PATIENT MONITORING SYSTEMS WITH GOAL INDICATORS
Embodiments of the present disclosure relate to patient monitors designed to display goal indicators showing progress toward achieving patient monitoring goals. The goal indicators may be displayed on a main monitoring screen of the patient monitors, allowing caretakers to easily evaluate how effective they have been in managing the patient's condition. According to certain embodiments, the goal indicators may display a numerical value indicating the percentage of time that a physiological parameter was within predetermined goal limits. The patient monitors further may include user interfaces that enable a clinician to adjust parameters of the goal indicators, such as the goal limits and/or the goal time frame.
This application is a continuation of U.S. application Ser. No. 13/174,446, filed Jun. 30, 2011, the disclosure of which is hereby incorporated by reference in its entirety for all purposes.
BACKGROUNDThe present disclosure relates generally to patient monitoring systems and, more particularly, to patient monitoring systems designed to display goal indicators depicting progress toward achieving patient monitoring goals.
This section is intended to introduce the reader to various aspects of art that may be related to various aspects of the present disclosure, which are described and/or claimed below. This discussion is believed to be helpful in providing the reader with background information to facilitate a better understanding of the various aspects of the present disclosure. Accordingly, it should be understood that these statements are to be read in this light, and not as admissions of prior art.
In the field of medicine, doctors often desire to monitor certain physiological characteristics of their patients. Accordingly, a wide variety of devices have been developed for monitoring many such characteristics of a patient. Such devices provide doctors and other healthcare personnel with the information they need to provide the best possible healthcare for their patients. As a result, such monitoring devices have become an indispensable part of modern medicine.
Patient monitors include medical devices that facilitate measurement and observation of patient physiological data. For example, pulse oximeters are a type of patient monitor. A typical patient monitor cooperates with a sensor to detect and display a patient's vital signs (e.g., temperature, pulse rate, respiratory rate) and/or other physiological measurements (e.g., water content of tissue, blood oxygen level) for observation by a user (e.g., clinician). For example, pulse oximeters are generally utilized with related sensors to detect and monitor a patient's functional oxygen saturation of arterial hemoglobin (i.e., SpO2) and pulse rate. Other types of patient monitors, such as blood pressure monitors, may be utilized to detect and monitor other physiological parameters. Further, the patient monitors may be incorporated into other types of medical devices, such as mechanical ventilators and anesthesia machines, among others.
A patient monitor may be designed to alert a caregiver when certain physiological conditions are recognized. For example, a pulse oximeter may produce a visual and/or audible alarm when a patient's oxygen saturation falls below a predetermined threshold. The predetermined alarm thresholds may be set by the patient monitor, and, in certain circumstances, may be customizable by a user. Further, in addition to alarm thresholds, a patient monitor may be designed to provide more complex alarm features. For example, a patient monitor may be designed to display trends showing historical alarm data. The trends may be designed to display predetermined ranges of data and may be accessed by navigating through menus and/or screens of the patient monitor, which may complicate access to the historical data.
Advantages of the disclosed techniques may become apparent upon reading the following detailed description and upon reference to the drawings in which:
One or more specific embodiments of the present techniques will be described below. In an effort to provide a concise description of these embodiments, not all features of an actual implementation are described in the specification. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
The present disclosure relates to patient monitors designed to display goal indicators showing progress toward achieving patient monitoring goals. The goal indicators may be displayed on a main monitoring screen of the patient monitors, allowing caretakers to easily evaluate how effective they have been in managing the patient's condition. According to certain embodiments, the goal indicators may display a numerical value indicating the percentage of time that a physiological parameter, such as SpO2 or pulse rate, was within predetermined goal limits. For example, the patient monitors may calculate the percentage of time that the physiological parameter was within the goal limits over a time frame, such as a rolling 24-hour or 12-hour period, among others. The patient monitors further may include user interfaces that enable a clinician to adjust parameters of the goal indicators, such as the goal limits and/or the goal time frame. For example, in certain embodiments, the goal limits may be set to correspond to existing alarm limits or may be set tighter or looser than certain alarm limits.
