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Biomedical subjects

Ronald E Domen

Publications and source records attributed to Ronald E Domen.

10 recordsLinked to original sources

Ethical issues in transfusion medicine: the safety of blood and hematopoietic stem cell donation.

Blood and hematopoietic stem cell donors present special challenges to the transfusion medicine and hematology services. The autologous donor has a personal, vested interest in the donation, but the allogeneic donor is usually donating for altruistic reasons. Our ethical obligation and duty to donors requires that the donor be fully informed of any risks and benefits associated with the donation process. This duty is even more imperative as donors are increasingly exposed to a variety of medications to optimize the production and collection of hematopoietic cells. Transfusion medicine professionals must work to safeguard the health of the donor. The establishment of a national donor registry to collect and analyze short-term and long-term safety data is recommended.

Blood Donors↗

Allergic transfusion reactions: an evaluation of 273 consecutive reactions.

CONTEXT: Allergic reaction to transfusion is common. However, the review of a large series of allergic transfusion reactions has not been performed. OBJECTIVE: To review a large series of allergic transfusion reactions. DESIGN: A retrospective review of all reported and evaluated transfusion reactions during a 9-year period at 1 institution was performed. Associated clinical signs and symptoms were evaluated. SETTING: Large, tertiary-care teaching hospital. RESULTS: A total of 1613 adverse reactions to transfusion were evaluated. Allergic transfusion reactions accounted for 17% (273 of 1613) of the transfusion reactions. Severe allergic reactions (anaphylaxis, anaphylactoid signs and symptoms, and/or hypotension) were observed in 21 patients (7.7% of allergic reactions, or 1.3% of all transfusion reactions). Serum tryptase, a marker for anaphylaxis, was measured in 1 patient and determined to be borderline elevated. Five patients experienced allergic transfusion reactions to autologous red cell transfusions. One patient experienced hives during the transfusion of a major ABO mismatched red blood cell. A wide variety of skin manifestations were observed, but 26 (9.5%) patients did not have skin manifestations. Allergic transfusion reactions were estimated to occur in approximately 1 in 4124 blood components transfused, or 1 in 2338 transfusion episodes. Severe allergic reactions occurred in approximately 1 in 30,281 transfusions. No deaths directly attributable to transfusion were observed in this patient group. CONCLUSIONS: The clinical presentation of allergic transfusion reactions was quite variable, and the pathophysiology remains unclear. Recommendations for clinical evaluation and therapy remain problematic and often empirical.

Acute Disease↗

Favorable outcome after infusion of coagulase-negative staphylococci-contaminated peripheral blood hematopoietic cells for autologous transplantation.

Bacterial contamination of peripheral blood hematopoietic cells collected for autologous bone marrow transplantation occurs sporadically. Although transfusion of contaminated hematopoietic cells without adverse clinical sequelae has been reported, detailed guidelines for transfusing cells with contamination are not available. We report a case of autologous hematopoietic cell transplantation that necessitated using multiple aliquots of peripheral blood hematopoietic cells known to be contaminated with coagulase-negative Staphylococcus bacteria. Prophylactic intravenous antibiotic therapy was given with the infusion of contaminated hematopoietic cells. The patient had positive results on a blood culture, but engraftment was successful, and serious adverse effects did not occur. With appropriate microbial identification and prophylactic antibiotic therapy, contaminated hematopoietic products can be safely infused when necessary with a good clinical outcome.

Anti-Bacterial Agents↗

Renal failure after anti-D globulin treatment of idiopathic thrombocytopenic purpura.

