Hemodynamic basis of mitral E transmission in the left ventricular cavity and its relation to the left ventricular relaxation process |
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Authors: | RG Pai L Stoletniy |
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Affiliation: | Section of Cardiology, Loma Linda VA Medical Center and Loma Linda University, California, USA. |
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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. |
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