System and methods for graphic display of ST-segment deviation
View Patent ↗Systems and methods are provided for monitoring a patient and graphically representing ST-segment deviations.
1. A method for monitoring a patient and graphically representing ST-segment deviations derived from electrocardiogram (ECG) signals from a plurality of leads, each ECG signal including a sequence of ST-segments between a QRS complex and a T wave, the method comprising:
obtaining a first set of data corresponding to a baseline ST-segment deviation from an isoelectric value for each of the plurality of leads at a first point in time;
obtaining a second set of data corresponding to a current ST-segment deviation, wherein the current ST-segment deviation comprises an ST-segment deviation from an isoelectric value for each of the plurality of leads at a second point in time;
displaying a graph comprising:
a first axis representing ST-segment deviation values; and
a second axis representing the plurality of leads, wherein each of the plurality of leads is associated with a respective location along the second axis;
displaying a first set of bar graphs representing the baseline ST-segment deviations, wherein each first bar graph is displayed with respect to one of the locations corresponding to a respective lead and is aligned relative to the first axis based on the baseline ST-segment deviation for the respective lead; and
displaying a second set of bar graphs representing the current ST-segment deviations, wherein each second bar graph is displayed with respect to one of the locations corresponding to a respective lead and is aligned relative to the first axis based on the current ST-segment deviation for the respective lead;
displaying a graphical indication in addition to the bar graphs to indicate whether the current ST-segment deviation for a particular lead is increasing or decreasing with respect to the baseline ST-segment deviation for that lead.
2. The method of claim 1 , wherein the graphical indication comprises one of an arrow or arrow head.
3. The method of claim 1 , wherein the graphical indication comprises a directed line segment.
4. The method of claim 1 , wherein the graphical indication is displayed on one or both of the first and second bar graph for a lead.
5. The method of claim 1 , wherein the graphical indication is displayed adjacent to one or both of the first and second bar graph for a lead.
6. The method of claim 1 , further comprising:
displaying one or more threshold lines substantially parallel to the second linear axis, each threshold line representing a threshold ST-segment deviation value.
7. A patient monitoring system for graphically representing ST-segment deviation derived from electrocardiogram (ECG) signals from a plurality of leads, each ECG signal including a sequence of ST-segments between a QRS complex and a T wave, the system comprising:
a processor configured to obtain a first set of data corresponding to a baseline ST-segment deviation from an isoelectric value for each of the plurality of leads at a first point in time and a second set of data corresponding to an ST-segment deviation from an isoelectric value for each of the plurality of leads at a second point in time (“current ST-segment deviation”), wherein the processor is further configured to process the ECG signals to determine, for each of the plurality of leads, baseline ST-segment deviations from an isoelectric value and current ST-segment deviations from the isoelectric value;
a display module configured to display a graph in a user interface, the graph comprising:
a first axis representing ST-segment deviation values; and
a second axis representing the plurality of leads, wherein each of the plurality of leads is associated with a respective location along the second axis;
wherein the display module is further configured to:
display a first set of graphic indicia representing the baseline ST-segment deviations, each graphic indicia in the first set being displayed with respect to one of the locations corresponding to a respective lead and being aligned relative to the first axis based on the baseline ST-segment deviation for the respective lead; and
displays a second set of graphic indicia representing the current ST-segment deviations, each graphic indicia in the second set being displayed with respect to one of the locations corresponding to a respective lead and being aligned relative to the first axis based on the current ST-segment deviation for the respective lead; and
displays a third set of graphical indicia to indicate whether the current ST-segment deviation for a particular lead is increasing or decreasing with respect to the baseline ST-segment deviation for that lead.
8. The patient monitoring system of claim 7 , wherein the third set of graphical indicia comprises one of an arrow or arrow head.
9. The patient monitoring system of claim 7 , wherein the third set of graphical indicia comprises a directed line segment.
10. The patient monitoring system of claim 7 , wherein the third set of graphical indicia is displayed on one or both of the first set of graphical indicia and the second set of graphical indicia for a lead.
11. The patient monitoring system of claim 7 , wherein the third set of graphical indicia is displayed adjacent to on one or both of the first set of graphical indicia and the second set of graphical indicia for a lead.
12. The patient monitoring system of claim 7 , wherein the display module is further configured to:
display one or more threshold lines substantially parallel to the second linear axis, each threshold line representing a threshold ST-segment deviation value.
