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Department of Internal Medicine, St Jamess Hospital, Dublin 8, Ireland





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Abstract Healthcare systems in the developed world are struggling with the demand of emergency room presentations; the study of the factors driving such demand is of fundamental importance. From a database of all emergency medical admissions 66,933 episodes in 36,271 patients to St James’ Hospital, Dublin, Ireland, over 12 years 2002 to 2013 we have explored the impact of hyponatraemia on outcomes 30 days in-hospital mortality, length of stay LOS and costs. Identified variables, including Acute Illness Severity, Charlson Co-Morbidity and Chronic Disabling Disease that proved predictive univariately were entered into a multivariable logistic regression model to predict the bivariate of 30 days in-hospital survival. A zero truncated Poisson regression model assessed LOS and episode costs and the incidence rate ratios were calculated. Hyponatraemia was present in 22.7% of episodes and 20.3% of patients. The 30 days in-hospital mortality rate for hyponatraemic patients was higher 15.9% vs. 6.9% p < 0.001 and the LOS longer 6.3 95% CI 2.9, 12.2 vs. 4.0 95% CI 1.5, 8.2 p < 0.001. Both parameters worsened with the severity of the initial sodium level. Hospital costs increased non-linearly with the severity of initial hyponatraemia. Hyponatraemia remained an independent predictor of 30 days in-hospital mortality, length of stay and costs in the multi-variable model. View Full-Text

Keywords: hyponatraemia; mortality; length of stay; emergency admission hyponatraemia; mortality; length of stay; emergency admission





Autor: Richard Conway, Declan Byrne, Deirdre ORiordan and Bernard Silke *

Fuente: http://mdpi.com/



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