Cardiac arrhythmia detection and recording

Details Cardiac arrhythmia detection and recording Cardiac arrhythmia detection and recording

1979-10-22

1984-07-03

Kamm, William E.

Surgery

Truss

Pad

128711, A61B 504

Patent

active

044573154

ABSTRACT:
Cardiac arrhythmias are detected by measuring the duration of the first derivative of the QRS component signal of a cardiac rhythm and comparing such duration to a running average duration, and/or by measuring the duration of the R-R interval and comparing such interval to a running average interval. A cassette recorder in a portable battery-operated monitor for ambulatory patients is activated in response to an arrhythmia detected by either one of the above techniques. The cardiac rhythm signal is fed to the recorder through a delay network such that the recorded signal brackets the detected arrhythmia. A manual record switch is also provided for separate wearer actuation to record what he considers to be unusual heart activity.

REFERENCES:
patent: 3524442 (1970-08-01), Horth
patent: 3759248 (1973-09-01), Valiquette
patent: 3799148 (1974-03-01), Rowen
patent: 3824990 (1974-07-01), Baule
patent: 3874370 (1975-04-01), Harris et al.
patent: 3934267 (1976-01-01), Kosaka et al.
patent: 4183354 (1980-01-01), Sibley et al.

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