CTP Organ Recovery & Procurement Logistics 2 — Questions and Answers
Question 1: What is the primary purpose of the surgical 'time-out' procedure immediately before organ recovery surgery?
- To allow the surgical team to rest before a lengthy procedure
- To verify donor identity, consent documentation, and planned recovery procedures (Correct answer)
- To confirm that preservation equipment is functioning
- To calculate expected total ischemia time
Correct answer: To verify donor identity, consent documentation, and planned recovery procedures
The surgical time-out is a universal safety protocol used to confirm donor identity, consent, and the intended procedure before incision.
Question 2: When multiple organs are procured from a single donor, which organs are typically recovered first?
- Kidneys first, then liver, then heart
- Thoracic organs (heart and lungs) first, then abdominal organs (Correct answer)
- Abdominal organs first, then thoracic organs
- All organs are removed simultaneously by separate teams
Correct answer: Thoracic organs (heart and lungs) first, then abdominal organs
Thoracic organs are recovered first because the heart and lungs have the shortest tolerance for ischemia and must be transplanted most urgently.
Question 3: What is the optimal storage temperature range for organs during transport?
- 0–2°C
- 2–4°C (ice-slush range) (Correct answer)
- 10–15°C
- 20–25°C (room temperature)
Correct answer: 2–4°C (ice-slush range)
Organs are stored at 2–4°C in ice slush to significantly slow cellular metabolism and reduce ischemic damage without causing ice crystal injury from freezing.
Question 4: In organ procurement, what is the purpose of the 'flush-out' technique?
- Rinsing surgical instruments before the procedure
- Infusing cold preservation solution through the organ's vasculature to remove blood and lower temperature (Correct answer)
- Cleaning the donor's body cavity after recovery
- Testing organ function after removal
Correct answer: Infusing cold preservation solution through the organ's vasculature to remove blood and lower temperature
The flush-out delivers cold preservation solution through the vascular tree to displace blood, rapidly cool the organ, and begin preservation before removal.
Question 5: During abdominal organ procurement, which vessel is most commonly cannulated for in-situ flushing?
- Superior vena cava
- Aorta (Correct answer)
- Pulmonary artery
- Portal vein exclusively
Correct answer: Aorta
The aorta is cannulated for in-situ flushing to deliver cold preservation solution to all abdominal organs simultaneously through their arterial supply.
Question 6: Why is 'warm ischemia time' considered the most damaging type of ischemia in organ procurement?
- It refers to time spent above freezing but below body temperature
- It is the period between circulatory arrest and organ cooling, when metabolic damage accumulates most rapidly (Correct answer)
- It describes time spent in normothermic machine perfusion
- It measures time at room temperature during packaging
Correct answer: It is the period between circulatory arrest and organ cooling, when metabolic damage accumulates most rapidly
Warm ischemia time, from cessation of circulation to the start of cooling, causes the most rapid metabolic injury because cellular metabolism continues without oxygen delivery.
Question 7: What is the standard packaging method for organs during transport to maintain both sterility and temperature?
- Single sterile bag placed in a foam cooler
- Triple-bagged in sterile preservation solution, placed in ice in a transport cooler (Correct answer)
- Vacuum-sealed plastic wrap in a refrigerated case
- Single bag immersed in warm saline in an insulated container
Correct answer: Triple-bagged in sterile preservation solution, placed in ice in a transport cooler
Triple-bagging in sterile preservation solution with ice in a transport cooler provides layered sterility protection and maintains the required 2–4°C temperature range.
CTP Organ Recovery & Procurement Logistics 2
What is the primary purpose of the surgical 'time-out' procedure immediately before organ recovery surgery?