Rhythm strip interpretation and sinus rhythms

Question 1

5 steps to interpretation

Answer 1

1. rhythm
2. rate
3. P wave configuration
4. PR interval
5. QRS duration measurement

Question 2

What is the normal PR interval?

Answer 2

0.12 - 0.20 second

Question 3

What is the range for a normal QRS?

Answer 3

0.06 - 0.10 second

Question 4

Name 4 important QRS questions you should be asking yourself.

Answer 4

1. Are all QRS equal of length?
2. In normal range?
3. Do they look alike?
4. Associated with ectopic beat?

Question 5

If patient has returned to sinus rhythm from another dysrhythmia, what should be your next move?

Answer 5

check cardiac output

Question 6

Define normal cardiac output

Answer 6

The heart is beating adequately, pumping blood to the bodies vital organs

Question 7

What is IST?

Answer 7

inappropriate sinus tachycardia

Question 8

What are the criterias for sinus dysrhythmia?

Answer 8

1. Irregular Heart Rate
2. P, PR and QRS are the same as in normal rhythm

Question 9

What causes dysrhythmia?

Answer 9

R-R will progressively widen following the patient’s breathing pattern

Question 10

What is Sinus Arrest, describe the EKG findings?

Answer 10

1. SA node stops firing
2. interval between two P and two R waves is irregular

Question 11

What is asystole?

Answer 11

Flatline or Ventricular Standstill