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Table 3 Summary of the association between hypernatremia and clinical outcomes

From: Aneurysmal subarachnoid hemorrhage: intensive care for improving neurological outcome

Article

Study design

Definition of hypernatremia (mmol/L)

Number of patient with hypernatremia/total number of patients

In-hospital mortality

Delayed cerebral ischemia

Neurological outcome

Qureshi AI 2002 [68]

Post hoc analysis of RCT

> 145

58/298 (19.5%)

NA

NA

Worse at 3 months

Wartenberg KE 2006 [69]

Post hoc analysis of single-center, prospective cohort study

> 150

91/576 (15.8%)

NA

NA

Not significant at 3 months

Fisher LA 2006 [70]

Post hoc analysis of single-center, prospective cohort study

> 143

48/214 (22.4%)

Not significant

NA

NA

Beseoglu K 2014 [67]

Single-center, retrospective cohort study

> 145

82/264 (31.1%)

NA

NA

Worse at 12 months

Lantigua H 2015 [71]

Post hoc analysis of single-center, prospective cohort study

> 150

250/1200 (20.8%)

Higher

NA

NA

Spatenkova V 2017 [72]

Single-center, retrospective and prospective observational study

> 150

41/334 (11.9%)

Higher

NA

Worse at 12 months

Okazaki T 2017 [60] a

Single-center, retrospective observational study

≧ 145

40/131 (30.5%)

NA

NA

Worse at hospital discharge

  1. NA not applicable
  2. aResult from additional data analysis