1 / 33

بسم الله الرحمن الرحيم

بسم الله الرحمن الرحيم. Introduction to Apheresis. SALWA HINDAWI MSc, MRCPath, CTM RCPE. Consultant Haematology & Transfusion Medicine Director of the blood Transfusion Services King AbdAlaziz University Hospital Phlebotomy Course, 11-13 April 2006. Early History.

yazid
Télécharger la présentation

بسم الله الرحمن الرحيم

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. بسم الله الرحمن الرحيم Salwa Hindawi

  2. Introduction to Apheresis SALWA HINDAWI MSc, MRCPath, CTM RCPE. Consultant Haematology & Transfusion Medicine Director of the blood Transfusion Services King AbdAlaziz University Hospital Phlebotomy Course, 11-13 April 2006 Salwa Hindawi

  3. Early History The word apheresis means, "to take away from" Blood letting, Egyptian and Greek Leeches, blood sucking worms. Salwa Hindawi

  4. Late History The twentieth century separating blood components were recognized as a therapy called apheresis. In the1950s discontinuous-flow manual procedure. In the 1960s, continuous-flow hemapheresis machines introduced. Salwa Hindawi

  5. Late History cont. By the end of the twentieth century highly sophisticated machines has been developed. In May 1981, one of the most important educational and scientific contributions to the apheresis practice, was establishing the American Society for Apheresis (ASFA) Salwa Hindawi

  6. What is Aphereis? Collection of a particular blood component from a Donor / patient and the remaining constituents are Returned to the donor or patient. Salwa Hindawi

  7. Salwa Hindawi

  8. Salwa Hindawi

  9. Methods 1. Centrifugation (specific gravity) • Intermittent flow IFC • Contineous flow CFc • Immunoadsorption • Apheresis by membrane filteration • 3. Photopheresis Salwa Hindawi

  10. Applications 1. Component collections • Plateletpheresis • Leucopheresis • Erythrocytapheresis • Plasmapheresis • Stem cell collection Salwa Hindawi

  11. 2. Therapeutic Procedure • Therapeutic cytapheresis • Therapeutic plasmapheresis • (plasma exchange) Salwa Hindawi

  12. Donation Criteria Donors for apheresis procedure must meet the criteria applicable as the donors for normal donation. CBC, ABO and Rh typing, andtibody screening and testing for transfusion and transmitted diseases(VDRL, anti-HIV I&II, HIV-1 RNA, anti-HCV, HCV-RNA, HBsAg, ANTI-HTLV I&II, RPR, anti-HBc and Anti-HBs if Anti-HBc positive) SHOULD BE DONE. A drug history should be obtained; donors who have taken aspirin or aspirin containing medications within 3 days of donation should be temporarily deferred Salwa Hindawi

  13. Donation Interval The interval between platelet donations should be at least 48 hours, with no more than two donations in a week and 24 donations in a year. plasmapheresis donors may donate as often as every 48 hours but not more than twice in a 7-day period. If it becomes impossible to return the donor's red cells during apheresis, at least 8 weeks shall elapse before subsequent apheresis procedure, unless the red cell loss was less than 200 ml. Salwa Hindawi

  14. Important points to be considered The technical staff must be properly trained to care for donors and patients. Attention must be given to the patients medication schedule and/or fluids replacement. Written informed consent must be obtained from the donor & patient Salwa Hindawi

  15. Important points to be considered Technical difficulties: Access Anticoagulation Volume shift Salwa Hindawi

  16. Total blood volume according to body mass/ml rate Newborn 82-86 ml/kg Premature 89-105 ml/kg Infant 73-82 ml/kg 70ml/kg Adult Extracorporeal volume (ECV) and TBV ECV not more than 15% of TBV Salwa Hindawi

  17. Guidelines For Therapeutic Apheresis Category I standard medical care and accepted as primary therapy or first-line therapy in conjunction with other initial therapies. Category II Generally accepted, but usually as adjunctive therapy to other treatment modalities. Category III Published data is insufficient to establish efficacy or risk/benefit. Heroic effort treatment Category IV Published control trials lack evidence of efficacy. Salwa Hindawi

  18. Therapeutic Cytapheresis • Plateletpheresis (thrombocytopheresis) the platelet count can be decreased by as much as one-third to One-half the initial value. • 2. Leucopheresis : e.g leukemia • 3. Lymphocytespheresis & photopharesis. • 4. Erythrocytapheresis : e.g SCA, severe parasite infections. • 5. Stem cells harvesting, Donor or patient. Salwa Hindawi

  19. Guidelines for Therapeutic Cytapheresis Category I Category II Leukemia with hyperleukocytosis syndrome Sickle cell syndrome Thrombocytosis, symptomatic Cutaneous T-cell lymphoma (cytoreduction or photopheresis) Hairy cell leukemia Hyperparasitemia (e.g., malaria) Peripheral blood stem cell collections for Hematopoitic reconstitution (Rheumatoid arthritis) Salwa Hindawi

