Tryba M
Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Bergmannsheil Bochum, Germany.
Semin Hematol. 1996 Apr;33(2 Suppl 2):34-6; discussion 37-8.
In previous studies, treatment with epoetin alfa facilitated preoperative donation of autologous blood (AB). However, some patients may not be able to donate sufficient AB to meet their surgical blood requirements when the time to surgery is short. In this multicenter, double-blind, placebo-controlled study, the ability of epoetin alfa combined with normovolemic hemodilution (NVHD) to facilitate the collection of > or = 4 AB units within 2 weeks of surgery was investigated in 112 nonanemic patients scheduled for elective orthopedic or vascular surgery. All patients received oral iron supplementation and were treated with three intravenous (i.v.) injections of epoetin alfa (300 or 600 IU/kg) on days 1,4, and 7; surgery, in combination with NVHD, was performed on day 13. A total of 4 units of AB were predeposited if the patient's hemoglobin (Hb) level exceeded 11 g/dL at each donation. Compared with placebo, epoetin alfa dose-dependently increased reticulocyte counts prior to surgery and significantly minimized the decrease in hematocrit (Hct) associated with AB donation, although there were no significant differences between dosages. While significantly more patients treated with epoetin alfa were able to donate > or = 4 AB units compared with placebo, there was no difference between the groups in exposure to allogeneic blood. This effect of epoetin alfa was particularly apparent in female patients. I.v. epoetin alfa 300 IU/kg, administered three times within 1 week, appears to be the optimum dose for facilitating the collection of > or = 4 units of AB in nonanemic patients scheduled for elective surgery and NVHD within 2 weeks.
在以往的研究中,使用促红细胞生成素α有助于术前自体血捐献(AB)。然而,当手术时间较短时,一些患者可能无法捐献足够的自体血以满足其手术用血需求。在这项多中心、双盲、安慰剂对照研究中,对112例计划进行择期骨科或血管手术的非贫血患者,研究了促红细胞生成素α联合等容血液稀释(NVHD)在手术2周内促使采集≥4个自体血单位的能力。所有患者均接受口服铁剂补充,并在第1、4和7天接受三次静脉注射促红细胞生成素α(300或600 IU/kg);手术在第13天进行,同时联合NVHD。如果患者每次献血时血红蛋白(Hb)水平超过11 g/dL,则预先储存总共4个单位的自体血。与安慰剂相比,促红细胞生成素α在术前剂量依赖性地增加网织红细胞计数,并显著减少与自体血捐献相关的血细胞比容(Hct)下降,尽管不同剂量之间无显著差异。虽然与安慰剂相比,接受促红细胞生成素α治疗的患者能够捐献≥4个自体血单位的人数显著更多,但两组在异体血暴露方面没有差异。促红细胞生成素α的这种作用在女性患者中尤为明显。在1周内三次静脉注射300 IU/kg促红细胞生成素α,似乎是促使计划在2周内进行择期手术和NVHD的非贫血患者采集≥4个单位自体血的最佳剂量。