Parameter/Index | MAO^{+} Group (n = 35) | MAO^{−} Group (n = 20) | Intergroup Significance |
---|---|---|---|

EF, % | 71.2 (7.5) | 65.4 (9.1) | P < 0.05 |

E, cm/s | 70.2 (15.0) | 66.0 (15.5) | P = 0.34 |

AT, ms | 87 (13) | 92 (13) | P = 0.13 |

DT, ms | 184 (40) | 205 (53) | P = 0.11 |

VTI_{E}, mm | 95 (20) | 100 (26) | P = 0.47 |

A, cm/s^{*} | 61.5 (13.6) | 74.1 (21.2) | P < 0.05 |

VTI_{A}, mm^{*} | 47 (10) | 51 (17) | P = 0.37 |

E/A^{*} | 1.19 (0.31) | 0.97 (0.31) | P < 0.05 |

IVRT, ms | 63 (16) | 82 (17) | P < 0.001 |

τ, ms^{†} | 51 (13) | 67 (27) | P < 0.01 |

LVESV, ml^{†} | 48 (24) | 61 (29) | P = 0.08 |

LVEDP, mmHg | 16.8 (4.5) | 17.9 (5.4) | P = 0.44 |

LVP_{min}, mmHg^{†} | 6.3 (3.5) | 7.0 (4.3) | P = 0.54 |

LVP_{diast}, mmHg^{†} | 11.0 (4.5) | 10.5 (4.1) | P = 0.69 |

LVP_{diast} − LVP_{min}, mmHg^{†} | 4.7 (1.6) | 3.6 (1.2) | P < 0.05 |

dP/dt_{min}, mmHg/s^{†} | −1,731 (263) | −1,636 (414) | P = 0.30 |

c, g/s | 18.4 (5.9) | 27.3 (10.4) | P < 0.001 |

k, g/s^{2} | 204 (38) | 225 (69) | P = 0.15 |

x_{o}, cm | 10.5 (2.9) | 11.7 (3.4) | P = 0.17 |

kx_{o}, dyn | 2,100 (660) | 2,590 (1,000) | P < 0.05 |

1/2kx_{o}^{2}, erg | 11,700 (7,100) | 16,100 (10,300) | P = 0.07 |

β, s^{−2} | −445 (254) | −54 (542) | P < 0.001 |

Values are means (SD). EF, ejection fraction; E and A, peak amplitude of E and A wave, respectively; AT and DT, acceleration and deceleration time of E wave, respectively; VTI

_{E}and VTI_{A}, velocity-time integral of E and A wave, respectively; IVRT, isovolumic relaxation time; τ, time constant of isovolumic relaxation; LVESV, left ventricular (LV) end-systolic volume; LVEDP, LV end-diastolic pressure; LVP_{min}, minimum LV pressure; LVP_{diast}, diastolic LV pressure; dP/d*t*_{min}, peak negative rate of pressure decline during isovolumic relaxation;*c*, damping constant;*k*, spring constant;*x*_{o}, initial displacement of spring before release; β, effect of stiffness vs. relaxation.↵* E and A waves were merged in 3 of the subjects without annular oscillations, precluding determination of A, E/A, and VTI

_{A}for these subjects.↵† Technical difficulties during data acquisition precluded determination of LVESV, LVP

_{min}, LVP_{diast}, and LVP_{diast}− LVP_{min}in 1 and τ and dP/d*t*_{min}in 2 of the subjects without annular oscillations, respectively. Bold type indicates significance.