Wei-Ting Chang1, Wen-Huang Lee2, Wei-Ting Lee2,3, Po-Sheng Chen2,3, Yu-Ru Su4, Ping-Yen Liu2, Yen-Wen Liu5, Wei-Chuan Tsai6. 1. Division of Cardiology, Department of Internal Medicine, Chi-Mei Medical Center, Tainan, Taiwan. 2. Division of Cardiology, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd. North District, Tainan, 704, Taiwan. 3. Division of Intensive Care Medicine, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan. 4. Biostatistics, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA. 5. Division of Cardiology, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd. North District, Tainan, 704, Taiwan. wen036030@gmail.com. 6. Division of Cardiology, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng-Li Rd. North District, Tainan, 704, Taiwan. wctsai@ksmail.seed.net.tw.
Abstract
PURPOSE: Conventional echocardiography may not detect subtle cardiac dysfunction of septic patients. Two-dimensional left ventricular (LV) global peak systolic longitudinal strain (GLS) can detect early cardiac dysfunction. We sought to determine the prognostic value of GLS for septic shock patients admitted to intensive care units (ICUs). METHODS: We prospectively included 111 ICU patients with septic shock. A full medical history was recorded for each patient, and LV systolic function, including GLS, was measured. Our endpoints were ICU and hospital mortality. RESULTS: The ICU and hospital mortalities were 31.5% (n = 35) and 35.1% (n = 39), respectively. There was no significant difference in LV ejection fraction of the non-survivors and the survivors; however, upon ICU admission, the non-survivors exhibited GLSs that were less negative than those of the survivors, which indicated worse LV systolic function. GLS of -13% presented the best sensitivity and specificity in the prediction of mortality (area under the curve 0.79). The patients with GLS ≥ -13% exhibited higher ICU and hospital mortality rates (hazard ratio 4.34, p < 0.001 and hazard ratio 4.21, p < 0.001, respectively). Cox regression analyses revealed that higher Acute Physiology and Chronic Health Evaluation (APACHE) II scores and less negative GLSs were independent predictors of ICU and hospital mortalities. GLS was found to add prognostic information to the APACHE II score. CONCLUSIONS: These findings suggest that combining GLS and the APACHE II score has additive value in the prediction of ICU and hospital mortalities and that GLS may help in early identification of high-risk septic shock patients in ICU.
PURPOSE: Conventional echocardiography may not detect subtle cardiac dysfunction of septicpatients. Two-dimensional left ventricular (LV) global peak systolic longitudinal strain (GLS) can detect early cardiac dysfunction. We sought to determine the prognostic value of GLS for septic shockpatients admitted to intensive care units (ICUs). METHODS: We prospectively included 111 ICU patients with septic shock. A full medical history was recorded for each patient, and LV systolic function, including GLS, was measured. Our endpoints were ICU and hospital mortality. RESULTS: The ICU and hospital mortalities were 31.5% (n = 35) and 35.1% (n = 39), respectively. There was no significant difference in LV ejection fraction of the non-survivors and the survivors; however, upon ICU admission, the non-survivors exhibited GLSs that were less negative than those of the survivors, which indicated worse LV systolic function. GLS of -13% presented the best sensitivity and specificity in the prediction of mortality (area under the curve 0.79). The patients with GLS ≥ -13% exhibited higher ICU and hospital mortality rates (hazard ratio 4.34, p < 0.001 and hazard ratio 4.21, p < 0.001, respectively). Cox regression analyses revealed that higher Acute Physiology and Chronic Health Evaluation (APACHE) II scores and less negative GLSs were independent predictors of ICU and hospital mortalities. GLS was found to add prognostic information to the APACHE II score. CONCLUSIONS: These findings suggest that combining GLS and the APACHE II score has additive value in the prediction of ICU and hospital mortalities and that GLS may help in early identification of high-risk septic shockpatients in ICU.
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