Data analysis system

• US 7,081,091 B2
• Filed: 08/29/2002
• Issued: 07/25/2006
• Est. Priority Date: 05/31/2002
• Status: Expired due to Fees

• Current Assignee: Qinetiq Limited (QinetiQ Group PLC)
• Original Assignee: Qinetiq Limited (QinetiQ Group PLC)
• Inventors: Merrett, Philip Jonathan, Shaikh, Loua Asad-Hanna Al
• Primary Examiner(s): Hindenburg, Max F.
• Assistant Examiner(s): ASTORINO, MICHAEL C
• Application Number:
  US10/230,395
• Publication Number:
  US 20030225315A1
• Time in Patent Office: 1,426 Days
• Field of Search: 600300-301, 600508-509, 600523-525, 128920-925, 128/904, 128/903, 340/501, 340/540, 340/573.1, 340/995.15, 340/539.1, 345/530, 705 2- 4, 3791061- 2, 700/83
• US Class Current: 600/300
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/339 Displays specially adapted therefor
• CPC Class Codes: A61B 5/7445 Display arrangements, e.g. multiple display units
• CPC Class Codes: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems
• CPC Class Codes: G16H 50/30 for calculating health indices; for individual health risk assessment
• CPC Class Codes: Y10S 128/92 Computer assisted medical diagnostics

Abstract

A system and method for gathering and displaying information in data intensive environments. It is particularly concerned with data analysis in a critical care environment to provide a graphical display of derived information, comprising a series of bar charts representative of a corresponding series of functions. Each bar chart comprises a linear series of time-divided segments wherein each segment of each bar chart is assigned a colour corresponding to the status of that function. The status of each function is derived by scoring contributory data indicators in accordance with pre-set threshold values, and logically combining to produce a status score for each function. Interventions that affect particular functions may also be recorded and displayed against those functions so that their effect is readily discernible.

Claims

1. A method of analysis of data measured in a time-varying environment, the method comprising the steps of:

(a) recording data items generated during a selected time period from both monitoring equipment and recording intervention data entered by personnel;

(b) comparing each data item recorded at step (a) with preset threshold values;

(c) selecting a group of functions, each function having a status which is contributory to an overall status of the environment and the number of functions in the group being less than the number of data items, scoring each function on the basis of the comparisons made at step (b) for all data items indicative of the status of that function;

(d) converting scores obtained at step (c) to a color representation and assigning these colors to correspondingly scoring functions at the time period,

(e) displaying a series of bar charts on a display screen, wherein each bar chart corresponds to one of the group of functions and comprises a linear series of time-divided segments, and wherein each segment corresponding to the time period on each bar chart is colored with the color assigned to the corresponding function at step (d); and

(f) repeating steps (a) to (e) for an adjacent time period, while preserving bar chart segment coloration for at least one previous time period,

wherein the data items relate to the physical condition of a patient and the group of functions comprise the functioning of six of respiratory, cardiovascular, coagulation, renal, hepatic, neurological systems, and gastrointestinal systems.

2. A method according to claim 1 wherein the group of functions comprise the functioning of all seven of the respiratory, cardiovascular, coagulation, renal, hepatic, neurological systems, and gastrointestinal systems.

3. A method according to claim 1 wherein the scoring step is carried out in accordance with a Sequential Organ Failure Assessment (SOFA) scoring system, or a modified version thereof.

4. A method according to claim 1 wherein bar chart segment coloration is preserved for at least 8 previous time periods.

5. A method according to claim 4 wherein each time period is one hour long.

6. A method according to claim 4 wherein each bar chart extends horizontally across the display with each successive time period.

7. A computer system programmed to provide a graphical display of derived information, the display comprising a series of bar charts representative of a corresponding series of functions, each bar chart comprising a linear series of time-divided segments, wherein each segment of each bar chart is one of a set of permitted colors;

to assign the colors to the segments in accordance with the status of the corresponding function at the time period represented by that segment; and

to derive the status of each function from a number of data indicators extracted from a database, wherein each data indicator comprises an experimental observation made on a system at a time corresponding to the time period represented in the bar chart by the relevant segment, and the status of each function is derived by scoring contributory data indicators in accordance with preset threshold values to produce a status score for each function,

wherein the data indicators include data relating to data items read from a database, the data items comprising data generated during a selected time period from monitoring equipment and intervention data entered by personnel,

wherein the data items relate to the physical condition of a patient and the group of functions comprise the functioning of six of respiratory, cardiovascular, coagulation, renal, hepatic, neurological systems, and gastrointestinal systems.

8. A computer system according to claim 7 wherein the data indicators comprise observations made on a hospital patient.

9. A computer system according to claim 8 wherein the data indicators comprise information indicative of at least one of patient blood pressure, heart rate, temperature, central venous pressure, pulmonary artery catheter data, cardiac output, vascular resistance, urine output, respiratory rate, blood chemistry, hemoglobin, white cells, coagulation profile and arterial blood gases.

10. A computer system according to claim 7 wherein the status of each function is derived from the data indicators in accordance with one of a Sequential Organ Failure Assessment (SOFA) scoring system, or a modified SOFA scoring system.

