NCCT Practice Test - Labs Part Two
This is from section V of the big study book.
- 1.In the positioning of the electrodes, if the electrodes are placed to close together, the amplitude will be ______.
- A.
Small
- B.
Large
- C.
Round
- D.
Square
- 2.The large squares on the ECG paper are equal to
- A.
0.10 sec
- B.
0.20 sec
- C.
0.40 sec
- D.
0.09 sec
- 3.A "V wave" will _____ be seen in a normal EKG.
- A.
Always
- B.
Sometimes
- C.
Never
- D.
Usually
- 4.The _____ switch controls the gain or amplitude on the EKG.
- A.
Major
- B.
Sensitivity
- C.
Red
- D.
Ticker
- 5.When preparing for lead placement you should first care for ______.
- A.
Skin preparation
- B.
Application of electrode wires
- C.
Application of electrodes
- D.
Positioning of electrodes
- 6.Conversion of a dysrhythmia to a normal rhythm by applying electric shock to the chest is called ___.
- A.
Cardiac scan
- B.
Pacemaker implant
- C.
Defibrillation
- D.
Endarterectomy
- 7.Which of the following is not a criteria for skin preparation for lead placement?
- A.
Clean the skin with an alcohol swipe
- B.
Make sure the skin is damp when applying the electrode
- C.
Shave the hair from the skin
- D.
Roughen the skin for better dermis contact
- 8.The electrode site should be _____.
- A.
Clean, smooth, and dry
- B.
Hairy
- C.
Have plenty of skin oil present
- D.
Moist
- 9.An ECG tracing measures the amount of voltage and the ____ it takes for the voltage to travel throughout the heart.
- A.
Time
- B.
Route
- C.
Waves
- D.
Lines
- 10.In the application of electrodes, secure the electrode by rubbing your finger around the _____ area.
- A.
Center
- B.
Gel
- C.
Adhesive
- D.
Peripheral
- 11.When there is no variation of R-R intervals it is called ______.
- A.
Irregular with a pattern
- B.
Absolutely regular
- C.
Essentially regular
- D.
Totally irregular
- 12.Ventricular depolarization produces an electrical force or vector with 2 components: 1. magnitude or force, and 2. _____.
- A.
Amplitude
- B.
Ground electrode
- C.
Direction or shape
- D.
Polarization
- 13.A downward or negative wave of an electrocardiogram following the P wave is the _____.
- A.
R wave
- B.
T wave
- C.
Q wave
- D.
S wave
- 14.A premature ventricular contraction (PVC) where the QRS have the same configuration each time they appear is called ______.
- A.
Uniform
- B.
Malignant
- C.
Fused
- D.
Bigeminy
- 15.When applying leads, apply the VI lead _______.
- A.
Directly lateral to V4 at the anterior axillary line
- B.
The fourth intercostal space right sternal border
- C.
Lateral to V5 at midaxillary line
- D.
Fifth intercostal space midclavicular line
- 16.Which fact is true about the P wave?
- A.
Duration of the P wave is not greater than 0.11 sec
- B.
Height deflection is small, not more than 3mm
- C.
Both A and B
- D.
No correct answer
- 17.When PVC's fall on the T wave, occur in pairs, runs of 3 or more, or are multiform in nature, these conditions are called _____.
- A.
Fused
- B.
Multiform
- C.
Life threatening
- D.
Uniform
- 18.When a vector travels away from the positive electrode, a _____ deflection results.
- A.
Positive
- B.
Variation
- C.
T wave
- D.
Negative
- 19.The combination of sensors or electrodes used for lead #1 is ______.
- A.
Right arm, left leg
- B.
Right arm, right leg
- C.
Left arm, right arm
- D.
Left arm, left leg
- 20.Concerning ECG's for irregular rhythms, any method of rate calculation that depends on intervals between complexes is _____.
- A.
Acceptable
- B.
Computed using 1/2 as fast: 300/2 = 150/minute
- C.
Unreliable
- D.
Computed by counting the number of complexes in a span of 30 large boxes
- 21.The ______ wave represents atrial depolarization
- A.
S
- B.
P
- C.
R
- D.
U
- 22.While the duration of the ST segment is not generally of clinical significance, it is an exceedingly important portion of the ECG because of _____.
- A.
The fact that it follows the QRS complex
- B.
Shifts up or down from the baseline
- C.
Upward deflection from the baseline
- D.
The shift away from the ischemic area
- 23.A QRS measurement of less than _____ seconds indicates a supraventricular pacemaker.
- A.
0.13
- B.
0.14
- C.
0.16
- D.
0.12
- 24.The area between waves is referred to as _____.
- A.
Back spaces
- B.
Intervals
- C.
Segments
- D.
Cycles
- 25.A terminal lethal dysrhythmia, a dying heart, is called _____.
- A.
Agonal
- B.
Asystole
- C.
Agonist
- D.
Agogue
Questions: 59 | Attempts: 56995 | Last updated: Apr 12, 2021
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