Mayo Clinic EKG Review Questions With Already Solved Correctly
Answers
1. What is the purpose of ECG? Measures electrical physiology of the heart, rate/rhythm,
and elec-
trical activity.
2. The pacemaker site Atria
within the generally
con- trols the heart.
3. The sympathetic INCREASES
nervous system heart
rate, conduction, and
irri- tability.
4. The parasympathetic DECREASES
ner- vous system
heart rate, conduction,
and irritability.
5. PR Interval 0.12-0.20, 3-5 small boxes
6. QRS Complex < 0.12, 3 small boxes
7. QT Interval 0.35-0.43
8. Refractory Period 2nd half of T wave, where impulses get through
9. Large Square Method # of big squares between two R waves, divided into 300
10. Small Square Method # of small squares between two R waves, divided into 1500
11. Sinus Bradycardia Regular
<60BPM
Uniform P
Waves PR =
0.12-0.20
1/
14
, Mayo Clinic EKG Review Questions With Already Solved Correctly
Answers
QRS = <0.12
2/
14
Answers
1. What is the purpose of ECG? Measures electrical physiology of the heart, rate/rhythm,
and elec-
trical activity.
2. The pacemaker site Atria
within the generally
con- trols the heart.
3. The sympathetic INCREASES
nervous system heart
rate, conduction, and
irri- tability.
4. The parasympathetic DECREASES
ner- vous system
heart rate, conduction,
and irritability.
5. PR Interval 0.12-0.20, 3-5 small boxes
6. QRS Complex < 0.12, 3 small boxes
7. QT Interval 0.35-0.43
8. Refractory Period 2nd half of T wave, where impulses get through
9. Large Square Method # of big squares between two R waves, divided into 300
10. Small Square Method # of small squares between two R waves, divided into 1500
11. Sinus Bradycardia Regular
<60BPM
Uniform P
Waves PR =
0.12-0.20
1/
14
, Mayo Clinic EKG Review Questions With Already Solved Correctly
Answers
QRS = <0.12
2/
14
