ECG Basic Electrocardiogram 4

Question 1

Which lead views the heart from the left arm to the left leg?

Accepted Answer

Lead III

Answer

Lead III measures the electrical difference between the left arm and left leg electrodes.

Question 2

A rhythm that is regular with a rate over 100 bpm originating from the SA node is called:

Accepted Answer

Sinus tachycardia

Answer

Sinus tachycardia is a normal-appearing rhythm from the SA node exceeding 100 bpm.

Question 3

In lead placement, the V6 electrode is positioned at the:

Accepted Answer

Midaxillary line at the same level as V4

Answer

V6 sits in the midaxillary line, horizontally in line with V4 and V5.

Question 4

Which of the following is an augmented (unipolar) limb lead?

Accepted Answer

aVF

Answer

aVF, along with aVR and aVL, are the augmented unipolar limb leads.

Question 5

If a patient has a tremor, the resulting ECG artifact is best described as:

Accepted Answer

Somatic (muscle) tremor artifact

Answer

Involuntary muscle activity from tremor creates a somatic tremor artifact on the tracing.

ECG (Electrocardiogram) Practice Test