NBRC SDS EXAM PRACTICE 2026/2027 LATEST TEST BANK
WITH 500 PRACTICE EXAM QUESTIONS AND CORRECT
VERIFIED ANSWERS LATEST UPDATE
1. What is the role of the sympathetic nervous system?
A. Rest and digest
B. Fight or flight
C. Controls smooth muscle
D. Regulates body temperature
Answer: B
2. What is the role of the parasympathetic nervous system?
A. Fight or flight
B. Increases heart rate
C. Controls smooth muscle
D. Dilates pupils
Answer: C
3. What is the pacemaker for circadian rhythm in the brain?
A. Pineal gland
B. Suprachiasmatic nucleus
C. Hypothalamus
D. Reticular activating system
Answer: B
4. What effect on sleep does a decrease in dopamine have?
A. Increase sleep
B. Decrease sleep
C. No effect
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,D. Increase REM sleep
Answer: B
5. If the distance between 2 R waves is between 3–5 large blocks, the rate is
______.
A. Bradycardia
B. Tachycardia
C. Normal
D. Uninterpretable
Answer: C
6. If the distance between 2 R waves is less than 3–5 large blocks, the rate is
______.
A. Normal
B. Bradycardia (<60 bpm)
C. Tachycardia (>90 bpm)
D. Asystole
Answer: C
7. If the distance between 2 R waves is greater than 3–5 large blocks, the rate is
______.
A. Normal
B. Tachycardia
C. Bradycardia (<60 bpm)
D. Atrial fibrillation
Answer: C
8. What is the formula for estimating heart rate on ECG?
A. 1500/(# of small boxes between R waves)
B. 300/(# of large blocks between R waves)
C. 60/(# of complexes in 6 seconds)
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,D. Both A and B
Answer: B
9. What are the causes and treatment of sinus tachycardia?
A. Blood loss; fluids
B. Hypoxemia, pain, stress; oxygen
C. Hyperkalemia; calcium
D. Heart block; pacemaker
Answer: B
10. What are common causes and treatment of sinus bradycardia?
A. Pain, fever; beta-blockers
B. Hypoxemia, stress; oxygen
C. Blood loss, infection of heart, OSA; treat underlying cause
D. Hyperthyroidism; surgery
Answer: C
11. What are common treatments for PVCs?
A. Atropine and pacing
B. Oxygen and lidocaine
C. Epinephrine and amiodarone
D. Adenosine and cardioversion
Answer: B
12. What is bigeminy?
A. PVC every 3rd beat
B. Two PVCs in a row
C. PVC every other beat
D. Three PVCs in a row
Answer: C
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, 13. What is trigeminy?
A. PVC every other beat
B. PVC every 3rd beat
C. Two PVCs in a row
D. PVC every 4th beat
Answer: B
14. What is a couplet?
A. PVC every other beat
B. PVC every 3rd beat
C. Two PVCs in a row
D. Three PVCs in a row
Answer: C
15. What is the treatment for VTach with a pulse?
A. Defibrillation
B. Cardioversion
C. Epinephrine
D. Atropine
Answer: B
16. What is the treatment for VTach without a pulse?
A. Cardioversion
B. Adenosine
C. Defibrillation
D. Pacing
Answer: C
17. Cardiac ischemia is indicated by:
A. Elevated ST segment
B. Depressed T waves
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WITH 500 PRACTICE EXAM QUESTIONS AND CORRECT
VERIFIED ANSWERS LATEST UPDATE
1. What is the role of the sympathetic nervous system?
A. Rest and digest
B. Fight or flight
C. Controls smooth muscle
D. Regulates body temperature
Answer: B
2. What is the role of the parasympathetic nervous system?
A. Fight or flight
B. Increases heart rate
C. Controls smooth muscle
D. Dilates pupils
Answer: C
3. What is the pacemaker for circadian rhythm in the brain?
A. Pineal gland
B. Suprachiasmatic nucleus
C. Hypothalamus
D. Reticular activating system
Answer: B
4. What effect on sleep does a decrease in dopamine have?
A. Increase sleep
B. Decrease sleep
C. No effect
1|Page
,D. Increase REM sleep
Answer: B
5. If the distance between 2 R waves is between 3–5 large blocks, the rate is
______.
A. Bradycardia
B. Tachycardia
C. Normal
D. Uninterpretable
Answer: C
6. If the distance between 2 R waves is less than 3–5 large blocks, the rate is
______.
A. Normal
B. Bradycardia (<60 bpm)
C. Tachycardia (>90 bpm)
D. Asystole
Answer: C
7. If the distance between 2 R waves is greater than 3–5 large blocks, the rate is
______.
A. Normal
B. Tachycardia
C. Bradycardia (<60 bpm)
D. Atrial fibrillation
Answer: C
8. What is the formula for estimating heart rate on ECG?
A. 1500/(# of small boxes between R waves)
B. 300/(# of large blocks between R waves)
C. 60/(# of complexes in 6 seconds)
2|Page
,D. Both A and B
Answer: B
9. What are the causes and treatment of sinus tachycardia?
A. Blood loss; fluids
B. Hypoxemia, pain, stress; oxygen
C. Hyperkalemia; calcium
D. Heart block; pacemaker
Answer: B
10. What are common causes and treatment of sinus bradycardia?
A. Pain, fever; beta-blockers
B. Hypoxemia, stress; oxygen
C. Blood loss, infection of heart, OSA; treat underlying cause
D. Hyperthyroidism; surgery
Answer: C
11. What are common treatments for PVCs?
A. Atropine and pacing
B. Oxygen and lidocaine
C. Epinephrine and amiodarone
D. Adenosine and cardioversion
Answer: B
12. What is bigeminy?
A. PVC every 3rd beat
B. Two PVCs in a row
C. PVC every other beat
D. Three PVCs in a row
Answer: C
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, 13. What is trigeminy?
A. PVC every other beat
B. PVC every 3rd beat
C. Two PVCs in a row
D. PVC every 4th beat
Answer: B
14. What is a couplet?
A. PVC every other beat
B. PVC every 3rd beat
C. Two PVCs in a row
D. Three PVCs in a row
Answer: C
15. What is the treatment for VTach with a pulse?
A. Defibrillation
B. Cardioversion
C. Epinephrine
D. Atropine
Answer: B
16. What is the treatment for VTach without a pulse?
A. Cardioversion
B. Adenosine
C. Defibrillation
D. Pacing
Answer: C
17. Cardiac ischemia is indicated by:
A. Elevated ST segment
B. Depressed T waves
4|Page
