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System and sensor for early detection of shock or perfusion failure and technique for using the same

  • US 8,750,978 B2
  • Filed: 12/18/2008
  • Issued: 06/10/2014
  • Est. Priority Date: 12/31/2007
  • Status: Expired due to Fees
First Claim
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1. A system, comprising:

  • a first electrode configured to apply a current to an oral or nasal mucosa of a patient;

    a second electrode configured to detect the applied current from the mucosa and output an impedance measurement related to an electrical impedance of the oral or nasal mucosa; and

    a monitor operatively coupled to the first electrode and the second electrode and configured to;

    receive a first impedance measurement prior to a surgical procedure and perform an operation on the first impedance measurement to determine a baseline impedance value;

    receive a second impedance measurement after or during the surgical procedure and perform the operation on the second impedance measurement to determine an impedance value;

    compare the impedance value to the baseline impedance value to determine when the impedance value varies from the baseline impedance value; and

    determine that a patient has a clinical condition comprising gut hypoperfusion, gut ischemia, shock, and/or organ failure when the impedance value varies from the baseline impedance value.

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