On the ECG, the T wave represents _____.

On the ECG, the T wave represents _____.
 
  a. atrial contraction
  b. atrial repolarization
  c. ventricular contraction
  d. ventricular repolarization

Question 2

Lead II views the _____ wall of the left ventricle.
 
  a. anterior
  b. inferior
  c. septal
  d. lateral

Question 3

What is meant by the term ejection fraction?
 
  What will be an ideal response?

Question 4

In pacing, rate modulation refers to _____.
 
  a. the ability of a pacemaker to recognize and respond to intrinsic electrical activity
  b. the minimum level of electrical current needed to consistently depolarize the myocardium
  c. the ability of a pacemaker to increase the pacing rate in response to physical activity or metabolic demand
  d. a pacing lead with a single electrical pole at the distal tip of the pacing lead through which the stimulating pulse is delivered.

Question 5

The intrinsic rate of the SA node is _____ beats/min.
 
  a. 40 to 60
  b. 60 to 100
  c. 100 to 180
  d. 200 to 260

Question 6

Where should the positive electrode for lead V1 be positioned?
 
  a. Right side of the sternum, fourth intercostal space
  b. Left midaxillary line at the same level as V4
  c. Left side of the sternum, fourth intercostal space
  d. Left anterior axillary line at the same level as V4

Question 7

Define systole.
 
  What will be an ideal response?

Question 8

The intrinsic rate of the Purkinje fibers is _____ beats/min.
 
  a. 20 to 40
  b. 40 to 60
  c. 60 to 100
  d. 100 to 180