Abstract: Tissue force displacement data can be used to evaluate the suitability of a subject for an apnea therapy, such as therapy with an implanted magnet. A method of evaluating a suitability of a subject for an apnea therapy comprises placing an engagement structure on a tissue of the subject to engage the tissue of the subject. The engagement structure is moved toward the tissue to a location to move the tissue. One or more of the location or a force to the engagement structure at the location is measured. The suitability of the of the subject for the apnea therapy is determined in response to the force at the location.

Abstract: A body temperature estimating device includes a visible light transmissive member, a wearing member, a sensor, and a processing unit. The visible light transmissive member transmits visible light and reflects infrared light. The wearing member is worn by a wearer. The wearing member holds the visible light transmissive member so as to be disposed in front of eyes of the wearer. The sensor detects infrared light emitted from the wearer of the wearing member and reflected by the visible light transmissive member. The processing unit estimates a body temperature of the wearer on the basis of the infrared light detected by the sensor.

Abstract: A medical device for the measurement of brain temperature data through the Abreu brain thermal tunnel (ABTT) is described. Brain temperature measurement is the key and universal indicator of both disease and health equally, and is the only vital sign that cannot be artificially changed by emotional states. Currently, brain temperature is difficult to measure. However, the present disclosure describes a device that readily locates the Abreu brain thermal tunnel, and is configured to provide a non-contact temperature reading of the brain. Embodiments of the disclosed device enable an individual to measure their own temperature and enable medical professionals to measure the temperature of others.

Abstract: Methods and systems for detecting and projecting regions of tissue injury are described. The system may acquire reflectance data via optical scanning methods or imaging using visible, near-infrared, and/or infrared wavelengths. The system may analyze the acquired reflectance data to generate three-dimensional tissue injury maps, and project the generated injury maps onto the areas being imaged. The system may implement machine learning methods to subtract out false positive contributions from deoxygenated blood flow in underlying veins to generate the three-dimensional injury maps.

Abstract: A non-invasive electronic patient monitor tracks one or more physiological parameters of a patient, such as intravascular volume index (IVI), extravascular volume index (EVI), total hemoglobin (SpHb), impedance, and/or weight. The patient monitor determines if one or more of the physiological parameters are within a predetermined range. The patient monitor activates an alarm if one or more of the physiological parameters are outside the predetermined range and indicates a patient can be experiencing edema and/or heart failure, or sepsis.

Abstract: A medical device for review of clinical data in a playback mode is described. The medical device includes at least one output device comprising at least one display screen, at least one memory, and at least one processor coupled to the at least one memory and the at least one output device, the at least one processor configured to receive signals indicative of patient data from one or more patient interface devices communicatively coupled to the medical device, control the at least one display screen to provide a first visual representation of the patient data as an operational interface, and selectively display a playback interface at the at least one display screen wherein the playback interface enables user interactive review of the patient data based on a second visual representation of the patient data.

Abstract: Systems and methods for assisting user with an ear-worn/earable device and a learning machine language model to assist the user.

Abstract: A wearable device is wearable on an appendage of a user and includes a force-sensitive display screen to generate force data when a force is applied to the force-sensitive display screen, a photoplethysmogram (PPG) sensor, and one or more processors. The PPG sensor is positioned below an external surface of the force-sensitive display screen and generates PPG sensor data when the force is applied to the force-sensitive display screen. The one or more processors are configured to: determine, from the PPG sensor data and the force data, a variation of PPG blood volume pulse amplitude with a variation in pressure applied to the appendage, and calculate an estimate of blood pressure of the appendage from the variation of PPG blood volume pulse amplitude with the variation in the pressure applied to the appendage.

Abstract: The various implementations described herein include methods and systems for monitoring biometric information. In one aspect, a method includes (i) capturing, via an inward-facing camera of an artificial-reality headset, a plurality of images of a region of a face of the user, the region including an eye of the user, where (a) a first image of the plurality of images includes a first position of a pupil in the eye, and (b) a second image of the plurality of images includes a second position of the pupil in the eye, the second position different than the first position; and (ii) determining heart rate information based on the plurality of images.

