NRCPCT EKG CH. 2 PART 1

when would the technician need to adjust the paper speed?

• when the heart rate is rapid

• when certain segments of a complex are close together

• always when the pt is having bradycardia

• both A or B

in lead 3 which of the following electrical impulses are recorded?

• R arm and L arm

• R arm and L leg

• L arm and L leg

• R leg and L leg

the vertical scale of the ECG paper measures which of the following?

• voltage

• size

• time

• all of the above

a rhythm strip is which of the following?

• helps the dr see the complete rhythm of the heart

• is in addition to the 12 leads

• ordered by the dr

• all of the above

in order to get a clear EKG tracing the pt must be lying:

• quietly in the prone position

• the supine position

• in the Sims position

• in the Trendelenburg position

V4 is considered which of the following?

• chest or precordial lead

• bipolar limb lead

• augmented or unipolar limb lead

• none of the above

the T wave can be defined as which of the following?

• first positive area produced by the depolarization of the ventricles

• isoelectric portion of the interval that precedes ventricular depolarization.

• it represents the depolarization of the ventricles, it represents a ventricular impulse.

• a long wave following QRS during repolarization of the ventricles.

where will the electrodes be placed to record the augmented leads of the 12 lead EKG?

• chest

• head

• arms and legs

• abdomen

The QRS complex can be defined as which of the following?

• first positive area produces by the depolarization of the ventricles

• it represents the depolarization of the ventricles, it represents a ventricular impulse.

• a long wave following QRS during repolarization of the ventricles

• is measured from the beginning of the Q wave through where the wave is completed.

the standardization of the EKG machine on each machine tells the the technician which of the following?

• stylus response

• testing of the amplifier sensitivity

• check of the instrument's setting

• all of the above