Background: Platelet transfusions are essential to prevent morbidity and mortality in patients who are severely thrombocytopenic and are at risk of spontaneous bleeding. Platelets are currently obtained either by fractionation of whole blood or by platelet apheresis. The quality of single donor platelets (SDP) in terms of yield influences platelet recovery in the recipient and allows prolonging intervals between transfusions. Material and Methods: Donor demographic and laboratory data were analyzed prior to performing plateletpheresis to identify donor factors that influence platelet yield. The study was conducted on 130 healthy, first-time plateletpheresis donors over a period of 4 years. The plateletpheresis procedures were performed using Fresenius Kabi COM.TEC and Hemonetics MCS plus separator. A relationship between pre-donation donor variables and yield of platelets was studied using the Pearson correlation. Results: The mean platelet yield was 3.160.62x10 11 per unit. A positive correlation was observed between platelet yield and pre-donation platelet count, body mass index (BMI; Kg/m 2) of the donor, while a negative correlation was observed between age and the platelet yield. Conclusion: Donor pre-donation platelet count, BMI and donor age influence platelet yield. Young healthy donors with a high platelet count and better BMI can give a better platelet yield in the SDP.
Haemolytic disease of the foetus and newborn (HDFN) is a condition in which the lifespan of an infant's red blood cells (RBCs) is shortened by the action of specific maternal immunoglobulin G (IgG) antibody. Rhesus (Rh)-D haemolytic disease of the newborn is a prototype of maternal isoimmunization and foetal haemolytic disease. Although rare, the other blood group antigens capable of causing alloimunization and haemolytic disease are c, C, E, Kell and Duffy. We report a case of HDFN due to anti-D and anti-C in the maternal serum as a result of anamnestic response to Rh-D and C antigens. This report highlights the importance of antibody screening in antenatal women which could assist in diagnosing and successfully treating the foetus and newborn with appropriate antigen negative cross-matched compatible blood.
Background: Blood is a scarce, but lifesaving resource; it is also the most efficient vehicle for the transmission of human immunodeficiency virus (HIV). Hence there is a need for accurate screening of HIV among blood donors. The present study was designed to assess the seroprevalence of HIV, among the blood donors in a tertiary care hospital, Andhra Pradesh. Methods: Prospective study over a period of one year. A total of 5,329 donor blood samples were screened for HIV status using enzyme linked immunosorbent assay. The reactive samples have been tested again twice using different kits. The samples reactive all three times were considered positive. The samples which were positive only in first test were labelled as false positive. Results: Out of 5,329 blood donors screened, 27 (0.5%) were initially reactive and 15 (0.28%) were reactive after triple testing. Conclusions: Our study showed similar HIV seroprevalence as that reported by National acquired immunodeficiency syndrome control organization statistics. But there was a mild increase in HIV prevalence among rural donors in our region compared to the urban donors.
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