How Severe is Severe Enough? Organ Failure Rather Than Anemia Severity as a Potential Threshold for Complement Inhibition in Pediatric Paroxysmal Cold Hemoglobinuria: A Case Report
Colburn Yu, Zachary Rane, Elena Nedelcu, Alison Matsunaga · 2026
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Description
Colburn Yu and colleagues reported a toddler case in 2026. A boy under two years developed a rare anemia. Paroxysmal cold hemoglobinuria destroys red cells after viral illness. The condition usually resolves on its own with time. His blood counts fell to extremely low levels. Lab tests showed very strong complement activation too. Only two earlier children had received a complement blocker. Both of those children had organ failure present. No rule defines when the blocker is warranted. The team chose to defer the expensive drug.
The boy stayed stable despite severe lab values. His kidneys worked and blood pressure held steady. Warmed transfusions and protection from cold supported recovery. He recovered without dialysis or intensive support drugs. The authors argue organ failure should trigger escalation. Lab severity alone may mislead treatment decisions. Watchful supportive care succeeded in this severe case.
Catalog record
| CREATOR | Colburn Yu, Zachary Rane, Elena Nedelcu, Alison Matsunaga |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 16 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |