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Inicio Revista Española de Anestesiología y Reanimación (English Edition) Vancomycin added to the wash solution of the cell-saver. Effect on bacterial con...
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Vol. 64. Issue 4.
Pages 185-191 (April 2017)
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Vol. 64. Issue 4.
Pages 185-191 (April 2017)
Original article
Vancomycin added to the wash solution of the cell-saver. Effect on bacterial contamination
Adición de vancomicina al suero de lavado del recuperador de sangre. Efecto sobre la contaminación bacteriana
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A. Perez-Ferrera,
Corresponding author
antonioperezferrer@gmail.com

Corresponding author.
, E. Gredilla-Díaza, J. de Vicente-Sáncheza, R. Navarro-Suayb, F. Gilsanz-Rodrígueza
a Servicio de Anestesiología y Reanimación, Hospital Universitario La Paz, Madrid, Spain
b Servicio de Anestesiología y Reanimación, Hospital Central de la Defensa Gómez Ulla, Madrid, Spain
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Tables (4)
Table 1. Demographic characteristics of patients and volumes of recovered and salvaged blood.
Table 2. Haematological parameters of blood samples.
Table 3. Mean, standard deviation and minimum and maximum vancomycin concentration.
Table 4. Measures of association between the introduction of vancomycin and the probability of obtaining a positive culture, compared to control group.
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Abstract
Objectives

The aim of this study is to test whether the addition of a low-dose of antibiotic (vancomycin) to the wash solution (saline) of the cell-saver reduces the incidence of bacterial contamination of the autologous red blood cell (RBCs) concentrate recovered.

Material and method

Experimental, randomized, double-blind, parallel group study performed on 20 consecutive patients scheduled for posterior spinal fusion surgery. Intraoperative bleeding was processed through a cell-saver: HaemoLite® 2+, in which the RBCs were washed according to randomization group, with saline (control group) or saline+10μgml−1 vancomycin (vanco group). Data regarding age, weight, processed and recovered volume, blood count, blood culture, and vancomycin concentration in RBCs concentrates obtained and incidence of fever after reinfusion were collected.

Results

Processed volume was 843±403ml and recovered volume 121±29ml, with haemoglobin concentration 10.4±5.0gdl−1 and haematocrit 29.1±15.9% (mean±SD). Recovered RBC concentrate cultures were positive for coagulase-negative Staphylococcus in 5 cases (50%) of the control group while all cultures were negative in the vanco group (p=0.016). The difference between the theoretical concentration of vancomycin administered and the concentration determined in the recovered RBC concentrate was 1.31μgml−1 (95% CI 1.19–1.43; p=0.074).

Conclusions

The addition of vancomycin at a concentration of 10μgml−1 to the wash solution of the cell-saver achieved similar concentrations in the autologous blood concentrate recovered allowing for bacterial removal, with negative blood cultures in all cases.

Keywords:
Bloodless medical and surgical procedures
Autologous blood transfusion
Intraoperative blood salvage
Scoliosis
Anti-bacterial agents
Vancomycin
Resumen
Objetivos

Comprobar si la adición de bajas dosis de antibiótico (vancomicina) al suero de lavado del recuperador celular reduce la incidencia de contaminación bacteriana del concentrado de hematíes (CH) autógeno recuperado.

Material y método

Estudio experimental, aleatorizado, doble ciego, en forma de grupos paralelos, sobre 20 pacientes consecutivos, programados para cirugía de artrodesis vertebral posterior. La hemorragia intraoperatoria se procesó mediante un recuperador de sangre modelo HaemoLite® 2+, en cuyo proceso los hematíes se lavaron según grupo de aleatorización, con suero fisiológico (grupo control) o con suero fisiológico+10μg/ml−1 de vancomicina (grupo vanco). Se recogieron los datos referentes a edad, peso, volumen procesado y recuperado, hemograma, hemocultivo y concentración de vancomicina del CH obtenido e incidencia de fiebre tras la reinfusión.

Resultados

El volumen procesado fue 843±403ml y el volumen recuperado 121±29ml, con hemoglobina 10,4±5,0g/dl−1 y hematocrito 29,1±15,9% (media±DE). El hemocultivo del CH recuperado fue positivo a Staphylococcus coagulasa negativo en 5 casos (50%) en el grupo control mientras que fue estéril en todos los casos en el grupo vanco (p=0,016). La diferencia entre la concentración teórica de vancomicina administrada y la determinada en CH recuperado fue de 1,31μg/ml−1 (IC 95% 1,19-1,43; p=0,074).

Conclusiones

La adición de vancomicina a una concentración de 10μg/ml−1 en el suero de lavado del recuperador consigue concentraciones similares en la sangre autógena recuperada y permite la eliminación de las bacterias, obteniéndose hemocultivos negativos en todos los casos.

Palabras clave:
Alternativas a la transfusión
Transfusión de sangre autógena
Recuperación de sangre operatoria
Escoliosis
Antibióticos
Vancomicina

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