Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Jul 2014
Fatal injury caused by low-energy trauma - a 10-year rural cohort.
Death after injury with low energy has gained increasing focus lately, and seems to constitute a significant amount of trauma-related death. The aim of this study was to describe the epidemiology of deaths from low-energy trauma in a rural Norwegian cohort. ⋯ In this cohort, low-energy trauma was a significant contributor to trauma related death, especially among elderly and patients with pre-existing medical conditions.
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Acta Anaesthesiol Scand · Jul 2014
A calibration study of SAPS II with Norwegian intensive care registry data.
Mortality prediction is important in intensive care. The Simplified Acute Physiology Score (SAPS) II is a tool for predicting such mortality. However, the original SAPS II is poorly calibrated to current intensive care unit (ICU) populations because it draws on data, which is more than 20 years old. We aimed to improve the calibration of SAPS II using data from the Norwegian Intensive Care Registry (NIR). This is the first recalibration of SAPS II for Nordic data. ⋯ As expected, Model B is better calibrated than Model A, and both models have similar uniformity of fit and equal discrimination. Introducing Model B into Norwegian ICUs may improve precision in decision-making. Units will have a more realistic benchmark for the assessment of ICU performance. Mortality risk estimates from Model B are better than previous SAPS II estimates have been.
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Acta Anaesthesiol Scand · Jul 2014
Hyperoxia affects the regional pulmonary ventilation/perfusion ratio: an electrical impedance tomography study.
The way in which hyperoxia affects pulmonary ventilation and perfusion is not fully understood. We investigated how an increase in oxygen partial pressure in healthy young volunteers affects pulmonary ventilation and perfusion measured by thoracic electrical impedance tomography (EIT). ⋯ These results indicate that breathing increased concentrations of oxygen induces pulmonary vasodilatation in the dorsal lung even at small increases in FiO2. Ventilation remains unchanged. Local mismatch of ventilation and perfusion occurs in young healthy men, and the change in ventilation/perfusion ratio can be determined non-invasively by EIT.