CET Rhythm Interpretation & Patient Care

Question 1

What is the first step when interpreting a cardiac rhythm strip?

Accepted Answer

Evaluate the heart rate and rhythm

Answer

Analyze the QRS complex

Answer

Check the P wave

Answer

Measure the PR interval

Question 2

Which rhythm is characterized by the absence of P waves and irregularly irregular rhythm?

Accepted Answer

Atrial fibrillation

Answer

Ventricular tachycardia

Answer

Atrial flutter

Answer

Sinus bradycardia

Question 3

What is the normal duration of a QRS complex?

Accepted Answer

0.06 to 0.10 seconds

Answer

0.12 to 0.20 seconds

Answer

0.30 to 0.40 seconds

Answer

Less than 0.04 seconds

Question 4

What rhythm indicates a life-threatening emergency requiring immediate action?

Accepted Answer

Ventricular fibrillation

Answer

Sinus tachycardia

Answer

Atrial flutter

Answer

First-degree AV block

Question 5

What should be done if a patient is found unresponsive with no pulse during ECG monitoring?

Accepted Answer

Start CPR and call for help

Answer

Check the ECG machine

Answer

Administer oxygen only

Answer

Wait for a physician

Question 6

What is a common sign of myocardial infarction on an ECG?

Accepted Answer

ST-segment elevation

Answer

Shortened PR interval

Answer

T wave inversion only

Answer

Prolonged QT interval

Question 7

How does sinus bradycardia typically present on an ECG?

Accepted Answer

Heart rate below 60 bpm with normal rhythm

Answer

Irregular rhythm with absent P waves

Answer

Wide QRS complexes

Answer

Heart rate above 100 bpm

Question 8

What action should be taken if a patient experiences dizziness during an ECG?

Accepted Answer

Assess the patient and notify the provider

Answer

Ignore and complete the ECG

Answer

Stop the test and discharge the patient

Answer

Continue while checking the wires

Question 9

What does a prolonged QT interval on an ECG indicate?

Accepted Answer

Risk of dangerous arrhythmias

Answer

Increased heart rate

Answer

Decreased oxygenation

Answer

Presence of atrial flutter