Artikel
Early lactate levels after aneurysmal subarachnoid hemorrhage correlate with functional neurological outcome – a single center series
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Veröffentlicht: | 18. Juni 2018 |
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Objective: High lactate levels are known predictors of poor outcome in critically ill patients. However, the potential contribution of early lactate in patients suffering from aneurysmal subarachnoid hemorrhage (aSAH) to neurological outcome is sparse. Therefore, we analyzed our neurovascular database to assess the relationship between early lactate levels and functional outcome after aSAH.
Methods: 376 patients with aSAH were treated between January 2011 and December 2016. Information, including patient characteristics, treatment modality, aneurysm size and location, laboratory values, radiological features and functional neurological outcome were assessed and further analyzed. Patients suffering from aSAH were divided into "low lactate on admission" (lactate <2.0 mmol/l) and "high lactate on admission" (lactate ≥2.0 mmol/l). The outcome was assessed according to the modified Rankin Scale (mRS) at 6 months and stratified into favourable (mRS 0-2) versus unfavourable (mRS 3-6).
Results: Patients with aSAH and initial lactate levels <2.0 mmol/l were significantly more likely to achieve a favourable outcome compared to patients with lactate levels ≥2.0 mmol/l (82% vs. 18%; p<0.001). Patients suffering from poor-grade aSAH had significantly higher levels of initial lactate, when compared to patients with good-grade aSAH (p=0.004). In the multivariate analysis, lactate levels ≥2mmol/l (p=0.04, OR 2, 95% CI 1-3.9), and poor grade patients (WFNS IV-V, p=0.001, OR 8.9, 95% CI 5.4-15) were independent predictors of unfavourable outcome.
Conclusion: Elevated lactate levels are independently associated with unfavourable functional neurological outcome in aSAH.