Pressure ulcer management system, pressure ulcer management method, and computer program

Abstract

This system provides a pressure ulcer management system that reduces the burden on evaluators while enabling objective measurement free from subjectivity and consistent evaluation records. [Solution] The pressure ulcer management device 1 for managing pressure ulcers in patients comprises an acquisition unit 13 for acquiring images of pressure ulcers, a measurement unit 14 for measuring the size of the pressure ulcer based on the acquired images, a reception unit 15 for receiving input of multiple evaluation items for evaluating the condition of the pressure ulcer, a determination unit 16 for deriving evaluation values ​​for at least one of the multiple evaluation items related to size based on the measurement results of the pressure ulcer, and a warning unit 17 for issuing a warning if at least one combination of the input content and evaluation values ​​related to the multiple evaluation items satisfies a predefined contradiction condition.

Description

Technical Field

[0001] The present invention relates to a technique for managing pressure ulcers in patients.

Background Art

[0002] Conventionally, in the follow-up observation of pressure ulcers, a management system for recording the area, depth of the affected area, presence or absence of pockets, etc. has been proposed (see, for example, Patent Document 1).

[0003] For example, in the technique disclosed in Patent Document 1, a technique for extracting and measuring necrotic tissue and granulation tissue based on color information from an image of a pressure ulcer site taken with a digital camera is disclosed. This makes it possible to support quantitative evaluation compared to conventional manual measurement.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the following problems remain in the conventional pressure ulcer management system.

[0006] First, there is a lack of measurement objectivity and a workload. Measuring the area and size of pockets of pressure ulcers and the recording work require a great deal of effort from evaluators (such as nurses and doctors). Also, even when using image analysis, there is room for the subjectivity of the evaluator to intervene in specifying the analysis range and judging the boundary, and it has been difficult to completely ensure the objectivity of the recording.

[0007] Secondly, there is the risk of inconsistencies in assessment and errors in recording. Inputting indicators to evaluate the state of pressure ulcers relies heavily on the evaluator's subjectivity and knowledge level. As a result, the risk of logical inconsistencies in the selected combination of assessment items, or errors during transcription or input, cannot be eliminated, hindering the determination of appropriate treatment plans.

[0008] The present invention has been made in view of the above points, and aims to provide a pressure ulcer management system, a pressure ulcer management method, and a computer program that reduce the burden on evaluators while enabling objective measurement free from subjectivity and consistent evaluation records. [Means for solving the problem]

[0009] One aspect of the present invention is, A pressure ulcer management system for managing pressure ulcers in patients, The acquisition unit acquires images of the aforementioned pressure ulcers, A measuring unit that measures the size of the pressure ulcer based on the acquired image, A reception unit that receives input for multiple evaluation items for evaluating the condition of the pressure ulcer, A determination unit that derives evaluation values ​​for at least the size-related items among the multiple evaluation items based on the measurement results of the pressure ulcer, A warning unit that issues a warning if at least one combination of the input content and evaluation value related to the aforementioned multiple evaluation items satisfies a predefined inconsistency condition, We provide a pressure ulcer management system equipped with [the following features].

[0010] In one aspect of the present invention, an image of a pressure ulcer is acquired, the size of the pressure ulcer is measured from the acquired image, input of multiple evaluation items for evaluating the condition of the pressure ulcer is accepted, evaluation values ​​for at least the size-related items among the multiple evaluation items are derived from the measurement results of the pressure ulcer, and a warning is issued if any combination of the input content and evaluation values ​​related to the multiple evaluation items satisfies a predefined inconsistency condition. According to this aspect of the present invention, when an evaluator assesses the condition of a pressure ulcer, if there is a discrepancy between the input content of the evaluation items and the evaluation value, a warning indicating that the evaluation is inconsistent is immediately issued. This reduces the burden on the evaluator and enables objective measurement free from subjectivity and consistent evaluation records.

[0011] Although this invention falls under the category of a system, methods and computer programs can also achieve similar functions and effects specific to their respective categories. [Effects of the Invention]

[0012] According to the present invention, objective measurement free from subjectivity and consistent evaluation records are made possible while reducing the burden on evaluators. [Brief explanation of the drawing]

[0013] [Figure 1] This diagram shows an overview of the pressure ulcer management system. [Figure 2] This is a functional block diagram of a pressure ulcer management device. [Figure 3] This is an explanatory diagram illustrating the procedure for inputting pressure ulcer images into the pressure ulcer management system. [Figure 4] This is an explanatory diagram for describing the measurement of pressure ulcer size in the pressure ulcer management system. [Figure 5] This is an explanatory diagram illustrating the input screen for evaluation items in the pressure ulcer management system. [Figure 6] This is an explanatory diagram for describing the checklist of the pressure ulcer management system. [Figure 7] This is a flowchart showing the flow of pressure ulcer management using a pressure ulcer management device. [Modes for carrying out the invention]

[0014] Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the attached drawings. In the following drawings, the same elements are denoted by the same numbers or reference numerals throughout the description of the embodiments.

