Method and device for extracorporeal blood treatment with a means for continuous monitoring of the extracorporeal blood treatment
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United States of America Patent
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May 18, 2004
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N/A
app pub date -
Oct 21, 1998
filing date -
Oct 21, 1997
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Abstract
A method and a device for continuous, noninvasive monitoring of an extracorporeal blood treatment, a patient's blood pressure or a quantity that correlates with the blood pressure is measured and compared with a predetermined limit value. If the measured blood pressure or its relative change drops below the predetermined limit value, an activation or deactivation signal is generated to initiate an intervention in the treatment sequence. The blood treatment machine therefore has a control unit. The continuous, noninvasive measurement of blood pressure is based on a determination of the propagation rate or transit time of the pulse waves produced by the patient's cardiac contractions and their propagation through the arterial system. To determine the pulse wave velocity or transit time, the blood treatment machine has an electrocardiograph and a device for detecting the pulse waves at a location on the patient remote from the heart.
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