Acute Transfusion Reaction Management
For any suspected acute transfusion reaction, the transfusion should be stopped temporarily with venous access maintained, and the patient should be assessed with vital signs and a clinical exam while identity checks are performed. [1], BCSH guideline PDF
Treatment should be directed by presenting symptoms and signs rather than waiting for test results. BCSH guideline PDF
Immediate Actions During the Reaction
- Temporarily stop the transfusion when new symptoms or signs occur. BCSH guideline PDF
- Maintain venous access (do not remove the IV line). BCSH guideline PDF
- Recheck patient identity details by comparing the patient, identity band, and the blood component compatibility label. BCSH guideline PDF
- Perform visual inspection of the component and obtain standard observations while assessing severity. BCSH guideline PDF
Symptom-Guided Treatment by Reaction Severity
Mild isolated febrile reaction
- Oral paracetamol (acetaminophen) is recommended for mild isolated febrile reactions (adults: 500–1000 mg). BCSH guideline PDF
Mild allergic reaction
- The transfusion may be slowed with treatment using an antihistamine for mild allergic reactions without other features. BCSH guideline PDF
Anaphylaxis (features of airway, breathing, or circulation involvement)
- Anaphylaxis should be treated with intramuscular epinephrine (adrenaline) per anaphylaxis guidance. BCSH guideline PDF
- Intramuscular epinephrine is recommended as first-line therapy for anaphylaxis with respiratory or cardiovascular symptoms. [2]
Monotherapy vs Combination Approach
- Symptom-directed single-agent therapy is recommended for mild isolated syndromes (paracetamol for mild febrile reactions and antihistamines for mild allergic reactions). BCSH guideline PDF
- For anaphylaxis, epinephrine is the immediate required therapy and additional therapies should follow clinical severity and resuscitation needs. BCSH guideline PDF, [2]
Initiation Thresholds and “Do Not Delay” Principles
- Treatment of severe reactions should not be delayed while investigation results are pending. BCSH guideline PDF
- The decision to stop versus continue the transfusion depends on reaction severity and presence of additional features beyond mild fever or mild rash/pruritus. BCSH guideline PDF
Investigations and Reporting While Managing
- After an acute reaction, specimens and the implicated unit/set should be handled for transfusion service evaluation to support diagnosis and prevention of recurrence. BCSH guideline PDF, AABB 501 (hemovigilance and evaluation practices)
- All transfusion reactions except mild febrile and/or allergic reactions should be reported to appropriate haemovigilance/regulatory systems and reviewed locally. BCSH guideline PDF
Targets and Goals of Therapy
- The immediate goal is stabilization and elimination of ongoing exposure by stopping the transfusion when symptoms occur. BCSH guideline PDF
- The secondary goal is rapid identification of the reaction mechanism using clinical severity plus targeted evaluation. BCSH guideline PDF