Treatment for hemochromatosis typically involves removing a unit of blood twice-weekly by phlebotomy.
Was it the bicarbonate or the cessation of C.P.R.? Was it that last unit of blood?
For now, the new test will add $4.40 to the cost of a unit of blood, Dr. Stramer said.
Some fear that the new technology could cost as much as $100 per unit of blood.
One woman (0.7%) received a single unit of blood after surgery, whereas two women had postoperative ileus.
The unit of blood of the issue being composed of the half of that of each parent, will be a/2 + A/2.
A unit of blood, about a pint, contains more than one trillion cells, said Dr. Dan S. Kaufman, associate professor at the University of Minnesota.
The estimated H.I.V. risk from a unit of blood is about one per two million in the United States, according to the agency.
"If you're getting one unit of blood," Dr. Bennett-Guerrero said, "it probably doesn't matter much whether it's older or fresher.
Normal red blood cells are fairly uniform in volume, so that the hematocrit value is determined largely by the number of red cells per unit of blood.
Dr. Vincent Kawooya, the hospital's medical superintendent, said there was only one small unit of blood for a child in stock that night.
