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Beta blocker. Skeletal formula of propranolol, the first clinically successful beta blocker. Beta blockers, also spelled β-blockers, are a class of medications that are predominantly used to manage abnormal heart rhythms (arrhythmia), and to protect the heart from a second heart attack after a first heart attack (secondary prevention). [1]
Frequency. 0.2% [1] Wolff–Parkinson–White syndrome (WPWS) is a disorder due to a specific type of problem with the electrical system of the heart involving an accessory pathway able to conduct electrical current between the atria and the ventricles, thus bypassing the atrioventricular node. [2][3] About 60% of people with the electrical ...
For people who cannot tolerate beta blockers, nondihydropyridine calcium channel blockers such as verapamil can be used, but are potentially harmful in people who also have low blood pressure or severe shortness of breath at rest. These medications also decrease the heart rate, though their use in people with severe outflow obstruction ...
Carvedilol. Carvedilol, sold under the brand name Coreg among others, is a beta blocker medication, that may be prescribed for the treatment of high blood pressure (hypertension) and chronic heart failure with reduced ejection fraction (also known as HFrEF or systolic heart failure). [1][2] Beta-blockers as a collective medication class are not ...
See media help. Arrhythmias, also known as cardiac arrhythmias, are irregularities in the heartbeat, including when it is too fast or too slow. [2] A resting heart rate that is too fast – above 100 beats per minute in adults – is called tachycardia, and a resting heart rate that is too slow – below 60 beats per minute – is called ...
Beta-blockers, which slow down the heart and reduce the force of its contractions. Ace Inhibitors, which block the formation of Angiotensin II, a chemical that causes blood vessels to constrict ...
A beta-blockers act to suppress ectopic foci by reducing sympathetic stimulation and decreasing conduction through the atrioventricular node, thereby slowing the ventricular response. Studies have found an average decrease in heart rate of 51 beats per minute and 79% of patients reverted to sinus rhythm. Most patients did not need beta-blocker ...
diazepam, benzodiazepines, beta blockers, anti-hypertensives. An adrenergic storm is a sudden and dramatic increase in serum levels of the catecholamines adrenaline and noradrenaline (also known as epinephrine and norepinephrine respectively), with a less significant increase in dopamine transmission. It is a life-threatening condition because ...