antiarrhythmias class II: beta blockers Flashcards
Propranolol is a non-selective ____ adrenergic blocker. It has a local anaesthetic effect.
beta
Metoprolol is a beta ___ selective adrenergic blocker.
1
_______________ are a type of drug (other than primidone) that can be given to treat essential tremors.
Beta-blockers
Metoprolol is a class ___ antiarrhythmic.
II
Which drug from class II antiarrhythmicsis particularly effective for treating supraventricular tachycardias?
Metoprolol
Metoprolol (increases/ decreases) AV conduction velocity and is thus useful for managing supraventricular tachycardia.
decreases
It is also used in post-myocardial infarction.
How do beta-blockers influence renin secretion?
decrease
Which beta blocker commonly cuases dysplipidemia?
metoprolol
What is the treatment for beta-blocker induced hypoglycemia?
glucagon
** Beta-blockers can cause endocrinologic adverse effects like changes in blood glucose levels.
**Beta-blockers reduce HR, decrease cardiac contractility and BP.
What is the common suffix for beta-blockers?
-olol
Some beta-blockers treat hypertension partly via the inhibition of renin release via _________ adrenergic receptor blocking in the kidneys.
beta -1
Beta-blockers are contraindicated in patients that have a PR interval longer than ______ seconds.
0.24
How do beta-blockers change the PR interval?
elongation
Metoprolol acts on cardiac (myocytes/ pacemaker cells) to decrease the slope of phase 4.
pacemaker cells
(drug class)________ are often given with hydralazine to prevent reflex tachycardia caused by reflex sympathetic stimulation.
beta-blockers
Saline, __________ and atropine are used for metoprolol overdose.
Glucagon
Which class II antiarrhythmic can exacerbate vasospasm in Prinzmetal angina?
Propanolol
Which class of antiarrhythmics are contraindicated in cocaine users?
Class II; beta-blockers
