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US 7,460,902 B2Granted
Monitoring of atrial activation
AssigneeGeneral Electric Company
InventorMikko Kaski
Life of this patent
Estimating the term…
Abstract
A method and system for monitoring atrial activation in a patient is provided. In the method, a moment of occurrence and a wave form are predicted for a subsequent P wave based on a sequence of P waves already received in ECG signal data obtained from the patient. The process then checks whether the subsequent P wave really occurs in the ECG signal data within a first time window around the predicted moment of occurrence. If this is the case, the process further monitors whether the P wave is followed by a QRS complex in the ECG signal data.
Claims24
A method for monitoring atrial activation in an individual patient, the method comprising the steps of:
- receiving ECG signal data obtained from a patient;
- based on a first sequence of P waves received in the EGG signal data, predicting a moment of occurrence for a subsequent P wave in the ECG signal data;
- estimating a reference wave form for the subsequent P wave based on a second sequence of P waves received in the ECG signal data;
- checking whether said subsequent P wave occurs in the ECG signal data within a first time window around the predicted moment of occurrence;
- monitoring whether a subsequent QRS complex occurs in the ECG signal data within a second time window ending after the first time window;
- and
- indicating the detection of an AV block if the subsequent QRS complex fails to occur in the ECG data within the second time window,
- wherein the monitoring step is performed upon detecting in the checking step that said subsequent P wave occurred in the ECG signal data within the first time window.
5 more elements
A method for monitoring atrial activation in an individual patient, the method comprising the steps of:
- receiving ECG signal data obtained from a patient;
- based on a first sequence of P waves received in the ECG signal data, predicting a moment of occurrence for a subsequent P wave in the ECG signal data;
- estimating a reference wave form for the subsequent P wave based on a second sequence of P waves received in the ECG signal data;
- checking whether said subsequent P wave occurs in the ECG signal data within a first time window around the predicted moment of occurrence;
- and
- monitoring whether a subsequent QRS complex occurs in the ECG signal data after said subsequent P wave, wherein the monitoring step further includes the sub-steps of:
- setting a timer to measure a second time window ending after the first time window, the subsequent QRS complex being monitored within the second time window;
- stopping the timer when the subsequent QRS complex occurs in the ECG signal data within the second time window;
- measuring a time interval between the setting and stopping sub-steps;
- and
- based on the time interval, deciding whether an AV block occurred in the ECG signal data,
- wherein the monitoring step is performed upon detecting in the checking step that said subsequent P wave occurred in the ECG signal data within the first time window.
9 more elements
A method for monitoring atrial activation in an individual patient, the method comprising the steps of:
- receiving ECG signal data obtained from a patient;
- based on a first sequence of P waves received in the ECG signal data, predicting a moment of occurrence for a subsequent P wave in the ECG signal data;
- estimating a reference wave form for the subsequent P wave based on a second sequence of P waves received in the ECG signal data;
- checking whether said subsequent P wave occurs in the ECG signal data within a first time window around the predicted moment of occurrence;
- and
- monitoring whether a subsequent QRS complex occurs in the ECG signal data after said subsequent P wave, wherein the monitoring step further includes the sub-steps of:
- predicting a moment of occurrence for the subsequent QRS complex;
- estimating a reference wave form for the subsequent QRS complex;
- and
- checking whether the subsequent QRS complex occurs in the ECG signal data substantially at the moment of occurrence predicted in the predicting sub-step.
7 more elements
A system for monitoring atrial activation in an individual patient, the system comprising:
- reception means for receiving ECG signal data obtained from a patient;
- first calculation means for predicting a moment of occurrence for a subsequent P wave in the ECG signal data, the first calculation means being configured to predict the moment of occurrence based on a first sequence of P waves received in the ECG signal data;
- second calculation means for estimating a reference wave form for the subsequent P wave based on a second sequence of P waves received in the ECG signal data;
- first verification means for checking whether said subsequent P wave occurs in the ECG signal data within a first time window around the moment of occurrence;
- and
- monitoring means for monitoring whether a subsequent QRS complex occurs in the ECG signal data within a second time window ending after the first time window and after said subsequent P wave,
- wherein the monitoring means indicates the detection of an AV block if the subsequent QRS complex fails to occur in the ECG data within the second time window.
4 more elements
A system for monitoring atrial activation in an individual patient, the system comprising:
- a first controller for receiving ECG signal data obtained from a patient;
- a first calculator configured to predict a moment of occurrence for a subsequent P wave in the ECG signal data, the first calculator being configured to predict the moment of occurrence based on a first sequence of P waves received in the ECG signal data;
- a second calculator configured to estimate a reference wave form for the subsequent P wave based on a second sequence of P waves received in the ECG signal data;
- a second controller configured to check whether said subsequent P wave occurs in the ECG signal data within a first time window around the moment of occurrence;
- and
- a third controller configured to monitor whether a subsequent QRS complex occurs in the ECG signal data within a second time window ending after the first time window and after said subsequent P wave,
- wherein the system indicates the detection of an AV block if the subsequent QRS complex fails to occur in the ECG data within the second time window.
4 more elements
A computer readable medium for monitoring atrial activation in an individual patient, the computer program product comprising:
- a first program code portion configured to predict, based on a first sequence of P waves contained in ECG signal data obtained from a patient, a moment of occurrence for a subsequent P wave in the ECG signal data;
- a second program code portion configured to estimate a reference wave form for the subsequent P wave based on a second sequence of P waves received in the ECG signal data;
- a third program code portion configured to check whether said subsequent P wave occurs in the ECG signal data within a first time window around the moment of occurrence;
- and
- a fourth program code portion configured to monitor whether a subsequent QRS complex occurs in the ECG signal data within a second time window ending after the first time window and after said subsequent P wave,
- wherein the computer program product indicates the detection of an AV block if the subsequent QRS complex fails to occur in the ECG data within the second time window.
3 more elements
Dependencies are inferred from the claim text.