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Apparatus and method for determining cardiac output in a living subject

  • US 6,602,201 B1
  • Filed: 07/10/2001
  • Issued: 08/05/2003
  • Est. Priority Date: 07/10/2000
  • Status: Expired due to Term
First Claim
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1. A system for determining the cardiac output of a living subject, comprising:

  • a plurality of electrode assemblies, each electrode assembly having a plurality of terminals, at least two of said plurality of terminals being spaced from one another by a predetermined distance;

    a current source capable of generating a substantially constant current;

    a plurality of electrical leads connecting said current source with individual ones of said terminals of said electrode assemblies, a first circuit adapted to measure the difference in voltage at said terminals resulting from the flow of said current through said subject and said terminals under varying cardiac conditions of said subject;

    a second circuit adapted to measure ECG potentials from at least one of said electrode assemblies; and

    at least one processing circuit adapted to process said voltage and ECG potentials and develop an estimate of cardiac output therefrom.

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