ECG Online Electrocardiogram 2

Question 1

How many electrodes are placed on the body to record a standard 12-lead ECG?

Accepted Answer

10

Answer

6

Answer

12

Answer

15

Question 2

Which chest lead is placed at the fourth intercostal space to the right of the sternum?

Accepted Answer

V1

Answer

V2

Answer

V4

Answer

V6

Question 3

What does the P wave on an ECG represent?

Accepted Answer

Atrial depolarization

Answer

Ventricular depolarization

Answer

Ventricular repolarization

Answer

Bundle branch conduction

Question 4

The standard paper speed for recording an ECG is:

Accepted Answer

25 mm/sec

Answer

10 mm/sec

Answer

50 mm/sec

Answer

100 mm/sec

Question 5

Which limb electrode is typically used as the ground (reference) electrode?

Accepted Answer

Right leg

Answer

Right arm

Answer

Left arm

Answer

Left leg

Question 6

A normal adult resting heart rate falls within which range?

Accepted Answer

60-100 bpm

Answer

30-50 bpm

Answer

100-140 bpm

Answer

140-180 bpm

Question 7

Wandering baseline artifact on an ECG tracing is most often caused by:

Accepted Answer

Patient movement or respiration

Answer

Correct electrode placement

Answer

High paper speed

Answer

A fully charged machine