARBs for all patients regardless of age or race. [7] The ratio of CCBs' anti-proteinuria effect, non-dihydropyridine to dihydropyridine was 30 to −2. [13]
Other side effects include allergic reactions and muscle pains. [12] It is not recommended in people with a slow heart rate or heart failure. [12] It is believed to cause problems for the fetus if used during pregnancy. [2] It is in the non–dihydropyridine calcium channel blocker family of medications. [9]
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