PEARS Pediatric Dysrhythmia Recognition 2

Question 1

What is the most common cause of bradycardia in infants and young children?

Accepted Answer

Hypoxia

Answer

Complete heart block

Answer

Beta-blocker toxicity

Answer

Sick sinus syndrome

Question 2

Which ECG pattern is associated with Wolff-Parkinson-White (WPW) syndrome?

Accepted Answer

Delta wave with a shortened PR interval

Answer

Prolonged QT interval with wide T waves

Answer

Right bundle branch block with ST changes

Answer

Peaked T waves with a wide QRS

Question 3

A child is in cardiac arrest with ventricular fibrillation. What energy dose is used for the first defibrillation?

Accepted Answer

2 J/kg

Answer

0.5 J/kg

Answer

4 J/kg

Answer

10 J/kg

Question 4

Which rhythm is characterized by absent P waves, narrow QRS complexes, and a rate of 40-60 bpm?

Accepted Answer

Junctional escape rhythm

Answer

Sinus bradycardia

Answer

First-degree AV block

Answer

Idioventricular rhythm

Question 5

In third-degree (complete) AV block, what is the relationship between P waves and QRS complexes?

Accepted Answer

P waves and QRS complexes are completely independent with no consistent relationship

Answer

Each P wave is followed by a progressively longer PR interval until a QRS is dropped

Answer

Every other P wave is conducted with a normal PR interval

Answer

P waves are absent but QRS complexes occur regularly

Question 6

What is the most common cause of sinus tachycardia in a child?

Accepted Answer

Fever, pain, anxiety, or hypovolemia

Answer

Re-entrant electrical pathway in the AV node

Answer

Digitalis toxicity

Answer

Congenital accessory conduction pathway

Question 7

What is the first-line drug for stable SVT in a child when vagal maneuvers have failed?

Accepted Answer

Adenosine

Answer

Amiodarone

Answer

Lidocaine

Answer

Epinephrine