The association between hyponatraemia and long-term functional outcome in patients with aneurysmal subarachnoid haemorrhage: A single centre prospective cohort study.
2020
To assess the association between hyponatraemia and long-term functional outcome and other relevant outcomes in patients with aneurysmal subarachnoid haemorrhage (aSAH) we conducted a prospective cohort study in a Neurosciences Intensive Care Unit (ICU) in Sydney, Australia. The primary exposure variable was hyponatraemia (Na+ 0.99) nor cerebral arterial vasospasm (OR 1.4, 95% CI 0.8 to 2.5, p = 0.27). Those who developed hyponatraemia had a longer median duration of ICU admission (17 days, interquartile range [IQR] 12 to 20, compared to 13 days, IQR 8-21, p = 0.02) and longer median duration of hospital admission (24 days, IQR 21-30, compared to 22 days IQR 14-31, p = 0.05). While hyponatraemia is common following aSAH, it is not associated with worse long-term functional outcome, increased rate of DCI, nor cerebral arterial vasospasm. Hyponatraemia in patients with aSAH was associated with longer duration of ICU and hospital admission.
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