F Sanfilippo1, C Corredor2, A Arcadipane1, G Landesberg3, A Vieillard-Baron4,5, M Cecconi6, N Fletcher7. 1. Department of Anaesthesia and Intensive Care, IRCCS-ISMETT (Istituto Mediterraneo per i Trapianti e Terapie ad alta specializzazione), Via Tricomi 5, 90127 Palermo, Italy. 2. Department of Cardiovascular Anaesthesiology and Critical Care, Toronto General Hospital, 200 Elizabeth Street, Toronto, ON M5G 2C4, Canada. 3. Department of Anesthesiology and Critical Care Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, Israel. 4. Assistance Publique-Hôpitaux de Paris, University Hospital Ambroise Paré, Intensive Care Unit, Section Thorax-Vascular Disease-Abdomen-Metabolism, 92100 Boulogne-Billancourt, France. 5. INSERM U-1018, CESP, Team 5 (EpReC, Renal and Cardiovascular Epidemiology), Université Versailles Saint Quentin en Yvelines, 94807 Villejuif, France. 6. Department of Anaesthesia and Intensive Care, St George's Hospital and Medical School, London, UK. 7. Department of Anaesthesia and Critical Care, St Georges University Hospitals NHS Trust, Blackshaw Road, SW17?0QT London, UK.
Abstract
BACKGROUND: Myocardial dysfunction may contribute to circulatory failure in sepsis. There is growing evidence of an association between left ventricular diastolic dysfunction (LVDD) and mortality in septic patients. Utilizing echocardiography, we know that tissue Doppler imaging (TDI) variables e' and E/e' are reliable predictors of LVDD and are useful measurements to estimate left ventricular (LV) filling pressures. METHODS: We conducted a systematic review and meta-analysis to investigate the association of e' and E/e' with mortality of patients with severe sepsis or septic shock. In the primary analysis, we included studies providing transthoracic TDI data for e' and E/e' and their association with mortality. Subgroup analyses were conducted according to myocardial regional focus of TDI assessment (septal, lateral or averaged). Three secondary analyses were performed: one included data from a transoesophageal study, another excluded studies reporting data at a very early (<6 h) or late (>48 h) stage following diagnosis, and the third pooled data only from studies excluding patients with heart valve disease. RESULTS: The primary analysis included 16 studies with 1507 patients with severe sepsis and/or septic shock. A significant association was found between mortality and both lower e' [standard mean difference (SMD) 0.33; 95% confidence interval (CI): 0.05, 0.62; P=0.02] and higher E/e' (SMD -0.33; 95% CI: -0.57, -0.10; P=0.006). In the subgroup analyses, only the lateral TDI values showed significant association with mortality (lower e' SMD 0.45; 95% CI: 0.11, 0.78; P=0.009; higher E/e' SMD -0.49; 95% CI: -0.76, -0.22; P=0.0003). The findings of the primary analysis were confirmed by all secondary analyses. CONCLUSIONS: There is a strong association between both lower e' and higher E/e' and mortality in septic patients.
BACKGROUND: Myocardial dysfunction may contribute to circulatory failure in sepsis. There is growing evidence of an association between left ventricular diastolic dysfunction (LVDD) and mortality in septic patients. Utilizing echocardiography, we know that tissue Doppler imaging (TDI) variables e' and E/e' are reliable predictors of LVDD and are useful measurements to estimate left ventricular (LV) filling pressures. METHODS: We conducted a systematic review and meta-analysis to investigate the association of e' and E/e' with mortality of patients with severe sepsis or septic shock. In the primary analysis, we included studies providing transthoracic TDI data for e' and E/e' and their association with mortality. Subgroup analyses were conducted according to myocardial regional focus of TDI assessment (septal, lateral or averaged). Three secondary analyses were performed: one included data from a transoesophageal study, another excluded studies reporting data at a very early (<6 h) or late (>48 h) stage following diagnosis, and the third pooled data only from studies excluding patients with heart valve disease. RESULTS: The primary analysis included 16 studies with 1507 patients with severe sepsis and/or septic shock. A significant association was found between mortality and both lower e' [standard mean difference (SMD) 0.33; 95% confidence interval (CI): 0.05, 0.62; P=0.02] and higher E/e' (SMD -0.33; 95% CI: -0.57, -0.10; P=0.006). In the subgroup analyses, only the lateral TDI values showed significant association with mortality (lower e' SMD 0.45; 95% CI: 0.11, 0.78; P=0.009; higher E/e' SMD -0.49; 95% CI: -0.76, -0.22; P=0.0003). The findings of the primary analysis were confirmed by all secondary analyses. CONCLUSIONS: There is a strong association between both lower e' and higher E/e' and mortality in septic patients.
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