how long is a patient monitored after a blood transfusion
The blood transfusion will start slowly so healthcare providers can watch for signs of a reaction. Even a small amount of donor blood can cause a reaction. A healthcare provider will stay with you for at least 15 minutes after the transfusion starts. Healthcare providers will check your vital signs at least once every hour. Tell them if you have signs of a reaction, such as pain, nausea, or itching.