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Author Question: Normal electrical axis lies between _____ degrees. a. 30 and +90 b. +90 and +180 c. 91 and ... (Read 73 times)

APUS57

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on: Jun 25, 2018
Normal electrical axis lies between _____ degrees.
 
  a. 30 and +90
  b. +90 and +180
  c. 91 and 180
  d. 1 and 90

Question 2

What factors affect afterload?
 
  What will be an ideal response?


cloudre37

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

A
In adults, the normal QRS axis is considered to be between 30 degrees and +90 degrees in the frontal plane.

Answer to Question 2

Afterload is the pressure or resistance against which the ventricles must pump to eject blood. Afterload is influenced by the following: arterial blood pressure, the ability of the arteries to become stretched (arterial distensibility), and arterial resistance.


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