BMC cardiovascular disorders · 2026
Association of left ventricular end-systolic volume with peri-echocardiographic acute kidney injury proxy beyond ejection fraction: a retrospective linked echocardiographic cohort study.
СтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Isleyen Hasan Burak, Tugrul Yavuz Sevil, Bulut Sercan, Kizkapan Fatih, Alioglu Cevahir, Eren Necla Zeynep, Sozen Ali Arda, Khanmohammadi Mahsa
Аннотация
BACKGROUND: Left ventricular ejection fraction (LVEF) remains the default echocardiographic summary of systolic performance, yet its ratio structure makes it sensitive to geometry and loading conditions. Left ventricular end-systolic volume (LVESV) may capture adverse remodeling more directly. The relation of LVESV to peri-echocardiographic renal dysfunction in hospitalized patients remains uncertain.
METHODS: This retrospective linked echocardiographic cohort study analyzed 1,022 complete biplane studies from 784 patients in the credentialed PhysioNet MIMIC-IV-ECHO-Ext-LVVOLUMES-A4C-ROI resource linked to MIMIC-IV v3.1 clinical tables. The primary endpoint was an acute kidney injury (AKI) proxy defined as maximum serum creatinine ≥ 2.0 mg/dL within a ± 24-hour peri-echocardiographic window. Hierarchical logistic regression with patient-level cluster-robust standard errors included age, sex, first-day SOFA score, and vasopressor exposure; 5 chained-equation imputations addressed missing SOFA. Temporal analysis compared echocardiography time with the first creatinine value meeting the endpoint threshold.
RESULTS: AKI proxy was present in 80 of 1,022 studies (7.8%). Among these 80 studies, 73 (91.3%) reached the creatinine threshold before echocardiography and 7 (8.8%) after echocardiography. For AKI proxy, LVESV showed modestly higher discrimination than LVEF (AUC 0.572 vs. 0.548; ΔAUC 0.024; p = 0.253). In the fully adjusted hierarchical model, LVESV remained associated with AKI proxy (OR 1.40 per SD increase, 95% CI 1.10-1.78; p = 0.006), whereas LVEF did not (OR 0.83 per SD decrease, 95% CI 0.62-1.10; p = 0.188). Model 3 yielded the highest C-statistic (0.727) and the lowest AIC (517.0), but BIC was not improved and reclassification gains were modest.
CONCLUSIONS: LVESV was associated with peri-echocardiographic AKI proxy after severity adjustment, but the temporal analysis indicates that the signal predominantly reflected concurrent renal illness rather than prospective prediction. Any incremental value beyond LVEF was modest and should be interpreted within the limits of a non-KDIGO creatinine-based proxy endpoint.
METHODS: This retrospective linked echocardiographic cohort study analyzed 1,022 complete biplane studies from 784 patients in the credentialed PhysioNet MIMIC-IV-ECHO-Ext-LVVOLUMES-A4C-ROI resource linked to MIMIC-IV v3.1 clinical tables. The primary endpoint was an acute kidney injury (AKI) proxy defined as maximum serum creatinine ≥ 2.0 mg/dL within a ± 24-hour peri-echocardiographic window. Hierarchical logistic regression with patient-level cluster-robust standard errors included age, sex, first-day SOFA score, and vasopressor exposure; 5 chained-equation imputations addressed missing SOFA. Temporal analysis compared echocardiography time with the first creatinine value meeting the endpoint threshold.
RESULTS: AKI proxy was present in 80 of 1,022 studies (7.8%). Among these 80 studies, 73 (91.3%) reached the creatinine threshold before echocardiography and 7 (8.8%) after echocardiography. For AKI proxy, LVESV showed modestly higher discrimination than LVEF (AUC 0.572 vs. 0.548; ΔAUC 0.024; p = 0.253). In the fully adjusted hierarchical model, LVESV remained associated with AKI proxy (OR 1.40 per SD increase, 95% CI 1.10-1.78; p = 0.006), whereas LVEF did not (OR 0.83 per SD decrease, 95% CI 0.62-1.10; p = 0.188). Model 3 yielded the highest C-statistic (0.727) and the lowest AIC (517.0), but BIC was not improved and reclassification gains were modest.
CONCLUSIONS: LVESV was associated with peri-echocardiographic AKI proxy after severity adjustment, but the temporal analysis indicates that the signal predominantly reflected concurrent renal illness rather than prospective prediction. Any incremental value beyond LVEF was modest and should be interpreted within the limits of a non-KDIGO creatinine-based proxy endpoint.