The goal indicators may be designed to provide immediate feedback to caretakers indicating how well a patient's physiological parameters have been maintained within a certain range, which may result in tighter control of patient physiological parameters, and therefore, improved patient outcomes. For example, the goal indicators may be employed to maintain a patient's SpO2 above a lower limit designed to avoid or to minimize insufficient oxygenation of the arterial blood, often referred to as hypoxemia, and/or below an upper limit designed to avoid or to minimize excessive oxygenation of the blood, often referred to as hyperoxemia. It may be particularly desirable to monitor for hyperoxemia, in addition to hypoxemia, in neonatal intensive care units (NICU) to prevent outcomes that are common in premature infants, such as retinopathy of prematurity (ROP) and bronchopulmonary dysplasia (BPD). It also may be beneficial to monitor for hyperoxemia, in addition to hypoxemia, in adult patients to inhibit the suppression of respiratory drive that can be caused by hyperoxemia. However, in other embodiments, the goal indicators may be employed to promote control of a physiological parameter above a lower limit or below an upper limit. For example, the goal indicators may be employed to maintain a patient's SpO2 above a lower limit to avoid or to minimize hypoxemia. Further, in yet other embodiments, the goal indicators may be employed to maintain other physiological parameters, such as pulse rate, within a certain range.
The patient monitor 10 includes a front panel 12 coupled to a body 14 of the patient monitor 10. The front panel 12 may include several selectable inputs 16 that may be actuated by a caretaker to operate the patient monitor 10. For example, the selectable inputs 16 may include buttons that may be pressed to change information shown on a display 18. In other embodiments, the size, shape, locations, and/or labels for the selectable inputs 16 may vary. For example, the selectable inputs 16 may be arranged on different parts of the patient monitor 10 and/or located on an external device. In another example, some or all of the selectable inputs 16 may be graphical elements selected through a touch screen of the patient monitor 10 or through a touch screen of an external device. Further, some or all of the selectable inputs 16 may include different types of inputs, such as knobs, buttons, slide bars, joysticks, and/or wheels, among others.
In certain embodiments, the display 18 may include a cathode ray tube or liquid crystal display. Moreover, the display 18 may include an optional touch screen. In general, the display 18 may show processed physiological data and/or other data received through a medical device interface 20, such as a cable connection port, from a patient sensor 22, or other suitable medical device, such as a therapy device. As shown, the medical device interface 20 includes a cable connection port. However, in other embodiments, the medical device interface 20 may any suitable type of interface for connecting to a medical device. For example, in certain embodiments, the medical device interface 20 may include a wireless interface.
According to certain embodiments, the display 18 may be used to display an oxygen saturation 24 and/or a pulse rate 26. The oxygen saturation 24 may be a functional arterial hemoglobin oxygen saturation measurement displayed as units of percentage SpO2. The pulse rate 26 may indicate a patient's pulse rate in beats per minute. The display 18 also may be used to display a blip bar 28 that displays the relative pulse amplitude. Although the display 18 is currently shown displaying a monitoring mode, which provides a monitoring overview that is easy to read from a distance, the display 18 also may be used to show topic-specific screens related to the physiological data. For example, the display 18 may be used to show a plethysmographic (“pleth”) waveform display that allows visual monitoring of the pleth waveform. Moreover, the display 18 may be used to display user interface options, such as a setup and/or configuration screen for adjusting parameters such as alarm volume, display scales, alarm limits, and goal limits employed by the goal indicators, among others.
In addition to displaying physiological information, the patient monitor 10 also may display information related to alarms and monitor settings on the display 18. For example, the display 18 may display alarm limits 30 and 32 for the oxygen saturation 24 and the pulse rate 26, respectively. If an alarm limit 30 or 32 is exceeded, the patient monitor 10 may produce a visible and/or audible alarm. The display 18 also may show an indicator 33 that describes the specific mode to which the alarm limits are set. For example, the indicator 33 is currently showing “NEO” to inform a caretaker that neonatal alarm limits are currently applied, rather than adult alarm limits. The display 18 also may display indicators 34 and 36 that facilitate management of alarms and/or patient physiological parameters. For example, in some embodiments, the patient monitor 10 may employ SatSeconds™ by Nellcor™ to detect alarms and manage nuisance alarms. SatSeconds™ may include activation of an alarm based on limits that may include the integral of time and depth of a desaturation event and may include an indicator 34 that may serve to inform the caregiver that an SpO2 reading has been detected outside of the limit settings.
