CVT Electrocardiography (ECG/EKG) Techniques 2

Question 1

Which ECG lead is considered the best for detecting P waves in most patients?

Accepted Answer

Lead II

Answer

Lead II is typically best for visualizing P waves because it is oriented parallel to the atrial depolarization vector.

Question 2

A patient's ECG shows a delta wave and short PR interval. Which condition does this suggest?

Accepted Answer

Wolff-Parkinson-White syndrome

Answer

WPW syndrome is characterized by a delta wave (slurred QRS upstroke) and shortened PR interval due to an accessory conduction pathway.

Question 3

What is the standard paper speed used for routine 12-lead ECG recording in the United States?

Accepted Answer

25 mm/sec

Answer

25 mm/sec is the standard paper speed in the US, making each small box represent 0.04 seconds.

Question 4

When recording a 12-lead ECG, electrodes V1 and V2 are placed at which intercostal space?

Accepted Answer

4th intercostal space

Answer

V1 is placed at the 4th intercostal space to the right of the sternum, and V2 is placed at the 4th intercostal space to the left of the sternum.

Question 5

Which artifact on an ECG is most commonly caused by patient muscle tremor or shivering?

Accepted Answer

Somatic tremor artifact

Answer

Somatic tremor artifact appears as irregular, high-frequency oscillations on the baseline caused by involuntary muscle activity.

(CVT) Cardiovascular Technologist Certification Practice Test