Abstract: A method for generating dynamic real-time predictions using heart rate variability is provided. The method includes steps of gathering or calculating R-R intervals derived from one or more source sensors. A primary insight and a reference insight are calculated from the R-R intervals. The primary insight is compared with the reference insights to a predictive indicator. A system implementing the method is also provided.

Abstract: This application provides a heart rate detection method and an electronic device. Through the solution, when it is detected that a user wearing a smart wearable device is making a first workout, a PPG signal is acquired through a PPG sensor in the smart wearable device; first heart rate data is obtained based on the PPG signal and a first deep sequence neural network model; second heart rate data is obtained based on the PPG signal and a first frequency tracking algorithm model; and the first heart rate data and the second heart rate data are fused to obtain a target heart rate of the user. Because a frequency tracking algorithm can quickly track a heart rate change, thus the solution can compensate for a scenario in which a deep sequence neural network cannot implement timely tracking in the case of a sudden change of heart rate.

Abstract: The disclosed embodiments provide a system that non-invasively analyzes blood flow in a sample of living tissue. During operation, the system obtains light from a temporally coherent source, and splits the obtained light between a reference path and a sample path. Next, the system multiply scatters light from the sample path by passing the light through the sample. The system then recombines light from the reference path and the multiply scattered light from the sample path. Next, the system uses a sensor array to detect an interference pattern resulting from the recombination. Finally, the system analyzes signals from the sensor array to determine a blood flow in the sample.

Abstract: The present disclosure relates to a method of calculating a Pulse Wave Velocity (PWV) in a live body (B), the method comprising: obtaining a geometrical model of the body based on acquired sensor data; based on the obtained model, automatically positioning a first vibration sensor (1500) in relation to a neck area (N) of the body; based on the obtained model, automatically positioning a second vibration sensor (1502) in relation to a pelvis area (P) of the body; detecting a carotid artery pulse by means of the first vibration sensor and a femoral artery pulse by means of the second vibration sensor; and calculating the carotid-femoral PWV (cfPWV) based on a time difference between the detected carotid pulse and the detected femoral pulse, and on a spatial distance between the neck area and the pelvis area.

Abstract: A method for preparing a sensor wire includes: providing a sensor wire configured for biological pressure measurement and including: an elongated member; and a pressure sensor configured for biological pressure measurement, the pressure sensor being mounted at a distal end portion of the elongated member, wherein a dissolvable hydrophilic material is coated on a surface of the pressure sensor; and submerging the pressure sensor in saline solution, whereby the hydrophilic material dissolves and causes the saline solution to contact the pressure sensor.

Abstract: The present invention relates to a method for operating a medical imaging system (100), and to a respective medical imaging system (100) operable by this method.

Abstract: A system comprises a processor and a memory storing computer-readable instructions that, when executed by the processor, cause the system to: define a subregion of a model of an anatomic region, the subregion including a plurality of virtual tissue structures and corresponding to an area surrounding a tip of an image capture probe located within the anatomic region; compare a tissue structure in an image received from the image capture probe to at least a portion of virtual tissue structures of the plurality of virtual tissue structures; based on the comparison, determine a respective similarity measure between the image and each virtual tissue structure; identify a closest matched virtual tissue structure based on the determined similarity measures; and based on identifying the closest matched virtual tissue structure, register the image to the model to determine a virtual position for the image capture probe with respect to the model.

Abstract: A method for automatic position determination review during position tracking of an object inserted in a hollow organ of a patient by an electromagnetic tracking (EMT) system in the presence of an X-ray device with a movable acquisition system includes providing a registration of the EMT system to the acquisition system. A reference image of the hollow organ of the patient is provided, a registration of the reference image is provided to the acquisition system, a position of the object is determined by the EMT system, and an associated position on the reference image is determined. A plausibility criterion and/or a boundary condition is applied for reviewing a plausibility of the position determined by the EMT system based on the reference image. If the plausibility criterion and/or the boundary condition is violated, a position correction of the position determined by the EMT system and/or an alternative position determination is performed.

Abstract: A biosensor capsule having a generally cylindrical housing with a plurality of sensors including a radiation sensor including a radiation emitter and a radiation detector and at least one additional sensor. A processor uses data feeds from the radiation sensor and also from one more additional sensor of a different type. Additional sensors may be pressure or pH sensors to provide sensor signals to detect location along the GI tract in use. There may be a camera, and data derived from other sensors may be embedded in a video feed timeline. The capsule may have an asymmetric weight distribution to help keep sensing parts immersed in liquid.

