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Effects of high-volume hemofiltration on alveolar- arterial oxygen exchange in patients with refractory septic shock

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World Journal of Emergency Medicine 2011年第2期2卷 127-131页

作者： Hong-sheng Ren Shi-xue Gao Chun-ting Wang Yu-fcng Chu Jin-jiao Jiang Ji-chcng Zhang Mci Mcng Guo-qian Qi Min Ding Intensive Care Unit Provincial Hospital Affiliated to Shandong University Jinan 250021 China Department of Intensive Care Unit Shandong Province Feixian People's Hospital Feixian 273400 China

BACKGROUND:High-volume hemofiltration (HVHF) is technically possible in severe acute pancreatitis (SAP) patients complicated with multiple organ dysfunction syndrome (MODS). Continuous HVHF is expected to become a beneficial adjunct therapy for SAP complicated with MODS. In this study, we aimed to explore the effects of fluid resuscitation and HVHF on alveolar-arterial oxygen exchange, the Acute Physiology and Chronic Health Evaluation II (APACHE II) score in patients with refractory septic shock.;METHODS:A total of 89 refractory septic shock patients, who were admitted to ICU, the Provincial Hospital affiliated to Shandong University from August 2006 to December 2009, were enrolled in this retrospective study. The patients were randomly divided into two groups: fluid resuscitation (group A, n=41), and fluid resuscitation plus high-volume hemofiltration (group B, n=48). The levels of O2 content of central venous blood (CcvO2), arterial oxygen content (CaO2), alveolar-arterial oxygen pressure difference P(A-a)DO2, ratio of arterial oxygen pressure/alveolar oxygen pressure (PaO2/PaO2), respiratory index (RI) and oxygenation index (OI) were determined. The oxygen exchange levels of the two groups were examined based on the arterial blood gas analysis at different times (0, 24, 72 hours and 7 days of treatment) in the two groups. The APACHE II score was calculated before and after 7-day treatment in the two groups.;RESULTS:The levels of CcvO2, CaO2 on day 7 in group A were significantly lower than those in group B (CcvO2: 0.60±0.24 vs. 0.72±0.28, P<0.05; CaO2: 0.84±0.43 vs. 0.94±0.46, P<0.05). The level of oxygen extraction rate (O2ER) in group A on the 7th day was significantly higher than that in group B (28.7±2.4 vs. 21.7±3.4, P<0.01). The levels of P(A-a)DO2 and RI in group B on the 7th day were significantly lower than those in group A. The levels of PaO2/PaO2 and OI in group B on 7th day were significantly higher than those in group A (P<0.05 or P<0.01). The APACH

关键词： Acute Physiology and Chronic Health Evaluation II (APACHE II) Alveolar-arterial oxygen exchange Fluid resuscitation High-volume hemofiltration Oxygen extraction rate Oxygenation index PaO2/PaO2 ratio respiratory index Septic shock

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