Objective—To evaluate the bone marrow regenerative response and iron status of canine blood donors subjected to repeated blood collections for 1 year.
Design—Prospective cohort study.
Animals—57 blood donor dogs.
Procedures—Hematologic variables, including reticulocyte percentage, were evaluated before and 10 days after each blood collection in 16 dogs donating 13% of total blood volume (TBV) every 2 months (group 1), 16 dogs donating 13% of TBV every 3 months (group 2), and 25 dogs donating 15% of TBV every 3 months (group 3) for 1 year. Serum concentrations of iron, transferrin, and ferritin were analyzed before inclusion in the study and 10 days after the last donation.
Results—Significant increases in RBC distribution width, platelet count, WBC count, and reticulocyte percentage were detected after blood donation in all groups. Dogs of group 2 had a significantly higher serum ferritin concentration than did dogs of group 1; dogs of group 1 had a significant decrease in serum ferritin concentration. A positive correlation between the number of blood donations and both RBC distribution width and reticulocyte percentage was found for all groups.
Conclusions and Clinical Relevance—All blood donation regimens induced a bone marrow regenerative response, which was able to restore depleted blood cells within 10 days after blood donation while maintaining iron status within the calculated reference range. However, dogs donating 13% of TBV every 2 months had a significant decrease in iron stores, which suggested that iron-related variables must be monitored during prolonged blood donor programs.
To compare erythrocyte recovery by a cell salvage device between swab-washing by manual agitation or filtration.
12 recently expired units of canine packed RBCs.
The packed RBC units underwent quality analysis before donation from a pet blood bank. Each unit was volume-expanded with anticoagulant and subsequently divided into 2 equal aliquots used to soak surgical swabs before washing. Two different swab-washing techniques were evaluated—standard swab-washing–manual agitation (SW-MA) and swab-washing–filtration (SW-F)—with a novel prototype device. The resulting bloody fluid was processed using the Cell Saver Elite Autotransfusion System (Haemonetics). The volume, manual PCV, CBC, and RBC mass, calculated as the product of the volume and PCV, were measured before and after salvaging. Last, the RBC mass recovery was recorded as a percentage.
The RBC mass recovered from SW-MA and SW-F averaged 85.73% and 83.99%, respectively. There was no significant difference in RBC recovery between the 2 methods (P = .52).
SW-MA and SW-F recovered a similar quantity of RBCs from blood-soaked swabs in an ex vivo setting.