PEARS Pediatric Dysrhythmia Recognition 2

Question 1

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

Accepted Answer

Hypoxia

Answer

Hypoxia is the most common cause of bradycardia in infants and young children; treating the hypoxia typically resolves the bradycardia.

Question 2

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

Accepted Answer

Delta wave with a shortened PR interval

Answer

WPW syndrome is identified by a delta wave (slurred QRS upstroke) and shortened PR interval caused by an accessory conduction pathway that pre-excites the ventricles.

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

The initial defibrillation dose for children with VF or pulseless VT is 2 J/kg, with escalation to 4 J/kg for subsequent shocks.

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

A junctional escape rhythm occurs when the AV node acts as pacemaker, producing narrow QRS complexes at 40-60 bpm with absent or retrograde P waves.

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

In complete AV block, the atria and ventricles beat independently—there is no consistent PR relationship between P waves and QRS complexes.

(PEARS) Pediatric Emergency Assessment, Recognition, and Stabilization Practice Test

(PEARS) Pediatric Emergency Assessment, Recognition, and Stabilization Practice Test

PEARS Pediatric Dysrhythmia Recognition 2