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- W3150218414 abstract "BACKGROUNDAbnormal left ventricular (LV) filling has been observed in patients with heart failure and is characterized by marked heterogeneity of mitral inflow velocity. In the present study, the contribution of the left atrium to LV filling was examined in eight dogs during the course of evolving heart failure.METHODS AND RESULTSHeart failure was produced by multiple sequential intracoronary embolizations with microspheres. Pulsed Doppler echocardiography was used to measure mitral inflow velocity at baseline, before embolization, and at 3, 8, 15, 23, and 33 weeks after initiation of microembolization. The early rapid LV filling (Ei) and late left atrial filling (Ai) components were quantitated based on the time-velocity integral of the early and late mitral inflow velocity waveforms, respectively. Ei decreased progressively from 7.6 +/- 1.5 cm at baseline to 4.0 +/- 0.4 cm at 33 weeks (p less than 0.01). In contrast, Ai initially increased from 1.8 +/- 0.9 cm at baseline to 2.7 +/- 0.4 cm at 3 weeks (p ..." @default.
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- W3150218414 date "1992-01-01" @default.
- W3150218414 modified "2023-09-24" @default.
- W3150218414 title "Left atrial contribution to ventricular filling during the course of evolving heart failure." @default.
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