The results indicate that 100 mg of iron saccharate often leads to transferrin oversaturation and the presence of catalytically active iron within 3.5 h after i.v. injection. As catalytically active iron is potentially toxic and may promote bacterial growth, it may be recommendable to use dosage regimens for i.v. iron that would not cause transferrin oversaturation.

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Eighteen patients with dilated cardiomyopathy (three female, mean age 57 years), were treated for 48 weeks with enalapril added to digoxin and diuretic therapy for congestive heart failure of New York Heart Association (NYHA) functional class II (three patients). III (eight patients) and IV (seven patients), respectively. Serum levels of erythropoietin (EPO) were raised at the start (37 +/- 12.8 pmol 1(-1); mean +/- SD) and were normalized during enalapril treatment (17.5 +/- 9.9 pmol 1(-1) at 48 weeks; P less than 0.001). Serum EPO correlated at the start with NYHA functional class (r = 0.68; P less than 0.05). Normalization of elevated serum EPO concentrations during treatment with enalapril paralleled clinical and haemodynamic improvement, and probably reflected relief from renal hypoxia.

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