[0015] [Overview of Pressure Ulcer Management System] The pressure ulcer management system of this embodiment is, for example, a system for managing patients' pressure ulcers in a hospital. As shown in FIG. 1, the pressure ulcer management system has a pressure ulcer management device 1 provided in the hospital or the like as a management computer available to evaluators as a main component, and realizes by communicably connecting an input / output terminal 2 operable by medical staff such as nurses and doctors. Note that the pressure ulcer management device 1 may be an external server connectable via a network such as a public line or Wi-Fi (Wireless Fidelity). Each computer includes, as internal devices, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an internal storage device, etc., and includes, as peripheral devices, a keyboard, a mouse, a microphone, a display, a printer, a speaker, a camera, an external storage device, a network card, etc.

[0016] [Functional Configuration of Pressure Ulcer Management System] As shown in FIG. 2, the pressure ulcer management device 1 includes a communication unit 10, an input unit 11, an output unit 12, an acquisition unit 13, a measurement unit 14, a reception unit 15, a determination unit 16, a warning unit 17, a management unit 18, and a storage unit 19 as components that function the device by a computer executing a predetermined program. Note that since the input / output terminal 2 has the same functions as a general communication terminal having a camera function such as a smartphone or a tablet, a detailed description thereof will be omitted.

[0017] The communication unit 10 is composed of, for example, a network card or the like, and transmits and receives various information to and from the input / output terminal 2.

[0018] The input unit 11 consists of, for example, a keyboard, mouse, and microphone, and accepts text input in response to the evaluator's actions, as well as operation commands related to input operations such as selection operations. The input / output terminal 2 also accepts text and operation commands in response to the evaluator's actions and functions in cooperation with the pressure ulcer management device 1, similar to the input unit 11.

[0019] The output unit 12 consists of, for example, a display, printer, and speaker, and outputs various information in conjunction with the execution of the pressure ulcer management process described later. The output information includes images of pressure ulcers, a screen for measuring the size of pressure ulcers, and a screen for inputting evaluation items. The input / output terminal 2 also functions in the same way as the output unit 12 by cooperating with the pressure ulcer management device 1.

[0020] The acquisition unit 13 is composed of, for example, a CPU, and acquires images of pressure ulcers captured by the camera of the input / output terminal 2 via the communication unit 10. When photographing pressure ulcers using the input / output terminal 2, a length measuring tool such as a ruler or measuring tape is also photographed at the same time as the pressure ulcer to provide a reference for its size. As a result, the acquisition unit 13 acquires an image that captures both the pressure ulcer and the length measuring tool simultaneously.

[0021] The measurement unit 14 is composed of, for example, a CPU, and measures the size of the pressure ulcer based on the image of the pressure ulcer acquired by the acquisition unit 13. Specifically, the measurement unit 14 calculates the size (area) of the pressure ulcer from the image of the pressure ulcer through image recognition processing, and also uses the dimensions of a length measuring tool captured within the image of the pressure ulcer as a reference to identify the circumference of the pressure ulcer specified by the evaluator on the image, or the diameter, major axis length, and minor axis length if the pressure ulcer is approximately considered as a circle or ellipse, and calculates the area of ​​the pressure ulcer by performing predetermined calculation processing using the identified lengths. The size (area) of a pressure ulcer includes the pressure ulcer exposure area, which shows the extent of the pressure ulcer (wound) exposed on the skin surface, and the pocket area, which shows the extent of the space (pocket) that is dug into the subcutaneous tissue and is not visible from the skin surface. The measurement unit 14 determines the length by tracing the circumference or diameter, or the major and minor axes of pressure ulcers or pockets in the image, after the evaluator has specified the dimensional standards, and calculates the pressure ulcer exposure area and pocket area based on the determined length. In this embodiment, the measurement unit 14 roughly calculates both the pressure ulcer exposure area and pocket area through image recognition processing, as well as through the evaluator's objective visual inspection. However, it is also possible to calculate only one of the pressure ulcer exposure area or pocket area. Furthermore, for example, the image recognition processing may be omitted and the calculation may be performed solely by the evaluator's visual inspection, or the calculation based on the evaluator's visual inspection may be omitted and the calculation may be performed solely by image recognition processing.

