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Curr Gerontol Geriatr Res. 2014;2014:934852. doi: 10.1155/2014/934852. Epub 2014 Feb 17.

The Simplified Acute Physiology Score III Is Superior to the Simplified Acute Physiology Score II and Acute Physiology and Chronic Health Evaluation II in Predicting Surgical and ICU Mortality in the "Oldest Old".

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1
Saint George's University School of Medicine, West Indies, Grenada.
2
Department of Surgery, Saint Barnabas Medical Center, Livingston, NJ, USA.
3
Saint George's University School of Medicine, West Indies, Grenada ; Department of Surgery, Saint Barnabas Medical Center, Livingston, NJ, USA ; Department of Surgery, University of Medicine and Dentistry of New Jersey (UMDNJ), 94 Old Short Hills Road Livingston, Newark, NJ 07039, USA.

Abstract

Elderly patients in the USA account for 26-50% of all intensive care unit (ICU) admissions. The applicability of validated ICU scoring systems to predict outcomes in the "Oldest Old" is poorly documented. We evaluated the utility of three commonly used ICU scoring systems (SAPS II, SAPS III, and APACHE II) to predict clinical outcomes in patients > 90 years. 1,189 surgical procedures performed upon 951 patients > 90 years (between 2000 and 2010) were analyzed. SAPS II, SAPS III, and Acute APACHE II were calculated for all patients admitted to the SICU. Differences between survivors and nonsurvivors were analyzed using the Student's t-test and binary logistic regression analysis. A receiver operating characteristic (ROC) curve was constructed for each scoring system studied. The area under the ROC curve (aROC) for the SAPS III was 0.81 at a cut-off value of 57, whereas the aROC for SAPS II was 0.75 at a cut-off score of 44 and the aROC for APACHE II was 0.74 at a cut-off score of 13. The SAPS III ROC curve for prediction of hospital mortality exhibited the greatest sensitivity (84%) and specificity (66%) with a score of 57 for the "Oldest Old" population.

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