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Query: UMLS:C0012739 (disseminated intravascular coagulation)
 8,673 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Thirty thrombocytopaenic patients of acute leukaemias and myelodysplastic syndrome were transfused platelets collected from ABO-matched donors using Haemonetics V30 and V50 blood processors. Twenty-seven patients had septicaemia and/or splenomegaly; 2 patients had disseminated intravascular coagulation (DIC). Pre-transfusion platelet count was 11.0 +/- 4.0 X 10(9)/L. The mean corrected count increments (CCI) 1 hour and 18 hours post-transfusion were 13.02 X 10(9)/L and 3.88 X 10(9)/L respectively, in the absence of DIC. Active bleeding stopped when platelet count was above 15.0 X 10(9)/L. There was no difference between the platelet yield from two blood processors.
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PMID:Platelet transfusion therapy in thrombocytopaenia of haematologic malignancies. 276 61

Platelet crossmatching may provide a useful way of selecting donors for effective platelet transfusions in patients refractory to random donor platelet concentrates due to alloimmunization. We assessed the predictive value of a flow cytometric platelet immunofluorescence crossmatch test for the outcome of HLA matched platelet transfusions in a group of alloimmunized patients. Platelet immunofluorescence (PIFT) crossmatches were performed for 104 HLA-matched platelet transfusions administered to 30 patients. A negative PIFT crossmatch correctly predicted a successful platelet transfusion (1 h post-transfusion platelet recovery >20%) in 56/75 (75%) cases. We also considered non-immunological factors that, in combination with alloimmunization, might have contributed to an unsuccessful transfusion result, i.e. fever, septicaemia, splenomegaly, disseminated intravascular coagulation and bleeding. The predictive value of a negative PIFT crossmatch was better when these non-immunological factors were absent [48/59 (81%) correct predictions] than when these factors were present [8/16 (50%) correct predictions] (P=0.01; chi-square test). The effect of ABO incompatibility between donor and recipient on the predictive value of the PIFT crossmatch was also analysed. Positive PIFT crossmatches occurred more frequently in ABO incompatible donor-recipient combinations [in 18/28 (64%) cases] than in ABO-compatible donor-recipient combinations [in 11/76 cases (14%)] (P<0.001, chi-square test). Successful platelet transfusions were observed on 53/76 (70%) occasions in ABO compatible transfusions as compared to 16/28 (57%) in ABO incompatible transfusions. This difference was not statistically significant (P=0.23; chi-square test). Consequently, a negative PIFT crossmatch appeared to be non-predictive for the transfusion outcome in cases of ABO incompatibility between donor and recipient. We conclude that the PIFT crossmatch for platelet donor selection in addition to matching for HLA antigens, is predictive for the outcome of ABO compatible transfusions in alloimmunized recipients and prediction levels are increased when non-immunological causes for platelet refractoriness are absent.
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PMID:A flow cytometric platelet immunofluorescence crossmatch for predicting successful HLA matched platelet transfusions. 861 59

The development of immune-mediated hemolytic anemia is a well-recognized complication after allogeneic bone marrow transplantation (BMT). The majority of reported cases, however, have been alloimmune in origin due to ABO or minor red blood cell antigen incompatibilities between the donor and recipient. In this study, we report seven adult patients who developed autoimmune hemolytic anemia (AIHA) between June 1985 and January 1993. These patients were identified from a total of 236 adult patients who received T cell-depleted (TCD) grafts as graft-versus-host disease (GVHD) prophylaxis. The onset of AIHA was at a median of 10 months (range 7-25 months) post-transplant and occurred in 5% of all patients transplanted with TCD grafts who survived at least 6 months. Six patients had a warm reacting autoantibody, while one patient had a cold-reacting antibody with a thermal amplitude up to 30 degrees C. All were receiving immunosuppressive treatment for GVHD at the time of diagnosis. Initial treatment in all patients consisted of steroids. Three of the seven had a partial response while the four remaining patients failed to respond to corticosteroids. Splenectomy was performed in three patients with two partial responses. Four patients were treated with additional therapeutic interventions, including plasmapheresis, immunoglobulin infusions, staphylococcus protein A column, or other immunosuppressive agents. In five cases, erythropoietin was administered as adjunctive treatment to maintain adequate hematocrit levels. Two patients are presently in complete remission after prolonged courses of steroids, while a third patient has compensated hemolysis requiring low-dose steroids. Four patients died due to either infectious complications or disseminated intravascular coagulation secondary to cold agglutinin disease. These data indicate that AIHA is a clinically significant and not infrequent complication in allogeneic marrow transplant recipients. The response to conventional treatment is generally unsatisfactory as even patients who ultimately remit require prolonged courses of immunosuppressive therapy.
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PMID:Autoimmune hemolytic anemia following T cell-depleted allogeneic bone marrow transplantation. 880 20