[0022] The reception unit 15 is composed of, for example, a CPU, and accepts input of multiple evaluation items for assessing the condition of a pressure ulcer in response to input operations by the evaluator in the input unit 11 or the input / output terminal 2. The evaluation items are those that are objectively judged by the evaluator through visual inspection, such as depth (D), exudate (E), size (S), inflammation / infection (I), granulation tissue (G), necrotic tissue (N), and pocket (P). The evaluation items are entered by presenting options indicating the degree of each item in a pull-down list, and the evaluator selects the desired option.

[0023] The judgment unit 16, for example, is composed of a CPU, and derives evaluation values ​​for at least the size-related items from among several evaluation items based on the measurement results of the pressure ulcer (pressure ulcer exposed area, pocket area). For example, the evaluation value for size (S) is defined to be selectable from s0 to s6 corresponding to the pressure ulcer exposed area, and the evaluation value for pocket (P) is defined to be selectable from p0 to p6 corresponding to the pocket area. The judgment unit 16 automatically selects the evaluation values ​​for size (S) and pocket (P) according to predetermined evaluation criteria from the measurement results of the pressure ulcer. In addition, the judgment unit 16 allows evaluators to arbitrarily select the evaluation values ​​for size (S) and pocket (P) when inputting evaluation items, but if the predetermined evaluation criteria are not met or if the item falls under the checklist described later, it will provide a recommendation message to the effect that the evaluator should select an appropriate evaluation value option. This recommendation will be described later with reference to Figure 5.

[0024] The warning unit 17 is composed of, for example, a CPU, and displays a warning if at least one combination of input content and evaluation values ​​related to the above-mentioned multiple evaluation items (for example, (D), (E), (S), (I), (G), (N), (P)) satisfies the contradiction conditions defined in the checklist described later. Specifically, the warning unit 17 compares the contents of each evaluation item with the checklist, and if a contradictory combination of evaluation items is selected, it displays a warning message indicating this and prompting the evaluator to re-select. This warning display will be described later with reference to Figure 5.

[0025] The management unit 18, for example, is composed of a CPU, and manages patient identification information (patient ID), images of pressure ulcers, and input content for each evaluation item by associating them with each other in a patient management database. The patient management database is built in the storage unit 19.

[0026] The memory unit 19 is composed of, for example, an external storage device and stores programs and information necessary for basic information processing, as well as programs for the computer to execute the pressure ulcer management process described later, and checklists and patient management databases described later. The computer executes each step of the pressure ulcer management process by reading the programs related to the pressure ulcer management process from the memory unit 19.

[0027] The functions of the pressure ulcer management device 1 described above are implemented by executing predetermined programs stored in the memory unit 19. However, instead, these functions may be implemented by using a SaaS (Software as a Service) mechanism, for example, by downloading the necessary programs from an external server to the input / output terminal 2 when needed. Furthermore, the processing of the judgment unit 16 and the warning unit 17 may be delegated to an external generating AI (Artificial Intelligence) and implemented online.

[0028] [Procedure for inputting pressure ulcer images] As shown in Figure 3, the procedure for inputting pressure ulcer images follows the steps outlined below.

[0029] First, the medical professional uses the camera on input / output terminal 2 to read the patient ID from the patient's wristband.

[0030] Next, the medical professional places a ruler, for example, as a reference length measuring tool, right next to the pressure ulcer (affected area), and takes a picture with the camera of input / output terminal 2 so that both the pressure ulcer and the ruler are within the frame.

[0031] After the image is taken, the pressure ulcer image is transmitted from the input / output terminal 2 to the pressure ulcer management device 1, for example, via the hospital's wireless LAN. Based on the patient ID read, the pressure ulcer image is saved in a corresponding patient photo-dedicated folder provided in the storage unit 19.

[0032] In the pressure ulcer management device 1, the measurement unit 14 automatically calculates the pressure ulcer exposed area and pocket area based on a ruler within the pressure ulcer image using image recognition processing. In the image recognition processing, the actual dimensions of each part of the pressure ulcer are calculated from the number of pixels in the image. In addition, to complement the automatically calculated area, the measurement unit 14 identifies the length of each part of the pressure ulcer specified by the evaluator on the pressure ulcer image and performs predetermined calculation processing to calculate the pressure ulcer exposed area and pocket area that correspond to objective visual inspection.

