PALS Cardiac Arrest 4

Question 1

Which intraosseous (IO) site is generally preferred for rapid vascular access in a child in cardiac arrest?

Accepted Answer

Proximal tibia

Answer

The proximal tibia is the preferred IO site in children due to ease of access and large marrow cavity.

Question 2

A child arrests due to suspected tension pneumothorax (T cause). What is the immediate intervention?

Accepted Answer

Needle thoracostomy

Answer

Needle thoracostomy (decompression) at the 2nd intercostal space mid-clavicular line relieves tension pneumothorax.

Question 3

Lidocaine is an alternative antiarrhythmic to amiodarone in pediatric cardiac arrest. What is its IV/IO dose?

Accepted Answer

1 mg/kg

Answer

Lidocaine 1 mg/kg IV/IO is the PALS dose for shock-refractory VF/pVT when amiodarone is unavailable.

Question 4

After ROSC is achieved in a pediatric cardiac arrest patient, what SpO2 target should be maintained to avoid hyperoxia?

Accepted Answer

94-99%

Answer

Post-ROSC, titrate oxygen to maintain SpO2 94-99% to avoid both hypoxia and harmful hyperoxia.

Question 5

Which finding on waveform capnography (EtCO2) during CPR suggests effective compressions and possible ROSC?

Accepted Answer

Sudden rise in EtCO2 to > 40 mmHg

Answer

A sudden increase in EtCO2 above 40 mmHg during CPR indicates ROSC due to restored pulmonary blood flow.

PALS - Pediatric Advanced Life Support Practice Test