The dramatic advances that have taken place in recent years in the care of sick and premature infants also have been matched by a similar increase in the use of blood transfusion therapy. Haematological features indicate that a newborn has a blood volume of 85-125 ml/kg the foetal haemoglobin is 60-85% and average Hb in full term infant is 18 gm/dl. By 2-3 months it falls to 11-12 g/dl the main cause of anemia are iron poor diet, weaning diets recurrent or chronic infections and hemolytic episodes in malarious areas. The red cells transfusions are usually top up transfusions, exchange transfusions, partial exchange transfusions. Top up- are for investigational losses and correction of mild degrees of anemias, upto to 5-15 ml/kg. They comprise 90% of all neonatal transfusions and are used in low birth babies in special care units for a maximum of 9-10 episodes. The walk in donor programs once popular are not much in vogue. The threshold for transfusion is 8-10 g/dl Hb for upto 5 weeks. Exchange transfusions are done for correction of anemia, removal of bilirubin, removal of antibodies and replacement of red cells. Ideally plasma reduced red cells that are not older than 5 days are used. It is prepared by removal of 120 ml of standard whole blood donation. The advantage of fresh cells is that hyperkalemia is avoided and good post transfusion survival acceptable red cell oxygen affinity. However it has to be screened for sickle cell disease and G6PD deficiency. Indications for exchange transfusion are kernicterus, neonatal hemolysis, G6PD deficiency, ARDS, neonatal sepsis, DIC and neonatal isoimmune thrombocytopaenia. Complications include over transfusion, perforation of major vessels, hypocalcaemia, citrate toxicity, hypothermia, hypoglycaemia, thrombocytopenia, necrotizing enterocolitis, GVHD, bacterial, viral infections. Partial exchange transfusions are done for symptomatic anemia, where Hb<10 g/dl, it is indicated in polycythemia and hyperviscosity syndromes. Exchange volume = Blood volume x (observed Hct-Desired HCt) divided observed Hct. Points to consider-there is weak expression of ABO antigens so particular care while grouping. Transfusing volumes should be 2-5 ml/kg/hour in paediatric bags of 50-100 ml with infusion devices. Platelet transfusion are indicated in neonatal throbocytopaenia, thrombocytopaenia due to sepsis, DIC, bacterial pathogens, CMV, TORCHS, Obstetric conditions such as pre eclampsia, intrauterine death abruption placenta birth injury hypoxia schock neonatal iso immune thrombocytopaenia and maternal ITP. Administration 1 RDE/pack per 2.5 kg single dose of fresh platelets less than 24hrs which contains 55 x 10(9) cells. This also contributes fresh plasma so is useful for coagulation defects also, though there is a risk of CMV and GVHD due to leucocyte contamination. Granulocyte concentrate; Gravity leucopheresis-1:8 ratio of 60 ml of 6% HES made to stand for 1hr.
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PMID:Component therapy. 1451 88

A variety of patient and product-related factors influenced the outcome of 6379 transfusions given to 533 patients in the Trial to Reduce Alloimmunization to Platelets (TRAP). Responses measured were platelet increments, interval between platelet transfusions, and platelet refractoriness. Patient factors that improved platelet responses were splenectomy and increasing patient age. In contrast, at least 2 prior pregnancies, male gender, splenomegaly, bleeding, fever, infection, disseminated intravascular coagulation, increasing height and weight, lymphocytotoxic antibody positivity, an increasing number of platelet transfusions, or receiving heparin or amphotericin were associated with decreased posttransfusion platelet responses. Platelet factors that were associated with improved platelet responses were giving ABO-compatible platelets, platelets stored for 48 hours or less, and giving large doses of platelets while ultraviolet B (UV-B) or gamma irradiation decreased platelet responses. However, in alloimmunized lymphocytoxic antibody-positive patients, the immediate increment to UV-B-irradiated platelets was well maintained, whereas all other products showed substantial reductions. Refractoriness to platelet transfusions developed in 27% of the patients. Platelet refractoriness was associated with lymphocytotoxic antibody positivity, heparin administration, fever, bleeding, increasing number of platelet transfusions, increasing weight, at least 2 pregnancies, and male gender. The only factors that reduced platelet refractoriness rates were increasing the dose of platelets transfused or transfusing filtered apheresis platelets.
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PMID:Factors affecting posttransfusion platelet increments, platelet refractoriness, and platelet transfusion intervals in thrombocytopenic patients. 2671 Mar 53

