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Author Question: The QRS of an ECG falls on a dark vertical line of the ECG paper. Subsequent QRS complexes fall on ... (Read 35 times)

wenmo

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on: Jul 16, 2018
The QRS of an ECG falls on a dark vertical line of the ECG paper. Subsequent QRS complexes fall on every other dark line (10 mm apart). What is the ventricular rate?
 
  a. 300/min
  b. 200/min
  c. 150/min
  d. 100/min

Question 2

What parameter is measured on the vertical axis of the ECG paper?
 
  a. Time
  b. Voltage
  c. Cardiac contraction rate
  d. Blood flow


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lkanara2

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

ANS: C
You can count the number of large boxes between two successive complexes and divide this number by 300 to obtain the heart rate.

Answer to Question 2

ANS: B
ECG paper is made up of gridlike boxes that define time on the horizontal axis and voltage on the vertical axis.


wenmo

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Reply 2 on: Jul 16, 2018
Wow, this really help

kthug

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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