CCTC Waitlist Management and Allocation 4 — Questions and Answers
Question 1: A liver candidate's MELD-Na score is 32. Which laboratory value is incorporated in MELD-Na that is NOT in the standard MELD?
- Serum sodium (Correct answer)
- Serum albumin
- Platelet count
- Prothrombin time
Correct answer: Serum sodium
MELD-Na adds serum sodium to the standard MELD (bilirubin, INR, creatinine) because hyponatremia independently predicts 90-day waitlist mortality in cirrhotic patients.
Question 2: When a transplant program's outcomes fall below acceptable thresholds, which regulatory body may require an action plan affecting waitlist practices?
- MPSC (Membership and Professional Standards Committee) of OPTN (Correct answer)
- CMS alone through Conditions of Participation review
- State health department with jurisdiction over transplant licensing
- The transplant program's IRB
Correct answer: MPSC (Membership and Professional Standards Committee) of OPTN
OPTN's MPSC reviews member performance data and can require corrective action plans from programs with substandard outcomes, affecting listing and allocation practices.
Question 3: A coordinator is reviewing a heart allocation match run. The donor is 16 years old. Which candidates receive priority consideration?
- Pediatric candidates (under 18) receive first priority within compatible blood type and size (Correct answer)
- All candidates are ranked purely by medical urgency status without age consideration
- Candidates within 250 nautical miles regardless of age
- Adult Status 1A candidates are always prioritized over pediatric candidates
Correct answer: Pediatric candidates (under 18) receive first priority within compatible blood type and size
OPTN heart allocation policy gives pediatric candidates priority for pediatric donor hearts within compatible blood type and hemodynamic size matching criteria.
Question 4: Under the continuous distribution framework being implemented by OPTN, how will organ allocation fundamentally change?
- A composite score will replace tiered geographic and status-based priority systems (Correct answer)
- Allocation will be determined entirely by waiting time without clinical factors
- Each organ type will have its own independent governing committee
- Donor hospitals will rank candidates directly rather than using a central system
Correct answer: A composite score will replace tiered geographic and status-based priority systems
Continuous distribution uses a single composite score incorporating medical urgency, candidate biology, transplant benefit, and logistics to rank all candidates on one continuous list.
Question 5: A kidney transplant candidate has a calculated panel reactive antibody (CPRA) of 99%. What waitlist accommodation does OPTN policy provide?
- Points-based priority in the allocation sequence to improve access (Correct answer)
- Automatic listing at the top of the national kidney waitlist
- Mandatory living-donor evaluation before deceased-donor offers
- Reduced waiting time requirements compared to unsensitized candidates
Correct answer: Points-based priority in the allocation sequence to improve access
Highly sensitized candidates with CPRA ≥98% receive additional allocation points under KAS to compensate for the extremely limited compatible donor pool.
Question 6: A patient has been on the liver waitlist for 18 months and now develops stage II HCC within Milan criteria. When can exception MELD points be applied?
- After a 6-month observation period confirming stable or responsive disease (Correct answer)
- Immediately upon HCC diagnosis with imaging documentation
- Only after the tumor progresses beyond Milan criteria
- After the patient completes locoregional therapy
Correct answer: After a 6-month observation period confirming stable or responsive disease
Current OPTN policy requires a mandatory 6-month delay from HCC diagnosis before exception MELD points are granted, to observe tumor biology and reduce transplant for aggressive disease.
Question 7: A living-donor kidney transplant is being planned for a waitlisted candidate. What happens to the candidate's waitlist time upon living-donor transplant?
- Wait time is preserved and can be used if the living-donor transplant fails and re-listing occurs (Correct answer)
- Wait time is permanently forfeited upon acceptance of the living-donor organ
- Wait time resets to zero regardless of prior waiting period
- Wait time transfers to a family member who needs transplant
Correct answer: Wait time is preserved and can be used if the living-donor transplant fails and re-listing occurs
OPTN policy allows candidates to retain accrued waitlist time, so if a living-donor kidney fails and they must return to the waitlist, prior wait time can be credited.
CCTC Waitlist Management and Allocation 4
A liver candidate's MELD-Na score is 32.
Which laboratory value is incorporated in MELD-Na that is NOT in the standard MELD?