Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2008-07-15
2008-07-15
Layno, Carl H. (Department: 3766)
Surgery
Diagnostic testing
Cardiovascular
C600S515000, C600S509000, C607S025000
Reexamination Certificate
active
11202553
ABSTRACT:
Morphological features within electrical cardiac signals are tracked and changes in features are monitored to detect renal failure. The morphological feature may be an interval between corresponding polarization events such as the interval between QRS-complexes and peaks of corresponding T-waves (QTmax interval); the interval between QRS-complexes and ends of corresponding T-waves (QTend interval); or the interval between P-waves and corresponding QRS-complexes (PR interval). The feature may also be the elevation of a cardiac signal segment between corresponding polarization events, such as QRS-complexes and corresponding T-waves (ST segment); a duration of a polarization event, such as a QRS-complex (QRS width); or an amplitude of a polarization event, such as a T-wave (T-wave amplitude). The change in the feature may comprise a decrease in QTmax intervals, a decrease in QTend intervals, a deviation in ST segment elevation, an increase in QRS width, an increase in PR interval or a deviation in T-wave amplitude.
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Bornzin Gene A.
Gill Jong
Layno Carl H.
Pacesetter Inc.
Patel Natasha N
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