Noninvasive measurement of the time constant of left ventricular relaxation using the continuous-wave Doppler velocity profile of mitral regurgitation. | Zendy

C Chen | Zendy; Ledmar Jovanny Vargas Rodríguez | Zendy; Robert A. Levine | Zendy; Arthur E. Weyman | Zendy; James D. Thomas | Zendy

Open Access

Noninvasive measurement of the time constant of left ventricular relaxation using the continuous-wave Doppler velocity profile of mitral regurgitation.

Author(s) -

C Chen,

Ledmar Jovanny Vargas Rodríguez,

Robert A. Levine,

Arthur E. Weyman,

James D. Thomas

Publication year - 1992

Publication title -

circulation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.795

H-Index - 607

eISSN - 1524-4539

pISSN - 0009-7322

DOI - 10.1161/01.cir.86.1.272

Subject(s) - medicine , cardiology , doppler effect , pressure gradient , doppler echocardiography , mitral regurgitation , diastole , blood pressure , physics , mechanics , astronomy

The time constant of isovolumic relaxation (tau) is an important parameter of ventricular diastolic function, but the need for invasive measurement with high-fidelity catheters has limited its use in general clinical cardiology. The Doppler mitral regurgitant velocity spectrum can be used to estimate left ventricular (LV) pressure throughout systole and may provide a new noninvasive method for estimating tau.

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