MLPAO Test Prep ~ ECG Exam 2026
Questions and Answers
4th intercostal space R sternal border - Correct answer-V1 placement
V1 - Correct answer-4th intercostal space R sternal border
4th intercostal space L sternal border - Correct answer-V2 placement
V2 - Correct answer-4th intercostal space L sternal border
Between leads V2 and V4 - Correct answer-V3 placement
V3 - Correct answer-Between leads V2 and V4
5th L intercostal space in midclavicular line - Correct answer-V4 placement
V4 - Correct answer-5th L intercostal space in midclavicular line
Horizontally even with V4, but in the anterior axillary line - Correct answer-V5
placement
V5 - Correct answer-Horizontally even with V4, but in the anterior axillary line
Horizontally even with V4 and V5 in the midaxillary line - Correct answer-V6
placement
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, V6 - Correct answer-Horizontally even with V4 and V5 in the midaxillary line
I, II, II - Correct answer-Which leads are the Limb Leads?
Bipolar - Correct answer-Limb leads are [UNIPOLAR/BIPOLAR]
Chest Leads - Correct answer-Precordial leads are also called?
V1-6 - Correct answer-Which leads are the precordial leads?
Unipolar = Precordial leads are [UNIPOLAR/BIPOLAR]? - Correct answer-
aVR, aVF, aVL - Correct answer-Which leads are the augmented limb leads?
Unipolar - Correct answer-Augmented Limb Leads are [UNIPOLAR/BIPOLAR]
Back Leads - Correct answer-15 leads includes the regular 12 leads plus what?
Unipolar - Correct answer-Back leads are [UNIPOLAR/BIPOLAR]?
Movement, medical devices, incorrect placement of leads, (electrolyte imbalance,
thickening of heart muscle, fluctuation in body temperature) - Correct answer-
Common sources of artifacts
Dirty/loose electrodes or machine cables (moving during analysis) - Correct
answer-Wandering baseline caused by
Wandering baseline - Correct answer-Dirty/Loose electrodes or machine cables
moving during analysis causes
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Questions and Answers
4th intercostal space R sternal border - Correct answer-V1 placement
V1 - Correct answer-4th intercostal space R sternal border
4th intercostal space L sternal border - Correct answer-V2 placement
V2 - Correct answer-4th intercostal space L sternal border
Between leads V2 and V4 - Correct answer-V3 placement
V3 - Correct answer-Between leads V2 and V4
5th L intercostal space in midclavicular line - Correct answer-V4 placement
V4 - Correct answer-5th L intercostal space in midclavicular line
Horizontally even with V4, but in the anterior axillary line - Correct answer-V5
placement
V5 - Correct answer-Horizontally even with V4, but in the anterior axillary line
Horizontally even with V4 and V5 in the midaxillary line - Correct answer-V6
placement
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, V6 - Correct answer-Horizontally even with V4 and V5 in the midaxillary line
I, II, II - Correct answer-Which leads are the Limb Leads?
Bipolar - Correct answer-Limb leads are [UNIPOLAR/BIPOLAR]
Chest Leads - Correct answer-Precordial leads are also called?
V1-6 - Correct answer-Which leads are the precordial leads?
Unipolar = Precordial leads are [UNIPOLAR/BIPOLAR]? - Correct answer-
aVR, aVF, aVL - Correct answer-Which leads are the augmented limb leads?
Unipolar - Correct answer-Augmented Limb Leads are [UNIPOLAR/BIPOLAR]
Back Leads - Correct answer-15 leads includes the regular 12 leads plus what?
Unipolar - Correct answer-Back leads are [UNIPOLAR/BIPOLAR]?
Movement, medical devices, incorrect placement of leads, (electrolyte imbalance,
thickening of heart muscle, fluctuation in body temperature) - Correct answer-
Common sources of artifacts
Dirty/loose electrodes or machine cables (moving during analysis) - Correct
answer-Wandering baseline caused by
Wandering baseline - Correct answer-Dirty/Loose electrodes or machine cables
moving during analysis causes
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