The axes of leads I, II, and III form an equilateral triangle with the heart at the center (Einthoven's triangle).
If the augmented limb leads are added to this configuration and the axes of the six leads moved in a way in which they bisect each other, the result is the _____ _____ _____.
Fill in the blanks with correct word
Question 2_____ is the ability of cardiac cells to spontaneously initiate an electrical impulse without being stimulated from another source.
Fill in the blanks with correct word
Question 3What factors affect stroke volume?
What will be an ideal response?
Question 4The PR interval of a first-degree AV block _____.
a. is constant and less than 0.12 seconds in duration
b. is constant and more than 0.20 seconds in duration
c. is generally progressive until a P wave appears without a QRS complex
d. gradually decreases in duration until a P wave appears without a QRS complex
Question 5The PR interval is considered prolonged if it is more than _____ seconds in duration.
a. 0.06
b. 0.12
c. 0.18
d. 0.20