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• W2068715077 abstract "BACKGROUND Reportedly, mitral annular velocities derived by tissue Doppler imaging (TDI)-during isovolumic contraction (IVV) can predict pulmonary capillary wedge pressure (PCWP) in heart failure patients with depressed ejection fraction (EF). We investigated the use of color TDI-derived left atrial (LA) and left ventricular (LV) longitudinal strain rate (SR) during isovolumic contraction (IC) to predict the invasively measured PCWP. METHODS AND RESULTS Forty patients referred with symptoms of heart failure were prospectively studied [age: 56±8 years, 12 (30%) females, and mean LVEF: 51±14%]. PCWP was measured invasively immediately after echocardiography. Mitral annular IVV was measured for all patients and SR during the IC and ejection were measured for the LV (LVSR-IC, LVSR-Ej) as well as the LA (LASR-IC, and LASR-Ej). Atrioventricular SR during IC and Ej (AVSR-IC, AVSR-Ej) was calculated as the sum of the LV and LA values. Patients were classified and compared based on their EF into 19 (49%) with EF≥55%, and 21 (51%) with EF<55%. No significant differences were noted for age, sex, risk factors, and medications between both patients with EF≥55% and EF<55%. Compared to EF≥55%, patients with EF<55% had lower IVV (4.63±1.2 vs. 7.01±1.9 cm/s, P<0.001), LVSR-Ej (1±0.3 vs. 1.2±0.2, P=0.03), LASR-IC (1.3±0.6 vs. 1.9±1, P=0.03), LASR-Ej (1.5±0.5 vs. 2.6±1.3 s-1, P=0.001), AVSR-IC (2±0.8 vs. 2.7±1.06 s-1, P=0.023), and AVSR-Ej (2.5±0.6 vs. 3.9±1.1 s-1, <0.001). LVSR-IC, LVSR-Ej, LASR-IC, AVSR-IC, and IVV correlated with PCWP in only in EF<55%, with the strongest correlation noted for AVSR-IC (r=-0.72, <0.001). Other correlates with PCWP in EF<55% were E/e' and left atrial volume (r=0.47, 0.7, P=0.04, 0.001; respectively). Multivariate regression revealed that in patients with EF<55% AVSR-IC was the only independent predictor of PCWP. Finally, IVV correlated with LVSR-IC and LASR-IC and this correlation became strongest with AVSR-IC (r=0.77, 0.001). CONCLUSION The combined LV and LA longitudinal SR during IC as represented by AVSR-IC showed a strong correlation with PCWP in patients with depressed EF. The correlation between mitral annular IVV and PCWP in those patients can be a product of this combination and may a function of atrioventricular mechanical coupling." @default.
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• W2068715077 date "2014-04-01" @default.
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• W2068715077 title "COMBINED ATRIOVENTRICULAR LONGITUDINAL STRAIN RATE DURING ISOVOLUMIC CONTRACTION PREDICTS PULMONARY CAPILLARY WEDGE PRESSURE IN PATIENTS WITH SYSTOLIC DYSFUNCTION" @default.
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• W2068715077 doi "https://doi.org/10.1016/s0735-1097(14)61187-6" @default.
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