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- W2393695807 abstract "Objective To assess synchrony in heart failure patients with different QRS duration by tissue doppler imaging(TDI).Methods Fourty-eight heart failure patients(25 with QRS during ≤120 ms,23 with QRS during 120 ms) and 25 subjects with normal heart function were studied.Left and right ventricular pre-ejection intervals were measured and their differences(IVD) were calculated.Time to peak sustained systolic velocities(Ts) in 12 segments by TDI were measured in all subjects.Parameters including 12 segmental maximal Ts difference(Ts-diff),12 segments standard deviation(Ts-SD) and the difference between basal septal Ts and lateral wall Ts(S-LW-diff) were calculated and compared.Results The results of IVD,Ts-diff,Ts-SD and S-LW-diff in heart failure patients with QRS duration either ≤120 ms or 120 ms were all prolonged compared with those of normal subjects(IVD:31.00±15.21 ms,61.33±27.67 ms vs 15.89±7.56 ms;Ts-diff:70.29±35.25 ms,98.07±46.04 ms vs 47.86±16.78 ms;Ts-SD:24.64±12.84 ms,33.61±15.58 ms vs 15.24±5.65 ms;S-LW-diff:54.28±20.81 ms,76.32±42.38 ms vs 32.62±20.34 ms;all P values 0.05).Dyssyrchrony was observed in 44.00% of the heart failure patients with QRS duration ≤120 ms but in 95.65% of the patients with QRS duration 120 ms(P0.05).Conclusion Dyssynchrony also existed in heart failure patients with normal QRS duration,and patients with wide QRS had a high prevalence of dyssynchrony." @default.
- W2393695807 created "2016-06-24" @default.
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- W2393695807 date "2008-01-01" @default.
- W2393695807 modified "2023-09-25" @default.
- W2393695807 title "Assessment of ventricular synchrony in heart failure patients with different QRS duration using Tissue Doppler Imaging" @default.
- W2393695807 hasPublicationYear "2008" @default.
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