Comparison of two different doses of preoperative recombinant erythropoietin in men undergoing radical retropubic prostatectomy (original) (raw)
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Gynecologic and Obstetric Investigation, 2002
The effect of preoperative recombinant human erythropoietin (r-HuEPO) in anemic women undergoing gynecologic surgery for benign diseases was evaluated in this prospective, not randomized study. One hundred and twenty women were included in the study. Sixty women were treated preoperatively with r-HuEPO at three different cumulative doses: 80,000, 120,000 and 160,000 IU. Sixty nonanemic women were not treated. Baseline hemoglobin (Hb) levels were measured. Hb levels were also measured on the day of the surgery before starting the procedure, on postoperative day 1 and on the day of discharge from the hospital. Treatment with r-HuEPO significantly increased both preoperative Hb levels and Hb levels at discharge. Conversely, Hb levels at discharge were lower than baseline levels in untreated women. The effect of r-HuEPO on Hb levels was exerted in a dose-dependent fashion. No adverse and/or side effects of treatment were observed. Preoperative treatment with r-HuEPO in selected anemic patients undergo-ing gynecologic surgery for benign diseases seems to be a safe and useful tool to reduce the need for red blood cell transfusions.
The efficacy of pre-operative erythropoietin therapy
East African Medical Journal, 2008
Objective: To determine whether a single weekly low dose of erythropoietin (EPO), haematenics and antimalarials is effective in increasing the pre-operative haemoglobin of patients coming for potential blood losing surgery. Design: A prospective observational study.
Estrategias para la prostatectomía retropúbica radical sin transfusión en testigos de Jehová
Actas Urológicas Españolas, 2010
25 Jehovah's witnesses diagnosed with prostate cancer underwent radical prostatectomy and bilateral iliac and obturator lymphadenectomy. Preoperative hemoglobin boost using erythropoietin aiming at a hemoglobin value over 14 g/dL, normovolemic hemodilution, and availability of a cell salvage machine were provided for blood loss management.
Pharmacokinetics and erythropoietic response to human recombinant erythropoietin in healthy men
Clinical Pharmacology and Therapeutics, 1990
Pharmacokinetics and erythropoietic response to human recombinant erythropoietin in healthy men To assess the safety, pharmacokinetics, and erythropoietic responses to human recombinant erythropoietin (epoetin beta), single intravenous doses (10, 50, 150, and 500 IU / kg) were administered at monthly intervals to 16 healthy subjects in a two-panel, placebo-controlled, double-blind ascending-dose trial. A 1000 IU/ kg dose was subsequently administered in an open manner. Epoetin concentrations were determined in serum and urine by radioimmunoassay. Reticulocyte, hemoglobin, and hematocrit values were serially measured after each dose. Mean epoetin apparent half-lives ranged from 4.42 to 11.02 hours. The apparent volume of distribution was between 40 and 90 ml / kg, consistent with plasma water, and the apparent clearance values ranged from 4 to 15 ml/kg/hr, with both parameters having the highest values at the 10 IU/kg dose level. Clearance tended to decrease as a function of dose. Maximum reticulocyte counts were dose-dependent and occurred 3 to 4 days after the epoetin dose. Epoetin was well tolerated, and no antibodies were detected.
World Journal of Surgery, 1999
In a double-blind placebo-controlled study we investigated the effect of recombinant human erythropoietin (r-HuEPO), on the perioperative hemoglobin concentration and the use of blood transfusions in patients undergoing elective colorectal surgery with a preoperative hemoglobin level <8.5 mmol/L. Altogether 100 were included, and 81 patients could be evaluated. A total of 38 patients received r-HuEPO in a dose of 300 IU/kg body weight on day 4 before surgery and 150 IU/kg daily for the following 7 days; 43 patients received placebo. In addition, all patients received daily doses of 200 mg iron orally for 4 days before surgery. There were no differences between the two groups with regard to sex, height, weight, serum electrolytes, and liver function tests at study entry. The preentry hemoglobin concentration was similar in the two groups, with a median value of 7.9 (range 5.3-8.5) mmol/L in the erythropoietin group and 7.6 (5.1-8.5) mmol/L in the placebo group. On the day of surgery the median hemoglobin concentration was 7.8 (5.3-9.2) mmol/L in the erythropoietin group and 7.2 (4.6-8.5) mmol/L in the placebo group (p < 0.05). On postoperative days 3 and 7 the values were 7.2 (5.3-8.2) and 7.5 (5.4-9.4) mmol/L, respectively, in the erythropoietin group compared to 6.7 (5.2-7.8) and 6.9 (5.1-8.6) mmol/L in the placebo group (p < 0.01). At discharge the hemoglobin concentration was 7.8 (5.9-8.8) mmol/L in the erythropoietin group and 7.2 (5.4-8.6) mmol/L in the placebo group (p < 0.002). The blood loss during operation was similar in the two groups. In the erythropoietin group the median value was 280 ml (range 25-2000 ml), with the lower and upper quartiles 150 and 500 ml, respectively. In the placebo group the blood loss was median 300 ml (range 50-1800 ml), with the lower and upper quartiles 200 and 750 ml, respectively. The number of blood transfusions given was significantly lower in the erythropoietin group, with a mean of 0.3 (range 0-6) units compared to 1.6 (0-9) units in the control group (p < 0.05). In conclusion, the hemoglobin concentration at the time of surgery and during the week following surgery was significantly higher in the group of patients receiving r-HuEPO perioperatively compared to the placebo group together with a significant lower use of blood transfusions in the r-HuEPO group. However, the clinical implications of these findings has yet to be proven.
Erythropoietin deficiency after coronary artery bypass procedures
The Annals of Thoracic Surgery, 1991
Erythropoietin is the primary regulator of erythropoiesis. Erythropoietin has been shown to increase exponentially in response to linear decreases in hematocrit in normal, unstressed animals. However, the effect of operation, with its attendant stress, on erythropoietin levels is unknown. The purpose of this study is to evaluate the effect of surgical stress on erythropoietin. Twenty otherwise healthy patients scheduled for elective surgical procedures were studied. The cholecystectomy group included 10 patients who underwent cholecystectomy for documented stone disease. Ten patients who underwent coronary artery bypass procedures constituted the coronary artery bypass grafting group. Patients were studied preoperatively as well as on the first and second postoperative days. The hematocrit and erythropoietin levels were similar in both groups preoperatively. The hemarythropoietin is the primary regulator of erythropoie-E sis during anemia [l]. Erythropoiesis has been reported to be decreased after surgical procedures [2]. Serum erythropoietin levels increase exponentially in response to linear decreases in hematocrit [3, 41. Erythropoietin levels have been shown to be depressed in a variety of experimental [5, 61 and clinical [7-131 settings. However, the effect of operation and its attendant stress on erythropoietin levels is unknown. The purpose of this study is to evaluate the effect of operation on erythropoietin levels.