Posttransfusion purpura cleveland clinic journal of medicine. Post transfusion purpura should, however, be considered in any patient with. Almost all patients are multiparous women who typically received rbc transfusion during a surgical procedure. The investigation and transfusion support of patients with. Risk of posttransfusion purpura were significantly higher with plateletcontaining transfusions, greater number of units transfused, and underlying health conditions including a history of cardiac.
It is caused by alloimmunization against platelet antigens, antihpa1a being the most frequent antibody. In light of the fact that new pathogens and infectious diseases may present challenges to the safety of the blood supply, this edition includes an appendix on zika virus. Posttransfusion purpura is a complication of blood product transfusion in which the recipient produces antiplatelet antibodies resulting in severe thrombocytopenia. Sudden onset of thrombocytopenia reduced platelet count within 510 days of the transfusion of blood products. In a prospective, observational study of 100 critically ill children, rbc transfusions were associated with a variable response in markers of hemolysis, including indirect. Mechanism of transfusion related acute lung injury induced by hla class ii antibodies authors. Posttransfusion purpura ptp panel 5631 diagnostic labs. Post transfusion purpura ptp is a rare and delayed transfusion reaction that typically occurs in multiparous women. Post transfusion purpura how is post transfusion purpura. Francis, md, phd 69 transfusion related immunomodulation 445 james c. Thus, the widely used definition of thrombocytopenia and grading of its severity have limited. A manual or serological crossmatch should be performed if screening is.
Posttransfusion purpura ptp is a rare yet serious disease characterized by severe thrombocytopenia occurring after a blood transfusion. Thrombocytopenia occurs approximately one week after the administration of blood,1, 2 a. However they need to be used judiciously as they are a limited resource and are not risk. This guideline aims to provide practical advice on platelet transfusions to help clinicians to. Complications of transfusion hematology and oncology. Transfusion of cellular blood products containing any platelets e. Post transfusion purpura ptp is an uncommonly reported post transfusion adverse event that can present with severe thrombocytopenia.
Recapitulation of posttransfusion purpura by crossstrain platelet. Acute, severe thrombocytopenia that develops 510 days following a blood transfusion, together with primarily mucocutaneous bleeding and presence of. Background ptp is a rare but serious complication of blood transfusion. Ptp is more common in multiparous females due to previous sensitisation during. Rare 200 cases reported pathophysiology profound thrombocytopenia 12 wks post transfusion transfusion of donor platelets with a platelet antigen lacking in the recipient human platelet specific alloantigen 1a hpa1a. The typical patient is a multiparous woman who develops sudden severe purpura 1 week after receiving a transfusion. Posttransfusion purpura occurs when a person with an antiplatelet antibody is transfused with platelets expressing the corresponding antigen. Some of these cookies are essential to the operation of the site, while others help to improve your experience by providing insights into how the site is being used.
Post transfusion purpura ptp workup bloodworks northwest. Posttransfusion purpura ptp australian red cross lifeblood. Post transfusion purpura decreased platelets less than 10,000l. Pathophysiology, treatment, and prevention of posttransfusion purpura ptp ptp is caused by plateletspecific antibodies in a patient who has been previously exposed to platelet antigens through pregnancy or transfusion. The journal of the american board of family practice november 1991, 4 6 477. Thrombocytopenia is a common perioperative clinical problem. Exchange transfusion is effective 1, 12, but is hampered by the risk of severe transfusion reactions. Pdf posttransfusion purpura is a rare syndrome characterized by severe thrombocytopenia and bleeding caused by alloimunization to human platelet. Its diagnosis can be elusive given its substantial symptomatic overlap with other thrombocytopenic syndro. Sample must be received within 7 days of draw date. By applying the platelet suspension immunofluorescence test psift, platelet. Temporal relationship to blood transfusion, thrombocytopenia, and purpuric rashes with or without bleeding manifestation, supported by the serological presence of antiplatelet antibodies, are characteristic of ptp. Up to 6 % of free dna in maternal plasma is of fetal origin, clearing.
