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Vol. 57. Issue 3.
Pages 225-236 (January 2005)
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Vol. 57. Issue 3.
Pages 225-236 (January 2005)
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Proteína C reactiva como factor pronóstico de mortalidad en los aneurismas de aorta abdominal rotos
C-Reactive protein as a prognostic factor for mortality in ruptured abdominal aortic aneurysms
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J.C. Bohórquez-Sierraa,
Corresponding author
jcbsierra@terra.es

Unidad de Angiología y Cirugía Vascular. Hospital Universitario Puerta del Mar. Avda.Ana de Viya, 21. E-11009 Cádiz. Fax: +34 95600 2491.
, E. Doiz-Artázcoza, E. Ocañab, A. Craven-Bartlea, M. Rodríguez-Piñeroa, C. Bohórquez-Sierraa
a Unidad de Angiología y Cirugía Vascular.
b Servicio de Inmunología. Hospital Universitario Puerta del Mar. Cádiz, España.
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Resumen

Objetivo. Determinar si el valor plasmático preoperatorio de diversos marcadores biológicos de inflamación –proteína C reactiva (PCR), leucocitos y fibrinógeno– se asocia a la mortalidad de los pacientes con rotura de aneurisma de aorta abdominal (AAA). Pacientes y métodos. Estudio prospectivo de 37 pacientes intervenidos quirúrgicamente de AAA roto. Se extrajo una muestra de sangre periférica a cada uno de ellos para el estudio preoperatorio de los biomarcadores de inflamación. Además, se recogieron datos correspondientes a variables clínicas pre, intra y postoperatorias. Para el análisis de los valores plasmáticos de PCR se utilizó un test convencional (Tina-Quant). Resultados. De los marcadores biológicos de inflamación estudiados, sólo la PCR fue un factor pronóstico de mortalidad perioperatoria, y la mediana fue significativamente superior en los fallecidos en comparación con los supervivientes (p=0,021). Se categorizó la PCR en dos grupos con la utilización como punto de corte el valor obtenido en la curva ROC (3,2mg/dL) para la máxima sensibilidad y especificidad de esta variable con relación a la mortalidad. Los pacientes cuya PCR al ingreso fue >3,2mg/dL tuvieron una mortalidad significativamente mayor que aquellos cuya cifra era <3,2mg/dL (71 frente a 10%) (p=0,002). En el análisis multivariante, las variablespronósticas de mortalidad fueron: valor preoperatorio de PCR, duración del pinzamiento aórtico e inestabilidad hemodinámica durante la intervención. Conclusiones. La elevación de la PCR preoperatoria es un factor pronóstico de mortalidad en los AAA rotos, por lo que puede ser, junto a otros factores previamente identificados, útil para la estratificación del riesgo quirúrgico de estos pacientes. [ANGIOLOGÍA 2005; 57: 225-36]

Keywords:
Aneurisma aórtico
Aterosclerosis
Inflamación
Proteína C reactiva
Proteínas de fase aguda
Ruptura
Summary

Aim. To determine whether the preoperative plasma values of several biological markers of inflammation –C-reactive protein (CRP), leukocytes and fibrinogen– are linked with the mortality of patients with a ruptured abdominal aortic aneurysm (AAA). Patients and methods. We performed a prospective study of 37 patients who had undergone surgery to treat a ruptured AAA. A peripheral blood sample was taken from each of the patients for use in the preoperative study of biomarkers of inflammation. Additionally, data concerning pre, intra and postoperative clinical variables were also collected. A conventional (Tina-Quant) test was used to analyse the CRP values in plasma. Results. Of the biological markers of inflammation studied, only CRP was a prognostic factor for perioperative mortality, and the mean was significantly higher in those who died than in survivors (p = 0.021). CRP was categorised in two groups using a cut-off point taken as the value obtained from the ROC curve (3.2mg/dL) for the maximum sensitivity and specificity of this variable in relation to mortality. Mortality among patients with a CRP on admission ≥ 3.2mg/dL was significantly higher than among those with a figure < 3.2mg/dL (71 versus 10%) (p = 0.002). In the multivariate analysis, the prognostic variables for mortality were: preoperative CRP value, duration of aortic clamping and haemodynamic instability during the intervention. Conclusions. Elevation of preoperative CRP levels is a prognostic factor for mortality in ruptured AAA, which means that, together with other previously identified factors, it may be useful for the stratification of surgical risk in these patients. [ANGIOLOGÍA 2005; 57: 225-36]

Keywords:
Acute phase proteins
Aortic aneurysm
Atherosclerosis
C-reactive protein
Inflammation
Ruptured
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