US5622178A
Expired / Lapsed
US
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System and method for dynamically displaying cardiac interval data using scatter-plots
Assignee: Spacelabs Medical Inc
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Filing: 1994-05-04
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Granted: 1997-04-22
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Expires: 2014-05-04
Abstract
Abstract A system and method for the dynamic display of scatter-plot data uses a color monitor or gray-scale monitor to indicate the relative frequency of occurrences of interval pairs corresponding to the scatter-plot data. A variety of user selectable analysis and display parameters are available to select the type of data desired for the scatter-plot display. The user selectable parameters include time parameters that allow the user to review all scatter-plot data collected over a first period of time in smaller increments of time. The system can display different time increments in different colors or intensities. The system also permits the selection of a particular interval pair and display the raw data corresponding to the selected interval pair. If there is more than one occurrence of the selected interval pair, the system permits the user to select from the plurality of occurrences and displays the raw data associated with the selected occurrence. If the system uses cardiac data, the user can specify analysis parameters that include the selection of beat source for each interval in the interval pair, clinical labels corresponding to cardiac rhythms, and pacemaker or intrinsically generated heartbeats. The interval pair may be derived from three successive heartbeats. The system can scan through a data file collected over a period of time. The display can show new interval pairs in one color or intensity and older interval pairs in other colors or intensities to provide a fading action in the display.
Inventors
- 👤 Jeffrey J. Gilham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:39
CPC Classifications
G; G06; G06F; G06F18/00; G06F2218/00; G06F2218/12; G06F2218/16; G06F2218/18
Claims Analysis
Total Claims: 83
Claim 1
Independent Claim
180 words
A system for the display of cardiac data, the system comprising: an interval monitor to calculate first and second cardiac intervals from electrocardiograph data, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat; a source analyzer to receive said eletrocardiograph data and determine therefrom a beat source for each of said heartbeats; and a display having first and second axes each labeled with a plurality of indicators corresponding to time intervals for displaying said first and second intervals as a coordinate pair only if said source analyzer determines that said beat sources for said first, second, and third heartbeats match a set of selected heartbeat sources for said first, second, and third heartbeats, said first interval being displayed as a first coordinate in said coordinate pair using said plurality of indicators along said first axis, and said second interval being displayed as a second coordinate in said coordinate pair using said plurality of indicators along said second axis.
Claim 2
Independent Claim
180 words
A system for the display of cardiac data, the system comprising: an interval monitor to calculate first and second cardiac intervals from electrocardiograph data, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat; a source analyzer to receive said eletrocardiograph data and determine therefrom a beat source for each of said heartbeats; and a display having first and second axes each labeled with a plurality of indicators corresponding to time intervals for displaying said first and second intervals as a coordinate pair only if said source analyzer determines that said beat sources for said first, second, and third heartbeats match a set of selected heartbeat sources for said first, second, and third heartbeats, said first interval being displayed as a first coordinate in said coordinate pair using said plurality of indicators along said first axis, and said second interval being displayed as a second coordinate in said coordinate pair using said plurality of indicators along said second axis.
Claim 3
Dependent Claim
39 words
The system of claim 1, further including a cardiac monitor electrically coupled to a patient to detect electromagnetic signals indicative of the patient's heartbeat, said cardiac monitor generating said electrocardiograph data for said interval monitor and said source analyzer.
Claim 4
Dependent Claim
15 words
The system of claim 1, further including a data file to store said electrocardiograph data.
Claim 5
Dependent Claim
16 words
The system of claim 3 wherein said data file is a tape storing said electrocardiograph data.
Claim 6
Dependent Claim
18 words
The system of claim 3 wherein said data file is a data event recorder storing said electrocardiograph data.
Claim 7
Dependent Claim
40 words
The system of claim 1 wherein said first, second, and third heartbeats are successive heartbeats, said interval monitor calculating said first and second intervals for said successive heartbeats and said source analyzer determines said beat source for said successive heartbeats.
Claim 8
Dependent Claim
18 words
The system of claim 1 wherein said first and second axes are orthogonal with respect to each other.
Claim 9
Dependent Claim
23 words
The system of claim 1, further including selection means for selecting said set of heartbeat sources for said first, second and third heartbeats.
Claim 10
Dependent Claim
35 words
The system of claim 8 wherein said source analyzer determines said beat source from a set of heartbeat source comprising at least one of a normal heartbeat, ventricular heartbeat, pacer heartbeat, and an intrinsic heartbeat.
