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Author Question: A Q wave, if present, is always a negative waveform. Indicate whether the statement is true or ... (Read 51 times)

Shelles

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on: Jun 25, 2018
A Q wave, if present, is always a negative waveform.
 
  Indicate whether the statement is true or false

Question 2

Complete the following chart:
 
  Lead Positive Electrode Negative Electrode Heart Surface Viewed
  Lead I ____________ ____________ ____________
  Lead II ____________ ____________ ____________
  Lead III ____________ ____________ ____________
 
  Fill in the blanks with correct word


234sdffa

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Reply #1 on: Jun 25, 2018
Answer to Question 1

T
The QRS complex begins as a downward deflection, the Q wave. A Q wave is always a negative waveform. The Q wave begins when the ECG leaves the isoelectric line in a downward direction and continues until it returns to the isoelectric line. The Q wave represents depolarization of the interventricular septum, which is activated from left to right.

Answer to Question 2

Lead Positive Electrode Negative Electrode Heart Surface Viewed
Lead I Left arm Right arm Lateral
Lead II Left leg Right arm Inferior
Lead III Left leg Left arm Inferior


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