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Hemodynamic basis of mitral E transmission in the left ventricular cavity and its relation to the left ventricular
1Section of Cardiology, Loma Linda VA Medical Center and Loma Linda University, California, USA.
The American Journal of Cardiology
|June 19, 1998
Abstract:
Mitral E-wave transit time to the left ventricular outflow tract was measured as an E-Er interval in 30 subjects undergoing cardiac catheterization. The E-Er interval (range 30 to 190 ms) correlated with left ventricular peak negative dP/dt (r = -0.62, p = 0.0003) and tau (r = 0.74, p <0.0001) but not with left ventricular minimum, pre-A-wave, or end-diastolic pressures. We conclude that the E-Er interval is an easily obtainable Doppler measurement that reflects the left ventricular relaxation process.