Results
A total of 5,925 patients were admitted to our ICU during
the study period. The characteristics of the study group
are presented in Table 1.
Hemoglobin concentrations and outcome
On ICU admission, hemoglobin concentrations were less
than 7 g/dl in 18.7% of patients and between 7 and 9 g/dl
in 29.5% of patients (mean 9.9 g/dl). During the ICU stay,
hemoglobin concentrations were less than 9 g/dl on at
least one occasion in 57.6% of patients. Mean hemoglobin
concentrations decreased or increased towards median
levels of 10 g/dl throughout the first two weeks in the
ICU (Figure 1). Patients with hemoglobin concentrations
less than 9 g/dl on admission to the ICU had higher SAPS
II and SOFA scores than those with higher hemoglobin
concentrations [see Table S1 in Additional file 1]. ICU
and hospital mortality rates were higher and ICU and
hospital lengths of stay were longer in patients with lower
hemoglobin concentrations (Table 2). In patients discharged
from the ICU (n = 5,564), in-hospital mortality
rates were lower in those with higher hemoglobin concentrations
on ICU discharge (< 7, 7 to 9, 9.1 to 11, >11 g/
dl; 7.3, 7.8, 4.0, and 3.8%, respectively, P < 0.001) than
those with lower haemoglobin concentrations. SOFA
scores increased during the first week in the ICU in all
patients [see Figure S1 in Additional file 1]. Patients with
hemoglobin concentrations of more than 11 g/dl had the
lowest SOFA scores during the first week in the ICU
ResultsA total of 5,925 patients were admitted to our ICU duringthe study period. The characteristics of the study groupare presented in Table 1.Hemoglobin concentrations and outcomeOn ICU admission, hemoglobin concentrations were lessthan 7 g/dl in 18.7% of patients and between 7 and 9 g/dlin 29.5% of patients (mean 9.9 g/dl). During the ICU stay,hemoglobin concentrations were less than 9 g/dl on atleast one occasion in 57.6% of patients. Mean hemoglobinconcentrations decreased or increased towards medianlevels of 10 g/dl throughout the first two weeks in theICU (Figure 1). Patients with hemoglobin concentrationsless than 9 g/dl on admission to the ICU had higher SAPSII and SOFA scores than those with higher hemoglobinconcentrations [see Table S1 in Additional file 1]. ICUand hospital mortality rates were higher and ICU andhospital lengths of stay were longer in patients with lowerhemoglobin concentrations (Table 2). In patients dischargedfrom the ICU (n = 5,564), in-hospital mortalityrates were lower in those with higher hemoglobin concentrationson ICU discharge (< 7, 7 to 9, 9.1 to 11, >11 g/dl; 7.3, 7.8, 4.0, and 3.8%, respectively, P < 0.001) thanthose with lower haemoglobin concentrations. SOFAscores increased during the first week in the ICU in allpatients [see Figure S1 in Additional file 1]. Patients withhemoglobin concentrations of more than 11 g/dl had thelowest SOFA scores during the first week in the ICU
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Results
A total of 5,925 patients were admitted to our ICU during
the study period. The characteristics of the study group
are presented in Table 1.
Hemoglobin concentrations and outcome
On ICU admission, hemoglobin concentrations were less
than 7 g/dl in 18.7% of patients and between 7 and 9 g/dl
in 29.5% of patients (mean 9.9 g/dl). During the ICU stay,
hemoglobin concentrations were less than 9 g/dl on at
least one occasion in 57.6% of patients. Mean hemoglobin
concentrations decreased or increased towards median
levels of 10 g/dl throughout the first two weeks in the
ICU (Figure 1). Patients with hemoglobin concentrations
less than 9 g/dl on admission to the ICU had higher SAPS
II and SOFA scores than those with higher hemoglobin
concentrations [see Table S1 in Additional file 1]. ICU
and hospital mortality rates were higher and ICU and
hospital lengths of stay were longer in patients with lower
hemoglobin concentrations (Table 2). In patients discharged
from the ICU (n = 5,564), in-hospital mortality
rates were lower in those with higher hemoglobin concentrations
on ICU discharge (< 7, 7 to 9, 9.1 to 11, >11 g/
dl; 7.3, 7.8, 4.0, and 3.8%, respectively, P < 0.001) than
those with lower haemoglobin concentrations. SOFA
scores increased during the first week in the ICU in all
patients [see Figure S1 in Additional file 1]. Patients with
hemoglobin concentrations of more than 11 g/dl had the
lowest SOFA scores during the first week in the ICU
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