Claim 11
Dependent Claim
57 words
The system of claim 1, further including a heartbeat analyzer to receive said electrocardiograph data and determine therefrom a clinical type for each of said heartbeats, said display displaying said first and second intervals only for said first, second and third heartbeats whose clinical type matches a selected clinical type for said first, second and third heartbeats.
Claim 12
Dependent Claim
21 words
The system of claim 10, further including selection means for selecting said clinical type for said first, second and third heartbeats.
Claim 13
Dependent Claim
35 words
The system of claim 10 wherein said heartbeat analyzer determines said clinical type from a set of clinical types comprising at least one of a premature atrial complex clinical type and a pause clinical type.
Claim 14
Dependent Claim
83 words
The system of claim 1 wherein said display has a plurality of intensity data bits to represent an intensity value for said coordinate pair, said intensity value having an initial value such that said coordinate pair is not visible on said display, said display increasing said intensity value each time that said first and second intervals correspond to said coordinate pair, whereby said coordinate pair has a higher intensity value each time that said first and second intervals correspond to said coordinate pair.
Claim 15
Dependent Claim
18 words
The system of claim 13 wherein said display increases said intensity value by incrementing said intensity data bits.
Claim 16
Dependent Claim
75 words
The system of claim 13, further including timer means for measuring a predetermined period of time, said display decreasing said intensity value for said coordinate pair if said first and second intervals do not correspond to said coordinate pair within said predetermined period of time, whereby said coordinate pair has a lower intensity value each time that said first and second intervals do not correspond to said coordinate pair within said predetermined period of time.
Claim 17
Dependent Claim
50 words
The system of claim 13, further including timer means for measuring a predetermined period of time, said display setting said intensity value to said initial intensity value for said coordinate pair if said first and second intervals do not correspond to said coordinate pair within said predetermined period of time.
Claim 18
Dependent Claim
80 words
The system of claim 1 wherein said display is a color display, said color display having a plurality of color data bits representing a color value corresponding to a plurality of colors for said coordinate pair, said color data bits having an initial color value such that said coordinate pair is not visible on said display, said display altering said color data bits in a first manner each time that said first and second intervals correspond to said coordinate pair.
Claim 19
Dependent Claim
50 words
The system of claim 17, further including timer means for measuring a predetermined period of time, said display altering said color data bits in a second manner for said coordinate pair if said first and second intervals do not correspond to said coordinate pair within said predetermined period of time.
Claim 20
Dependent Claim
61 words
The system of claim 18 wherein said second manner of altering said color data bits is opposite said first manner of altering said color data bits, whereby the color data bits corresponding to said coordinate pair changes back to a previous color if said first and second intervals do not correspond to said coordinate pair within said predetermined period of time.
Claim 21
Dependent Claim
51 words
The system of claim 17, further including timer means for measuring a predetermined period of time, said display setting said color data bits to said initial color value for said coordinate pair if said first and second intervals do not correspond to said coordinate pair within said predetermined period of time.
Claim 22
Independent Claim
25 words
The system of any of the preceding claims 15, 16, 18, or 20, further including user selectable means for altering said predetermined period of time.
Claim 23
Dependent Claim
35 words
The system of claim 1, further including timer means for measuring a first period of time, said display displaying said coordinate pair when said first and second intervals occur during said first period of time.
Claim 24
Dependent Claim
22 words
The system of claim 22, further including storage means for storing said coordinate pair being displayed during said first period of time.
Claim 25
Dependent Claim
70 words
The system of claim 23, further including user selectable means for selecting a second period of time less than said first period of time, said display displaying said stored coordinate pair for said first and second intervals occur during said second period of time, whereby the user can review said stored coordinate pair for any portion of said first period of time in increments of said second period of time.
Claim 26
Dependent Claim
30 words
The system of claim 23 wherein said display displays said coordinate pair for a second period of time for which said first, second, and third heartbeats fit user selectable criteria.
Claim 27
Dependent Claim
28 words
The system of claim 25 wherein said user selectable criteria comprises at least one of a heart rate criterion, a beat source criterion, and a clinical type criterion.
Claim 28
Dependent Claim
67 words
The system of claim 25 wherein said display is a color display, said color display having a plurality of color data bits representing a color value corresponding to a plurality of colors for said coordinate pair, said color display displaying said coordinate pair in a first color for a first user selectable criteria and said coordinate pair in a second color for a second user selectable criteria.
