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Amlodipine works partly by vasodilation (relaxing the arteries and increasing their diameter). [10] It is a long-acting calcium channel blocker of the dihydropyridine type. [10] Amlodipine was patented in 1982, and approved for medical use in 1990. [12] It is on the World Health Organization's List of Essential Medicines. [13]
"Palpitations are typically benign, but the risks are based on the underlying cause of the palpitations," says Dr. Bradley Serwer, MD, a cardiologist and the chief medical officer at VitalSolution.
Long QT syndrome (LQTS) is a condition affecting repolarization (relaxing) of the heart after a heartbeat, giving rise to an abnormally lengthy QT interval. [7] It results in an increased risk of an irregular heartbeat which can result in fainting, drowning, seizures, or sudden death. [1]
A number of drugs that cause QT prolongation does not directly block hERG, but reduces the trafficking of the mature protein to the surface of the cell. This includes probucol , which appears to enhance the intercellular degradation of hERG; and several cardiac glycosides , which reduces trafficking due to decreased intracellular potassium.
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]
Other causes of angina include abnormal heart rhythms, heart failure and, less commonly, anemia. [4] The term derives from Latin angere 'to strangle' and pectus 'chest', and can therefore be translated as "a strangling feeling in the chest". An urgent medical assessment is suggested to rule out serious medical conditions. [5]
As maintenance therapy, sublingual nitroglycerin tablets can be taken 3-5 min before conducting activity that causes angina by the small percentage of patients who experience angina infrequently and only when doing such activity. [17] For most affected individuals, antianginals are used as maintenance therapy to avoid attacks of variant angina.
Other common causes of hypertensive crises are autonomic hyperactivity such as pheochromocytoma, collagen-vascular diseases, drug use particularly stimulants, cocaine and amphetamines and their substituted analogues, monoamine oxidase inhibitors or food-drug interactions, spinal cord disorders, glomerulonephritis, head trauma, neoplasias ...