Differentiating pulmonary transfusion reactions using recipient and transfusion factors

Area of Science:

• Transfusion Medicine
• Pulmonary Medicine
• Critical Care Medicine

Background:

• Recipient risk factors are crucial in transfusion-related acute lung injury (TRALI) and transfusion-associated circulatory overload (TACO).
• Distinguishing TRALI from pTRALI and TACO is clinically important.
• Natriuretic peptides are explored as potential biomarkers.

Purpose of the Study:

• To investigate if transfusion and recipient factors, including natriuretic peptides, can differentiate TRALI from pTRALI and TACO.
• To identify key predictors for distinguishing these transfusion-related respiratory complications.

Main Methods:

• Post hoc analysis of a case-control study involving patients with TRALI, pTRALI, TACO, and controls.
• Evaluation of clinical data and post-transfusion brain natriuretic peptide (BNP) levels.
• Logistic regression and receiver operating characteristic (ROC) curve analyses were employed.

Main Results:

• pTRALI and TACO were linked to older age, higher fluid balance, and elevated BNP levels compared to controls and TRALI.
• Predictive variables for pTRALI/TACO versus TRALI included age >70 years, BNP >1000 pg/mL, 24-hour fluid balance >3 L, and fewer transfused components.
• The logistic model achieved a 91% negative predictive value for TRALI diagnosis.

Conclusions:

• Clinical and biomarker data can effectively differentiate transfusion-related respiratory complications.
• Further research into recipient risk factors may aid in managing TRALI.
• Donor white blood cell antibody testing decisions could be informed by these findings.