A patient complains of chills, dizziness, and feeling hot during a blood transfusion. The nurse's most appropriate action is to (place the correct responses in priority order):
(Hint: Write the digits corresponding in the order in which you think they should follow: Example 1,2,4,3)
1.  Check the patient's vital signs.
2.  Stop the blood transfusion.
3.  Slow down the rate of infusion.
4.  Notify the blood bank and the physician or health care provider.​