ECG ECG in Clinical Practice 5

Question 1

A chaotic, disorganized waveform with no identifiable QRS complexes in a pulseless patient indicates what?

Accepted Answer

Ventricular fibrillation

Answer

Atrial fibrillation

Answer

First-degree AV block

Answer

Sinus rhythm

Question 2

For an accurate ECG on a female patient, where are the chest electrodes placed relative to breast tissue?

Accepted Answer

Under the breast on the chest wall

Answer

On top of the breast tissue

Answer

Above the clavicle

Answer

On the abdomen

Question 3

What does a prolonged QT interval increase the risk of?

Accepted Answer

Torsades de pointes

Answer

First-degree AV block

Answer

Sinus bradycardia

Answer

Atrial flutter

Question 4

Which leads are considered the lateral leads on a 12-lead ECG?

Accepted Answer

I, aVL, V5, and V6

Answer

II, III, and aVF

Answer

V1 and V2

Answer

aVR only

Question 5

A technician records an ECG and finds the calibration signal is only 5 mm tall instead of 10 mm. What does this indicate?

Accepted Answer

The gain is set to half standard

Answer

The paper speed is doubled

Answer

The leads are reversed

Answer

The patient is bradycardic

Question 6

What is the recommended action if a technician cannot identify a life-threatening rhythm during acquisition?

Accepted Answer

Notify a licensed clinician immediately

Answer

Erase the tracing and restart

Answer

Wait until the shift ends to report

Answer

Adjust the diagnosis independently

Question 7

Which of the following is a common cause of poor electrode adhesion leading to artifact?

Accepted Answer

Diaphoretic (sweaty) or oily skin

Answer

Slow heart rate

Answer

High paper speed

Answer

Normal sinus rhythm