According to certain embodiments, the SatSeconds™ alarm management feature may analyze SpO2 excursions outside of the alarm limits 30 to differentiate between clinically significant desaturations and minor transient events. For example, SatSeconds™ may enable oxygen saturation alarms only when a SatSeconds™ value, represented by a combination of the magnitude and time of the oxygen saturation excursion, exceeds a certain threshold. In general, the SatSeconds™ value may be the product of the magnitude and duration of an oxygen desaturation event. Accordingly, shallow and/or short desaturation readings that may be measurement noise (e.g., that otherwise may trigger nuisance alarms) may not produce an alarm, allowing caregivers to put brief desaturation events into context with their depth and to put shallow desaturations into context with their duration. In summary, the SatSeconds™ alarm management feature may filter out nuisance alarms to produce a higher ratio of alarms when a clinically significant excursion occurs, as determined by the SatSeconds™ setting. Further, in certain embodiments, other types of alarm management features may be employed instead of, or in addition to, the SatSeconds™ alarm management feature. For example, as discussed further below with respect to
The display 18 also may display a goal indicator 36A, which indicates how well a patient's physiological parameters have been maintained within a certain goal range over a certain time frame. In particular, the goal indicator 36A may include a value 42 that represents the percentage of time that the oxygen saturation, as represented by SpO2 values, has been maintained within goal limits 40. For example, as shown in
As shown in
However, in other embodiments, the goal limits 40 may not correspond to the alarm limits 30. For example, in certain embodiments, the goal limits 40 may be set tighter than the alarm limits 30 to maintain the oxygen saturation within a tighter range than the alarm limits, which in turn, may reduce the number of alarms. Moreover, as discussed further below with respect to
The goal indicator 36A also may include a goal threshold 43 that indicates the minimum percentage of time that the physiological parameter should be maintained within the goal limits 40. According to certain embodiments, the goal threshold 43 may be adjustable by a user through a user interface of the patient monitor 10. As shown in
The goal indicator 36A also may include an excursion indicator 45 that indicates whether the majority of out of goal conditions have been above or below the goal limits 40. For example, as shown in
In general, the selectable inputs 16 may be used to control operating functions of the patient monitor 10. For example, when an alarm is triggered, one of the selectable inputs 16, such as an alarm silence button 44, may be actuated to silence the alarm and display an alarm silence indicator (not shown), such as a slash and a timer, on the display 18. The selectable inputs 16 also may include other fixed function keys, such as arrow keys 48, a contrast selection key 50, and a power key 52. For example, the arrow keys 48 may be actuated to adjust alarm limits, to adjust goal limits, to set the goal threshold, and/or to vary the physiological information shown on the display 18. In another example, the contrast selection key 50 may be actuated to adjust the contrast of the display 18. Further, the fixed function keys may be programmed to control multiple functions or to operate in different manners based upon various factors, such as the duration the key is pressed, the simultaneous activation of other keys, and so forth. For example, an arrow key 48 may be configured to scroll upwards or downwards more rapidly based upon how long the respective key is held down.
The monitor 10 also may include programmable function keys (“soft keys”) 54, and associated soft key icons in the soft key menu 56. Each of the four soft keys 54A, 54B, 54C, and 54D may be pressed to select a corresponding function indicated by the respective soft key icon. For example, the soft key 54A may be pressed to display “LIMITS” information, while the soft key 54B may be pressed to display “TREND” information. In certain embodiments, the soft keys 54 may be programmed to display operating information such as alarm limits, historic trends, setup menus, and alarm volume settings, among others. Moreover, a caregiver may actuate the soft keys 54 to display various operating menus, and then may use the arrow keys 48 to adjust operating parameters. Further, in certain embodiments, a caregiver may navigate through the user interface of the patient monitor 10 using the soft keys 54 and the fixed function keys (e.g., 44 and 48) to adjust alarm limit settings. For example, a caretaker may select the soft key 54A to access a screen for setting goal limits and the goal threshold, as described below with respect to
In addition to the selectable inputs 16, the front panel 12 may include various indicators 58 (e.g., indicator lights) that facilitate operation of the monitor 10. For example, the indicators 58 may include an A/C power indicator, a low battery indicator, an alarm silence indicator, a mode indicator, and so forth. The front panel 12 also includes a speaker 60 for emitting audible indications (e.g., alarms). For example, the speaker 60 may be employed to emit alarms based on the alarm limits 30 and/or the goal threshold 43. In other embodiments, the indicators 58 and/or the speaker 60 may be located on other locations of the patient monitor 10 or on an external device.
