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Rigshospitalet - en del af Københavns Universitetshospital
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Hypozincaemia is associated with severity of aneurysmal subarachnoid haemorrhage: a retrospective cohort study

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BACKGROUND: Hypozincaemia may develop in critically ill patients, including those with acute brain injury in the early phase after hospital admission. The aim of this study was to investigate the prevalence of hypozincaemia after aneurysmal subarachnoid haemorrhage (aSAH) and its association with delayed cerebral ischemia and functional outcome.

METHODS: We retrospectively analysed a cohort of 384 patients with SAH admitted to the Neurointensive Care Unit at Rigshospitalet, Copenhagen, Denmark, in whom at least one measurement of plasma zinc concentration was done during the hospital stay. Hypozincaemia was defined as at least one measurement of plasma zinc below 10 μmol/L. Potential associations between hypozincaemia, demographic variables and functional outcome after aSAH were analysed in multivariable logistic regression models.

RESULTS: Hypozincaemia was observed in 67% (n = 257) of all patients and occurred within 7 days in more than 95% of all hypozincaemic patients. In a multivariable model, severe SAH (WFNS 3-5; OR 4.2, CI 2.21-8.32, p < 0.001) and Sequential Organ Failure Assessment (SOFA) score on the day of admission (OR 1.24, CI 1.11-1.40, p < 0.001) were independently associated with hypozincaemia. In another multivariable model, hypozincaemia was independently associated with an unfavourable outcome (defined as a modified Rankin Scale score from 3 to 6) (OR 1.97, CI 1.06-3.68, p = 0.032), as was age (OR 1.03, CI 1.01-1.05, p = 0.015), SOFA score on the day of admission (OR 1.14, CI 1.02-1.29, p = 0.02), a diagnosis of delayed cerebral ischaemia (OR 4.06, CI 2.29-7.31, p < 0.001) and a clinical state precluding assessment for delayed cerebral ischaemia (OR 15.13, CI 6.59-38.03, p < 0.001).

CONCLUSION: Hypozincaemia occurs frequently after aSAH, is associated with a higher disease severity and independently contributes to an unfavourable outcome.

OriginalsprogEngelsk
TidsskriftActa Neurochirurgica
Vol/bind162
Udgave nummer6
Sider (fra-til)1417-1424
Antal sider8
ISSN0001-6268
DOI
StatusUdgivet - jun. 2020

ID: 60069043