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Rev Hematol Mex 2012; 13 (4)
Gallardo-García MB, Gallardo-Pedrajas F, Cabra-Bellido MJ, Sánchez-Gallegos P, Bondia-Navarro JA
Language: Spanish
References: 47
Page: 153-164
PDF size: 262.60 Kb.
ABSTRACT
Background: Anemias are blood disorders most often seen in critically ill patients admitted to intensive care units. The most frequent
causes are the type iron deficiency and anemia of chronic disease. Parenteral iron therapy, with / without recombinant human erythropoietin
as a therapeutic alternative to allogeneic blood transfusions can be beneficial in these patients, avoiding the need and complications of
blood transfusion.
Objective: To prevent allogeneic blood transfusions (TSA) and post-transfusion complications in critically ills patients admitted to the ICU
and to promote other alternative therapies.
Patients and methods: We studied 167 patients admitted to the Intensive Care Unit (ICU), 150 of them underwent surgical treatment
of his basic pathologic process (cancer) and 17 septic patients, 11 of them were operated urgently due to infections severe (peritonitis,
mediastinitis, cellulitis ...) and 6 patients with medical septic etiology (bacterial meningitis caused by Gram. (+), Gram. (-), fungi).
All patients were being admitted to the unit, we made complete blood count (formula and cell count), serum iron, ferritin, transferrin, transferrin
saturation index (TSI) and red cell index and performed classical score Acute Physiology and Chronic Health Evaluation II (APACHE II).
The sample was split into two groups: surgical patients (n = 150) and septic patients (n = 17).
Results. Anemia (hemoglobin ‹ 12.5 g/dL) was found in 60.4% of all patients, 89 surgical patients (89/150, 59.3%) and 12 septic patients
(12/17, 70.5%).The severity of anemia was 18 patients with severe anemia (hemoglobin < 10 g/dL and 83 patients with moderate anemia
(hemoglobin between 10 and 12.4 g/ dL). In the group of surgical patients, along with laboratory findings of anemia, was observed also
low iron levels (serum iron), transferrin, transferrin saturation (SAT %) and low, normal or high serum ferritin.
In septic patients, referred with anemia, we found low levels of iron, transferrin, SAT%, and very high serum ferritin levels in relation to
the surgical group. (p ‹ 0.0001). Four patients received transfusion of packed red blood cells, with mean hemoglobin pre-transfusion of
8.7 g/dL, without any post-transfusion complications. Ferroterapic treatment was performed (200 mg of iron in continuous perfusion for 90
minutes) in 9 anemic surgical patients (9/89: 10.1%) with very low levels of ferritin (mean ferritin plasma 16 ± 7 ng / mL) and low SAT%
(‹ 20%) noting improvement in hemoglobin the order of 0.6 to 0.7 g/dL, without any complications to treatment.
No ferroterapic treatment was performed in anemic septic patients, with low SAT% (‹ 20%) with mean ferritin levels very high (476 ± 351 ng / mL).
Other findings was the low iron levels in surgical patients (66.3%) and septic (75%), the presence of functional iron deficiency (FID) in 19%
and 66.7 % of surgical and septic patients, respectively, and the presence of mixed type anemia (F.A + A.E.C) in anemic patients (26.9%)
and septic patients groups (8.3%).
The APACHE II, the mean age and stay of septic patients was significantly higher (p ‹ 0.0001) than the group of surgical patients.
Four patients died, two in the surgical group and two in the septic group, who’s APACHE II and mean hospital stay was greater than that
of the survivors.
Conclusions: Anemia’s are a very common problem in critically ills patients admitted to UCI´s, basically iron deficiency anemia (A.F) or
anemia of critically ill patients (A.P.C), hematologically similar to the anemia of chronic disease (A.E.C). As a therapeutic alternative to
allogeneic blood transfusions (TSA), ferroterapic treatment, (with / without recombinant human erythropoietin) can prevent or reduce the
transfusion requirements in anemic patients admitted to the ICU, avoiding the needs and complications of red blood cells transfusion,
considering this treatment a valid and correct therapeutic option.
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