Changes in Mean Corpuscular Volume and RBC Distribution Width Predict Erythrocyte Engraftment Following ABO-Incompatible Hematopoietic Stem Cell Transplantation.

Objectives: The purpose of this study was to identify laboratory parameters representing erythrocyte engraftment to be used as an indicator to change the recipient to donor ABO group and Rh type following an ABO-incompatible hematopoietic stem cell transplant (HSCT). Studies have shown that ABO incompatibility does not have an effect on outcome of HSCT; however, the serologic consequences of these ABO-incompatible transplants can make it difficult to decide when to begin support with donor ABO/Rh-type blood products.

Methods: This study explored the use of RBC distribution width (RDW), mean corpuscular volume, and hemoglobin as regularly tested laboratory parameters that could be used as surrogate markers for RBC engraftment in 65 patients who received ABO/Rh-incompatible HSCT.

Iron Deficiency Anemia in Patients Undergoing Extracorporeal Photopheresis for Cutaneous T-Cell Lymphoma.

Objective: To describe the indicidence and severity of iron deficiency anemia (IDA) in patients who have received extracorporeal photopheresis (ECP) treatment of cutaneous T-cell lymphoma (CTCL).

Methods: We performed a retrospective study during a 9-year period of patients with CTCL who were treated with ECP. ECP was performed with UVAR XTS and CELLEX (Therakos Inc).

Widely Used Types and Clinical Applications of D-Dimer Assay.

D-dimers are formed by the breakdown of fibrinogen and fibrin during fibrinolysis. D-dimer analysis is critical for the diagnosis of deep vein thrombosis, pulmonary embolism, and disseminated intravascular coagulation. Modern assays for D-dimer are monoclonal antibody based.

Harvesting autologous stem cells from a patient with red blood cell abnormalities of β-thalassemia intermedia.

Background: Autologous stem cell transplants in patients with hemoglobinopathies are limited. Previous reports used granulocyte-colony-stimulating factor (G-CSF) for mobilization of stem cells; there are no reported cases undergoing plerixafor mobilization. We report such a patient, providing guidance for peripheral blood stem cells collection when aberrant red blood cells (RBCs) disrupt normal separation.

Investigation of heparin-related hypotensive adverse events during photopheresis: utility of a patient care database.

Background: Extracorporeal photopheresis (ECP) is a procedure in which leukocytes are harvested from a patient's whole blood, treated with a DNA binding dye and ultraviolet light to inactivate lymphocytes, and then returned into the patient's circulation. In January 2008, we observed moderately severe anaphylactoid reactions in eight of 16 patients undergoing ECP.

Case Study: Each affected individual exhibited hypotension of sudden onset, usually with tachycardia, during the return of heparin-anticoagulated blood at the end of the first cycle of collection of leukocytes.

Fecal occult blood testing.

Colorectal cancer (CRC) is the third most common cancer in the United States. A reduction in cumulative mortality occurs when patients are routinely screened by fecal occult blood tests (FOBT) and early lesions are removed. These point-of-care tests detect minute amounts of blood released from precancerous and cancerous colon lesions.

Call subject patterns among on-call clinical pathology residents in an academic institution: how can tracking changes in patterns over time benefit resident education?

Context: On-call responsibility is an important part of residency training in clinical pathology. This task provides important consultative services for the hospital and serves as a valuable learning experience for the resident.

Objective: To identify the types of calls received by residents at a large teaching hospital, to assess how and why these calls have changed over time, and to determine the educational value in tracking such changes.

Lack of autoantibody production associated with cytomegalovirus infection.

To confirm an association between cytomegalovirus (CMV) infection and the presence of antibodies to Smith (Sm), to ribonucleoprotein (RNP), and to a component of the U1 ribonucleoproteins (U1-70 kD), we measured antibodies to these protein antigens using an enzyme immunoassay and an immunoblot. The antibodies were measured in the sera of 80 healthy subjects, one-half of whom were naturally CMV seropositive and one-half were CMV seronegative, and in eight subjects immunized with a live attenuated strain of CMV. None of the vaccinees developed antibodies to Sm, to RNP, or to U1-70 kD at either 4 or 12 months after immunization.