CET CET ECG Reporting & Documentation 2

Question 1

Which ECG interval measures the combined duration of ventricular depolarization and repolarization?

Accepted Answer

QT interval from QRS onset to the end of the T wave

Answer

The QT interval spans from the start of the QRS to the end of the T wave, encompassing total ventricular electrical activity.

Question 2

Why is documenting a patient's current medications on the ECG requisition clinically important?

Accepted Answer

Medications such as antiarrhythmics and digoxin can alter rate, intervals, and waveform morphology

Answer

Many cardiac and non-cardiac drugs alter heart rate, conduction intervals, and waveform morphology in ways that affect interpretation.

Question 3

What does a delta wave on an ECG indicate?

Accepted Answer

Pre-excitation pattern associated with Wolff-Parkinson-White syndrome

Answer

A delta wave is a slurred initial upstroke on the QRS caused by accessory pathway conduction in WPW syndrome.

Question 4

Which ECG finding requires the technician to immediately notify clinical staff?

Accepted Answer

Ventricular fibrillation on the monitor

Answer

Ventricular fibrillation is a life-threatening arrhythmia requiring immediate emergency response from clinical staff.

Question 5

What does the term 'axis deviation' refer to in ECG documentation?

Accepted Answer

The mean direction of ventricular depolarization in the frontal plane

Answer

Axis deviation reflects an abnormal direction of the heart's electrical activation, often indicating hypertrophy or conduction abnormalities.

(CET) Certified Electrocardiogram Technician Practice Test