1PHARMACOLOGY ATI RN PROCTORED EXAM1. Nurse has just received a bag of packed red blood cells (RBCs) for a patient. What is the longest time the nurse can let the blood infuse?a. 30 minutesb. 2 hoursc. 4 hoursd. 6 hoursANS: CIdeally a unit of whole blood or packed RBCs is transfused in 2 hours. This time can be lengthened to 4 hours if the patient is at risk for extracellular volume excess. Beyond 4 hours there is a risk for bacterial contamination of the blood.1. patient has an acute intravascular hemolytic reaction to a blood transfusion.After discontinuing the blood transfusion, which is the nurses next action?a. Discontinue the IV catheter.b. Return the blood to the blood bank.c. Run normal saline through the existing tubing.d. Start normal saline at TKO rate using new tubing.ANS: DThe nurse should first attach new tubing and begin running in normal saline at arate to keep the vein open, in case any medications need to be delivered throughan IV site. The existing tubing should not be used becausethat would infuse the blood in the tubing into the patient. It is necessary to preserve the IV catheter in place for IV access to treat the patient. After