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Table 5 Studies reporting out-of-hospital acquired hypernatremia

From: Undercorrection of hypernatremia is frequent and associated with mortality

  Liamis et al. [15] Arampatzis et al. [1] Arampatzis et al. [2] Baralla et al.
Publication year 2008 2012 2012 2013
Country Greece Switzerland Switzerland France
Department Internal medicine Emergency Emergency Emergency
Hypernatremia definition (mmol/L) > 148 > 142 ≥ 150 ≥ 150
N= 55 400 74 85
Mean age (years) 76.3 ± 12.2 53 ± 22 NA 79.7 ± 14
Males 40% 59% 62% 44%
Mean Na (mmol/L) 160.4 ± 9.9 144 ± 2 152 158 ± 8
Mortality during hospitalization 28% NA 28% 24%
  1. Arampatzis et al. published two studies in the same year. Patients of the second study with hypernatremia defined as ≥150 mmol/L were a subgroup of the former larger study, with an unclassical hypernatremia definition.