Although in Japan, transplant organs obtained from brain-dead donors (BDD) has been allowed since October 1997, to date only 27 liver grafts from BDD have been obtained. The severe shortage of transplantable organs is a big problem, not only in liver transplantation but also other organ transplants. Liver transplantation is a fundamental treatment for end-stage liver disease. In order to perform living-donor liver transplantation (LDLT) in a safer manner, apheresis (plasmapheresis) plays a major role in Japan because of the prevalence of LDLT wherein later re-transplantation is difficult. Therefore, because of a limited donor supply and because the need of patients with end-stage liver disease is critical, use of grafts from ABO-incompatible donors may be the only available option. From June 1990 to November 2004, 1010 patients underwent 1060 LDLT cases at Kyoto University Hospital. Of these, 139 LDLT cases (13.1%) received ABO-incompatible living-donor liver grafts. The role of apheresis in ABO-incompatible LDLT is the reduction of antibody titers such as anti-A or anti-B antibody. We perform preoperative apheresis as a general rule for incompatible cases, and the recipient's antibody level against the donor's blood type is decreased to one eighth of the baseline value before LDLT. Up to the present, baseline antirejection regimens included steroids, tacrolimus and cyclophosphamide. At first, splenectomy was performed during operation to suppress antibody production, and intraportal infusion therapy was performed to control local disseminated intravascular coagulation (DIC) occurring in ABO-incompatible grafts. At that time, three agents--methylprednisolone, prostaglandin E1, and gabexate mesilate--were infused continuously for 3 weeks after LDLT. At present, instead of intraportal infusion therapy, hepatic artery infusion therapy without splenectomy is adopted because of portal thrombosis, and two agents--methylprednisolone and prostaglandin E1--are infused continuously for 3 weeks after LDLT. Recently, we introduced an anti-CD20 monoclonal antibody (Rituximab) instead of splenectomy for B cell deletion before ABO-incompatible LDLT. In this article, we describe our therapeutic strategy and the role of apheresis around ABO-incompatible LDLT.
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PMID:Therapeutic strategy and the role of apheresis therapy for ABO incompatible living donor liver transplantation. 1607 68

Liver transplantation is a radical surgical therapy for end-stage liver disease. Although in Japan organ transplantation from brain-dead donors (BDD) has been allowed since October 1997, to date, only 29 liver grafts from BDD have been obtained. Thus, most of the liver transplantations carried out use living-donor liver transplantation (LDLT), and BDD liver transplantation is only used in rare cases. In order to carry out LDLT more safely, apheresis (plasmapheresis: PE) plays a major role in our country because of the prevalence of LDLT wherein later re-transplantation is difficult. Thus, because of a limited donor supply and because the needs of patients with end-stage liver disease is critical, use of grafts from ABO-incompatible (ABO-I) donors might be the only available option. From June 1990 to November 2005, 1100 patients underwent 1151 LDLT cases at Kyoto University Hospital. Additionally, 159 LDLT cases (13.8%) received ABO-I living-donor liver grafts. The role of apheresis in ABO-I LDLT is the reduction of antibody titers such as anti-A or anti-B antibody. We carry out preoperative PE as a general rule for ABO-I cases, and the recipient's antibody level against the donor's blood type is decreased to one eighth of the baseline value before LDLT. Until now, baseline immunosuppressive agents included steroids, tacrolimus and cyclophosphamide. At first, splenectomy was carried out during surgery to suppress antibody production, and intraportal (PV) infusion therapy was carried out to control local disseminated intravascular coagulation (DIC) occurring in ABO-I grafts. At that time, three drugs-methylprednisolone, prostaglandin E1 (PGE1), and gabexate mesylate (FOY) were infused continuously for 3 weeks after LDLT. At present, instead of PV infusion therapy, hepatic artery infusion therapy without splenectomy is adopted because of portal thrombosis, and two drugs- methylprednisolone and PGE1- are infused continuously for 3 weeks following LDLT. Recently, we introduced anti-CD20 monoclonal antibody (Rituximab) instead of splenectomy for B cell deletion before ABO-I LDLT. In the present article, we describe the role of apheresis around ABO-I LDLT based on our recent experiences.
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PMID:The role of apheresis therapy for ABO incompatible living donor liver transplantation: the Kyoto University experience. 1709