[0033] Subsequently, in the pressure ulcer management device 1, the judgment unit 16 automatically derives evaluation values ​​for the size (S) and pocket (P) of the pressure ulcer based on the measurement results from the measurement unit 14, and the reception unit 15 receives data entered (specified) by the evaluator for other evaluation items (depth (D), exudate (E), inflammation / infection (I), granulation tissue (G), necrotic tissue (N), etc.).

[0034] At that time, the warning unit 17 checks for inconsistencies in the entered combinations using a checklist. If there are no problems, the management unit 18 saves the entered data linked to the patient ID to the patient management database in the storage unit 19.

[0035] This pressure ulcer image input procedure allows for objective numerical measurement of pressure ulcer size, which previously relied on the evaluator's subjective judgment, and also prevents input errors and inconsistencies on the spot.

[0036] [Measurement of pressure ulcer size] As shown in Figure 4, on the screen of the pressure ulcer management device 1, the measurement unit 14 calculates the pressure ulcer exposed area and pocket area by having the evaluator roughly specify and trace the short axis and long axis of the pressure ulcer or pocket. In this case, the pressure ulcer exposed area and pocket area can also be calculated if the evaluator traces the outer circumference of the pressure ulcer or pocket. The dimensions can be specified using a ruler that can be simultaneously viewed on the screen. Once the pressure ulcer exposed area and pocket area are calculated, the evaluation values ​​for size (S) and pocket (P), which are evaluation items, are automatically derived based on these values. For example, if the pressure ulcer exposed area is 4cm*2, the evaluation value will be s3, and if it is 12cm*2, the evaluation value will be s6.

[0037] This method of measuring pressure ulcer size relies on precise measurements using a ruler rather than the evaluator's estimation, ensuring objectivity and generally consistent results regardless of who takes the measurement. Furthermore, the system calculates the pressure ulcer exposure area and pocket area simply by specifying them on the screen, reducing the evaluator's workload. Moreover, it can automatically integrate with the input of evaluation items, going beyond simple area measurement.

[0038] [Evaluation item input screen] In addition to the captured images of the pressure ulcer, the pressure ulcer exposure area and pocket area calculated by the measurement unit 14 are displayed outside the diagram. Simultaneously, on the pressure ulcer progress record evaluation item input screen shown in Figure 5, the size (S) and pocket (P) evaluation items are automatically selected based on the patient ID, onset date, recording date, etc., and the numerical values ​​of the pressure ulcer exposure area and pocket area. However, the evaluator can also arbitrarily select and specify appropriate evaluation values ​​for size (S) and pocket (P) from a pull-down list.

[0039] Furthermore, the evaluation item input screen also displays input slots for other evaluation items (depth (D), exudate (E), inflammation / infection (I), granulation tissue (G), necrotic tissue (N)), allowing evaluators to arbitrarily select and input evaluation values. For these evaluation items as well, evaluators can arbitrarily select and specify appropriate evaluation values ​​from pull-down lists.

[0040] When an evaluator specifies an evaluation value for each evaluation item on the evaluation item input screen, if the judgment unit 16 or warning unit 17 determines, through comparison with the checklist, that a medically impossible and contradictory combination of evaluation items is immediately displayed near the corresponding input slot or elsewhere.

[0041] For example, consider a case where, on the evaluation item input screen, the evaluation value for pocket (P) is p6 (less than 4cm*2), and at the same time, the evaluation value for depth (D) is specified as d1 (persistent redness = no peeling skin). In this case, it is medically impossible for a pocket (p6) to exist while the skin is not peeling (d1), and this can be verified using a predefined checklist for such combinations. Therefore, a recommendation message such as "Is there really a pocket? If there is a pocket, please reconsider the 'depth'." is displayed near the input slot for pocket (P). Additionally, a warning message such as "There is a contradiction in the combination of selected items. The selections need to be reviewed. d1 is persistent 'redness'. If there is exudate, please reconsider d." is displayed below the input slot.

[0042] Using an evaluation item input screen that displays recommendations and warnings like this allows for immediate filtering of input errors due to the evaluator's knowledge level or subjective bias, thereby improving the accuracy of the recording. Furthermore, the display of recommendations and warnings prompts evaluators to reconsider why certain combinations are incorrect, leading to educational benefits and the standardization of evaluation skills.

[0043] [Checklist] As shown in Figure 6, the checklist pre-defines patterns of combinations where the evaluation values ​​for each input item are not medically consistent, as well as the content of the warning messages and recommendation messages to be displayed in those cases.

