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Author Question: The time required for the atrial impulse to travel through the atrioventricular node is defined as ... (Read 50 times)

kellyjaisingh

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on: Jul 16, 2018
The time required for the atrial impulse to travel through the atrioventricular node is defined as which of the following?
 
  a. PR segment c. QRS interval
  b. PR interval d. ST segment

Question 2

How many millimeters are between each heavy vertical line on electrocardiographi c paper?
 
  a. 1.0 c. 4.0
  b. 2.0 d. 5.0


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hramirez205

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
The PR interval ranges from 0.12 to 0.2 second and is the time it takes for the impulse initiated in the atria to travel through the atrioventricular node. The PR segment occurs between the end of the P wave and the beginning of the QRS interval, corresponds to the 0.1-second delay that occurs within the atrioventricular node. The PR segment is included in the PR interval. The QRS interval represents ventricular depolarization, and the ST segment represents ventricular depolarization.

Answer to Question 2

ANS: D
The area between the heavy vertical lines on the electrocardiographi c paper represents 5.0 mm.


kellyjaisingh

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Reply 2 on: Jul 16, 2018
Thanks for the timely response, appreciate it

raenoj

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Reply 3 on: Yesterday
Wow, this really help

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