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Metoprolol, sold under the brand name Lopressor among others, is a medication used to treat angina, high blood pressure and a number of conditions involving an abnormally fast heart rate. [4] It is also used to prevent further heart problems after myocardial infarction and to prevent headaches in those with migraines . [ 4 ]
(The re-entrant rhythm is less likely to interact with tissue that has become refractory). The class III agents exhibit reverse-use dependence (their potency increases with slower heart rates, and therefore improves maintenance of sinus rhythm). Inhibiting potassium channels results in slowed atrial-ventricular myocyte repolarization.
For instance, heart palpitations can be a red flag for an underlying heart condition. However, even potentially harmless reasons for heart palpitations can have serious consequences.
In adults and children over 15, resting heart rate faster than 100 beats per minute is labeled tachycardia. Tachycardia may result in palpitation; however, tachycardia is not necessarily an arrhythmia. Increased heart rate is a normal response to physical exercise or emotional stress.
Holiday heart syndrome, also known as alcohol-induced atrial arrhythmias, is a syndrome defined by an irregular heartbeat and palpitations [1] associated with high levels of ethanol consumption. [2] Holiday heart syndrome was discovered in 1978 when Philip Ettinger discovered the connection between arrhythmia and alcohol consumption. [ 3 ]
Caffeine doesn't give you heart palpitations, study finds. Danielle Hopkins. Updated July 14, 2016 at 10:46 PM. FDA: Pure Powdered Caffeine Puts Consumers at Risk.
Heart Block; Impaired glucose metabolism; Central Nervous System effects: fatigue, depression, insomnia; Aim to control heart rate to 55-60 beats per minute at rest [17] Used for symptomatic relief An image of metoprolol (Betaloc) Caution. Reduce the dose gradually over 2–3 weeks when withdrawing to avoid ischemia and myocardial infarction ...
heart failure. The cardio-selective beta-1 blockers could cause adverse effects including bradycardia, reduced exercise ability, hypotension, atrioventricular nodal blockage and heart failure. [5] Other possible adverse effects include nausea and vomiting, abdominal discomfort, dizziness, weakness, headache, fatigue, and dryness in mouth and ...