Chapter 3. The Electrocardiograph

Multiple Choice Questions


1. The ECG waveform is indicative of:
A. How the heart is functioning electrically
B. Abnormal heart valve conditions
C. Contraction of heart muscles
D. Heart's pumping capability



2. The Einthoven triangle is formed by the following three limb leads:
A. Right arm, left arm, right leg
B. Right leg, left arm, left leg
C. Right arm, left arm, left leg
D. None of these



3. All of the following are types of leads from the 12-lead ECG EXCEPT:
A. Bipolar
B. unipolar
C. Chest
D. Abdomen



4. Which of the following is NOT considered a bipolar lead?
A. Lead I
B. Lead II
C. AVR
D. Lead III



5. The proper location to place the V1 lead is the:
A. Fourth intercostal space, left sternal border
B. Fifth intercostal space at the midclavicular line

,C. Fifth intercostal space, midaxillary line
D. Fourth intercostal space, right sternal border


6. For the proper placement of V3, you must have placed which other two leads on the
patient's chest?
A. V2 and V4
B. V2 and V5
C. V5 and V4
D. V4 and V6



7. Unipolar leads include all the lead types EXCEPT:
A. Standard
B. Augmented
C. Chest
D. Precordial



8. To obtain a 12-lead ECG tracing, you must apply how many lead wires and electrodes to
the patient?
A. 8
B. 12
C. 10
D. 3



9. The proper location to place the V2 lead is the:
A. Fourth intercostal space, left sternal border
B. Fifth intercostal space at the midclavicular line
C. Fifth intercostal space, midaxillary line
D. Fourth intercostal space, right sternal border



10. The three types of leads that make up a 12-lead ECG consist of:
A. 6 standard, 3 augmented, and 3 chest leads

, B. 3 standard, 3 augmented, and 6 chest leads
C. 6 augmented, 3 standard, and 3 chest leads
D. 4 augmented, 4 standard, and 4 chest leads


11. Identify the basic function(s) of the electrocardiograph.
A. Input
B. Signal processing
C. Output display
D. All of the above



12. The signal processing occurs inside the ECG machine, and it:
A. Amplifies the electrical impulse
B. Converts the impulse into mechanical actions on the display
C. Prepares the signal for transfer to the output display or printed report D. All of the above



13. The most common setting for standard speed rate for the ECG machine is:
A. 40 mm/sec
B. 25 mm/sec
C. 10 mm/sec
D. 50 mm/sec



14. The gain control is normally set at:
A. 10 mm/mV
B. 20 mm/mV
C. 5 mm/mV
D. 25 mm/mV



15. The LCD display is an area on the 12-lead ECG machine where the following information
is available to view: A. Patient data/information
B. Information from the ECG computer
C. Status of the electrodes