Claim 29
Dependent Claim
85 words
The system of claim 1 wherein said display is a color display, said color display having a plurality of color data bits representing a color value corresponding to a plurality of colors for said coordinate pair, said color data bits having an initial color value such that said coordinate pair is not visible on said display, said display altering said color data bits to generate a first color different from said initial color value when said first and second intervals correspond to said coordinate pair.
Claim 30
Dependent Claim
42 words
The system of claim 28, further including timer means for measuring a first predetermined period of time, said color display generating said first color for said coordinate pair when said first and second intervals occur during said first predetermined period of time.
Claim 31
Dependent Claim
48 words
The system of claim 29 wherein said timer means measures a second predetermined period of time, said color display generating a second color different from said initial and first colors for said coordinate pair when said first and second intervals occur during said second predetermined period of time.
Claim 32
Dependent Claim
20 words
The system of claim 30 wherein said first and second predetermined periods of time correspond to different times of day.
Claim 33
Dependent Claim
44 words
The system of claim 1 wherein said interval monitor comprises a means for calculating said first and second intervals only for said first, second, and third heartbeats whose beat sources are determined by said source analyzer to match said set of selected heartbeat sources.
Claim 34
Independent Claim
180 words
A system for the display of cardiac data, the system comprising: an interval monitor to calculate first and second cardiac intervals from electrocardiograph data, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat; timer means, coupled to said interval monitor and receiving data corresponding to said first and second cardiac intervals, for determining if said first and second intervals meet a predetermined threshold time criterion; and a display having first and second axes each labeled with a plurality of indicators corresponding to time intervals for displaying said first and second intervals as a coordinate pair only if said timer means determines that said first and second intervals meet said predetermined threshold time criterion, said first interval being displayed as a first coordinate in said coordinate pair using said plurality of indicators along said first axis, and said second interval being displayed as a second coordinate in said coordinate pair using said plurality of indicators along said second axis.
Claim 35
Independent Claim
180 words
A system for the display of cardiac data, the system comprising: an interval monitor to calculate first and second cardiac intervals from electrocardiograph data, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat; timer means, coupled to said interval monitor and receiving data corresponding to said first and second cardiac intervals, for determining if said first and second intervals meet a predetermined threshold time criterion; and a display having first and second axes each labeled with a plurality of indicators corresponding to time intervals for displaying said first and second intervals as a coordinate pair only if said timer means determines that said first and second intervals meet said predetermined threshold time criterion, said first interval being displayed as a first coordinate in said coordinate pair using said plurality of indicators along said first axis, and said second interval being displayed as a second coordinate in said coordinate pair using said plurality of indicators along said second axis.
Claim 36
Dependent Claim
17 words
The system of claim 33, further including user selectable means for altering said predetermined threshold time criterion.
Claim 37
Dependent Claim
41 words
The system of claim 33 wherein said predetermined threshold time criterion is a minimum threshold time, said display displaying said coordinate pair only if said timer means determines that said first and second intervals are greater than said minimum threshold time.
Claim 38
Dependent Claim
41 words
The system of claim 33 wherein said predetermined threshold time criterion is a maximum threshold time, said display displaying said coordinate pair only if said timer means determines that said first and second intervals are less than said maximum threshold time.
Claim 39
Dependent Claim
28 words
The system of claim 33 wherein said first, second, and third heartbeats are successive heartbeats said interval monitor calculating said first and second intervals for said successive heartbeats.
Claim 40
Dependent Claim
50 words
The system of claim 33, further including a source analyzer to receive said electrocardiograph data and determine therefrom a beat source for each of said heartbeats, said display displaying only said coordinate pairs whose beat sources match a set of selected heartbeat sources for said first, second and third heartbeats.
Claim 41
Dependent Claim
23 words
The system of claim 38, further including selection means for selecting said set of heartbeat sources for said first, second and third heartbeats.
Claim 42
Dependent Claim
35 words
The system of claim 38 wherein said source analyzer determines said beat source from a set of heartbeat sources comprising at least one of a normal heartbeat, ventricular heartbeat, pacer heartbeat, and an intrinsic heartbeat.
