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Amlodipine, sold under the brand name Norvasc among others, is a calcium channel blocker medication used to treat high blood pressure, coronary artery disease (CAD) [10] and variant angina (also called Prinzmetal angina or coronary artery vasospasm, among other names). [11] It is taken orally (swallowed by mouth). [10]
[4] [23] However, individuals exhibiting angina symptoms that are associated with depressions in their electrocardiogram ST segments, that are triggered by exertion, and/or who have atherosclerotic coronary artery disease are still considered to have variant angina if their symptoms are caused by coronary artery spasms.
This can help ameliorate symptoms of ischaemic heart disease such as angina pectoris. Immunohistochemical analysis of L-type calcium channel Cav1.3 (CACNA1D) in human adrenal cortex: Marked immunoreactivity was detected in the zona glomerulosa. In the figure: ZG = zona glomerulosa, ZF = zona fasciculata, AC = adrenal capsule.
Coronary vasospasm refers to when a coronary artery suddenly undergoes either complete or sub-total temporary occlusion. [ 1 ] In 1959, Prinzmetal et al. described a type of chest pain resulting from coronary vasospasm, referring to it as a variant form of classical angina pectoris . [ 2 ]
The primary factor differentiating unstable angina from stable angina (other than symptoms) is the underlying pathophysiology of the atherosclerosis. The pathophysiology of unstable angina is the reduction of coronary blood flow due to transient platelet aggregation on apparently normal endothelium, coronary artery spasms, or coronary thrombosis.
Coronary perfusion pressures are decreased by these factors, which also increase myocardial oxygen consumption, possibly leading to left ventricular hypertrophy. As the left ventricle becomes unable to compensate for an acute rise in systemic vascular resistance, left ventricular failure and pulmonary edema or myocardial ischemia may occur.
Sneddon's syndrome is a progressive, noninflammatory arteriopathy leading to the characteristic skin condition and to cerebrovascular problems, including stroke, transient ischemic attack (TIA), severe but transient neurological symptoms thought to be caused by cerebral vasospasm, coronary disease and early-onset dementia.
Thus they are commonly present in many people's homes. In young children one pill may cause serious health problems and potentially death. [8] The calcium channel blocker that caused the greatest number of deaths in 2010 in the United States was verapamil. [2] This agent is believed to cause more heart problems than many of the others. [2]
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