Two dogs with immune-mediated hemolytic anemia complicated with thromboembolism were presented. Both of the dogs were initially treated with immunosuppressive therapy in conjunction with dalteparin and clopidogrel. Although the immunosuppressive therapy was effective, peritoneal effusion due to thromboembolism was observed during the course of the disease in these dogs. After initiation of rivaroxaban treatment, peritoneal effusion decreased immediately in parallel with the normalization of D-dimer, antithrombin (AT), and thrombin-antithrombin complex (TAT). Hematochezia, cutaneous hemorrhage, and hematuria were observed as adverse events after administration of rivaroxaban in one case. Rivaroxaban was effective for the control of thromboembolism secondary to immune-mediated hemolytic anemia, and D-dimer, AT, and TAT were useful to monitor the status of thromboembolic disease in dogs.
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http://dx.doi.org/10.1292/jvms.19-0605 | DOI Listing |
Hematol Rep
January 2025
Children's Haematology and Cancer Centre, Mount Elizabeth Hospital, Singapore 228510, Singapore.
Background: Peripheral erythrophagocytosis appears to be a unique sign of acquired immune-mediated hemolytic anemia. It is said to be rare but its prevalence among patients with autoimmune hemolytic anemia has not been studied.
Methods: In this retrospective study from July 2014 to June 2024, the clinical and laboratory features, treatment and outcomes of children diagnosed with autoimmune hemolytic anemia were described.
Am J Vet Res
January 2025
Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN.
Objective: To determine if oxidative stress induces phosphatidylserine (PS) externalization in canine erythrocytes and if exposure to antioxidants prevents such changes.
Methods: This was an in vitro, experimental study using 5 healthy, adult, purpose-bred research Beagles. Fresh EDTA-anticoagulated blood samples were collected from each dog, and erythrocytes were harvested.
Cureus
November 2024
Hematology and Medical Oncology, Al-Zahraa Medical College, Basrah, IRQ.
Autoimmune hemolytic anemia (AIHA) is a multifactorial disease that causes immune-mediated red blood cell destruction, resulting in anemia and hemolysis symptoms. Despite a significant understanding of its pathogenesis, the precise causes of AIHA remain largely unclear and are thought to be multifactorial. In this paper, we presented a case of sickle cell anemia who developed severe AIHA that failed to maintain response to multiple treatment lines, including steroids, intravenous immunoglobulin, rituximab, and immune suppressive medications.
View Article and Find Full Text PDFCureus
November 2024
Department of Medicine, Mercyhealth Graduate Medical Education (GME) Consortium, Rockford, USA.
Thrombotic microangiopathies (TMA) are a group of conditions that present with varying degrees of microthrombi, thrombocytopenia, microangiopathic hemolytic anemia, renal dysfunction, and neurological impairment. Etiologies can be primary, such as thrombotic thrombocytopenic purpura (TTP), hemolytic uremic syndrome (HUS), and atypical hemolytic uremic syndrome (aHUS), or secondary, such as due to systemic infections, malignancies, immune-mediated conditions, and hypertensive emergencies. In hypertensive emergencies, this presentation can occur from mechanical stress placed on red blood cells as they pass through narrowed arteries due to edema and microangiopathic changes within the vessels themselves.
View Article and Find Full Text PDFVet J
December 2024
Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlaegevej 16, Frederiksberg C DK-1870, Denmark.
The presence of erythrocyte ghost cells (EG) in blood smears indicates intravascular haemolysis or in-vitro haemolysis. However, observer reliability in detection of EG has not been documented. Immediate blood smear preparation is advised but may not always be practical.
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