Atrial Fibrillation Flashcards
1
Q
definition of AF
A
- irregularly irregular ventricular rhythm
- rate of 80-170
- NO P waves in any leads
2
Q
the presence of these 2 findings on ECG RULES OUT AF
A
- deformed T waves “hiding” P waves
2. deformed ST segments “hiding” P waves
3
Q
do NOT confuse AF w/
A
- ST w/ PACs
- MAT in pts w/ COPD
- Mobitz thype 1 second-degree AVB w/ group-beating
- arrhythmia d/t digitalis toxicity (AT w/ block)
4
Q
AF can mimic VF in what setting?
irregular, wide-complex tachycardia
A
- underlying intraventricular conduction delay (RBBB)
- accessory pathway
5
Q
diagnostic studies for AF
A
- serum TSH
- digoxin level (if appropriate)
- pulse ox
- echocardiography
6
Q
tx for AF
A
chronic AC
7
Q
r/o stroke in pts w/ nonvalvular AF plus one other risk factor exceeds r/o what?
A
hemorrhage from AC
8
Q
AC goals in AF:
- CHADS2 score = 0
A
aspirin
9
Q
AC goals in AF:
- CHADS2 score = 1
A
individual assessment
10
Q
AC goals in AF:
- CHADS2 score = 2 or more
A
warfarin; INR 2-3
11
Q
CHA2DS2-VASc: 1 point given for
A
- HF
- HTN
- DM
- vascular dz (h/o MI, PAD, aortic plaque)
- female
- ages 65-74
12
Q
CHA2DS2-VASc: 2 points given for
A
- h/o CVA, TIA, or VTE
- age 75 or older
13
Q
how are all the DOACs cleared?
A
renally
14
Q
DOACs are CI in which pts?
A
ESRD
15
Q
why is bridging not required for AF when starting AC, including when AC is interrupted for procedures?
A
daily r/o stroke is low
