Blood Product Types and Indications
Understanding different blood products and their clinical applications is fundamental to transfusion nursing. Each product serves a specific purpose and requires different storage and handling.
Common Blood Products
Packed red blood cells (PRBCs) are the most commonly transfused product. Use them for anemia and significant blood loss when hemoglobin falls below 7 g/dL in stable patients or 9 g/dL in symptomatic patients. PRBCs can be stored for 35-42 days.
Fresh frozen plasma (FFP) contains all clotting factors and treats coagulopathy and bleeding disorders. Platelets address thrombocytopenia or platelet dysfunction causing bleeding. Cryoprecipitate provides fibrinogen, factor VIII, von Willebrand factor, and fibronectin. It's used for massive transfusions and fibrinogen replacement.
Storage and Shelf Life Considerations
PRBCs last 35-42 days in refrigeration. Platelets must be used within 5-7 days. Whole blood, containing red cells, plasma, platelets, and clotting factors, is rarely used today.
Understand that transfusion is not the default intervention for every anemia. It's a carefully considered therapeutic option with inherent risks including infection transmission, immune reactions, and fluid overload. Learning each product's indications through spaced repetition helps you quickly recall appropriate interventions during clinical decision-making.
Blood Typing, Crossmatching, and Compatibility
Blood typing and compatibility testing are critical safety barriers that prevent hemolytic transfusion reactions. These procedures ensure the right blood reaches the right patient.
ABO and Rh Systems
The ABO blood group system classifies blood into four types based on antigens on red blood cells:
- Type A
- Type B
- Type AB
- Type O
Type O-negative is the universal donor because it lacks A, B, and Rh antigens. Type AB-positive is the universal recipient, accepting any blood type. The Rh factor (positive or negative) is another critical antigen. Rh-negative patients should receive Rh-negative products to prevent sensitization.
Testing Procedures
Type and screen identifies the patient's blood type and screens for unexpected antibodies. Type and crossmatch is the complete compatibility test. It involves mixing the patient's serum with donor red cells to detect incompatibilities before transfusion.
In massive transfusion protocols, type O-negative blood may be given before crossmatch results are available. Nurses must verify blood type using two independent patient identifiers and confirm compatibility labels match the patient's wristband. This verification occurs at the bedside immediately before infusion, typically performed by two nurses. Understanding these systems prevents fatal transfusion reactions.
Pre-Transfusion Assessment and Verification
Pre-transfusion assessment and verification procedures prevent the majority of serious adverse events. These systematic checks are the most critical aspects of transfusion nursing.
Initial Assessment Steps
Begin by confirming the order and verifying the patient's identity using two identifiers. Ensure informed consent has been obtained. Assess baseline vital signs, temperature, and relevant laboratory values including hemoglobin, hematocrit, coagulation studies, and platelet count.
Establish intravenous access using at least 18-gauge cannula for rapid infusion if needed. Smaller gauges may cause hemolysis and slow infusion rates. Never use dextrose solutions, normal saline greater than 0.9%, or hypotonic solutions as they cause hemolysis.
Bedside Verification Procedure
The most critical verification occurs at the bedside where two nurses independently verify that the blood product label matches the patient's identification band. Check patient name, medical record number, and blood type. Confirm the unit number on the product matches the transfusion order.
Inspect the product for discoloration, cloudiness, clots, or leakage indicating contamination or hemolysis. Verify the expiration date and time, storage conditions, and compatibility label. This systematic approach prevents serious errors that could result in transfusion reactions or patient death. Flashcards help encode these verification steps as automatic routines performed consistently regardless of clinical pressure.
Transfusion Reaction Recognition and Management
Transfusion reactions range from mild to life-threatening and require rapid recognition and intervention. Each reaction type presents with specific signs and requires different management.
Types of Transfusion Reactions
Acute hemolytic reactions occur when incompatible blood is transfused. Antibodies destroy red cells within hours. Signs include fever, chills, chest or back pain, hemoglobinuria (dark urine), hypotension, tachycardia, and renal failure.
Febrile non-hemolytic reactions cause fever and chills without hemolysis, usually from white cell or platelet antigens. Allergic reactions present as urticaria, pruritus, and angioedema. Anaphylactic reactions are severe, presenting with respiratory distress, hypotension, and cardiovascular collapse.
Transfusion-related acute lung injury (TRALI) manifests within 6 hours with acute respiratory distress, hypoxemia, bilateral infiltrates on imaging, and hypotension. Circulatory overload presents as dyspnea, hypertension, tachycardia, and pulmonary edema in patients transfused too rapidly or with excessive volume.
Immediate Management
Immediately stop the transfusion and verify patient identity and blood product compatibility. Maintain IV access with normal saline. Notify the physician immediately. Monitor vital signs closely and assess symptoms.
For fever, administer acetaminophen and monitor for hemolysis. For allergic reactions, give antihistamines and observe. For anaphylaxis, administer epinephrine and manage airway. For suspected hemolytic reactions, obtain labs including blood cultures, urinalysis, direct antiglobulin test, and coagulation studies. Document all observations and interventions. Knowing these reactions and their management is lifesaving knowledge.
Documentation, Safety Protocols, and Special Considerations
Comprehensive documentation and adherence to safety protocols protect patients and ensure legal compliance. Documentation must be complete and accurate for every transfusion.
Documentation Requirements
Document the indication for transfusion, informed consent, baseline vital signs, blood product type and unit number, time transfusion started and completed, infusion rate, transfusion volume, and patient identification verification. Include any adverse reactions, post-transfusion vital signs, and patient response. Document the names of nurses verifying compatibility.
Never discard blood product labels before documentation is complete. Report any transfusion reactions to the blood bank, physician, and infection control immediately.
Special Situations and Populations
Massive transfusion protocols activate in trauma patients losing significant blood volume. Use predetermined ratios of PRBCs, FFP, and platelets (often 1:1:1) to prevent coagulopathy from aggressive crystalloid resuscitation.
Jehovah's Witnesses refuse blood products on religious grounds. Offer alternatives including volume expanders, medications to boost red cell production, and cell salvage techniques.
Patients with specific antibodies identified during screening require antigen-negative products. Transfusion-dependent patients with chronic conditions like thalassemia require iron chelation therapy. Pediatric patients have weight-based dosing of 10-15 mL/kg for children. Understanding these protocols ensures safe, culturally sensitive, and legally appropriate transfusion nursing across diverse clinical scenarios.