EKG III / IV Flashcards
1
Q
P wave inversions can be normal in what leads
A
aVR and V1
2
Q
sinus arrhythmia can be normal in what population
A
young and healthy
3
Q
describe the rate, rhythm, and P waves in sinus arrest
A
- rate: changing
- rhythm: irregular
- P waves: one for every QRS, has >2second pause
4
Q
how is a PAC identified
A
- EARLY P wave
- abnormal P wave (differs in shape from sinus P wave)
- QRS complex is normal and narrow
5
Q
if every other beat is a PAC, this is known as _____
A
bigeminy
6
Q
if every third beat is a PAC, this is known as _____
A
trigeminy
7
Q
PACs in paired beats is known as a ____
A
couplet
8
Q
describe the rate, rhythm, and P waves in multifocal atrial tachycardia
A
- rate: >100 bpm
- rhythm: irregularly irregular
- P waves vary
9
Q
what are the characteristics of SVT
A
- rate: 16-250 bpm
- rhythm: regular
- P: difficult to distinguish from T waves
- QRS: NARROW
10
Q
what are the characteristics of atrial flutter
A
- rate: ~300 bpm
- rhythm: regular
- QRS: normal
- NO visible PR int, T waves, ST segments
11
Q
“saw tooth” pattern is seen in _____
A
atrial flutter
12
Q
acute A-fib lasts _____
A
< 48 hours
13
Q
chronic A-fib lasts ____
A
at least 1 month
14
Q
what are the characteristics of A-fib
A
- rhythm: irregularly irregular
- P: NO discernable Pw
- chaotic isoelectric line
15
Q
what is controlled, rapid, and slow Af-b
A
- controlled: 70-110 bpm
- rapid: > 120-130 bpm
- slow: < 60 bpm
