Uso de heparina sódica en técnicas continuas de depuración extrarrenal

espanolObjetivo: comprobar la relacion que existe entre el uso o no de heparina sodica y la coagulacion de los filtros en tecnicas continuas de depuracion extrarrenal (TCDE). Material y metodo: estudio descriptivo transversal realizado en una Unidad de Cuidados Intensivos (UCI) durante dos anos. Se incluyeron a todos los pacientes que en dicho periodo fueron sometidos a TCDE. Se recogieron variables sociodemograficas, uso de heparina sodica, duracion, motivos de retirada y coagulacion del filtro. Se utilizo estadistica descriptiva e inferencia estadistica mediante la prueba t de Student y U de Mann-Whitney. Resultados: se obtuvo una muestra de 50 pacientes y 162 filtros. En un 66% de los pacientes se utilizo heparina. La media de duracion del filtro con heparina fue 27,1 horas frente a las 19 horas en los no se utilizo (p= 0,004). El principal motivo de retirada de los filtros fue la coagulacion, tanto en los que se uso heparina (71%), como en los que no se uso (70%). Conclusiones: la utilizacion de heparina sodica en TCDE aumenta la vida media del filtro. La coagulacion del filtro es el motivo de retirada mas habitual. El uso de heparina sodica conlleva un retraso en la coagulacion del filtro. EnglishObjective: to confirm the relationship existing between using or not using sodium heparine and filter clotting in Continuous Extrarenal Depuration Techniques (CEDTs). Materials and method: a transversal descriptive study conducted in the Intensive Care Unit (ICU) during two years. All patients who underwent CEDT during that period were included in the study. Sociodemographic variables were collected, as well as the use of sodium heparine, duration, reasons for removal, and filter clotting. Descriptive statistics and statistical inference were used, through Student�s t Test and Mann-Whitney U Test. Results: a sample of 50 patients and 162 filters was obtained. Heparine was used in 66% of patients. The mean duration of the filter with heparine was 27.1 vs. 19 hours in those were it was not used (p= 0.004). The main reason for removing filters was clotting, both for those where heparine was used (71%), and for those where it was not used (70%). Conclusions: the use of sodium heparine in CEDT increases the mean life of the filter. Filter clotting is the most usual reason of removal. The use of sodium heparine entails a delay in filter clotting.