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NUR 254 ( LATEST 2024 / 2025 ) CARDIAC DYSRHYTHMIAS | COMPLETE ANSWERS 100% CORRECT
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NUR 254 ( LATEST 2024 / 2025 ) CARDIAC DYSRHYTHMIAS | COMPLETE ANSWERS 100% CORRECT
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NUR 254 Cardiac Dysrhythmias1. What does the p wave measure?
Answer
Depolarization and contraction of the atria (problem with p wave is problem with the atria)
2. What is the PR interval measuring? Where is it measured from?
Answer
Time it is taking from SA impulse to purkinje fibers (time it takes for atrium to squeeze blood
into ventricles) - From P to Q
3. What does the QRS complex measure?
Answer
Depolarization and contraction of the ventricles
4. What is the normal for the ST segment? What does it mean if it's elevated or depressed?
Answer
- Has to be the same level as the isoelectric line
- If elevated = infarct
- If depressed = injury
5. What does theT wave measure?
Answer
Repolarization of the ventricles (inverted with injury; peaked with hyperkalemia)
6. (T/F) A heart block is a physical blockage.
Answer
False (It's a block in conduction)
7. Where do you count from to tell if it's a regular rhythm?
, Answer
R to R
8. What is the normal duration for PR interval?
Answer
0.12 - 0.2 seconds
9. What is the normal duration for the QRS complex?
Answer
0.06 - 0.1 seconds
10. What is the normal duration for QT interval?
Answer
0.32 - 0.44 seconds
11. What is the biggest concern with dysrhythmias?
Answer
Cardiac output (some do not effect this profoundly and just need to be monitored instead of
intervened)
12. Sinus arrhythmia.
Answer
13. (T/F) There needs to be intervention for sinus arrhythmia.
Answer
False (nothing needs to be done)
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