CET Emergency Cardiac Monitoring 2

Question 1

During a cardiac emergency, a patient's monitor suddenly shows a flat line with no discernible waveforms. The FIRST step is to:

Accepted Answer

Check lead connections and patient

Answer

A flat line (asystole) must first be confirmed by checking lead connections and the patient, since a loose lead is a common cause of a false flat-line display.

Question 2

Which ECG finding is MOST associated with hyperkalemia in an emergency setting?

Accepted Answer

Tall, peaked T waves

Answer

Tall, peaked (tented) T waves are the earliest and most characteristic ECG sign of hyperkalemia.

Question 3

A patient in the ED develops sudden onset wide-complex tachycardia at 180 bpm with hemodynamic instability. The appropriate intervention is:

Accepted Answer

Synchronized cardioversion

Answer

Hemodynamically unstable wide-complex tachycardia requires immediate synchronized cardioversion regardless of the specific rhythm.

Question 4

ST elevation in leads II, III, and aVF with reciprocal changes in leads I and aVL indicates an infarction of the:

Accepted Answer

Inferior wall

Answer

Leads II, III, and aVF are the inferior leads; ST elevation in these leads with reciprocal changes laterally localizes the STEMI to the inferior wall.

Question 5

In pediatric emergency cardiac monitoring, the normal heart rate range for a 2-year-old child at rest is approximately:

Accepted Answer

80–130 bpm

Answer

Resting heart rate for a 2-year-old is normally 80–130 bpm; rates outside this range may warrant investigation.

(CET) Certified Electrocardiogram Technician Practice Test

(CET) Certified Electrocardiogram Technician Practice Test

CET Emergency Cardiac Monitoring 2