| 摘要 |
A heart stimulator for electrical stimulation of the heart comprises means (28, 30, 32, 34, 36, 38, 40, 42, 44, 48, C1, C2) for determining cardiac output and a controlling means for controlling the stimulation in response to the determined cardiac output. The cardiac output determining means comprise a means (48) for measuring the pressure inside the right ventricle and producing a corresponding pressure signal, and a means (32) for producing from said pressure signal a control signal related to the cardiac output and supplying said control signal to said control means for controlling the delivered stimulation according to the control signal. The control signal producing means comprises an integrating means (32) adapted to integrate the pressure signal during the systolic phase of the heart.
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