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Administrator [Date] [Course title]
,1st Degree AV - Answer>> if the R is far from P, then you have a first degree
2nd Degree AV type 1 - Answer>> longer, longer, longer, drop (the QRS), then
you have a wenkebach
2nd Degree AV type 2 - Answer>> if some Ps don't get through, then you have
a Mobitz 2
(missing QRS)
3rd Degree AV - Answer>> if Ps and Qs don't agree, then you have a third
degree
junctional signs - Answer>> -p is inverted and too close
-p is missing/burried
-p is inverted and in the ST segment
-PR<0.12
-QRS<0.12
2/
, 1. what does each small box represent .04 seconds
2. what does 1 large box (5 small boxes) represent .20 seconds
3. what do 5 large boxes represent 1 second
4. primary pacemaker SA node w/expected
fir- ing rat of 60-100
bpm
5. backup pacemaker AV node w/expected
fir- ing rate of 40-60
bpm
6. final pacemaker ventricles w/expected
fir- ing rate less than
40 bpm
7. a normal PR interval is .12-.20 seconds
8. a normal QRS interval is < .12 seconds
(.04-.11)
9. a normal QT interval is .36-.44 seconds
10.the ST segment should be with the level w/ the baseline
11.ST segment elevation and depression is an ischemia or injury to
indi- cation of the heart
12. what does P wave represent on the ECG atrial depolarization
13. what does P wave represent on the ECG ventricular
depolariza-
tion
14. what does P wave represent on the ECG repolarization of
ventri-
cles
3/