The clinical presentation is post transfusion purpura ptp, wigth severe thrmbocytopenia, epistaxis, and hemorrhages. Here, we report a case of posttransfusion purpura in a 56. Isoantibody specificity in post transfusion purpura. Nonimmune related transfusion transmitted infections viral, bacterial and parasite etc. Christie dj, pulkrabek s, putnam jl, slatkoff ml, pischel kd 1991 posttransfusion purpura due to an alloantibody reactive with glycoprotein iaiia. No platelet increment was achieved despite transfusions with buffy coat, hlacompatible, and hpa1a negative platelets. Alternate explanations for thrombocytopenia are more likely, but transfusion cannot be ruled out.
Post transfusion purpura template version 0104 authors. Post transfusion purpura ptp is a rare but serious complication of transfusion in which thrombocytopaenia and purpura bleeding underneath the skin develops 5 10 days post transfusions as a result of destruction of transfused as well as autologous platelets. Delayed serologic transfusion reactions were reported at a rate of 24. Free lessons near miss incidents, where errors are caught. Post transfusion purpura ptp is an uncommonly reported post transfusion.
Cushing, md 68 transfusion associated graftversushost disease 435 richard o. Post transfusion purpura is an acute, severe, thrombocytopenic state that has been described in 15 patients. Since the term post transfusion purpura was coined in 1961, over 250 cases have been reported in the literature, 64 yet ptp is still considered a relatively rare hazard of blood transfusion. There are other potential causes present that could explain thrombocytopenia, but transfusion is the most likely cause. Diagnosis and management of posttransfusion purpura. Renal transplantation from live donor with abo incompatibility or positive crossmatch, where a suitable nonreactive live or cadaveric donor is unavailable preparative regimen 39. Clerical errors both in transfusion service and at bedside are most common cause c. Posttransfusion purpura should, however, be considered in any patient with. Diagnosis and management of post transfusion purpura. Evidence is clearly in favor of a cause other than the transfusion, but transfusion cannot be excluded. It also outlines the transfusion support required for patients with a past history of ptp or the mothers of children affected by neonatal alloimmune thrombocytopenia nait. Diagnosis and management of posttransfusion purpura case.
While global haemostasis is influenced by many patient and procedurerelated factors, the contribution of thrombocytopenia to bleeding risk is difficult to predict, as platelet count does not linearly correlate with likelihood of bleeding. Post transfusion purpura transfusion related acute lung injury graft vs host disease delayed haemolytic transfusion reaction acute allergic type reaction incorrect blood component transfused. A case of posttransfusion purpura with severe refractory. A young female was diagnosed with acute leukaemia, and treatment commenced. Plasmapheresis is now considered the therapy of choice,25,27,28. Highdose igg for post transfusion purpura revisited. Nait, post transfusion purpura, gene analysis, common variant, hpa4ab r143q prior authorization required prior authorization required prior authorization required 81109 human platelet antigen 5 genotyping hpa5, itga2 integrin, alpha 2 cd49b, alpha 2 subunit of vla2 receptor gpia eg, neonatal alloimmune thrombocytopenia. Sumithira vasu, charles bolan, in hematopoietic stem cell transplantation in clinical practice, 2009. Logdberg, in blood banking and transfusion medicine second edition, 2007 posttransfusion purpura. Post transfusion purpura alloantibody directed against a highincidence platelet antigen p1 a1 usually occurs in multiparous women who do not have the antigen about 510 days after being transfused with platelets, the platelet count drops purpura were significantly higher with plateletcontaining transfusions, greater number of units transfused, and underlying health conditions including a history of cardiac. Results in destruction of recipient s platelets and thrombocytopenia. They measure 310 mm, whereas petechiae measure less than 3 mm, and ecchymoses greater than 1 cm.
What is the pathogenesis of posttransfusion purpura. Posttransfusion purpura ptp is a rare complication of blood transfusion characterized by the precipitous onset of severe thrombocytopenia and absolute refractoriness to platelet transfusions. Transfusion reaction or adverse effects of transfusion. Posttransfusion purpura is a rare syndrome characterized by severe thrombocytopenia and bleeding caused by alloimunization to human platelet specific antigens following a blood component transfusion. These alloantibodies destroy the patients platelets leading to thrombocytopenia, a rapid decline in platelet count. Rbc destruction may be intravascular or extravascular. Prior exposure to foreign platelet antigens, through transfusion, transplant or pregnancy can result in antihuman platelet antigen antibodies. Posttransfusion purpura answers are found in the washington manual of medical therapeutics powered by unbound medicine. Neonatal thrombocytopenia and post transfusion purpura ptp are two types of. Zimring, md, phd and theresa nester, md 70 iron overload 449 yelena z.
