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Medicina (Buenos Aires)

versión On-line ISSN 1669-9106


TRIMARCHI, Hernán et al. Acute kidney injury in severe sepsis. Medicina (B. Aires) [online]. 2009, vol.69, n.3, pp. 321-326. ISSN 1669-9106.

Sepsis affects 40% of critically ill patients, with a reported mortality of approximately 30% in severe sepsis, raising to 75% when acute kidney injury ensues, which occurs in about 20-51% of cases. The present study consists on a one-year prospective, observational, longitudinal trial undergone in 80 severe septic patients to determine the risk of development of acute kidney injury and its relationship with mortality; the association of the clinical course and blood parameter variations with mortality; the severe sepsis mortality rate; an eventual correlation between death and septic focus, and to assess mortality predictibility based on initial creatinine levels and final variations. Two groups were defined: Dead (n=25) and Not-dead (n=55). According to creatinine on admission, 39 subjects presented with normal creatinine levels (10 deaths) and 41 presented elevated creatinine measurements (15 deaths); regarding final creatinine levels, 48 presented normal levels and 7 patients died, while 32 developed acute kidney injury, with 18 deaths. Of the total of 25 deaths, 72% presented renal injury. Seven alive patients and 2 deceased patients required hemodialysis. The most frequent primary septic focus was the airway (26.4%). The development of kidney injury is a high predictor of mortality in sepsis, independent of initial serum creatinine levels. Older patients, hypertension, a higher APACHE score, a more severe degree of anemia, hypoalbuminemia, hyperphosphatemia and hyperkalemia were associated with a higher mortality rate. The global mortality was: 31.3%. The failure to identify the primary septic focus was associated with higher mortality. The respiratory focus was related with a higher risk to require hemodialysis.

Palabras clave : Sepsis; Acute kidney injury; Creatinine; Mortality; APACHE; Hemodialysis.

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