Changes in Hematologic and Coagulation Profiles in Rabbits with Right-ventricle Pacing

OBJECTIVES

The aim of this study was to evaluate changes in hematology and coagulation in rabbits with right-ventricle pacing without medication.

ANIMALS AND METHODS

Blood was collected from ten non-anesthetized male rabbits from the jugular vein before and one month after pacemaker placement. Total erythrocyte, leukocyte and platelet count, hemoglobin, hematocrit and differential leukocyte count were done on automatic veterinary flow cytometry hematologic analyzer. Prothrombin time, activated partial thromboplastin time, fibrinogen level, D-dimers and kaolin-activated thromboelastography was measured from citrated blood.

RESULTS

We found an increase in red blood cell mass and decrease in platelet count, while coagulation tests did not diff er between samplings.

CONCLUSION

Right-ventricle pacing seems to have no influence on hemostasis in rabbits.

C-reactive protein and high mobility group box 1 in dogs with gastric dilatation and volvulus

OBJECTIVE

To (1) measure C-reactive protein (CRP) and high mobility group box 1 (HMGB1) and (2) evaluate their prognostic value and relationship to severity of systemic inflammatory response syndrome, routine hematological and acid-base parameters in dogs with gastric dilatation volvulus (GDV).

DESIGN

Prospective observational study from September 2010 to June 2012.

SETTING

Veterinary teaching hospital.

ANIMALS

Forty-one client-owned dogs with GDV.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Blood was collected before surgery (baseline), postsurgery, 6-10 hours postsurgery, and 18-22 hours postsurgery. CRP and HMGB1 were measured in all samples, and routine hematological, biochemical, and acid-base analyses were performed. Only baseline and postsurgery samples were used from nonsurvivors (n = 10). CRP increased significantly from postsurgery sampling to 18-22 hours postsurgery, while HMGB1 did not change over time. There was a significant difference in HMGB1 between survivors and nonsurvivors over time. Both proteins correlated with systemic inflammatory response syndrome severity, total leukocyte, segmented neutrophils, and band counts. HMGB1 correlated also with acid-base parameters (pH, bicarbonate, base excess).

CONCLUSION

HMGB1 and CRP behaved differently in regards to their kinetic patterns, with HMGB1 appearing to better reflect the severity of tissue injury in dogs with GDV than CRP.