The reinfusion of a patient's own blood or blood products that have been previously removed or collected.
From 'auto-' (self), 're-' (again), and 'infusion' (from Latin 'infundere' meaning to pour in). Modern medical term from blood transfusion advances.
Autoreinfusion is a surgeon's trick during major bleeding—they collect your blood as you lose it, filter it, and put it right back. No need for donor blood; you become your own transfusion source.
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