Highdose intravenous immunoglobulin for post transfusion purpura. The antibody against the human platelet alloantigen hpa1a is responsible for most of the cases. Jun 18, 2019 posttransfusion purpura ptp is a rare condition that develops 510 days after transfusion of platelet containing blood component. Post transfusion purpura is a very rare complication in which the platelet count falls rapidly 4 to 14 days after an rbc transfusion, causing moderate to severe thrombocytopenia. Posttransfusion purpura washington manual of medical. Posttransfusion purpura american board of family medicine. Post transfusion purpura ptp is a secondary immune response. Blood transfusion is an important part of daytoday clinical practice. Posttransfusion purpura cured by steroid therapy in a man. Post transfusion purpura sudden, severe thrombocytopenia 510 days post transfusion and active bleeding 0. Posttransfusion purpura is a serious adverse effect of transfusion due to hpaantibodies. Although this is rare and less common in males, it can occur, particularly as a patients comorbidities increased. Pathophysiology, treatment, and prevention of post. Hgbhct ldh increases as rbcs break down haptoglobin decreased if acute intravascular, normal if extravasculardelayed bilirubin peaks in 36 hours as free hemoglobin is metabolized.
The antibody against the human platelet alloantigen hpa1a. Ptp occurs 312 days after blood transfusion, often in a multiparous. Post transfusion purpura ptp is an extremely rare transfusion reaction that usually presents with severe thrombocytopenia capable of causing. Post transfusion purpura ptp is an uncommonly reported post transfusion adverse. Post transfusion purpura is a complication of blood product transfusion in which the recipient produces antiplatelet antibodies resulting in severe thrombocytopenia.
Posttransfusion purpura ptp can occur in patients who have been previously sensitized to platelets by transfusion or through pregnancy. Patients are sensitized by transfusion or pregnancy. Its diagnosis can be elusive given its substantial symptomatic overlap with other thrombocytopenic syndromes. Serum sample should be spun down and taken off the clot.
Post transfusion purpura ptp is a delayed adverse reaction to a blood transfusion or platelet. Posttransfusion purpura an overview sciencedirect topics. Posttransfusion purpura cleveland clinic journal of. The typical patient is a multiparous woman who develops sudden severe purpura 1 week after receiving a transfusion of packed red cells or whole blood. Oct 18, 2019 the patient is exhibiting posttransfusion purpura. Urine test of firstvoided post transfusion specimen for presence of free hemoglobin not for free rbcs. The british journal of haematology publishes original research papers in clinical, laboratory and experimental haematology. Vogelsang g, kickler ts, bell wr 1986 post transfusion purpura. Nov 15, 20 posttransfusion purpura ptp is a rare yet serious disease characterized by severe thrombocytopenia occurring after a blood transfusion. Posttransfusion purpura is a rare transfusion related complication that often goes undiagnosed. Free from infections that could be harmful to the recipient.
The spots are caused by bleeding underneath the skin secondary to platelet disorders, vascular disorders, coagulation disorders, or other causes. Haemochromatosis iron overload acute transfusion reaction pathophysiology immune associated acute haemolytic reactions due to either igm antia, antib or antia,b. Pharmacy prior authorization clinical guidelines immune. Ptp usually presents 512 days after transfusion, and is a.
Post transfusion purpura ptp is a rare bleeding disorder caused by alloantibodies specific to platelet antigens. Hpa1a antibodies were first described in a 1959 report by van loghem et al in a female patient who developed severe thrombocytopenia 7 days. Posttransfusion purpura ptp is a delayed adverse reaction to a blood transfusion or platelet transfusion that occurs when the body has produced alloantibodies to the allogeneic transfused platelets antigens. Posttransfusion purpura ptp is an uncommon but lifethreatening condition characterized by. Pdf post transfusion purpura is a rare syndrome characterized by severe thrombocytopenia and bleeding caused by alloimunization to human platelet. Highdose intravenous immunoglobulin for posttransfusion purpura. It is due to alloimmunization against platelet antigens which leads to acute profound thrombocytopenia following the transfusion of any plateletcontaining product red blood cells or platelets. Clinical transfusion practice who world health organization. Due to alloantibodies formed against platelet antigens in the transfused blood.
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