The central station 64 may include one or more input devices, such as a touch screen 70, that allow a user to control operations of the monitoring system 62. In other embodiments, the input devices may vary. For example, the input devices may include a keyboard, remote control, or mouse, among others. Through the input devices 70, a user may adjust alarm settings and goal settings for the connected patient monitors 10. A user also may manipulate the input devices 70 to change other setup options for the patient monitors 10 and to view information about the physiological data. For example, a user may manipulate the touch screen 70 to view trend data, alarm limits, goal limits, the goal threshold, or current settings for a patient monitor 10 that is part of the monitoring system 62.
Turning to
Although two light sources are shown in
It should be understood that, as used herein, the term “light” may refer to one or more of ultrasound, radio, microwave, millimeter wave, infrared, visible, ultraviolet, gamma ray or X-ray electromagnetic radiation, and may also include any wavelength within the radio, microwave, infrared, visible, ultraviolet, or X-ray spectra, and that any suitable wavelength of light may be appropriate for use with the present disclosure. In operation, light enters the detector 74 after passing through the tissue of the patient 82. The detector 74 may convert the light at a given intensity, which may be directly related to the absorbance and/or reflectance of light in the tissue of the patient 82, into an electrical signal. That is, when more light at a certain wavelength is absorbed or reflected, less light of that wavelength is typically received from the tissue by the detector 74. For example, the detector 74 may include one or more photodiodes, or any other element capable of converting light into either a current or voltage. After converting the received light to an electrical signal, the detector 74 may send the signal to the monitor 10, where physiological characteristics may be calculated based at least in part on the absorption of light in the tissue of the patient 82.
The sensor 12 also includes the encoder 76, which contains information about the sensor 12, such as the sensor type (e.g., whether the sensor is intended for placement on a forehead, digit, or other body part) and the wavelengths of light emitted by the light sources 78 and 80. The sensor information may allow the monitor 10 to select appropriate algorithms and/or calibration coefficients for calculating the physiological characteristics of the patient 82. According to certain embodiments, the encoder 76 may include a memory on which one or more of the following information may be stored for communication to the monitor 14: the type of the sensor 22; the wavelengths of light emitted by the light sources 78 and 80; and the proper calibration coefficients and/or algorithms to be used for calculating the physiological characteristics of the patient 82.
The sensor 12 further may include a memory 84, such as an EEPROM, flash memory, or other suitable optical, magnetic, or solid-state computer readable media, that stores data related to the goal indicator 36A. For example, the memory 84 may store data representing the goal limits 40, the goal threshold 43 and/or the duration of the goal time frame, as well as data indicating the excursions that have occurred within the time frame. According to certain embodiments, storage of goal indicator data within the sensor 22 may enable the data to be retrieved and downloaded to different monitors 10 connected to the sensor 22. For example, when the patient 82 is moved between rooms, the goal indicator data may be stored on the memory 84 and may be downloaded to the patient monitor 10 in the new room upon connection of the sensor 22 to the new patient monitor 10. As shown in
Signals from the encoder 76 can be transmitted to a detector/decoder 86 in the monitor 10 where the data and signals can be decoded. The detector/decoder 86 may decode the signals from the encoder 76 and may provide the decoded information to a processor 88. According to certain embodiments, the decoded information may represent the type of the sensor 22 and the wavelengths of light emitted by the light sources 78 and 80. The processor 88 may then use the decoded information to determine the proper method for calculating the patient's physiological characteristics. For example, the processor may use the decoded information in conjunction with algorithms or look-up tables to identify the proper calibration coefficients and/or algorithms to be used for calculating the patient's physiological characteristics.
