• Crit Care · Jan 2009

    Prevalence of endotoxemia after surgery and its association with ICU length of stay.

    • Franco Valenza, Lorella Fagnani, Silvia Coppola, Sara Froio, Francesca Sacconi, Cecilia Tedesco, Micol Maffioletti, Marta Pizzocri, Valentina Salice, Maria Luisa Ranzi, Cristina Marenghi, and Luciano Gattinoni.
    • Dipartimento di Anestesia, Rianimazione (Intensiva e Subintensiva) e Terapia del Dolore, Fondazione IRCCS - Ospedale Maggiore Policlinico Mangiagalli Regina Elena, 20122 Milano, Italy. franco.valenza@unimi.it
    • Crit Care. 2009 Jan 1; 13 (3): R102.

    IntroductionThe aim of this observational study was to investigate the prevalence of endotoxemia after surgery and its association with ICU length of stay.Methods102 patients admitted to a university ICU after surgery were recruited. Within four hours of admission, functional data were collected and APACHE II severity score calculated. Arterial blood samples were taken and endotoxemia was measured by chemiluminescence (Endotoxin Activity (EA)). Patients were stratified according to their endotoxin levels (low, intermediate and high) and according to their surgical procedures. Differences between endotoxin levels were assessed by ANOVA, accepting P < 0.05 as significant. Data are expressed as mean +/- SD.ResultsEA levels were low in 68 (66%) patients, intermediate in 17 (17%) and high in 17 (17%). Age (61 +/- 17 years) and APACHE II score 8.3 +/- 3.7 (P = 0.542) were not significantly different in the three EA groups. Functional parameters on admission were similar between EA groups: white blood cells 11093 +/- 4605 cells/mm3 (P = 0.385), heart rate 76 +/- 16 bpm (P = 0.898), mean arterial pressure 88.8 +/- 13.6 mmHg (P = 0.576), lactate 1.18 +/- 0.77 mmol/L (P = 0.370), PaO2/FiO2 383 +/- 109 mmHg (P = 0.474). Patients with high levels of EA were characterized by longer length of stay in the ICU: 1.9 +/- 3.0 days in the low EA group, 1.8 +/- 1.4 days in intermediate and 5.2 +/- 7.8 days in high group (P = 0.038).Conclusions17% of our patients were characterized by high levels of endotoxemia as assessed by EA assay, despite their low level of complexity on admission. High levels of endotoxin were associated with a longer ICU length of stay.

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