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Detection of pleural effusion using transthoracic impedance

  • US 7,979,115 B2
  • Filed: 01/10/2008
  • Issued: 07/12/2011
  • Est. Priority Date: 05/18/2005
  • Status: Expired due to Fees
First Claim
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1. A system for the detection of fluid in a subject, comprising:

  • an implantable thoracic impedance measurement circuit, configured to sense a thoracic impedance signal from the subject;

    a processor, coupled with the thoracic impedance measurement circuit to receive the thoracic impedance signal, the processor configured to detect a pleural effusion indication including a differential indication of pleural effusion relative to pulmonary edema using the thoracic impedance signal; and

    an external user interface, coupled to the processor to receive information about the pleural effusion indication, the external user interface configured to provide a user-detectable lung fluid indication using information about the pleural effusion indication.

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