A prospective multicenter observational study assessing incidence and risk factors for acute blood transfusion reactions in dogs

BACKGROUND: Reported incidence of blood transfusion reactions (TR) varies greatly.OBJECTIVE: To prospectively evaluate the incidence of acute TRs in dogs receiving allogenic blood products, using consensus definitions, and to assess factors associated with TRs.ANIMALS: Dogs (n = 858) administered allogenic blood products (n = 1542) between March and November 2022.METHODS: Prospective, multicenter surveillance study occurring in referral hospitals in the United States, United Kingdom, and Australia recording TRs in dogs administered blood products as defined by the consensus guidelines published by The Association of Veterinary Hematology and Transfusion Medicine in 2021.RESULTS: The incidence of acute TR was 8.9% (95% CI 7.0-11.1) for packed red blood cells (pRBCs) and 4.5% (95% CI 2.9-6.6) for plasma products. The most frequently reported TRs were febrile nonhemolytic TRs (FNHTR; 4%, 95% CI 2.8-5.5) when administering pRBCs and allergic TRs (3.2%, 95% CI 1.80-5.10) when administering plasma products. A higher dose of pRBC (adjusted odds ratio [aOR] 1.04 [95% CI 1.00-1.08]) was associated with a higher odds of TR. Administration of pRBCs stored for longer than 28 days was associated with higher odds of FNHTR (aOR 4.10 [95% CI 1.58-10.65]) and acute hemolytic TR (AHTR; OR 15.2 [95% CI 3.35-68.70]) when compared with pRBCs stored for 14 days or fewer. Leukoreduction of pRBC was not associated with lower odds of developing a TR (OR 1.47 [95% CI 0.89-2.42]).CONCLUSIONS AND CLINICAL IMPORTANCE: Clinicians should be mindful of the age and dose of pRBC prescribed to dogs.</p

Schalm's veterinary hematology.

Includes bibliographical references and index

Association of Veterinary Hematology and Transfusion Medicine (AVHTM) Transfusion Reaction Small Animal Consensus Statement (TRACS). Part 1: Definitions and clinical signs

Objective To use a systematic, evidence‐based consensus process to develop definitions for transfusion reactions in dogs and cats. Design Evidence evaluation of the literature was carried out for identified transfusion reaction types in dogs and cats. Reaction definitions were generated based on synthesis of human and veterinary literature. Consensus on the definitions was achieved through Delphi‐style surveys. Draft recommendations were made available through industry specialty listservs and comments were incorporated. Results Definitions with imputability criteria were developed for 14 types of transfusion reactions. Conclusions The evidence review and consensus process resulted in definitions that can be used to facilitate future veterinary transfusion reaction research