22.11.2013 Views

Formato pdf - Infomed

Formato pdf - Infomed

Formato pdf - Infomed

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Revista Cubana de Angiologìa y Cirugía Vascular.2010; 11(1)34-42<br />

determinaciones. La calibración del reactivo Thrombotest demostró su elevada<br />

sensibilidad calculada localmente.<br />

CONCLUSIONES: Se introdujo la forma correcta de expresión de los resultados del<br />

tiempo de protrombina, así como se estandarizó el uso de un reactivo de alta<br />

sensibilidad, necesario para el control del tratamiento con cumarínicos. Se introdujo<br />

un sistema adecuado de control de calidad interno.<br />

Palabras clave: control del tratamiento anticoagulante oral, tiempo de<br />

protrombina, control de calidad.<br />

ABSTRACT<br />

OBJECTIVE: To develop the bases for to guarantee the laboratory standardization<br />

to obtain the technique quality in the analytical phase of oral anticoagulants<br />

treatment control.<br />

METHODS: The prothrombin times were performed by manual and automated<br />

method using two coagulometers and the reactant Thrombotest. The quality control<br />

was performed using the commercial AK anticoagulation plasma and the<br />

anticoagulation plasma obtained in laboratory. Tests of reproducibility and<br />

repeatability were carried out and the reference value of the Standardization<br />

International Ratio, as well as the coagulation activity percentage. The reactant<br />

Thrombotest was locally calibrated using the lyophilization plasmas using the<br />

coagulometers. The reference curves were plotted and its sensitivity was<br />

graphically estimated.<br />

RESULTS: The prothrombin times were expressed in terms of the Standardized<br />

International Ratio. The accuracy and precision were demonstrated in the<br />

determinations. The calibration of reactant Thrombotest showed its locally<br />

estimated high sensitivity.<br />

CONCLUSIONS: The correct way of prothrombin time results expression was<br />

introduced, and the standardization of use of a high sensitivity reactant needed for<br />

treatment control of coumarin anticoagulants, as well as a appropriate system of<br />

internal quality control.<br />

Key words: Oral anticoagulant treatment control, prothrombin time, quality<br />

control.<br />

INTRODUCCIÓN<br />

Para evitar la aparición de episodios tromboembólicos se utilizan los<br />

anticoagulantes orales (ACO) o derivados cumarínicos, los cuales llevan implícito en<br />

su uso un elevado riesgo hemorrágico, o por el contrario, problemas que derivan<br />

del fracaso de la terapéutica. Esto es debido al estrecho margen que existe entre<br />

dosis que son insuficientes, las adecuadas y las que resultan excesivas, y además a<br />

la variabilidad individual en la respuesta al medicamento. Es por esta razón que se<br />

hace necesaria una vigilancia estrecha y periódica del paciente anticoagulado. 1<br />

El control del tratamiento con anticoagulantes orales consta de tres partes<br />

vinculadas estrechamente entre sí: el control de laboratorio, el control terapéutico y<br />

http://scielo.sld.cu<br />

35

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!