A great variety of patient- and product-related factors influence the outcome of platelet transfusions. The patient-related factors are numerous, either physical factors as weight and height, or related to pathological being as splenomegaly, fever, infection, disseminated intravascular coagulation, previous HLA allo-immunization, or related to the treatment, as amphotericin. Major platelet factors that are associated with impaired responses are giving a decreased dose of platelets, ABO incompatible products, and platelets stored for more than 48 hours. When trying to prevent or to treat refractoriness and to finely tune platelet transfusions, all these factors have to be taken into account, and a good coordination between the blood bank and the clinician team is essential.
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PMID:[Factors affecting posttransfusion platelet efficiency "close relationship between patient and product"]. 1751 57

Hereditary haemorrhagic telangiectasia (HHT) causes chronic nasal and gastrointestinal haemorrhage. Prothrombotic agents are commonly used for severe haemorrhage. Thrombotic risks have not been defined. In order to identify prothrombotic variables in HHT patients, and assess their potential functional significance, a pilot ELISA-based study comparing plasma proteins in healthy individuals with HHT to age/sex-matched non-HHT controls was validated in a full study of 309 consecutive HHT-affected individuals. In the pilot study, factor VIII (FVIII) and von Willebrand factor antigen concentrations were elevated in the HHT group compared to non-HHT controls (p<0.0013, Mann-Whitney). Service laboratory measurements confirmed high FVIII:Ag in 125 HHT-affected individuals with no recent ill-health, intervention or venous thromboemboli. FVIII:Ag levels increased with age. Logistic regression also suggested an age-independent association with HHT-associated pulmonary arteriovenous malformations (AVMs). No association was demonstrated between FVIII:Ag and acute phase response, disseminated intravascular coagulation, ABO group, pulmonary artery pressure, or markers of HHT haemorrhage. Elevated FVIII:Ag were associated with shortened activated partial thromboplastin times (APTTs), and VTE:VTE affected 20/309 (6.5%) HHT-affected individuals, at median age 61(36-71) years. Four VTE occurred in factorV Leiden heterozygotes in the months following PAVM-associated brain abscess. The strongest association with VTE was with log-transformed FVIII:Ag measured 10-132 months from VTE (odds ratio 2.41, 95% confidence intervals 1.254, 4.612, p=0.008). Age made no additional contribution to VTE risk once adjusted for FVIII:Ag. In conclusion, HHT-related elevation of FVIII:Ag levels may influence thrombotic risk in HHT. Individualised risk-benefit considerations may be helpful in HHT management.
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PMID:Elevated factor VIII in hereditary haemorrhagic telangiectasia (HHT): association with venous thromboembolism. 1861 56

Brown spiders have world-wide distribution and are the cause of health problems known as loxoscelism. Necrotic cutaneous lesions surrounding the bites and less intense systemic signs like renal failure, DIC, and hemolysis were observed. We studied molecular mechanism by which recombinant toxin, biochemically characterized as phospholipase-D, causes direct hemolysis (complement independent). Human erythrocytes treated with toxin showed direct hemolysis in a dose-dependent and time-dependent manner, as well as morphological changes in cell size and shape. Erythrocytes from human, rabbit, and sheep were more susceptible than those from horse. Hemolysis was not dependent on ABO group or Rhesus system. Confocal and FACS analyses using antibodies or GFP-phospholipase-D protein showed direct toxin binding to erythrocytes membrane. Moreover, toxin-treated erythrocytes reacted with annexin-V and showed alterations in their lipid raft profile. Divalent ion chelators significantly inhibited hemolysis evoked by phospholipase-D, which has magnesium at the catalytic domain. Chelators were more effective than PMSF (serine-protease inhibitor) that had no effect on hemolysis. By site-directed mutation at catalytic domain (histidine 12 by alanine), hemolysis and morphologic changes of erythrocytes (but not the toxin's ability of membrane binding) were inhibited, supporting that catalytic activity is involved in hemolysis and cellular alterations but not toxin cell binding. The results provide evidence that L. intermedia venom phospholipase-D triggers direct human blood cell hemolysis in a catalytic-dependent manner.
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PMID:Identification of a direct hemolytic effect dependent on the catalytic activity induced by phospholipase-D (dermonecrotic toxin) from brown spider venom. 1945 8


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