13. A non-transitory computer-readable medium comprising program code for causing a processor to perform a method for monitoring a patient and graphically representing ST-segment deviations derived from electrocardiogram (ECG) signals from a plurality of leads, each ECG signal including a sequence of ST-segments between a QRS complex and a T wave, the method comprising:
obtaining a first set of data corresponding to a baseline ST-segment deviation from an isoelectric value for each of the plurality of leads at a first point in time;
obtaining a second set of data corresponding to an ST-segment deviation from an isoelectric value for each of the plurality of leads at a second point in time (“current ST-segment deviation”);
displaying a graph comprising:
a first axis representing ST-segment deviation values; and
a second axis representing the plurality of leads, wherein each of the plurality of leads is associated with a respective location along the second axis;
displaying a first set of bar graphs representing the baseline ST-segment deviations, wherein each first bar graph is displayed with respect to one of the locations corresponding to a respective lead and is aligned relative to the first axis based on the baseline ST-segment deviation for the respective lead; and
displaying a second set of bar graphs representing the current ST-segment deviations, wherein each second bar graph is displayed with respect to one of the locations corresponding to a respective lead and is aligned relative to the first axis based on the current ST-segment deviation for the respective lead;
displaying a graphical indication in addition to the bar graphs to indicate whether the current ST-segment deviation for a particular lead is increasing or decreasing with respect to the baseline ST-segment deviation for that lead.
14. The computer-readable medium of claim 13 , wherein the graphical indication comprises one of an arrow or arrow head.
15. The computer-readable medium of claim 13 , wherein the graphical indication comprises a directed line segment.
16. The computer-readable medium of claim 13 , wherein the graphical indication is displayed on one or both of the first and second bar graph for a lead.
17. The computer-readable medium of claim 13 , wherein the graphical indication is displayed adjacent to one or both of the first and second bar graph for a lead.
18. The computer-readable medium of claim 13 , wherein the method further comprises:
displaying one or more threshold lines substantially parallel to the second linear axis, each threshold line representing a threshold ST-segment deviation value.
19. A method for monitoring a patient and graphically representing ST-segment deviations derived from electrocardiogram (ECG) signals from a plurality of leads, each ECG signal including a sequence of ST-segments between a QRS complex and a T wave, the method comprising:
obtaining a first set of data corresponding to a baseline ST-segment deviation from an isoelectric value for each of the plurality of leads at a first point in time;
obtaining a second set of data corresponding to an ST-segment deviation from an isoelectric value for each of the plurality of leads at a second point in time (“current ST-segment deviation”);
displaying a graph comprising:
a first axis representing ST-segment deviation values; and
a second axis representing the plurality of leads, wherein each of the plurality of leads is associated with a respective location along the second axis;
displaying a first set of bar graphs representing the baseline ST-segment deviations, wherein each first bar graph is displayed with respect to one of the locations corresponding to a respective lead and is aligned relative to the first axis based on the baseline ST-segment deviation for the respective lead;
displaying a second set of bar graphs representing the current ST-segment deviations, wherein each second bar graph is displayed with respect to one of the locations corresponding to a respective lead and is aligned relative to the first axis based on the current ST-segment deviation for the respective lead,
wherein a shape of at least one second bar graph indicates whether the current ST-segment deviation for a particular lead is increasing or decreasing with respect to the baseline ST-segment deviation for that lead.
20. The method of claim 19 , wherein the shape of the second bar graph comprises a rectangle with corners removed on a top side to indicate that the current ST-segment deviation is increasing with respect to the baseline ST-segment deviation.
21. The method of claim 19 , wherein the shape of the second bar graph comprises a rectangle with corners removed on a bottom side to indicate that the current ST-segment deviation is decreasing with respect to the baseline ST-segment deviation.
22. The method of claim 19 , wherein the shape of the second bar graph comprises a trapezoid, wherein a smaller base of the trapezoid is on top indicating that the current ST-segment deviation is increasing with respect to the baseline ST-segment deviation.
23. The method of claim 19 , wherein the shape of the second bar graph comprises a trapezoid, wherein a smaller base of the trapezoid is on bottom indicating that the current ST-segment deviation is decreasing with respect to the baseline ST-segment deviation.
24. A method for monitoring a patient and graphically representing ST-segment deviations derived from electrocardiogram (ECG) signals from a plurality of leads, each ECG signal including a sequence of ST-segments between a QRS complex and a T wave, the method comprising:
obtaining a first set of data corresponding to a baseline ST-segment deviation from an isoelectric value for each of the plurality of leads at a first point in time;
obtaining a second set of data corresponding to an ST-segment deviation from an isoelectric value for each of the plurality of leads at a second point in time (“current ST-segment deviation”);
displaying a graph comprising:
a first axis representing ST-segment deviation values; and
a second axis representing the plurality of leads, wherein each of the plurality of leads is associated with a respective location along the second axis;
displaying a first set of bar graphs representing the baseline ST-segment deviations, wherein each first bar graph is displayed with respect to one of the locations corresponding to a respective lead and is aligned relative to the first axis based on the baseline ST-segment deviation for the respective lead;
displaying a second set of bar graphs representing the current ST-segment deviations, wherein each second bar graph is displayed with respect to one of the locations corresponding to a respective lead and is aligned relative to the first axis based on the current ST-segment deviation for the respective lead; and
displaying one or more threshold lines substantially parallel to the second linear axis, each threshold line representing a threshold ST-segment deviation value.