  20. Category III Category IV Life-threatening hemolytic Transfusion reactions Multiple sclerosis Organ transplant rejection (also photopheresis) Sickle cell disease (prophylactic use in pregnancy) Leukemia without hyperleukocytosis syndromes Hypereosinophilia Polymyositis / dermatomyositis Salwa Hindawi

  21. Therapeutic Plasmapheresis It is the removal and retention of the plasma with return of all cellular components to the patient. Recommended 1-1.5 plasma volumes be exchanged One volume exchange(2-4 L)  unwanted plasma component to 30% of its initial value . Salwa Hindawi

  22. Guidelines for Therapeutic Plasmapheresis Category I Category II Thrombotic Thrombocytopenic Purpra (TTP). Coagulation factor inhibitors Cryoglobulinemia Goodpasture’s syndrome Guillain-Barre syndrome Homozygous familial hypercholesterolemia Hyperviscosity syndrome Myasthenia gravis Postransfusion purpura Refsum’s disease Rapidly progressive glomerulonephritis Chronic inflammatory demyelinating polyneuropathy Cold agglutinin Drug overdose and poisoning (protein-bound toxins) HUS Pemphigus vulgaris Systemic vasculitis (primary or secondary to rheumatoid Arthritis or systemic lupus Erythematosus) Salwa Hindawi

  23. Category IV Category III ABO-incompatible organ or marrow transplantation Maternal treatment of Maternal-fetal incompatibility (HDN) Thyroid storm, Multiple sclerosis Progressive systemic sclerosis Pure RBC aplasia , Transfusion refractorines due to Alloantibodies (RBC, platelet, HLA) Warm autoimmune hemolytic anemia AIDS (for symptoms of immunodeficiency) Amyotrophic lateral sclerosis Aplastic anemia Fulminant hepatic failure ITP (chronic) , Lupus nephritis Polymyositis / dermatomyositis Psoriasis , Renal transplant rejection Rheumatoid arthritis Salwa Hindawi

  24. Adverse Effects of Apheresis 1- Citrate toxicity 2- Vascular complications hematoma, sepsis, phlebitis, neuropathy. 3- Vasovagal reaction. 4- Hypervolemia. 5- Allergic reaction. 6- Haemolysis. 7- Air embolus. Salwa Hindawi

  25. Adverse Effects of Apheresis cont. 8- Depletion of clotting factors. 9- Circulatory and respiratory distress. 10- transfusion transmitted diseases. 11- loss of lymphocytes. 12- depletion of proteins and immunoglobulin Salwa Hindawi

  26. Signs and Symptoms, Possible Causes, and Treatment of Adverse Effects during Therapeutic Apheresis Salwa Hindawi

  27. Salwa Hindawi

  28. The procedure should be paused when a reaction occurs and the physician should be notified. All medical interventions should be prescribed by a physician. The physician will determine if the procedure should be restarted or aborted. SOB = shortness of breath; WB = whole blood; ACD = acid citrate dextrose; FFP = fresh frozen plasma; ACE = angiotensin-converting enzyme. Salwa Hindawi

  29. Swedish registry Since 1996 adverse events (AE) in therapeutic apheresis (TA) More than 14,000 procedures were registered during the observation period . No fatalities occurred AEs were most frequent in patients with Good pasture's syndrome (12.5%), TTP/HUS (10.5%) and Guillain Barre syndrome(11.0). Transf Apheresis Sci 2001, Aug;25(1):33-41 Salwa Hindawi

  30. Conclusion Donation & Therapeutic Apheresis is safe and easy effective methods to be used when needed. A well-trained and experienced team can overcome the technical difficulties in order to complete the procedures without complications. Policy and procedure of Donors Apheresis And Therapeutic Apheresis should be in place. Salwa Hindawi

  31. References • Henstis, D.W. Risks and safety practices in haemapheresis • procedures. Arch Pathology Lab. Med. 113:273-278, 1989. • 2. Strauss, RG et al. Clinical Applications of therapeutic • apheresis: Report of the clinical applications committee. • J Clin Apheresis 6,4, 1993. • 3. Meyer D, et al: Red cell collections by apheresis technology • transfusion 33:819-824, 1993. Salwa Hindawi

  32. 4. Denise M. Harmening, Modern Blood Banking & transfusion Practices, 4th edition 1999. 5. Guidelines for the Blood Transfusion Services in the United Kingdom 4th Edition 2000. 6. AABB Annual Meeting, Oct 26-29 Orlando, FL USA 2002. 7. AABB annual Meeting, Nov SanDiago, USA 2003. 8. Apheresis Principles and Practice, 2nd Edition, Bruce C. McLeod 2003. 9. AABB Technical Manual 14th Edition, 2005. Salwa Hindawi

  33. Thanks Salwa Hindawi

More Related