Method and apparatus for P-synchronously stimulating the heart o

Details Method and apparatus for P-synchronously stimulating the heart o Method and apparatus for P-synchronously stimulating the heart o

1987-10-07

1990-03-06

Cohen, Lee S.

Surgery

Truss

Pad

128419P, A61N 136

Patent

active

049056964

ABSTRACT:
An impedance measurement, used for controlling the pulse generation rate of the pacer, is obtained by placing an electrode in the ventricular portion, rather than the atrial portion, of the heart. The characteristic p-wave in the electrocardiogram is detected as a rapid inflection or notch in the impedance signal, with a stimulation pulse being generated with a time delay following detection of such a notch.

REFERENCES:
patent: 4291699 (1981-09-01), Geddes et al.
patent: 4535774 (1985-08-01), Olson
patent: 4567883 (1986-02-01), Langer et al.
patent: 4733667 (1988-03-01), Olive et al.

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