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EKG test - NW Hospital review questions with 100% verified solutions

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EKG test - NW Hospital review questions with 100% verified solutions

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EKG test - NW Hospital review questions with 100% verified
solutions
1. 0.12-0.20 seconds what is the range for the PRI?

2. 0.06 - <0.12 seconds what is the range for the QRS
inter- val?

3. 0.32 - 0.44 seconds (for HR in the 60-100's) what is the range for the QT
inter-
val?

4. contraction of the heart what does depolarization
mean?

5. relaxation of the heart (filling period) what does repolarization mean?

6. 1. absolute refractory name the two types of
period
refractory periods
2. relative refractory
period

7. RRP - It is possible for a stimulus to cause anoth- describe the RRP
(relative refractory
er action potential, therefore this is the period) and why it can be lethal
vulnera- ble period of the cardiac cycle.

ex: the longer the QT interval, the more in-
creased risk for the RRP

(zofran, methadone, haldol and amio lengthen
the QT interval)

8. atrial depolarization what does the p wave
represent?

9. P-P interval how is the atrial heart rate
counted?

1/
11

, EKG test - NW Hospital review questions with 100% verified
solutions
10. Represents conduction time thru the what does the PRI represent?
atria, AV node and purkinje fibers

11. Represents ventricular depolarization what does the QRS interval
repre-
sent?




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11

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