| 摘要 |
Apparatus for determining the shape of an arterial pressure pulse in a person comprises a transmitter (<B>4 in fig. 1</B>) for transmitting red or infrared light through a part of the person's body, such as a finger or ear lobe, and a sensor (<B>8 in fig.</B> 1) for measuring the amount of light passing through the part of the person's body, the measurement providing a digital volume pulse waveform (<B>fig. 2</B>). A mathematical transfer function transforms the digital volume pulse waveform into a pressure pulse waveform. |
