4 Transfusion Reactions and Emergency Nursing Interventions

Recognize acute and delayed transfusion reactions, take immediate safety-focused nursing actions, and support appropriate investigation and documentation.

Recognizing possible reactions

A transfusion reaction may begin during a transfusion or appear later. New fever or chills, breathing difficulty, rash, swelling, pain, hypotension, tachycardia, nausea, dark urine, or sudden deterioration should prompt immediate assessment. These symptoms can have several causes, so do not assume a reaction is mild before serious causes have been considered.

Patterns that raise concern

may include fever, rigors, back or flank pain, chest pain, hypotension, hemoglobinuria, or bleeding. may cause airway swelling, wheezing, or circulatory collapse. Fever and rigors may also signal and sepsis.

and transfusion-related acute lung injury (TRALI) can both present with acute respiratory distress. The described symptoms alone do not establish which reaction is occurring; assessment and clinical review are needed.

Responding to an acute reaction

When an acute reaction is suspected, stop the transfusion immediately and assess the patient. Do not wait to see whether symptoms resolve before taking these initial safety steps.

  1. Stop the transfusion. Do not restart it unless the responsible clinician and transfusion service determine that restarting is appropriate under local policy. Do not restart after a suspected severe reaction.

  2. Assess airway, breathing, and circulation (ABC). Call for urgent medical help or activate the rapid-response or emergency system for breathing difficulty, hypotension, collapse, altered mental status, or other severe symptoms. Provide emergency support within nursing scope and local protocol.

  3. Maintain IV access without flushing the existing transfusion line. If needed, use new tubing and an appropriate compatible fluid through a separate line, following local policy.

  4. Recheck patient and product identification against the order, wristband, compatibility label, and documentation. Inspect the component for clots, discoloration, or cloudiness, but do not let this inspection delay emergency care.

  5. Notify the responsible clinician and transfusion service or blood bank promptly. Report the symptoms, onset time, vital signs, product, and actions taken.

Monitoring and investigation

Continue monitoring and assist with the investigation. Repeat and document vital signs, oxygen saturation, respiratory status, and other relevant observations. Collect blood or urine specimens and return the component and administration set only as directed by local procedure and the transfusion service.

If is suspected, preserve the component for investigation. Clinicians may request patient blood cultures. Follow the transfusion service's and facility's directions for investigation and for handling the component and administration set.

Recognizing delayed reactions

typically appear 24 hours to 28 days after transfusion. Possible clues include new or worsening anemia, jaundice, fever, dark urine, or a hemoglobin level that fails to rise as expected or falls again. Some patients have few symptoms.

For suspected delayed symptoms, notify the clinician and transfusion service promptly, record the transfusion history and symptoms, and assist with ordered laboratory evaluation. Fatigue and dark urine several days after transfusion, together with falling hemoglobin and jaundice, warrant prompt review; do not treat the findings as expected or begin another transfusion without further evaluation.

Documentation and clinical review

Document and report according to facility policy, including any required safety or incident report. A useful record includes the symptoms and onset time, relevant vital signs and assessment findings, component identification and transfusion details, actions taken, notifications, specimens or component disposition, and patient outcome.

Document observed findings rather than presenting an unconfirmed cause as established. Do not label a reaction definitively at the bedside; diagnosis and further transfusion decisions require clinical and transfusion-service review.