[0044] For example, suppose the first selection item and its content is depth (D) d1: persistent redness, and the second selection item and its content is exudate (E) e3: moderate amount. From a medical standpoint, if the depth (D) is d1, then the exudate should be e0 (none). In other words, in this case, the evaluation of exudate as d1 constitutes a contradiction. Therefore, when depth (D) is d1 and exudate (E) is e3, a warning message or recommendation message will be displayed, as specified in the first line of the checklist, such as "d1 is persistent 'redness'. There is no exudate. If there is exudate, please review d." In addition to this, the checklist specifies contradictory combinations of evaluation values ​​for each evaluation item and corresponding warning messages and recommendation messages, defining numerous contradictory rules based on medical evidence. Types of warnings and recommendations include pointing out that an option is unavailable, asking questions such as "Isn't it...?", and providing information by giving specific examples of evaluation values.

[0045] The assessment of pressure ulcers involves many items, and human judgment is prone to errors due to lack of knowledge or incorrect data entry. However, using a checklist functions as a kind of digital expert's wisdom, and by comparing the data entered during the assessment with the checklist, accurate and consistent data recording can be ensured regardless of the level of knowledge on site.

[0046] [Pressure ulcer management and treatment] As shown in Figure 7, the pressure ulcer management device 1 performs pressure ulcer management processing in the following steps.

[0047] First, the acquisition unit 13 acquires images of the pressure ulcers taken from the input / output terminal 2 and records them in the storage unit 19 (S11).

[0048] Next, the measurement unit 14 measures the size of the pressure ulcer (exposed pressure ulcer area, pocket area) from the image acquired by the acquisition unit 13 and records the measurement results in the storage unit 19 (S12). At this time, the measurement results are calculated by the evaluator specifying each part of the pressure ulcer in the image to determine the exposed pressure ulcer area and pocket area.

[0049] Next, the determination unit 16 determines the evaluation values ​​for the size (S) and pocket (P) of the pressure ulcer based on the measurement results from the measurement unit 14 (S13).

[0050] Next, the reception unit 15 accepts input of evaluation values ​​for evaluation items other than size (S) and pockets (P) (S14).

[0051] Next, the determination unit 16 compares the input evaluation values ​​with a checklist to determine if there are any inconsistencies between the combinations of evaluation values ​​for each evaluation item (S15).

[0052] The determination unit 16 then determines whether a contradictory combination has been selected (S16). If a contradictory combination is selected (S16: YES), the process in S17 is executed. On the other hand, if no contradictory combination is selected (S16: NO), the process proceeds to S19 and is executed.

[0053] In S17, the warning unit 17 displays a warning message or recommendation message on the evaluation item input screen indicating that a combination inconsistent with the entered evaluation values ​​has been selected (S17). This prompts the evaluator who sees the message to reconsider the evaluation values ​​for each evaluation item they have entered.

[0054] Next, the reception unit 15 accepts re-entry of evaluation values ​​for each evaluation item, including size (S) and pockets (P) (S18). If no particularly contradictory combinations are selected, the evaluation values ​​for each entered evaluation item are finalized. If contradictory combinations are selected even after re-entry, a warning message or recommendation message is displayed to that effect.

[0055] Next, the management unit 18 associates the patient information (patient ID) and the evaluation item content (evaluation value) entered in the pressure ulcer image, and records it in the patient management database of the storage unit 19 (S19).

[0056] [Effectiveness of pressure ulcer management systems] According to this embodiment of the pressure ulcer management system, by using pressure ulcer images and length measuring tools such as rulers as references, evaluators can objectively and quantitatively measure and accurately record the exposed area of ​​pressure ulcers and the area of ​​pockets, significantly reducing the effort required of evaluators for measurement.

[0057] Furthermore, according to the pressure ulcer management system of this embodiment, the evaluation of evaluation items such as size (S) and pocket (P) is semi-automated based on objective area data measured from pressure ulcer images, thereby eliminating the burden on evaluators and their subjectivity.

[0058] Furthermore, according to the pressure ulcer management system of this embodiment, recommendations and warnings are automatically provided for inappropriate combinations of selections based on a checklist that defines contradictory conditions between evaluation items. Therefore, regardless of the evaluator's knowledge level, the accuracy and consistency of evaluation records can be improved.

[0059] Furthermore, since the system automatically derives or recommends evaluation values ​​(such as size (S) judgment and pocket (P) judgment) from the measured area and other numerical values, it reduces variability in judgment by evaluators, enabling objective and consistent evaluations. This eliminates the need for evaluators to manually check standard rules, significantly reducing work time.