Signals from the detector 74 also may be transmitted to the monitor 10 where the signals can be used to calculate the patient's physiological characteristics. The monitor 10 generally includes the one or more processors 88 connected to an internal bus 90. The bus 90 is also connected to the input components 16 and the display 18, as well as a read-only memory (ROM) 56, a random access memory (RAM) 58, and a nonvolatile storage 96 (such as a magnetic or solid state hard drive or memory, optical disk, or any other suitable optical, magnetic, or solid-state computer readable media) that stores longer-term data.
A time processing unit (TPU) 98 may provide timing control signals to a light drive circuitry 100, which controls when the emitter 72 is illuminated and the multiplexed timing for the light sources 78 and 80. The TPU 98 also may control the gating-in of signals from detector 74 through a switching circuit 102. These signals may be sampled at the proper time, depending upon which light source 78 or 80 is illuminated. The received signal from the detector 74 may be passed through an amplifier 104, a low pass filter 106, and an analog-to-digital converter 108 for amplifying, filtering, and digitizing the electrical signals the from the sensor 22. The digital data may then be stored in a queued serial module (QSM) 110 for later downloading to the RAM 94 as the QSM 110 fills up. In certain embodiments, there may be multiple separate parallel paths having the amplifier 104, the filter 106, and the A/D converter 108 for multiple light wavelengths or spectra received.
The processor 88 may use the digital data, as well as other signals from the detector 74 to calculate and/or determine physiological characteristics, such as oxygen saturation, pulse rate, and total hemoglobin, among others. For example, the processor 88 may use various encoded instructions, algorithms, and/or lookup tables that may be stored in the ROM 92, as well as in the nonvolatile storage 96, to calculate the physiological characteristics based at least in part upon the signals that correspond to the light received by the detector 74. According to certain embodiments, code encoding executable algorithms may be stored in the ROM 92 or the nonvolatile storage 96 and accessed and operated according to processor instructions. The calculated physiological characteristic may then be displayed on the display 18 for a caregiver to monitor or review. The processor 88 also may access and execute coded instructions for determining the goal value 42 and for displaying the goal indicator 36A. According to certain embodiments, one or more algorithms and/or lookup tables may be stored in the ROM 92 or the nonvolatile storage 96 and employed by the processor 88 to calculate the goal value 42 and to determine whether alarm conditions related to the goal value 42 have occurred.
The waveform 114 includes three desaturation events 120, 122, and 124 where the oxygen saturation was below the lower goal limit 40. Further, the waveform 114 includes one oversaturation event 126 where the oxygen saturation was above the upper goal limit 40. Each of the events 120, 122, 124, and 126 has a corresponding time period 128, 130, 132, and 134 that indicates the length of the respective event 120, 122, 124, or 126. Accordingly, the total time that the oxygen saturation was outside of the goal limits 40 may be calculated by summing the time periods 128, 130, 132, and 134. The total time of the events 120, 122, 124, and 126 can then be subtracted from the goal time frame 136 to determine the total time that the oxygen saturation was within the goal limits 40. Finally, the total time that the oxygen saturation was within the goal limits 40 can be divided by the goal time frame 136 to determine the value 42, which indicates the percentage of time that the oxygen saturation was within the goal limits 40.
The processor 88 may then identify (block 144) excursion events where the physiological parameter is outside of the goal limits. In general, the processor 88 may execute encoded instructions to evaluate the physiological data obtained within the goal time frame to identify events where the data is above and/or below the goal limits. For example, as shown in
After identifying (block 144) the excursion events, the processor 88 may calculate (block 146) the percentage of time that the physiological parameter was within the goal limits. For example, the processor 88 may subtract the total duration of the excursion events from the goal time frame to determine the total amount of time that the physiological parameter was within the goal limits. The processor 88 may then divide the total amount of time within goal by the goal time frame to determine the percentage of time that the parameter was within the goal limits. According to certain embodiments, the processor 80 may execute encoded instructions stored within the ROM 92 or the nonvolatile storage 96 to calculate the percentage of time that the physiological parameter was within the goal limits.
The patient monitor 10 may then display (block 148) the percentage on the display 18. For example, as shown in
The processor 88 also may determine (block 150) whether any alarms should be produced based on the percentage indicated by the value 42. For example, as shown in
After determining (block 150) whether alarms should be produced, the processor 88 may again identify (block 144) excursion events. For example, the processor 88 may evaluate the physiological data that has been received since the last update to the goal indicator to determine whether there are new excursion events. The method 138 may be repeated continuously or at set intervals to update the display of the goal indicator as new physiological data is received.
