Method for detecting ventricular fibrillation and apparatus for

Details Method for detecting ventricular fibrillation and apparatus for Method for detecting ventricular fibrillation and apparatus for

1993-08-04

1995-01-31

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

128734, 128705, A61N 139

Patent

active

053855760

ABSTRACT:
In a method and apparatus for detecting ventricular fibrillation, a measured impedance signal, dependent on the blood volume in the heart, is evaluated, and ventricular fibrillation is assumed to be present if the level of the measured impedance signal falls below a predetermined threshold. This is based on the perception that as the heart fills with blood, given the presence of ventricular fibrillation, the level of the measured impedance signal will decrease. The apparatus also includes circuitry for treating the detected ventricular fibrillation.

REFERENCES:
patent: 4674518 (1987-06-01), Salo
patent: 4697591 (1987-10-01), Lekholm et al.
patent: 5058583 (1991-10-01), Geddes et al.

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