Abstract: The techniques described herein relate to a system including: a housing including a gripping area and an exterior wall portion; a receptacle coupled to the housing, or at least partially defined by the housing; a sensor array, including a camera and an accelerometer, wherein the camera is located in an interior of the housing facing toward the exterior wall portion; and a communication nexus in communication with the sensor array including a processor coupled to memory. The processor can detect a tremor in a person using information from the camera and the accelerometer when the person holds the housing by the gripping area. The exterior wall portion can include a material that is opaque or reflective when viewed from the exterior of the housing but is translucent or transparent when viewed from the interior of the housing.

Abstract: Patient support apparatuses include a frame, support surface, and a controller. The controller provides notification to a user of a service event relating to the patient support apparatus. The controller limits functionality of a component of the patient support apparatus based upon a severity of the service event. The controller may also, or alternatively, detect when a control is activated by a user and, in response to such activation, determine whether the patient support apparatus has been marked for use or marked for servicing. If marked for use, the controller responds in a first manner, and if marked for service, the controller responds in a different manner. In other embodiments, a method is provided for determining an order in which multiple patient support apparatuses should be service. In still other embodiments, the patient support apparatus automatically changes to an unusable configuration when in need of high priority service.

Abstract: A device includes a processor configured to receive a signal from a feedback microphone of an earphone. The processor is also configured to determine, based on a change over time of sound reflection characteristics represented in the received signal, a condition corresponding to ear wax buildup or water in an ear canal.

Abstract: Various embodiments of the present disclosure disclose various tympanometry techniques. A tympanometry curve is generated for a user based at least in part on audio data indicative of a sound absorbance associated with a middle ear (ME) system over a fragment of an evaluation time period. A curve-pressure pair including the tympanometry curve and a correlating pressure measurement is generated and utilized to identify historical data indicative of a plurality of historical curve-pressure pairs with similar pressure measurements to the correlating pressure measurement. A performance metric is generated for the ME system of the user based at least in part on a comparison between the tympanometry curve and the historical data.

Abstract: Disclosed herein are embodiments of a device for measuring otoacoustic emissions (OAE) of a test subject. The device includes a stimulus generator configured to generate at least one acoustic stimulus, an ear probe, where the ear probe includes an output unit for emitting said at least one acoustic stimulus into an ear canal of the test subject, and an input unit for measuring an acoustic emission (Pspl) from the ear of the test subject. The device can further include an analysis unit configured to receive said measured acoustic emission (Pspl) and to determine a compensated pressure level (Pnpl) of said measured acoustic emission (Pspl), where the determination of the compensated pressure level is based on characterizing the middle ear of the test subject as a Norton-equivalent circuit. The present application further relates to a method of measuring otoacoustic emissions (OAE) of a test subject and to a computer program.

Abstract: An analyte monitoring system including an electronics housing including a shell having a first aperture and a welding portion proximate the first aperture, the welding portion including an infrared transmissive material, a mount having a second aperture axially aligned with the first aperture, wherein the mount is configured to be secured to the shell to define an interior space, a collar disposed within the interior space and having a central aperture axially aligned with the first aperture and the second aperture, and a first collapsible rib on a first side, the first collapsible rib axially aligned with the welding portion and including an infrared absorbent material, wherein the first collapsible rib is configured to weld to the welding portion, a circuit board disposed within the interior space, and an analyte sensor having a distal portion and a proximal portion.

Abstract: An implantation device for prompt subcutaneous implantation of a sensor to measure a physiological signal of an analyte in a biofluid of a living body is disclosed. The implantation includes a housing, an implantation module, a detachable module and a bottom cover. The housing has a bottom opening, the implantation module including an implanting device and a needle extracting device, the detachable module includes the sensor configured to be detachably engaged with the implantation module and a base configured to mount the sensor thereon, wherein the base is separated from the sensor before sensor implantation; and the bottom cover configured to be detachably coupled to the bottom opening so that the housing and the bottom cover together form an accommodating space. The base includes an adhesive pad, and a release layer is attached to the adhesive pad.