[0060] Furthermore, the system automatically detects and warns of medically impossible combinations of evaluation items, preventing inconsistencies and input errors in records regardless of the evaluator's knowledge level, thereby increasing the reliability of the recorded data.

[0061] Furthermore, by using measuring tools (such as rulers) visible within the pressure ulcer image as a reference to calculate the exposed area of ​​the pressure ulcer and the pocket area, it becomes possible to obtain accurate quantitative data rather than estimations. Since the area is calculated simply by the evaluator specifying each part of the pressure ulcer on the image, it eliminates the problems of errors and effort associated with manual calculations, even for pressure ulcers with complex shapes.

[0062] Furthermore, by linking patient information, pressure ulcer images, and detailed evaluation data as a single set and managing them in a patient management database, it becomes possible to prevent data mix-ups between patients, facilitate accurate chronological monitoring of progress, and enable quick and accurate evaluation of the effectiveness of treatment plans.

[0063] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above. Furthermore, the effects described in the embodiments of the present invention are merely a list of the most preferred effects arising from the present invention, and the effects of the present invention are not limited to those described in the embodiments of the present invention.

[0064] For example, while the above embodiment is suitable for the management of pressure ulcers, it can be applied not only to pressure ulcers but also to other conditions such as stomas and wounds, and can be widely used in outpatient settings, hospital wards, and community healthcare. [Explanation of Symbols]

[0065] 1 Pressure ulcer management device 10 Communications Department 11 Input section 12 Output section 13 Acquisition Department 14 Measurement Unit 15 Reception Department 16 Judgment section 17 Warning part 18 Management Department 19 Memory section 2 Input / Output Terminals

Claims

1. A pressure ulcer management system for managing pressure ulcers in patients, The acquisition unit acquires images of the aforementioned pressure ulcers, A measuring unit that measures the size of the pressure ulcer based on the acquired image, A reception unit that receives input for multiple evaluation items for evaluating the condition of the pressure ulcer, A determination unit that derives evaluation values ​​for at least the size-related items among the multiple evaluation items based on the measurement results of the pressure ulcer, A warning unit that issues a warning if at least one combination of the input content and evaluation value related to the aforementioned multiple evaluation items satisfies a predefined inconsistency condition, A pressure ulcer management system equipped with [features / equipment].

2. The pressure ulcer management system according to claim 1, wherein the determination unit automatically selects the evaluation value according to predetermined evaluation criteria based on the measurement results of the pressure ulcer, or suggests options when inputting the evaluation items.

3. The system further includes a storage unit that stores a checklist defining contradictory combinations of the aforementioned multiple evaluation items, The pressure ulcer management system according to claim 1, wherein the warning unit compares the contents of the checklist with the contents of each evaluation item and issues a warning when a contradictory combination is selected.

4. The acquisition unit acquires the image capturing the pressure ulcer along with the length measuring device. The pressure ulcer management system according to claim 1, wherein the measuring unit determines the length of a specified range on the image based on the dimensions of the length measuring tool in the image, and calculates the area of ​​the pressure ulcer based on the determined length.

5. The pressure ulcer management system according to claim 1, further comprising a management unit that manages the patient identification information, the images, and the input content of each evaluation item in relation to each other.

6. A method for managing pressure ulcers in patients using a computer, The steps include obtaining an image of the pressure ulcer, Based on the acquired image, the step of measuring the size of the pressure ulcer, A step of receiving input for multiple evaluation items for evaluating the condition of the pressure ulcer, Based on the measurement results of the pressure ulcer, the step of deriving evaluation values ​​for at least the size-related items among the multiple evaluation items, A step of issuing a warning if at least one combination of the input content and evaluation values ​​related to the aforementioned multiple evaluation items satisfies a predefined inconsistency condition, A pressure ulcer management method that includes [the following].

7. A computer in a pressure ulcer management system for managing patients' pressure ulcers, Steps to obtain images of the pressure ulcer, A step of measuring the size of the pressure ulcer based on the acquired image, A step of receiving input for multiple evaluation items for evaluating the condition of the pressure ulcer, A step of deriving evaluation values ​​for at least the size-related items among the multiple evaluation items based on the measurement results of the pressure ulcer, A step of issuing a warning if at least one combination of the input content and evaluation value related to the aforementioned multiple evaluation items satisfies a predefined inconsistency condition. A computer-readable computer program for executing a program.

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