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You’re sure this is how an EKG is done, huh?

You’re sure this is how an EKG is done, huh?. 3. Wave. 1. Wave. 2. Wave. Normal EKG. 4. Interval. 5. Interval. 6. How long normally is the interval pointed to in Question 4? 7. How long normally is the interval pointed to in Question 5?

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You’re sure this is how an EKG is done, huh?

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  1. You’re sure this is how an EKG is done, huh?

  2. 3. Wave 1. Wave 2. Wave Normal EKG 4. Interval 5. Interval 6. How long normally is the interval pointed to in Question 4? 7. How long normally is the interval pointed to in Question 5? 8. What is the normal duration of the QRS complex (wave form)?

  3. What events are occurring during the wave pointed to in Question 1? • What events are occurring during the wave pointed to in Question 2? • What events are occurring during the wave pointed to in Question 3? • What events are occurring during the interval pointed to in Question 4? • What events are occurring during the interval pointed to in Question 5?

  4. Time = 4.3 sec Time = 0.9 sec Time = 1.1 sec Time = 1.3 sec Time = 1.0 sec 9. Given the time intervals above, calculate the heart rate.

  5. 3. QRS wave 1. P wave 2. T wave Normal EKG 4. QT interval 5. PR (or PQ) interval 6. How long normally is the interval pointed to in Question 4? < 0.38 sec 7. How long normally is the interval pointed to in Question 5? 0.12 – 0.20 sec 8. What is the normal duration of the QRS complex (wave form)? < 0.10 sec

  6. What events are occurring during the wave pointed to in Question 1? The P wave signals atrial depolarization. • What events are occurring during the wave pointed to in Question 2? The T wave signals ventricular repolarization. • What events are occurring during the wave pointed to in Question 3? The QRS complex signals ventricular depolarization • What events are occurring during the interval pointed to in Question 4? During the QT interval, a complete cycle of ventricular depolarization and repolarization occurs • What events are occurring during the interval pointed to in Question 5? During the PR (PQ) interval, the signal from the cardiac conduction system is traveling from the SA node through the AV node.

  7. = = Time = 4.3 sec Time = 0.9 sec Time = 1.1 sec Time = 1.3 sec Time = 1.0 sec 9. Given the time intervals above, calculate the heart rate. Method 1. Using the total time for 4 beats: 4 beats ? beats4.3 sec 60 sec. ≈ 56 beats (per minute) Method 2. Using the average time for 1 beat: 1 beat ? beats1.1 sec 60 sec. ≈ 56 beats (per minute)

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