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NUR 347 ( LATEST 2024 / 2025 ) DYSRHYTHMIAS | LATEST QUESTIONS WITH COMPLETE GRADE A++ ANSWERS
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NUR 347 ( LATEST 2024 / 2025 ) DYSRHYTHMIAS | LATEST QUESTIONS WITH COMPLETE GRADE A++ ANSWERS
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NUR 347 Dysrhythmias1. What is depolarization of cardiac cells?
Answer
Contraction
2. What is repolarization in cardiac cells?
Answer
relaxation
3. What is clinical significance?
Answer
it means you need to do a really good evaluation of the patient
4. T or F the patient should be treated and not the rhythm?
Answer
TRUE
5. What are some clinical sx of decreased cardiac output?
Answer
-decreased BP
-Decrease O2 sat
,-dizziness
-syncope
-palpitations
-cold and clammy skin
-diaphoresis
-pallor
-restlessness
-weakness
-fatigue
-chest or arm pain, numbness or tingling of arms
-feeling of impending doom
6. What is the pathway of impulse transmission in the heart?
Answer
SA>AV>bundle of his> down bundle of branches and out purkinje fibers
7. What do dysrhythmias result from?
Answer
disorders of impulse formation, conduc- tion of impulses, or both.
8. What is the fxn of the SA node?
Answer
pace maker
9. What is the intrinsic HR of the SA node?
Answer
60-100
,10. If the HR is over 60 this means the origin is most likely in the?
Answer
SA node
11. What is the AV node?
Answer
the back up of the pacemaker
12. What is the intrinsic HR of the AV node?
Answer
40-60
13. What are the ventricles?
Answer
the back up of the back up
14. What is the intrinsic HR of the ventricles?
Answer
20-45, usually not good
15. What does the P wave represent?
Answer
atrial depolarization and correlates with atrial contraction
, 16. What does the PR interval represent?
Answer
atrial depolarization + a delay in the AV junction
17. What does the delay in the PR interval allow?
Answer
allows the atria to contract first
18. What does the QRS represent?
Answer
ventricular depolarization, correlates with ventricular contraction
19. What does the T wave represent?
Answer
ventricular repolarization, correlates with ventricular relaxation
20. What does one small box on a horizontal ECG paper measure as?
Answer
0.04s
21. What does one large box on a horizontal ECG paper measure as?
Answer
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