Nur 255 Test 3 Updated Actual Questions And Correct Answers

NUR 255 TEST 3 UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Question:
1. electrical conduction of the heart
Answer:
SA node, AV node, Bundle of His, Bundle Branches, Purkinjie Fibers

Question:
2. P Wave
Answer:
atrial depolarization (contraction)

Question:
3. QRS Complex
Answer:
ventricular depolarization (contraction)

Question:
4. T Wave
Answer:
ventricular repolarization (relaxing)

Question:
5. Normal PRI
Answer:
0.12-0.20 seconds

Question:
6. Normal QRS
Answer:
less than 0.12 seconds

Question:
7. If the PRI is greater than .20 seconds
Answer:
1st degree AV block

Question:
8. If the QRS is greater than .12 seconds
Answer:
Bundle Branches Block

Question:
9. drug of choice for symptomatic bradycardia
Answer:
atropine

, Question:
10. what drugs can cause bradycardia?
Answer:
calcium channel blockers, beta blockers, amiodarone

Question:
11. diseases associated with bradycardia?
Answer:
hypothyroidism, increased intracranial pressure, inferior MI

Question:
12. what can cause sinus bradycardia?
Answer:
-carotid sinus massage
-vagal stimulation
-hypothermia
-valsalva maneuver
-increased intraocular pressure
-certain drugs

Question:
13. symptomatic manifestations of bradycardia
Answer:
-pale, cool skin
-hypotension
-weakness
-SOB
-angina
-dizziness/syncope
-confusion/disorientation

Question:
14. What are PVCs associated with?
Answer:
-stimulants
-electrolyte imbalances
-hypoxia
-fever
-exercise
-emotional stress

Question:
15. Two major dysfunctions in the process of cancer development
Answer:
1) defective cell proliferation (growth)
2) defective cell differentiation