CCP Intraoperative Procedures & Patient Monitoring 3

Question 1

During deep hypothermic circulatory arrest (DHCA), the recommended nasopharyngeal temperature target before stopping flow is:

Accepted Answer

15–18°C

Answer

DHCA is typically performed at 15–18°C nasopharyngeal temperature to maximize cerebral protection by minimizing metabolic demand.

Question 2

Which electrolyte abnormality is most commonly associated with the use of cardioplegia solution and requires monitoring during cardiac surgery?

Accepted Answer

Hyperkalemia

Answer

Cardioplegia solutions contain high concentrations of potassium to arrest the heart, and systemic hyperkalemia can result from cardioplegia delivery and washback.

Question 3

Pulsatile perfusion during CPB is theorized to provide benefit primarily by:

Accepted Answer

Improving microcirculatory flow and lymphatic drainage

Answer

Pulsatile flow is thought to better maintain microcirculatory perfusion and lymphatic function compared to non-pulsatile laminar flow.

Question 4

When using alpha-stat pH management during hypothermic CPB, the perfusionist:

Accepted Answer

Reports uncorrected blood gas values measured at 37°C

Answer

Alpha-stat management uses blood gas values measured at 37°C without temperature correction, maintaining electrochemical neutrality of proteins.

Question 5

Which type of venous cannulation provides the best venous drainage for complex cardiac procedures requiring a bloodless operative field?

Accepted Answer

Bicaval cannulation with separate SVC and IVC cannulas

Answer

Bicaval cannulation with separate superior vena cava (SVC) and inferior vena cava (IVC) cannulas with caval snares provides complete caval occlusion for a bloodless right heart field.

(CCP) Certified Clinical Perfusionist Practice Test

(CCP) Certified Clinical Perfusionist Practice Test

CCP Intraoperative Procedures & Patient Monitoring 3