Management of Transfusion-Related Acute Lung Injury (TRALI)
Immediate Actions
Stop the transfusion immediately at the first sign of suspected TRALI—this is the single most critical intervention that can prevent progression to severe morbidity or mortality. 1, 2, 3
- Maintain IV access with normal saline for medication administration and fluid resuscitation 1, 3
- Contact the transfusion laboratory immediately to report the reaction and initiate mandatory investigation 1, 3
- Double-check all documentation for administration errors, particularly patient identification and blood component compatibility 1
Clinical Recognition
TRALI presents with acute respiratory distress within 6 hours of transfusion (typically 1-2 hours), characterized by: 1, 2, 4
- Hypoxemia and dyspnea 1, 2, 5
- Bilateral pulmonary infiltrates without evidence of circulatory overload 2
- Fever 5, 6
- Hypotension (often accompanies the onset) 5, 6
- Fluid in the endotracheal tube in intubated patients 1
Supportive Management
Provide critical care supportive measures focusing on respiratory support—there is no specific therapy for TRALI beyond stopping the transfusion and instituting critical care measures. 2, 3
- Administer high-flow oxygen (high FiO₂) to address hypoxemia 1
- Monitor vital signs every 5-15 minutes: heart rate, blood pressure, temperature, respiratory rate, and oxygen saturation 1, 3
- In ventilated patients, monitor peak airway pressure 3
- Maintain adequate blood pressure for organ perfusion (MAP >65-70 mmHg) with IV fluids 1
- Prepare for potential escalation with vasopressors, intubation equipment, and resuscitation medications readily available 1
Critical Pitfall to Avoid
Do NOT administer diuretics—they are ineffective for TRALI and may worsen the condition. 1, 2 This is the key distinction from TACO (transfusion-associated circulatory overload), which does respond to diuretics. 1
Laboratory Workup
Send baseline labs immediately: 1
- Complete blood count
- PT, aPTT, Clauss fibrinogen
- Direct antiglobulin test (DAT)
- Repeat cross-match
- Visual inspection of plasma for hemolysis
Mandatory Reporting
- Report every suspected case to the local blood bank immediately—TRALI is underdiagnosed and underreported despite being a leading cause of transfusion-associated mortality 2, 6, 4
- Notify the patient's general practitioner, as this removes the implicated donor from the donor pool 1
- The transfusion laboratory investigation is mandatory and fulfills statutory requirements 1
Prognosis
- Most patients with TRALI recover within 96 hours with supportive care 3
- In 81% of cases, recovery is rapid and complete 5
- Despite good recovery rates, TRALI remains among the top three most common causes of transfusion-related deaths 3, 4
Prevention Context
- Fresh frozen plasma (FFP) and platelet concentrates are the blood products most frequently implicated in TRALI 1, 2
- Blood banks have implemented male-only plasma donor strategies to reduce TRALI risk, as multiparous women develop leukocyte antibodies during pregnancy 1, 2
- In 89% of cases, granulocyte or lymphocytotoxic antibodies are found in the implicated blood product 5