Hemodynamic basis of mitral E transmission in the left ventricular cavity and its relation to the left ventricular relaxation process.
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.
Pai
R G
RG
Section of Cardiology, Loma Linda VA Medical Center and Loma Linda University, California, USA.
Stoletniy
L
L
D001783:Blood Flow Velocity / Q000502:physiology; D001794:Blood Pressure / Q000502:physiology; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000503:physiopathology; D018619:Echocardiography, Doppler, Pulsed; D005260:Female; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000000981:diagnostic imaging* / Q000503:physiopathology; D009200:Myocardial Contraction / Q000502:physiology*; D017202:Myocardial Ischemia / Q000000981:diagnostic imaging* / Q000503:physiopathology; D012016:Reference Values; D016277:Ventricular Function, Left / Q000502:physiology*