Outcomes of post-cardiac surgery patients with persistent hyperlactatemia in the intensive care unit: a matched cohort study.

A peak in lactate at >30 h postoperatively was a highly significant risk factor for death in our population.

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Comparative analysis of non-survivors and survivors in the matched-control population showed that preoperative renal failure, severe peripheral vascular disease and reoperation were associated with mortality while age and congestive heart failure approached significance (Table 3 ).

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