Basic Dysrhythmia Questions and Answers (Basic A Dysrhythmia)

Basic Dysrhythmia Questions and Answers (Basic A Dysrhythmia)
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1. normal CO 4-8L

2. SA node 60-100 bpm

3. AV node 40-60 bpm

4. small square on ECG pa- 0.04 sec
per

5. big square on ECG paper 0.2 sec

6. steps to interpreting ECG 1. heart rate
strips 2. measure R-R to look at regularity
3. p wave- there should be one for every QRS
4. PR interval
5. QRS complex

7. normal PR interval 0.12-0.20 sec (3-5 small boxes)

8. normal QRS complex 0.06-0.12 sec (1.5-3 small boxes)

9. Normal sinus rhythm regular rhythm of the heart cycle stimulated by the SA node (average
(NSR) rate of 60-100 beats/minute)




10. Sinus Bradycardia (SB) The heart rate is less than 60 and all other measurements are within
normal limits. Originates from SA node.




11. Sinus Tachycardia (ST) The heart rate is greater than 100 and all other mesurements are within
normal limits. Originates from SA node.
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