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Electrocardiogram Lab (ECG) This Exercise is done using the Ph.I.L.S CD   Do the lab #22. ECG and...

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Medical Sciences

Electrocardiogram Lab (ECG)

This Exercise is done using the Ph.I.L.S CD  

Do the lab #22. ECG and Exercise.Or just click here to there

Look at your data and compare each time interval for the restingand post-exercise state.

  1. Are any of the time intervals approximately constant?
  2. With the exception of the R-R interval, which time intervalshows the greatest difference between resting and post-exercise?Explain this observation.
  3. If the coronary arteries fill when the heart muscle is relaxed,what happens to the time course of coronary blood flow when theheart rate is increased?
  4. What happens to the amount of work done by the heart as theheart rate is increased?

Would this explain why most heart attacks (periods when there isinsufficient blood flow to parts of the heart) take place duringphysical exertion?

Answer & Explanation Solved by verified expert
3.7 Ratings (492 Votes)
Answer 1RR interval is irregular while thePR interval shows the constant time interval PR interval is alsocalled the PQ intervalAnswer 2The QT time interval shows thebiggest difference between resting and postexercise Duringresting    See Answer
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