| 摘要 |
A process and a device for improving the determination of the pulse transit time for non-invasive blood pressure measurement. A value, correlating with the blood density, is determined and its influence on the pulse transit time is compensated. In this manner more precise blood pressure data can be obtained. In a further development, a value, correlating with the blood density, is determined by a measuring device for the change in relative blood volume or hematocrit. The device can also be used as part of a hemotherapeutic arrangement such as a hemodialysis device and/or hemofiltration device, in which a blood pressure monitoring as continuous and precise as possible is desired, among other things, because of a blood volume change and thereby a blood density change inherent in the therapy.
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