Beta-Blockers for Fast Heart Rates
How It Works
Beta-blockers help slow the heart rate by blocking the effect of the hormone adrenaline. This reduces the number of electrical impulses that pass through the atrioventricular (AV) node to the lower heart chambers (ventricles).
Why It Is Used
How Well It Works
Beta-blockers are very effective at slowing the heart rate.1 Some of the medicines have also been shown to be helpful for people with coronary artery disease or heart failure.
Side effects of beta-blockers include:
See Drug Reference for a full list of side effects. (Drug Reference is not available in all systems.)
What To Think About
Beta-blockers can sometimes slow down the heart rate too much. Close monitoring during treatment is important, although most people do not have serious side effects from this medicine.
Some of these medicines may make symptoms worse in people who have asthma, chronic obstructive pulmonary disease (COPD), or heart failure with a lot of excess fluid build-up.
eMedicineHealth Medical Reference from Healthwise
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