V_{D}/A_{D} | 2.13 ± 0.37 |

EF_{A}, % | 30 ± 10 |

C, ml | 353 ± 85 |

A_{m}, ml | 81 ± 24 |

A_{m}/C | 0.23 ± 0.02 |

Values are means ± SD;

*n*= 11 subjects. V_{D}, (left + right ventricular volume at diastasis; A_{D}, (left + right) atrial volume at diastasis; EF_{A}, atrial ejection fraction; C, (constant) total volume of the left and right ventricles plus the left and right atrial; A_{m}, (constant) minimal (left + right) atrial volume. Chamber volumes at ventricular end diastole were used to calculate C.