AP BIOLOGY

Detailed explanation-1: -Patients should be directly observed during the first 15 minutes of transfusion as some life-threatening reactions may occur after the infusion of only a small amount of blood.

Detailed explanation-2: -Frequent visual observations during transfusion are essential to identify signs of reactions or adverse events. The patient must be observed closely for the first 15 minutes of each pack and at least hourly throughout the transfusion.

Detailed explanation-3: -A nurse will remain with you for at least the first 15 minutes of the transfusion. This is because most reactions with blood transfusions, if they happen, occur immediately.

Detailed explanation-4: -Transfuse slowly for the first 15 minutes, where possible. May be increased if well tolerated with no adverse reaction for the first 15 minutes. One unit usually takes 30 minutes–2 hours to infuse.