11. A subject monitoring system which graphically displays derived information, the system comprising:

monitoring equipment arranged to make periodic observations on said subject, a database arranged to store as data items results of periodic observations made by the monitoring equipment,

manual data input equipment arranged to enable entering and recording of intervention data in the database;

a processor arranged to analyze periodically the stored data items to provide an indication as to status of a selected group of functions, the status of each function being deducible as a score from a subset of the data items compared with preset threshold values, and

a display arranged to display a series of bar charts representative of the group of functions, each bar chart comprising a linear series of time-divided segments wherein each segment of each bar chart is one of a set of permitted colors, the colors being assigned to the segments in accordance with the score obtained for the corresponding function at the time period represented by that segment and to display data representative of the intervention data,

wherein the monitoring equipment comprise medical monitoring equipment and said subject is a patient and the functions comprise the functioning of six of respiratory, cardiovascular, coagulation, renal, hepatic, neurological systems, and gastrointestinal systems.

12. A monitoring system according to claim 11, wherein the data indicators comprise information indicative of at least one of patient blood pressure, heart rate, temperature, central venous pressure, pulmonary artery catheter data, cardiac output, vascular resistance, urine output, respiratory rate, blood chemistry, hemoglobin, white cells, coagulation profile and arterial blood gases.

13. A monitoring system according to claim 11, wherein the status of each function is derived from the data indicators in accordance with a Sequential Organ Failure Assessment (SOFA) scoring system, or a modified SOFA scoring system.

14. A programmable digital computer, said computer programmed for:

(a) reading data items from a database, the data items comprising data generated during a selected time period from monitoring equipment and intervention data entered by personnel;

(b) comparing each data item with preset threshold values;

(c) scoring each of a selected group of functions, each function having a status which is contributory to an overall status of the environment and the number of functions in the group being less than the number of data items, said scoring on the basis of the comparisons made for all data items indicative of the status of that function;

(d) converting function scores to a color representation and assigning these colors to corresponding scoring functions in the time period; and

(e) displaying a series of bar charts on a display screen, wherein each bar chart corresponds to one of the group of functions and comprises a linear series of time-divided segments, and wherein each segment corresponding to the time period on each bar chart is colored with the color assigned to the corresponding function,

wherein the data items comprise observations made on a patient and the group of functions comprise the functioning of six of respiratory, cardiovascular, coagulation, renal, hepatic, neurological systems, and gastrointestinal systems.

15. A programmable digital computer according to claim 14, wherein the data items comprise information indicative of at least one of patient blood pressure, heart rate, temperature, central venous pressure, pulmonary artery catheter data, cardiac output, vascular resistance, urine output, respiratory rate, blood chemistry, hemoglobin, white cells, coagulation profile and arterial blood gases.

16. A programmable digital computer according to claim 14, wherein the status of each function is derived from the data indicators in accordance with a Sequential Organ Failure Assessment (SOFA) scoring system or a modified SOFA scoring system.

21. A method of analysis according to claim 16, wherein a protocol by which an intervention is conducted is additionally recorded and is at least displayed or accessible for display by the user.

17. A method of analysis of data measured in an environment that varies with time, the method comprising the steps of:

(a) recording data generated during selected time interval(s) from monitoring equipment and intervention data entered by personnel;

(b) comparing each data item gathered at step (a) with preset threshold values;

(c) for each of a selected group of functions, each function having a status which is contributory to an overall status of the environment and the number of functions in the group being less than the number of data items, scoring each function on the basis of the comparisons made at step (b) for all data items indicative of the status of that function;

(d) converting scores obtained at step (c) to one of a number of selected visual representations and assigning those representations to correspondingly scoring functions for a specific time period;

(e) recording at least one intervention conducted upon, and capable of affecting, the environment;

(f) displaying a series of graphical representations on a display screen, wherein each graphical representation corresponds to one of the group of functions and comprises a series of time-divided segments arranged sequentially, and wherein each segment corresponding to the time period on each graphical representation is visually represented according to the visual representation assigned to the corresponding function at step (d);

(g) displaying on the display screen the at least one intervention adjacent to at least one of the segments corresponding to the time of the intervention and adjacent to a timeline corresponding to the time-divided segments so as to facilitate a comparison of the effect of the intervention on the environment; and

(h) repeating steps (a) to (e) for an adjacent time period, whilst preserving the segment'"'"'s visual representation for at least one previous time period,

wherein the data relates to the physical condition of a patient and the group of functions comprise the functioning of six of respiratory, cardiovascular, coagulation, renal, hepatic, neurological systems, and gastrointestinal systems.

18. A method of analysis according to claim 17, wherein the intervention is displayed against the segments of at least one of the functions that said intervention is capable of affecting.

19. A method of analysis according to claim 17, wherein the intervention is displayed as at least one of selected details and a marker.

20. A method of analysis according to claim 18, in which a marker is solely employed, but further details of the intervention are accessible for display by the user.

22. A program product for a computer stored on a machine-readable medium, said program product comprising code portions for:

(a) reading data items from a database, the data items comprising data generated during a selected time period from monitoring equipment and intervention data entered by personnel;

(b) comparing each data item with preset threshold values;

(c) scoring each of a selected group of functions, each function having a status which is contributory to an overall status of the environment and the number of functions in the group being less than the number of data items, scoring being done on the basis of the comparisons made for all data items indicative of the status of that function;

(d) converting function scores to a color representation and assigning these colors to corresponding scoring functions in the time period,

(e) displaying a series of bar charts on a display screen, wherein each bar chart corresponds to one of the group of functions and comprises a linear series of time-divided segments, and wherein each segment corresponding to the time period on each bar chart is colored with the color assigned to the corresponding function,

wherein the data items comprise observations made on a patient and the group of functions comprise the functioning of six of respiratory, cardiovascular, coagulation, renal, hepatic, neurological systems, and gastrointestinal systems.