System for cardiac pathology detection and characterization
First Claim
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1. A system for heart performance characterization and abnormality detection, comprising:
- an interface for receiving an electrical signal comprising a pressure indicative waveform indicating a heart blood pressure of a patient over a heart beat cycle;
a timing detector for determining a plurality of different time periods in at least one heart cycle of the pressure indicative waveform, said plurality of different time periods comprising a time interval T1 substantially from first to second successive peaks in the pressure indicative waveform, and a further time interval T4 from a pressure peak to a successive end of Systolic point; and
a patient monitor for monitoring said further time interval T4 and in response to detection of a variation in said further time interval exceeding a predetermined threshold or range, generating an alert message associated with said variation.
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Abstract
A system for heart performance characterization and abnormality detection includes an interface for receiving an electrical signal comprising a pressure indicative waveform indicating a heart blood pressure of a patient over a heart beat cycle. A timing detector determines multiple different time periods in at least one heart cycle from the pressure indicative waveform. A patient monitor monitors the multiple different time periods and in response to detection of a variation in at least one of the multiple different time periods exceeding a predetermined threshold or range, generates an alert message associated with the variation.
44 Citations
14 Claims
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1. A system for heart performance characterization and abnormality detection, comprising:
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an interface for receiving an electrical signal comprising a pressure indicative waveform indicating a heart blood pressure of a patient over a heart beat cycle; a timing detector for determining a plurality of different time periods in at least one heart cycle of the pressure indicative waveform, said plurality of different time periods comprising a time interval T1 substantially from first to second successive peaks in the pressure indicative waveform, and a further time interval T4 from a pressure peak to a successive end of Systolic point; and a patient monitor for monitoring said further time interval T4 and in response to detection of a variation in said further time interval exceeding a predetermined threshold or range, generating an alert message associated with said variation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13)
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12. A system for heart performance characterization and abnormality detection, comprising:
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an interface for receiving an electrical signal comprising a pressure indicative waveform indicating a heart blood pressure of a patient over a heart beat cycle; a timing detector for determining a plurality of different time periods in at least one heart cycle of the pressure indicative waveform, said plurality of different time periods comprising a time interval T1 substantially from first to second successive peaks in the pressure indicative waveform, and a further time period of at least one of, (a) a time interval T4 substantially from a pressure peak to a successive end of Systolic point and (b) a time interval T5 substantially from a pressure minimum point to a successive end of Diastolic point; a patient monitor for monitoring said further time period and in response to detection of a variation in said further time period exceeding a predetermined threshold or range, generating an alert message associated with said variation; and
includinga frequency processor for monitoring a plurality of different frequency characteristics comprising a frequency of a frequency component of a pressure indicative waveform occurring in a particular time interval.
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14. A method for heart performance characterization and abnormality detection, comprising the activities of:
employing an interface, a timing detector and a patient monitor for, receiving an electrical signal comprising a pressure indicative waveform indicating a heart blood pressure of a patient over a heart beat cycle; determining a plurality of different time periods in at least one heart cycle of the pressure indicative waveform, said plurality of different time periods comprising a time interval T1 substantially from first to second successive peaks in the pressure indicative waveform and a time interval T4 from a pressure peak to a successive end of Systolic point; and monitoring said plurality of different time periods and in response to detection of a variation in time interval T4 exceeding a predetermined threshold or range, generating an alert message associated with said variation.
Specification