Heart Failure Flashcards
1
Q
no limitation of ordinary activity (which NYHA class of HF)
A
Class I
2
Q
slight limitation of activity- symptoms with normal activity (which NYHA class of HF)
A
Class II
3
Q
marked limitation of physical activity- symptoms with mild activity (which NYHA class of HF)
A
Class III
4
Q
symptoms occur at rest (which NYHA class of HF)
A
Class IV
5
Q
steps for dig toxicity (4)
A
- Stop dig & potassium wasting diuretics
- Monitor potassium & give potassium
- May need to give antidysrhythmics (phenytoin or lidocaine)
- Severe cases give fab antibody fragments which bind to dig &prevent it from activating.
6
Q
most common reason for digoxin-related dysrhythmias?
A
diuretic-induced hypokalemia
7
Q
antidote for severe digoxin overdose
A
fab antibody fragments (digibind/digifab)
8
Q
how is digoxin eliminated?
A
renal excretion
9
Q
GI effects of digoxin (3)
A
anorexia, N/V
10
Q
CNS effects of digoxin (2)
A
fatigue & visual disturbances
11
Q
what provides advanced warning of serious digoxin toxicity?
A
GI & CNS effects
12
Q
routine therapy for stage C HF should include 3 medications:
A
diuretic
ACE or an ARB
beta blocker
13
Q
most serious adverse effect of digoxin
A
cardiotoxicity - dysrhythmias
14
Q
medication classes that interact with digoxin (4)
A
- diuretics (thiazide & loop)
- ACEs & ARBs (elevate K+)
- sympathomimetics (increase risk for dysrhythmias)
- Quinidine (can elevate plasma levels of digoxin)
15
Q
contraindications for digoxin (3)
A
V-fib
V-tach
dig toxicity
