Page 1266 - Saunders Comprehensive Review For NCLEX-RN
P. 1266

multiple aspirations from the iliac crest
                                                                to retrieve sufficient bone marrow for
                                                                the transplant.
                                                             c. Marrow from the client is filtered for
                                                                residual cancer cells.
                                                             d. Allogeneic marrow is transfused
                                                                immediately; autologous marrow is
                                                                frozen for later use (cryopreservation).
                                                             e. Harvesting is done before the initiation
                                                                of the conditioning regimen.
                                             2. Conditioning refers to an immunosuppression therapy
                                                regimen used to eradicate all malignant cells, provide
                                                a state of immunosuppression, and create space in the
                                                bone marrow for the engraftment of the new marrow.
                                             3. Transplantation
                                                             a. Stem cells are administered through the
                                                                client’s central line in a manner similar
                                                                to that for a blood transfusion.
                                                             b. Stem cells may be administered by IV
                                                                infusion or by IV push directly into the
                                                                central line.
                                             4. Engraftment
                                                             a. The transfused stem cells move to the
                                                                marrow-forming sites of the recipient’s
                                                                bones.
                                                             b. Engraftment occurs when the white
                                                                blood cell (WBC), erythrocyte, and
                                                                platelet counts begin to rise.
                                                             c. When successful, the engraftment
                                                                process takes 2 to 5 weeks.
                                        D. Posttransplantation period: Infection, bleeding, or


                                   neutropenia and thrombocytopenia are major concerns until
                                   engraftment occurs.




                                          During the posttransplantation period, the client remains without any natural

                                   immunity until the donor stem cells begin to proliferate and engraftment occurs.
                                        E. Complications


                                             1. Failure to engraft: If the transplanted stem cells fail to
                                                engraft, the client will die unless another
                                                transplantation is attempted and is successful.
                                             2. Graft-versus-host disease in allogeneic transplants
                                                             a. Although the recipient cannot recognize
                                                                the donated stem cells as foreign or
                                                                nonself because of the total



                                                         1266
   1261   1262   1263   1264   1265   1266   1267   1268   1269   1270   1271