week 4 quiz

Question 1

Which of the following is correct when we refer to the normal quadrant?

Select one:

a. Lead I is positive
b. Lead aVF is positive
c. Both A & B are correct
d. None of the above

Answer 1

c. Both A & B are correct

Question 2

Which one is correct when we refer to the left quadrant?

Select one:

a. Lead I is negative
b. Lead aVF is positive
c. Both A & C are correct
d. None of the above

Answer 2

d. None of the above

Question 3

Which one is correct when we refer to the right quadrant?

Select one:

a. Lead I is negative
b. Lead aFV is negative
c. Both A & B are correct
d. None of the above

Answer 3

a. Lead I is negative

Question 4

Which one is correct when we refer to the extreme right quadrant?

Select one:

a. Lead I is negative
b. Lead aVF is negative
c. Both A & B are correct
d. None of the above

Answer 4

c. Both A & B are correct

Question 5

Which of the five steps below is incorrect in calculating the electrical axis of the heart?

Select one:

a. find the quadrant
b. isolate the isoelectric lead
c. isolate the closest lead and isolate the vector to 10 degrees
d. all of the above

Answer 5

d. all of the above

Question 6

The most common causes of left axis deviation include:

Select one:

a. left posterior hemiblock
b. ectopic ventricular beats and rhythms
c. Both A & B
d. none of the above.

Answer 6

b. ectopic ventricular beats and rhythms

Question 7

What is the most common cause of left axis deviation?

Select one:

a. Defects of the conduction system
b. Left ventricular hypertrophy
c. Atrial septal defects
d. Right ventricular hypertrophy

Answer 7

a. Defects of the conduction system

Question 8

What is a common cause of right axis deviation?

Select one:

a. Ventricular septal defect
b. Atrial septal defect
c. Right ventricular hypertrophy
d. Left ventricular hypertrophy

Answer 8

c. Right ventricular hypertrophy

Question 9

What view of the heart do leads I, aVL, V5 and V6 represent?

Select one:

a. anterior
b. lateral
c. septal
d. inferior

Answer 9

b. lateral

Question 10

If ST-elevation was noted in leads II, III and aVF what would it suggest?

Select one:

a. Anterior
b. Lateral
c. Inferior
d. Septal

Answer 10

c. Inferior