Abstract
Background: Endocrine alterations of the hypothalamic-pituitary-axis are one of the first measurable physiological changes in cerebral insults. During acute stress, human growth hormone (GH) is stimulated and has shown to have a prognostic value in various diseases. Within this pilot study, we evaluated the prognostic value of GH in patients with acute intracerebral hemorrhage (ICH).Methods: In a prospective observational study in 40 consecutive patients with ICH, GH was measured on admission. The prognostic value of GH to predict 30-day mortality and 90-day functional outcome was assessed. Favorable functional outcome was defined as Barthel Index score >85 points and Modified Rankin Scale <3 points.Results: GH levels were increased in patients who died within 30 days as compared to survivors (0.45 (IQR 0.20–1.51) vs. 1.51 (IQR 0.91–4.08) p = 0.03), and in patients with an unfavorable functional outcome as compared to patients with a favorable functional outcome after 90 days 0.28 (IQR 0.16–0.61) vs. 0.78 (IQR 0.31–1.99) p = 0.03). For mortality prediction, receiver-operating-characteristics revealed an area under the curve (AUC) on admission for GH of 0.78 (95% CI 0.60–0.96), which was in the range of the Glasgow Coma Score (GCS) (AUC 0.82 (95% CI 0.59–1.00) p = 0.80). For functional outcome prediction, GH had an AUC of 0.71 (95% CI 0.54–0.87), which was statistically not different from the GCS (AUC 0.81 (95% CI 0.68–0.94) p = 0.36).Conclusions: In our small cohort of patients with acute ICH, elevated GH level were associated with increased mortality and worse outcome. If confirmed in a larger study, GH levels may be used as an additional prognostic factor in ICH patients. (ClincalTrials.gov number NCT00390962).
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