Carrillo ER, Núñez BJJ, Sánchez GJR

Language: Spanish
References: 26
Page: 198-203
PDF size: 240.82 Kb.

ABSTRACT

Background: Previous studies have demonstrated that blood extraction in a seriously ill patient is a risk factor of anemia. It has been reported that phlebotomy number can be from 5 to 12 daily with an extracted blood volume of 41.5 to 377 mL.
Objective: To evaluate impact of blood extraction as a cause of anemia in a general intensive care unit.
Patients and method: Cohort, prospective, and observational study at the Fundación Clínica Médica Sur intensive care unit; from September 1 to November 31, 2007. Every patient of first admission was included; patients with active bleeding, hemolysis and coagulopathy were excluded; that with no required information were eliminated. Analyzed variables were: blood volume extracted daily, volume by extraction via, and that required for APACHE II and SOFA.
Results: There were 50 patients, and eight were eliminated. Demographic variables show no meaningful difference. Admission hemoglobin was 11.1 g/dL (± 2.56), and it reduces to 10.0 g/dL (± 0.70) within 24 hours, with a p lower than 0.0003. Blood extraction average trough different via was 94.26 mL (± 21.02) within first 24 hours; 41.53 mL (± 14.76) on second day with a p lower than 0.00001; on third day it was 32.70 mL (± 10.76), and on fourth day of 27.62 mL (± 7.02).
Conclusions: Blood extraction is a factor that determines anemia in a critically ill patient, due to this it has to be rationalized in agreement with diagnostic and therapeutic objectives, and with patients’ clinical evaluation.

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