Fifty-One Hours
He was III.
The treatment is therapeutic hypothermia.
You cool the baby to about 33.5 degrees for seventy-two hours, which slows the secondary cascade of injury that happens in the hours and days after the initial event.
It is one of the genuine successes of modern neonatology.
It works.
It does not work for everybody.
For grade III, the published outcomes are hard reading.
Cooling improves them substantially and they remain, in the honest phrasing of the literature, poor.