CCP Neonatal & Pediatric Perfusion 2

Question 1

What is the recommended prime volume to blood volume ratio to avoid excessive hemodilution in neonates weighing less than 5 kg?

Accepted Answer

Less than 100%

Answer

In neonates, the circuit prime volume should ideally be less than the patient's blood volume (less than 100%) to minimize hemodilution and avoid severe anemia.

Question 2

During neonatal CPB, which acid-base management strategy is typically preferred to optimize cerebral autoregulation?

Accepted Answer

pH-stat

Answer

pH-stat management is preferred in neonates because it promotes cerebral vasodilation and better oxygen delivery during deep hypothermic conditions.

Question 3

A neonate on CPB develops a sudden increase in venous line pressure and decreased venous return. The most likely cause is:

Accepted Answer

Superior vena cava obstruction

Answer

SVC obstruction, often from cannula malposition or kinking, causes increased venous line pressure with decreased venous return in neonates.

Question 4

What is the primary purpose of using a modified ultrafiltration (MUF) technique after neonatal cardiac surgery?

Accepted Answer

Remove excess fluid and inflammatory mediators

Answer

MUF concentrates the blood after bypass, removing excess fluid and inflammatory cytokines accumulated during CPB, improving cardiac and pulmonary function.

Question 5

In a 3 kg neonate undergoing deep hypothermic circulatory arrest (DHCA), the typical cooling target temperature before arrest is:

Accepted Answer

15–18°C nasopharyngeal

Answer

DHCA in neonates requires cooling to 15–18°C nasopharyngeal temperature to maximize cerebral protection during the arrest period.

(CCP) Certified Clinical Perfusionist Practice Test

(CCP) Certified Clinical Perfusionist Practice Test

CCP Neonatal & Pediatric Perfusion 2