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Biomedical subjects

M Sinclair

Publications and source records attributed to M Sinclair.

48 records · Page 3Linked to original sources
PubMedDate not supplied

Acquired hemolytic anemia due to "auto"-anti-A or "auto"-anti-B induced by group O homograft in renal transplant recipients.

Three patients developed severe but self-limited hemolytic anemia within 2 weeks of renal transplantation. All three had received kidneys from cadaver donors who were blood group O. Two of the recipients were blood group B while the third was blood group A. There was no pretransplant preparation of the donors or the recipients. Preoperative crossmatch and antibody screen were negative; however, subsequent to the hemolytic episodes, group-specific blood was incompatible and the patients were transfused with group O crossmatch-compatible blood. Blood bank serological tests showed a positive direct antiglobulin test (DAT), and anti-A and anti-B were eluted from group A and B patients, respectively. There was no evidence of hemolysis despite the positive DAT at 37 days following transplantation in two of the three patients who were maintained on cyclosporine immunosuppression. Retrospective analysis of renal transplant records showed that these "autoantibodies" appeared in three of the four renal transplant recipients who were on an immunosuppressive regimen of cyclosporine , with or without prednisone, but not in the 21 recipients who received radiotherapy to the donor kidney in addition to cyclosporine or azathioprine (p = less than 0.001). The possible pathogenetic mechanism for "autoantibody" formation by donor kidney and the role of immunosuppressive agents are discussed.

ABO Blood-Group System↗
PubMedDate not supplied

Protection against hemolysis in ABO mismatched renal transplantation.

The kidneys from a blood group O cadaver donor were transplanted into two patients whose blood groups were B and A2B. The former developed a positive direct antiglobulin test (DAT) and hemolysis due to anti-B; the latter also developed a positive DAT, but due to anti-A. However, this second patient, unlike the first, did not have any hemolysis. Both patients were on the same immunosuppression regimen with cyclosporine. The possible protective roles of patients' ABO subgroup and blood group substances in plasma are discussed.

ABO Blood-Group System↗
PubMedDate not supplied

False-positive results with chemically modified anti-D.

Chemically modified anti-D typing serum is considered to combine the reliability of saline IgM anti-D with the convenience of slide and rapid tube anti-D. This has led to its wide acceptance in modern blood bank practice. False-positives are considered rare and are controlled by the ABO grouping. The extra step of an Rh control, which is necessary with IgG slide and rapid tube anti-D serums, is thus eliminated. However, this report shows that adopting this practice can be misleading and dangerous. Two cases are reviewed in which the chemically modified anti-D gave false-positive results and the ABO typing did not act as an adequate control.

Aged↗
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Distance no object for learning and treatment.

Telemedicine has up to now been mainly concerned with the application of new technology to the practice of medicine. However, there are potential applications for nursing and midwifery. This paper describes how it has been employed and looks at potential applications being investigated at the Institute for Telemedicine and Telecare at the Queen's University in Belfast. The use of video conferencing within a college of nursing is also explored. With the reorganisation of nursing education, institutions may need to coordinate activities over a wide geographical ares. To date, the use of video links from the nursing and midwifery school in Nottingham has resulted in less time spent travelling between sites for staff and students.

Computer Communication Networks↗