Claim 43
Dependent Claim
55 words
The system of claim 33, further including a heartbeat analyzer to receive said electrocardiograph data and determine therefrom a clinical type for each of said heartbeats, said display displaying said coordinate pairs only for said first, second and third heartbeats whose clinical type matches a selected clinical type for said first, second and third heartbeats.
Claim 44
Dependent Claim
21 words
The system of claim 41, further including selection means for selecting said clinical type for said first, second and third heartbeats.
Claim 45
Dependent Claim
35 words
The system of claim 41 wherein said heartbeat analyzer determines said clinical type from a set of clinical types comprising at least one of a premature atrial complex clinical type and a pause clinical type.
Claim 46
Independent Claim
203 words
A system for the display of cardiac data, the system comprising: storage means for storing electrocardiograph data collected from a patient over a predetermined period of time; an interval monitor to calculate first and second cardiac intervals for said predetermined period of time from said electrocardiograph data, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat; a display coupled to said interval monitor to receive said first and second intervals therefrom, said display having first and second axes each labeled with a plurality of indicators corresponding to time intervals for displaying said first and second intervals as a plurality of coordinate pairs, each of said first intervals being displayed as a first coordinate in said coordinate pair using said plurality of indicators along said first axis, and each of said second intervals being displayed as a second coordinate in said coordinate pair using said plurality of indicators along said second axis; selection means for selecting a particular one of said plurality of coordinate pairs on said display; and display means for displaying said electrocardiograph data associated with said selected coordinate pair.
Claim 47
Independent Claim
203 words
A system for the display of cardiac data, the system comprising: storage means for storing electrocardiograph data collected from a patient over a predetermined period of time; an interval monitor to calculate first and second cardiac intervals for said predetermined period of time from said electrocardiograph data, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat; a display coupled to said interval monitor to receive said first and second intervals therefrom, said display having first and second axes each labeled with a plurality of indicators corresponding to time intervals for displaying said first and second intervals as a plurality of coordinate pairs, each of said first intervals being displayed as a first coordinate in said coordinate pair using said plurality of indicators along said first axis, and each of said second intervals being displayed as a second coordinate in said coordinate pair using said plurality of indicators along said second axis; selection means for selecting a particular one of said plurality of coordinate pairs on said display; and display means for displaying said electrocardiograph data associated with said selected coordinate pair.
Claim 48
Dependent Claim
55 words
The system of claim 44 wherein said first and second intervals correspond to said selected coordinate pair a plurality of occurrences during said predetermined period of time, the system further including occurrence selection means for selecting a particular one of said plurality of occurrences, said display displaying said electrocardiograph data associated with said selected occurrence.
Claim 49
Dependent Claim
38 words
The system of claim 44 wherein said occurrence selection means includes a scroll bar to permit the user to scroll through said plurality of occurrences, said display displaying said electrocardiograph data associated with each of said scrolled occurrences.
Claim 50
Dependent Claim
14 words
The system of claim 44, further including edit means for editing said electrocardiograph data.
Claim 51
Dependent Claim
27 words
The system of claim 47, wherein said interval monitor recalculates said first and second intervals from said edited electrocardiograph data and said display displays said recalculated intervals.
Claim 52
Independent Claim
192 words
A system for the display of cardiac data, the system comprising: an interval monitor to calculate first and second cardiac intervals from electrocardiograph data containing a plurality of heartbeats, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat, said first and second intervals defining a plurality of interval pairs; a source analyzer to receive said electrocardiograph data and determine therefrom a beat source for each of said heartbeats, each of said plurality of interval pairs corresponding to said first, second and third heartbeats whose beat sources match a set of selected heartbeat sources for said first, second and third heartbeats being defined as a qualified interval pair; and a display coupled to said interval monitor and said source analyzer to display said qualified interval pair, said display having first and second axes and displaying said first interval of said qualified interval pair as a first coordinate in a coordinate pair using said first axis, and said second interval as a second coordinate in said coordinate pair using said second axis.
Claim 53
Independent Claim
192 words
A system for the display of cardiac data, the system comprising: an interval monitor to calculate first and second cardiac intervals from electrocardiograph data containing a plurality of heartbeats, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat, said first and second intervals defining a plurality of interval pairs; a source analyzer to receive said electrocardiograph data and determine therefrom a beat source for each of said heartbeats, each of said plurality of interval pairs corresponding to said first, second and third heartbeats whose beat sources match a set of selected heartbeat sources for said first, second and third heartbeats being defined as a qualified interval pair; and a display coupled to said interval monitor and said source analyzer to display said qualified interval pair, said display having first and second axes and displaying said first interval of said qualified interval pair as a first coordinate in a coordinate pair using said first axis, and said second interval as a second coordinate in said coordinate pair using said second axis.
