EKG III

Question 1

typical duration of rhythm strip

Answer 1

6 sec

Question 2

typical duration of 12-lead EKG

Answer 2

10 sec

Question 3

HR from a rhythm strip

Answer 3

QRS # x 10

Question 4

HR from a 12-lead

Answer 4

QRS # X 6

Question 5

4 criteria for Normal Sinus Rhythm (if one of these is abnormal = arrhythmia)

Answer 5

1- normal P waves
2- QRS complexes are narrow (< 3 small boxes)
3- one P wave before every QRS
4- equal wave frequency (differences < 1 big box)