Evolution of Blood Lactate and 90-Day Mortality in Septic Shock. A Post Hoc Analysis of the Finnaki Study.

Varis, Elina; Pettilä, Ville Yrjö Olavi; Poukkanen, Meri; Jakob, Stephan; Karlsson, Sari; Perner, Anders; Takala, Jukka; Wilkman, Erika (2017). Evolution of Blood Lactate and 90-Day Mortality in Septic Shock. A Post Hoc Analysis of the Finnaki Study. Shock, 47(5), pp. 574-581. Lippincott Williams & Wilkins 10.1097/SHK.0000000000000772

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Hyperlactatemia predicts mortality in patients with sepsis and septic shock, and its normalization is a potential treatment goal. We investigated the association of blood lactate and its changes over time with 90-day mortality in septic shock. We performed a post hoc analysis of 513 septic shock patients with admission blood lactate measurements in the prospective, observational, multicenter FINNAKI study. Repetitive lactate measurements were available in 496 patients for analyses of change in lactate values during ICU stay.The 90-day mortality for all patients was 33.3%. Patients with admission lactate > 2 mmol/L had higher 90-day mortality than those with admission lactate ≤ 2 mmol/L (43.4% vs. 22.6%, p < 0.001). Patients with persistent hyperlactatemia (> 2 mmol/L) at ≥ 72 hours had higher 90-day mortality compared to those with a lactate value of ≤ 2.0 mmol/L (52.0% vs. 24.3%, p < 0.001). Time-weighted mean lactate values were higher in non-survivors than in survivors, (median [IQR] 2.05 [1.38-4.22] mmol/L vs. 1.29 [0.98-1.77] mmol/L, p < 0.001). Time to normalization of lactate was comparable for 90-day non-survivors and survivors (median [IQR] 17.0 [3.5-43.5] vs. 15.0 [5.0-35.0] hours, p = 0.67). In separate models, time-weighted mean lactate, lactate value at ≥ 72 hours, and hyperlactatemia at ≥ 72 hours were independently associated with 90-day mortality, but admission lactate and time to normalization of lactate were not. These findings may inform future clinical trials using combined surrogate endpoints for mortality in septic shock patients.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Intensive Care, Emergency Medicine and Anaesthesiology (DINA) > Clinic of Intensive Care
UniBE Contributor:	Pettilä, Ville Yrjö Olavi, Jakob, Stephan, Takala, Jukka
Subjects:	600 Technology > 610 Medicine & health
ISSN:	1073-2322
Publisher:	Lippincott Williams & Wilkins
Language:	English
Submitter:	Mirella Aeberhard
Date Deposited:	09 Jan 2017 13:11
Last Modified:	05 Dec 2022 14:59
Publisher DOI:	10.1097/SHK.0000000000000772
PubMed ID:	27755509
URI:	https://boris.unibe.ch/id/eprint/89850