CET CET Patient Preparation & Safety 2

Question 1

When should the technician verify patient identity before performing an ECG?

Accepted Answer

Always, using at least two patient identifiers before beginning

Answer

Two-identifier verification is a standard safety protocol that prevents errors in patient identification.

Question 2

Why is room temperature important during ECG recording?

Accepted Answer

A comfortable temperature around 68–75°F reduces patient shivering and artifact

Answer

A comfortable room temperature prevents patient shivering, which produces muscle tremor artifact on the ECG tracing.

Question 3

What is the purpose of using pre-gelled or conductive-gel electrodes during ECG recording?

Accepted Answer

To reduce electrical impedance between the electrode and the skin surface

Answer

Conductive gel improves electrical contact by reducing impedance, which minimizes signal noise and improves waveform clarity.

Question 4

How should a technician respond if a patient becomes anxious or distressed during an ECG?

Accepted Answer

Pause the procedure, reassure the patient, and address their concerns

Answer

Patient comfort and safety take priority, and anxiety also causes muscle artifact that degrades tracing quality.

Question 5

Which patient instruction is most important for obtaining an artifact-free resting ECG?

Accepted Answer

Relax, breathe normally, and avoid talking or moving during recording

Answer

Normal quiet breathing and stillness minimize respiratory and motion artifact throughout the recording.

(CET) Certified Electrocardiogram Technician Practice Test