Vox sanguinis
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While blood is flowing within a transfusion-warming device, the blood temperature is usually less than that applied externally. If the flow is temporarily stopped, the temperature can rise above 37 degrees C in some warming devices. We sought to determine whether temperatures near 45 degrees C achieved during prolonged non-flow conditions in a blood warmer are harmful to red cell integrity. ⋯ We conclude that elevated temperatures achieved during temporary cessation of flow in the Augustine Medical, Inc., 241 Fluid Warming Set for as long as 30 min do not cause notable hemolysis or other damage to red cells.