Electrotherapy method for external defibrillators

  • US 5,735,879 A
  • Filed: 02/20/1997
  • Issued: 04/07/1998
  • Est. Priority Date: 08/06/1993
  • Status: Expired due to Term
First Claim
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1. A method for applying electrotherapy to a patient from a source external to the patient, the method comprising the following steps:

  • placing two electrodes on a patient, the electrodes being electrically connected in a first polarity to an energy source external to the patient;

    charging the energy source to an energy level corresponding to a first start amplitude;

    discharging the energy source across the electrodesmeasuring a patient impedance during the discharge step;

    adjusting a discharge parameter based on the measured patient impedance;

    reversing the polarity of connection of the energy source to the electrodes to a second polarity; and

    discharging the energy source across the electrodes.

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