Patients with chronic heart failure of New York Heart Association Class II or III, a left ventricular ejection fraction of = 40% for patients in NYHA class II or = 45% for patients in NYHA class III, a hemoglobin level at the screening visit between 9.5-13.5 g/dl, and iron deficiency, which is defined as serum ferritin level < 100µg/l or between 100 and 299 µg/l, when transferring saturation is < 20%.
Age =18 years
Obtained informed consent
Stable pharmacological therapy during the last 4 weeks (with the exception of diuretics)

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Condition
chronic heart failure
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Measurement
New York Heart Association
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Value
Class II or III
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Measurement
left ventricular ejection fraction
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Value
= 40%
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Measurement
NYHA
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Value
class II
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Measurement
NYHA
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Value
class III
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Value
= 45%
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Scope
NYHA class III
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Scope
NYHA class II
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Scope
= 40% for patients in NYHA class II or = 45% for patients in NYHA class III
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Measurement
hemoglobin level
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Temporal
at the screening visit
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Reference_point
the screening visit
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Value
between 9.5-13.5 g/dl
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Condition
iron deficiency
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Measurement
serum ferritin level
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Value
< 100µg/l
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Value
between 100 and 299 µg/l
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Scope
< 100µg/l or between 100 and 299 µg/l
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Measurement
transferring saturation
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Value
< 20%
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Scope
serum ferritin level < 100µg/l or between 100 and 299 µg/l, when transferring saturation is < 20%
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Person
Age
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Value
=18 years
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Procedure
pharmacological therapy
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Qualifier
Stable
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Temporal
during the last 4 weeks
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Reference_point
last 4 weeks
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Drug
diuretics
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Negation
with the exception of