Final answer:
Beta-blockers are the preferred medication class for rate control in atrial fibrillation. They block the ß-receptors associated with vasoconstriction and cardioacceleration which improves cardiac function. Overprescription may lead to bradycardia or even stop the heart.
Step-by-step explanation:
The preferred class of medication for rate control in atrial fibrillation is a) Beta blockers.
Mid-line sympatholytic drugs such as Beta-blockers often treat cardiovascular diseases because they block the ß-receptors associated with vasoconstriction and cardioacceleration. Letting the blood vessels dilate, or stopping the heart rate from increasing, these medications can enhance cardiac function in a fragile system, like for people with congestive heart failure or those who previously endured a heart attack. Metoprolol and propanolol are common types of Beta-blockers. Metoprolol specifically blocks the B₁-receptor, and propanolol non-specifically blocks B-receptors. Other medications working in a similar way are known as alpha-blockers.
Certain cardiac medications such as beta blockers operate by blocking these receptors, thereby slowing down Heart Rate and are a potential treatment for hypertension. Overprescription of these medicines may lead to bradycardia or even halt the heart.
Learn more about Beta-blockers