CV Meds: Beta Blockers Flashcards
(21 cards)
Why are beta blockers considered sympatholytics?
Bc they inhibit stimulation of receptor sites, resulting in decreased:
- cardiac excitability
- cardiac output
- myocardial O2 demand
How do beta blockers lower BP?
By decreasing release of renin in the kidney
Beta1 blockers act on which organ?
The heart
Beta2 blockers act on which organ?
The lungs
Which beta blockers are cardioselective? (They only act on B1)
- metoprolol
- atenolol
- metoprolol succinate
Which beta blockers are non selective? (They act on both B1 & B2)
- propranolol
- nadolol
- labetolol
Why are beta blockers considered sympatholytics?
Bc they inhibit the stimulation of receptor sites, resulting in decreased:
- cardiac excitability
- cardiac output
- myocardial O2 demand
How do beta blockers lower BP?
By decreasing release of renin in the kidney?
Beta1 blockers act on which organ?
The heart
Beta2 blockers work on which organ?
The lungs
Which beta blockers are cardioselective (work on B1)? (3)
- Metoprolol
- Atenolol
- Metoprolol succinate
Which beta blockers are nonselective (work on B1 & B2)? (3)
- propranolol
- nadolol
- labetolol
Side effects of beta blockers:
- bradycardia
- nasal stuffiness
- AV block
- rebound myocardium excitation if stopped abruptly
- bronchospasm
What can occur if beta blockers are stopped abruptly?
rebound myocardium excitation
What 5 things are beta blockers used for?
- Primary HTN
- Angina
- Tachydysrhythmias
- Heart failure
- Myocardial infarction
Beta blockers are contraindicated for patients with what? (2)
- AV block
- Sinus bradycardia
Do not administer nonselective (B1 & B2) beta blockers to pts with what? (3)
- Asthma
- Bronchospasm
- Heart failure
Which beta blocker may mask effects of hypoglycemia in those with DM?
Propranolol
Do not administer ______ in the same line as furosemide.
Labetolol
Hold beta blockers if VS reads what?
Sys: <100 mmHg
HR: <60 bpm
And notify provider!!!
With patients with DM, what should you monitor for?
Hypoglycemia