Claim 54
Dependent Claim
57 words
The system of claim 49, further including a heartbeat analyzer to determine a clinical type for each of said heartbeats, each of said plurality of interval pairs corresponding to said first, second and third heartbeats whose clinical type matches a selected clinical type for said first, second and third heartbeats being defined as said qualified interval pair.
Claim 55
Dependent Claim
40 words
The system of claim 49 wherein said first, second, and third heartbeats are successive heartbeats, said interval monitor calculating said first and second intervals for said successive heartbeats and said source analyzer determines said beat source for said successive heartbeats.
Claim 56
Dependent Claim
44 words
The system of claim 49 wherein said interval monitor comprises a means for calculating said first and second intervals only for said first, second, and third heartbeats whose beat sources are determined by said source analyzer to match said set of selected heartbeat sources.
Claim 57
Independent Claim
155 words
A method for the display of cardiac data on a display having first and second axes each labeled with a plurality of indicators corresponding to time intervals, the method comprising the steps of: calculating first and second cardiac intervals from electrocardiograph data, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat; determining a beat source for each of said heartbeats; and displaying said first and second intervals as a coordinate pair on the display only if said beat source for each of said heartbeats matches a set of selected beat sources for said first, second, and third heartbeats, said first interval being displayed as a first coordinate in said coordinate pair using the first axis, and said second interval being displayed as a second coordinate in said coordinate pair using the second axis.
Claim 58
Independent Claim
155 words
A method for the display of cardiac data on a display having first and second axes each labeled with a plurality of indicators corresponding to time intervals, the method comprising the steps of: calculating first and second cardiac intervals from electrocardiograph data, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat; determining a beat source for each of said heartbeats; and displaying said first and second intervals as a coordinate pair on the display only if said beat source for each of said heartbeats matches a set of selected beat sources for said first, second, and third heartbeats, said first interval being displayed as a first coordinate in said coordinate pair using the first axis, and said second interval being displayed as a second coordinate in said coordinate pair using the second axis.
Claim 59
Dependent Claim
54 words
The method of claim 53 wherein a cardiac monitor is electrically coupled to a patient to detect electromagnetic signals indicative of the patient's heartbeat and generate electrocardiograph data related thereto, said step of calculating said first and second intervals calculating said first and second intervals from said electrocardiograph data generated by said cardiac monitor.
Claim 60
Dependent Claim
28 words
The method of claim 53 wherein said first, second, and third heartbeats are successive heartbeats, said steps of calculating, determining, and displaying being performed on said successive heartbeats.
Claim 61
Dependent Claim
23 words
The method of claim 53, further including the step of selecting said set of heartbeat sources for said first, second and third heartbeats.
Claim 62
Dependent Claim
39 words
The method of claim 56 wherein said step of determining said beat sources determines said beat sources from a set of heartbeat sources comprising at least one of a normal heartbeat, ventricular heartbeat, pacer heartbeat, and an intrinsic heartbeat.
Claim 63
Dependent Claim
57 words
The method of claim 53, further including the step of determining a clinical type for each of said heartbeats, said step of displaying said first and second intervals only displaying said first and second intervals for said first, second and third heartbeats whose clinical type matches a selected clinical type for said first, second and third heartbeats.
Claim 64
Dependent Claim
21 words
The method of claim 58, further including the step of selecting said clinical type for said first, second and third heartbeats.
Claim 65
Dependent Claim
39 words
The method of claim 58 wherein said step of determining said clinical type determines said clinical type from a set of clinical types comprising at least one of a premature atrial complex clinical type and a pause clinical type.
Claim 66
Dependent Claim
40 words
The method of claim 53, further including the step of: measuring a first period of time, said step of displaying said coordinate pair displaying said coordinate pair when said first and second intervals occur during said first period of time.
Claim 67
Dependent Claim
22 words
The method of claim 61, further including the step of storing said coordinate pair being displayed during said first period of time.
Claim 68
Dependent Claim
43 words
The method of claim 62 wherein said step of displaying said coordinate pair displays said coordinate pair when said first and second intervals occur during a second predetermined period of time for which said first, second, and third heartbeats fit user selectable criteria.
