ECG ECG Lead Placement and Equipment 1 — Questions and Answers
Question 1: Where is the V1 precordial lead electrode placed?
- 4th intercostal space, right sternal border (Correct answer)
- 5th intercostal space, left midclavicular line
- 4th intercostal space, left sternal border
- 2nd intercostal space, right sternal border
Correct answer: 4th intercostal space, right sternal border
V1 is placed at the 4th intercostal space along the right sternal border.
Question 2: Which color is the right arm (RA) lead wire in standard US ECG color coding?
- White (Correct answer)
- Black
- Red
- Green
Correct answer: White
In the US AHA color coding system, the right arm lead is white.
Question 3: The V4 precordial lead is placed at which location?
- 5th intercostal space, midclavicular line (Correct answer)
- 4th intercostal space, left sternal border
- 5th intercostal space, anterior axillary line
- 6th intercostal space, midaxillary line
Correct answer: 5th intercostal space, midclavicular line
V4 is placed at the 5th intercostal space at the left midclavicular line.
Question 4: What is the standard paper speed used for ECG recordings in the US?
- 25 mm/sec (Correct answer)
- 50 mm/sec
- 10 mm/sec
- 100 mm/sec
Correct answer: 25 mm/sec
The standard ECG paper speed in the US is 25 mm/sec.
Question 5: Which lead is considered the ground lead in a standard 12-lead ECG setup?
- Right leg (RL) (Correct answer)
- Left leg (LL)
- Left arm (LA)
- V6
Correct answer: Right leg (RL)
The right leg lead serves as the electrical ground in a standard 12-lead ECG.
Question 6: V6 is placed at which anatomical position?
- 5th intercostal space, midaxillary line (Correct answer)
- 5th intercostal space, anterior axillary line
- 4th intercostal space, midaxillary line
- 6th intercostal space, midclavicular line
Correct answer: 5th intercostal space, midaxillary line
V6 is placed at the 5th intercostal space at the left midaxillary line.
ECG ECG Lead Placement and Equipment 1
Where is the V1 precordial lead electrode placed?