According to certain embodiments, the region fill color and/or pattern also may change depending on which regions 151, 152, and/or 153 are filled. For example, when the oxygen saturation has been within the goal limits 40 for 0 to 50% of the time, the region 151 may be filled with a red color. When the oxygen saturation has been within the goal limits 40 for 51 to 79% of the time, the regions 151 and 152 may be filled with a yellow color. Further, when the oxygen saturation has been within the goal limits 40 for 80 to 100% of the time, the regions 151, 152, and 153 may be filled with a green color. Accordingly, the indicator 36C may use both fill level and color to indicate the percentage of time that the physiological parameter has been within the goal limits 40. As shown in
As shown in
The screen 160 further includes a waveform 162 that represents a patient's SpO2 values over time. According to certain embodiments, the waveform 162 may be a real-time trend of the patient's SpO2 values. A label 164 may be displayed near the waveform 162 to identify the time frame for the trend, shown here as a rolling 24-hour period. According to certain embodiments, the time frame shown by the label 164 also may correspond to the goal time frame used by the patient monitor 10 to calculate the value 42 for the goal indicator 36A. In these embodiments, the waveform 162 may provide a real-time trend view of the data used by the patient monitor 10 to calculate the value 42. Another label 166 also may be displayed near the waveform 162 to identify the physiological parameter that is shown by the trend.
Sections 172 are demarcated on the waveform 162 to indicate excursion events. As shown by the sections 172, the majority of the excursion events have been above the upper goal limit 40, and accordingly the excursion indicator 45 shows an up arrow. Further, in certain embodiments, the sections 172 may have different colors or fill patterns depending on whether the sections 172 identify excursions that are above or below the goal limits. For example, in certain embodiments, the sections 172a and 172c, which identify excursions that are above the upper goal limit, may be one color while the section 172b, which identifies an excursion that is below the lower goal limit, may be another color.
While
The screen 176 includes the goal indicator 36A, which shows the value 42 that indicates the percentage of time that the oxygen saturation was within the goal limits 40 over the trend period. The value 42 may be calculated as described above with respect to blocks 140-148 of
The settings 196, 198, and 200 may be adjusted through the user interface of the patient monitor 10, for example, using the soft keys 54 and the arrow keys 48. Further, in other embodiments, the screen 188 may be shown on the central station 64, and input devices for the central station, such as the touch screen 70, may be employed to adjust the settings 196. The processor 88 may then store the adjusted settings 196, 198, and 200 within the ROM 92, the nonvolatile storage 96, and/or the memory 84 for use during operation of the monitor 10.
As may be appreciated, the goal indicators described herein with respect to
Claims
1. A patient monitor, comprising:
- a medical device interface suitable for operable connection to a sensor;
- a display configured to display patient physiological data based on input received from the sensor and configured to display a goal indicator indicative of a percentage of time that the physiological data was within predetermined goal limits during a goal time frame; and
- a processor configured to analyze the patient physiological data to determine the percentage of time that the patient physiological data was within the predetermined goal limits over the goal time frame, to compare the percentage of time to a goal threshold for a minimum percentage of time that the physiological data was within the predetermined goal limits during the goal time frame, to trigger a goal alarm based on the comparison if the percentage of time is below the goal threshold, and to cause the display to display the patient physiological data and the goal indicator.
2. The patient monitor of claim 1, wherein the patient physiological data comprises SpO2 data or pulse rate data.
3. The patient monitor of claim 1, wherein the goal indicator comprises a graphical symbol representing which physiological parameter is analyzed over the goal time frame.
4. The patient monitor of claim 3, wherein the physiological parameter comprises a pulse rate, and wherein the graphical symbol comprises a heart symbol.
5. The patient monitor of claim 1, wherein the goal indicator comprises a fill level representing the percentage of time that the physiological data was within the predetermined goal limits.
6. The patient monitor of claim 1, wherein the goal indicator comprises a numerical value that indicates the percentage of time that the physiological data was within the predetermined goal limits during the goal time frame.
