| 摘要 |
A cardiac monitoring device comprises means (9) for transmitting a signal and receiving at least one echo of said signal reflected from at least one cardiac segment (6, 7, 16) a position of which, at least when reflecting said signal, is related to the cardiac performance of a heart, and, means provided to register a delay (t1, t2) between the transmission of the signal and the receipt of said echo, and to derive from the delay (t1, t2) the position of said cardiac segment (6, 7, 16). Furthermore, the device comprises means (11) provided to derive from said position the cardiac performance. The inventive device may also form part of a rate response pacemaker system.
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