Nonselective and Selective Beta Blockers Flashcards
What is a beta blocker?
A medication that blocks the effects of epinephrine on beta-adrenergic receptors.
What are the two main types of beta blockers?
Nonselective and selective beta blockers.
Which beta blockers affect both beta-1 and beta-2 receptors?
Nonselective beta blockers.
Which beta blockers primarily affect beta-1 receptors?
Selective beta blockers.
Name one example of a nonselective beta blocker.
Propranolol.
Name one example of a selective beta blocker.
Atenolol.
What is the primary action of beta blockers?
To reduce heart rate and myocardial contractility.
True or False: Nonselective beta blockers can cause bronchoconstriction.
True.
Fill in the blank: Selective beta blockers are often preferred in patients with ________ conditions.
Respiratory.
What is one common use of beta blockers?
Management of hypertension.
Name an off-label use for propranolol.
Performance anxiety.
Which selective beta blocker is commonly used for migraine prophylaxis?
Propranolol.
True or False: All beta blockers are equally effective in treating heart failure.
False.
What is the mechanism of action for beta blockers?
They block the binding of norepinephrine and epinephrine to beta receptors.
Name a condition for which selective beta blockers are commonly prescribed.
Arrhythmias.
Fill in the blank: Nonselective beta blockers can lead to ________ in patients with asthma.
Bronchospasm.
What is the difference between selective and nonselective beta blockers in terms of receptor affinity?
Selective beta blockers primarily target beta-1 receptors, while nonselective beta blockers target both beta-1 and beta-2 receptors.
Which beta blocker would be preferred in a patient with a history of COPD?
A selective beta blocker like metoprolol.
True or False: Beta blockers can mask the symptoms of hypoglycemia.
True.
What is one potential side effect of beta blockers?
Fatigue.
Fill in the blank: Beta blockers are contraindicated in patients with ________ heart block.
Second or third degree.
Name a nonselective beta blocker that is also used to treat hypertension.
Nadolol.
What is an off-label use for atenolol?
Anxiety disorders.
True or False: Beta blockers can be used in the management of tachycardia.
True.
Which beta blocker is often used in the treatment of heart failure?
Carvedilol.
What is one reason a doctor might prescribe a selective beta blocker over a nonselective one?
To avoid bronchial side effects in asthmatic patients.
Fill in the blank: The primary effect of beta blockers in the cardiovascular system is ________.
Decreased cardiac output.