7. The patient monitor of claim 1, wherein the processor is configured to analyze the patient physiological data to identify excursion events where the patient physiological data is outside of the predetermined goal limits and to determine the percentage of time that the physiological data was within predetermined goal limits during the goal time frame based at least in part upon a summation of a duration for each identified excursion event.
8. The patient monitor of claim 7, wherein the processor is configured to determine whether the majority of the excursion events are above or below the predetermined goal limits, and wherein the goal indicator comprises a non-numerical graphical indicator that indicates whether the majority of the excursion events during the goal time frame were above or below the predetermined goal limits.
9. A patient monitor, comprising:
- a medical device interface suitable for operable connection to a sensor;
- a display configured to display a physiological parameter based on input received from the sensor and configured to display a goal indicator indicative of a percentage of time that the physiological parameter was within predetermined goal limits during a goal time frame, wherein the goal indicator comprises a bar graph comprising: a first region corresponding to percentages of time between a first percentage and a second percentage; a second region corresponding to percentages of time between the second percentage and a third percentage; and a third region corresponding to percentages of time between the third percentage and a fourth percentage; and
- a processor configured to: analyze the physiological parameter to determine the percentage of time that the physiological parameter was within the predetermined goal limits during the goal time frame; cause the display to display the physiological parameter and the goal indicator; determine whether the percentage of time corresponds to the first region, the second region, or the third region; and cause the display to fill at least one of the first region, the second region, or the third region based the determination.
10. The patient monitor of claim 9, wherein the processor is configured to cause the display to fill the first region with a first color based on a determination that the percentage of time corresponds to the first region.
11. The patient monitor of claim 10, wherein the processor is configured to cause the display to fill the first region and the second region with a second color based on a determination that the percentage of time corresponds to the second region.
12. The patient monitor of claim 9, wherein the second percentage is greater than the first percentage, the third percentage is greater than the second percentage, and the fourth percentage is greater than the third percentage.
13. The patient monitor of claim 9, wherein the physiological parameter comprises oxygen saturation.
14. The patient monitor of claim 9, wherein the predetermined goal limits comprise an upper limit, or a lower limit, or a combination thereof.
15. The patient monitor of claim 9, wherein the processor is configured to compare the percentage of time to a goal threshold for a minimum percentage of time that the physiological parameter was within the predetermined goal limits during the goal time frame and to trigger a goal alarm based on the comparison if the percentage of time is below the goal threshold.
16. A method, comprising:
- determining, via a patient monitor, a physiological parameter based on data received from a physiological sensor;
- comparing, via the patient monitor, the physiological parameter to one or more goal limits to identify excursion events where the physiological parameter is outside of the one or more goal limits;
- calculating, via the patient monitor, based on the excursion events and a goal time frame, a percentage of time that the physiological parameter was within the goal limits;
- providing, via the patient monitor, a goal alarm indication based at least in part on a determination that the percentage of time that the physiological parameter was within the goal limits over the goal time frame is less than a goal threshold; and
- displaying the percentage of time on a patient monitor.
17. The method of claim 16, comprising:
- comparing, via the patient monitor, the physiological parameter to one or more alarm limits; and
- providing, via the patient monitor, an alarm indication based at least in part on a determination that the physiological parameter violates at least one of the one or more alarm limits;
- wherein the goal alarm indication is provided independently of the alarm indication.
18. The method of claim 17, wherein the one or more goal limits comprise a lower goal limit and an upper goal limit and the one or more alarm limits comprise a lower alarm limit and an upper alarm limit, and wherein the lower goal limit is greater than the lower alarm limit and the upper goal limit is less than the upper alarm limit.
19. The method of claim 16, wherein comparing the physiological parameter to one or more goal limits comprises determining whether the physiological parameter is greater than an upper goal limit and determining whether the physiological parameter is less than a lower goal limit.
20. The method of claim 16, comprising displaying a graphical indicator indicative of the percentage of time on the patient monitor.
Type: Application
Filed: Sep 18, 2014
Publication Date: Jan 1, 2015
Inventor: Randall E. Muir (Golden, CO)
Application Number: 14/490,282
International Classification: A61B 5/00 (20060101); A61B 5/024 (20060101); A61B 5/1455 (20060101);