EKG Quiz 4 th period

What is the external layer of the heart?

• Endocardium

• Pericardium

• Epicardium

• Myocardium

What is the normal limit for the QRS duration?

• .12-.20 seconds

• 1-2 minutes

• .06-.10 seconds

• .30-.20 seconds

How do you calculate irregular rates?

• p-p wave intervals

• r-r intervals

• 6- second method

Atrial fibrillation has a P wave.

• True

• False

The ventricular pacemaker cells are in what part of the heart?

• SA nodes

• Purkinje fibers

• AV nodes

• Bundle of his

The gain controls the height of the waveform.

• True

• False

What are the primary ekg machine functions?

• Input, signal processing, output display

• Input, output display, diagnosis

• Signal processing, input reading, input display

What are augmented leads?

• I, II, III

• RA, LA, LL,RL

• Isoelectric, positive, negative

• aVR, aVL, AvF

What is the apex?

• Upper tip

• Lower tip

• Outer lining

• Inner lining

What method do you use for abnormal heart rate?

• 6 seconds

• 1500 method

• 300 method

• You cannot calculate heart rate