Idiopathic thrombocytopenic purpura (ITP) is a disorder of rapid destruction of antibody-coated platelets. Anti-D immune globulin has been used for treatment of ITP in the United States since 1995. Initial studies identified no significant side effects of treatment. However, a recent report highlighted occasional episodes of intravascular hemolysis after anti-D immune globulin. We describe two children with ITP who developed acute renal failure (ARF) after treatment with anti-D immune globulin and also analyze ten additional cases of ARF reported to the manufacturer, Cangene Corporation, through postmarketing surveillance. All episodes of ARF were associated with intravascular hemolysis. Four patients required dialysis. Patient age ranged from 1 to 82 years, but those requiring dialysis were all under age 15 years. Several patients with ARF had preexisting creatinine elevation. Three of the patients with ARF had serologic evidence of acute Epstein-Barr virus (EBV) infection. Renal biopsy in one patient showed acute tubular necrosis, with findings consistent with pigment nephropathy. Anti-D immune globulin, used to treat ITP, may be associated with intravascular hemolysis and resultant ARF. Renal function should be monitored in patients with evidence of intravascular hemolysis. Children and adolescents may have increased risk of ARF requiring dialysis.

Acute Kidney Injury↗

Oxygen saturation and hemoglobin A content in patients with sickle cell disease undergoing erythrocytapheresis.

Severe hypoxia occurs in patients with acute chest syndrome, and erythrocytapheresis has been shown to improve oxygenation. Patients with sickle cell anemia also have decreased baseline oxygen saturation values, but the effect of erythrocytapheresis on steady-state oxygenation has not been well studied. We investigated the changes in oxygen saturation versus hematocrit, fraction of hemoglobin A, and transfusion volume during 71 prophylactic erythrocytapheresis procedures performed in 5 stable patients with sickle cell anemia. Each patient had a history of either acute chest syndrome or stroke, but no serious events occurred while enrolled in the chronic exchange program. The oxygen saturation improved from 1% to 6% during erythrocytapheresis in each of our patients (p < 0.001) regardless of preprocedure saturation level or total hematocrit. We have shown that decreased baseline oxygen saturation in sickle cell disease is related to abnormal hemoglobin S levels, and oxygen saturation can be improved with erythrocytapheresis, independent of any change in the total hematocrit.

Adult↗

Durable response to combination therapy including staphylococcal protein A immunoadsorption in life-threatening refractory autoimmune hemolysis.

BACKGROUND: Few therapeutic options are available for severe, life-threatening, refractory autoimmune hemolytic anemia. CASE REPORT: A 53-year-old 110-kg man was seen with acute onset of symptomatic severe anemia with syncope, unstable angina, and jaundice. His nadir Hct was 8.3 percent with a peak total bilirubin of 44 mg per dL. The DAT was positive but the IAT was negative. Elution studies demonstrated an IgG pan-agglutinin antibody reactive at 37 degrees C. Treatment with high-dose corticosteroids and IVIG was instituted. An accessory spleen measuring 2 cm was identified and surgically removed, but the patient continued to have intense hemolysis. Cyclophosphamide at 200 mg per day was started. Apheresis with a staphylococcal protein A immunoadsorption column (Prosorba, Cypress Bioscience, Inc.) was initiated on Day 18 and was performed twice weekly for a total of six treatments. Cyclophosphamide was continued for a total of 14 days. His transfusion requirement ceased by the third immunoadsorption treatment. Forty units of RBCs were required over 23 days in an attempt to maintain a Hct greater than or equal to 15 percent. CONCLUSION: Refractory autoimmune hemolysis can be a life-threatening event. The patient did not achieve a response until after several different therapeutic modalities were instituted, including plasmapheresis with a staphylococcal protein A column (Prosorba). A complete response continues to be durable for more than 1 year after therapy.

Acute Disease↗

Ethical and professional issues in pathology: a survey of current issues and educational efforts.

Professionalism, including ethics, has assumed greater importance in residency education, and the Accreditation Council for Graduate Medical Education now requires its incorporation into residency training. Insight into current ethics education, as well as those ethical issues important to pathology, would be efficacious. A mail survey was sent to all members of the Association of Pathology Chairs that asked for specific information related to pathology resident education in ethics and identification of important ethical issues in the current practice of pathology. A total of 148 surveys were mailed, and 53 (35.8%) were returned. Formal instruction in ethics is provided by approximately 62% of pathology residency training programs, and 94% provide informal ethics education. However, 84% of programs believed that ethical issues were underrecognized, and 38% believed that current ethics training was inadequate. Issues regarding the use of tissue for research, confidentiality and privacy, and professionalism were identified as the most important ethical issues currently encountered in pathology.

Bioethics↗