Delay in peripheral blood recovery is a common complication of autologous purged bone marrow transplantation. To overcome this problem, we examined the effect of continuous intravenous administration of high-dose G-CSF on hematologic recovery following autologous bone marrow transplantation (auto-BMT) with purged bone marrow. Continuous intravenous administration of high dose G-CSF significantly facilitated the recovery of platelet counts and reticulocyte counts compared to one-hour bolus intravenous injection of the usual-dose G-CSF, although both ways of administration facilitated the recovery of leukocyte counts. The results showed continuous intravenous administration of high-dose G-CSF was useful to facilitate the recovery of not only leukocytes but also reticulocytes and platelets following auto-BMT with purged bone marrow in certain situations. Continuous i.v. administration of high-dose G-CSF may be one of the safest and most useful modes facilitating the hematopoietic recovery following auto-BMT with purged bone marrow.

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