CVP Patient Safety and Equipment — Questions and Answers
Question 1: What is the most critical safety check before initiating cardiopulmonary bypass?
- Verifying adequate anticoagulation (ACT) and ensuring the circuit is properly assembled and de-aired (Correct answer)
- Checking the room temperature
- Verifying the surgeons schedule
- Confirming insurance coverage
Correct answer: Verifying adequate anticoagulation (ACT) and ensuring the circuit is properly assembled and de-aired
Before initiating bypass, confirming adequate anticoagulation and a properly assembled, air-free circuit is essential to prevent catastrophic complications.
Question 2: What is the primary risk of inadequate de-airing of the bypass circuit?
- Air embolism to the patient causing stroke or organ damage (Correct answer)
- Equipment malfunction
- Blood contamination
- Excessive bleeding
Correct answer: Air embolism to the patient causing stroke or organ damage
Air remaining in the circuit can be pumped into the patients arterial system causing air embolism, potentially resulting in stroke or organ damage.
Question 3: What should a perfusionist do if the oxygenator fails during bypass?
- Immediately switch to a backup oxygenator while maintaining circulation (Correct answer)
- Stop the bypass machine completely
- Wait for the oxygenator to recover
- Increase the flow rate to compensate
Correct answer: Immediately switch to a backup oxygenator while maintaining circulation
A backup oxygenator should always be available. If the primary oxygenator fails, switching to the backup while maintaining circulation is critical to patient survival.
Question 4: What is the purpose of the level detector on the venous reservoir?
- To alarm when blood level drops dangerously low, preventing air from entering the pump (Correct answer)
- To measure the total blood volume
- To monitor drug concentrations
- To detect blood clots
Correct answer: To alarm when blood level drops dangerously low, preventing air from entering the pump
The level detector prevents the catastrophic event of pumping air by alerting when the reservoir level drops below a safe threshold.
Question 5: What is the significance of checking for hemolysis during bypass?
- Elevated free hemoglobin indicates red blood cell destruction that can cause kidney damage (Correct answer)
- Hemolysis is always beneficial
- It indicates adequate anticoagulation
- It shows the oxygenator is working properly
Correct answer: Elevated free hemoglobin indicates red blood cell destruction that can cause kidney damage
Hemolysis (destruction of red blood cells) releases free hemoglobin which can damage the kidneys. Monitoring helps detect equipment malfunction or excessive shear forces.
Question 6: What records must a perfusionist maintain during bypass?
- Comprehensive records of all pump parameters, medications, blood gases, and events throughout the procedure (Correct answer)
- Only the start and stop times
- Just the surgeons name and date
- No records are required during bypass
Correct answer: Comprehensive records of all pump parameters, medications, blood gases, and events throughout the procedure
Detailed documentation of all bypass parameters, interventions, and events is essential for patient safety, quality assurance, and legal requirements.
CVP Patient Safety and Equipment
What is the most critical safety check before initiating cardiopulmonary bypass?