Claim 69
Dependent Claim
28 words
The method of claim 63 wherein said user selectable criteria comprises at least one of a heart rate criterion, a beat source criterion, and a clinical type criterion.
Claim 70
Dependent Claim
68 words
The method of claim 63 wherein the display is a color display having a plurality of color data bits representing a color value corresponding to a plurality of colors for said coordinate pair, said step of displaying said coordinate pair displaying said coordinate pair in a first color for a first user selectable criteria and said coordinate pair in a second color for a second user selectable criteria.
Claim 71
Dependent Claim
39 words
The method of claim 53 wherein said step of calculating said first and second intervals calculates said first and second intervals only for said first, second, and third heartbeats whose beat sources match said set of selected heartbeat sources.
Claim 72
Independent Claim
132 words
A method for the display of cardiac data, the method comprising the steps of: calculating first and second cardiac intervals from electrocardiograph data, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat; measuring a predetermined threshold time criterion associated with said first and second intervals; and displaying said first and second intervals as a coordinate pair only if said first and second intervals meet said predetermined threshold time criterion, said first interval being displayed as a first coordinate in said coordinate pair using a first axis on the display, and said second interval being displayed as a second coordinate in said coordinate pair using a second axis on the display.
Claim 73
Independent Claim
132 words
A method for the display of cardiac data, the method comprising the steps of: calculating first and second cardiac intervals from electrocardiograph data, said first interval corresponding to a period of time between first and second heartbeats, said second interval corresponding to a period of time between said second heartbeat and a third heartbeat; measuring a predetermined threshold time criterion associated with said first and second intervals; and displaying said first and second intervals as a coordinate pair only if said first and second intervals meet said predetermined threshold time criterion, said first interval being displayed as a first coordinate in said coordinate pair using a first axis on the display, and said second interval being displayed as a second coordinate in said coordinate pair using a second axis on the display.
Claim 74
Dependent Claim
16 words
The method of claim 67, further including the step of altering said predetermined threshold time criterion.
Claim 75
Dependent Claim
39 words
The method of claim 67 wherein said predetermined threshold time criterion is a minimum threshold time, said first and second intervals being displayed only for first, second, and third heartbeats whose intervals are greater than said minimum threshold time.
Claim 76
Dependent Claim
39 words
The method of claim 67 wherein said predetermined threshold time criterion is a maximum threshold time, said first and second intervals being displayed only for first, second, and third heartbeats whose intervals are less than said maximum threshold time.
Claim 77
Dependent Claim
28 words
The method of claim 67 wherein said first, second, and third heartbeats are successive heartbeats, said steps of calculating, measuring and displaying being performed on said successive heartbeats.
Claim 78
Dependent Claim
59 words
The method of claim 67, further including the step of determining a beat source for each of said heartbeats, said step of displaying said first and second intervals displaying said first and second intervals only for said first, second and third heartbeats whose beat sources match a set of selected heartbeat sources for said first, second and third heartbeats.
Claim 79
Dependent Claim
23 words
The method of claim 72, further including the step of selecting said set of heartbeat sources for said first, second and third heartbeats.
Claim 80
Dependent Claim
39 words
The method of claim 72 wherein said step of determining said beat sources determines said beat sources from a set of heartbeat sources comprising at least one of a normal heartbeat, ventricular heartbeat, pacer heartbeat, and an intrinsic heartbeat.
Claim 81
Dependent Claim
57 words
The method of claim 67, further including the step of determining a clinical type for each of said heartbeats, said step of displaying said first and second intervals displaying said first and second intervals only for said first, second and third heartbeats whose clinical type matches a selected clinical type for said first, second and third heartbeats.
Claim 82
Dependent Claim
21 words
The method of claim 75, further including the step of selecting said clinical type for said first, second and third heartbeats.
Claim 83
Dependent Claim
39 words
The method of claim 75 wherein said step of determining said clinical type determines said clinical type from a set of clinical types comprising at least one of a premature atrial complex clinical type and a pause clinical type.
References Cited (Backward Citations)
US4499904A
Cited
SU1304801A1
Cited
US4732157A
Cited
US4964410A
Cited
US4934374A
Cited
US5012815A
Cited
US5146926A
Cited
US5224486A
Cited
EP0565084A2
Cited
US5285793A
Cited
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