Abstract: Systems and methods for displaying metrics related to a user are described. Data indicative of glucose levels of the user is received. A first alert point for a potential glucose episode in a data set of time correlated glucose data, e.g., a glucose vs. time curve, is identified if the last received glucose data point satisfies at least one alert condition. A first potential local minimum in a first time period is identified. The first potential local minimum is confirmed as a first start point of a first glucose episode if the first potential local minimum satisfies at least one local minimum condition. An integrated area under the curve over time of a first portion of the graph beginning at the first start point of the first glucose episode to the first alert point is calculated. A first count value is assigned to the first portion.

Abstract: A continuous glucose monitoring system may include a hand-held monitor, a transmitter, an insulin pump, and an orthogonally redundant glucose sensor, which may comprise an optical glucose sensor and a non-optical glucose sensor. The former may be a fiber optical sensor, including a competitive glucose binding affinity assay with a glucose analog and a fluorophore-labeled glucose receptor, which is interrogated by an optical interrogating system, e.g., a stacked planar integrated optical system. The non-optical sensor may be an electrochemical sensor having a plurality of electrodes distributed along the length thereof. Proximal portions of the optical and electrochemical sensors may be housed inside the transmitter and operationally coupled with instrumentation for, e.g., receiving signals from the sensors, converting to respective glucose values, and communicating the glucose values.

Abstract: In one aspect, a method of estimating an HbA1c level is provided. The method may include obtaining a first and second glucose measurement, adding the first and the second glucose measurements to a glucose measurement data set, and calculating an estimated HbA1c level using at least the glucose measurement data set. In another aspect, a method of calculating a range of an estimated HbA1c level is provided. The method may comprise at least calculating an estimated HbA1c level and a standard deviation of the estimated HbA1c level using a glucose measurement data set, and combining the estimated HbA1c level with the standard deviation of the estimated HbA1c level to acquire the range of the estimated HbA1c level. In another aspect, a glucose monitoring device may display glycemic variability of an individual.

Abstract: A method for measuring an analyte includes identifying a test strip in a video stream generated by a camera based on at least one registration mark associated with the test strip depicted in the video stream, identifying application of a fluid dose to a deposit site formed on the test strip based on the video stream, activating a timer in response to the identification of the application of the fluid dose, generating at least one optical measurement of a reagent located at a measurement site on the test strip, and generating a measurement of an analyte in the fluid dose based on the at least one optical measurement of the reagent only in response to the at least one optical measurement being generated after a predetermined minimum time period has elapsed and prior to a predetermined maximum time period elapsing subsequent to the activating of the timer.

Abstract: Systems and methods of use involving sensors having a particle-containing domain are provided for continuous analyte measurement in a host. In some embodiments, a continuous analyte measurement system is configured to be wholly, transcutaneously, intravascularly or extracorporeally implanted.

Abstract: The present disclosure provides a method for controlling a treatment apparatus having advantages from the viewpoint of dealing with a change in a component contained in a treatment target while using a reaction system containing a redox enzyme and a coenzyme. The method for controlling a treatment apparatus according to the present disclosure includes acquiring of a first relationship R1 between a first voltage value and a first current value corresponding to the first voltage value by applying a voltage between a first electrode and a second electrode in a state where a treatment liquid does not contain the redox enzyme or the coenzyme. The controlling method includes acquiring of a second relationship R2 between a second voltage value and a second current value corresponding to the second voltage value by applying a voltage between the first electrode and the second electrode in a state where the treatment liquid contains the redox enzyme and the coenzyme.

Abstract: The present disclosure relates to a method for calibrating non-invasive biometric information measured by a non-invasive biometric information measurement apparatus, and more specifically to a method for calibrating non-invasive biometric information, wherein non-invasive biometric information measured by a non-invasive blood glucose meter can be learned using continuous biometric information measured by a continuous blood glucose meter, and thereby calibrated so as to be personalized to a user, and by using the continuous biometric information, measured by the continuous blood glucose meter to calibrate uncertain non-invasive biometric information measured by the non-invasive blood glucose meter so as to be personalized to the user, the pattern of increase/decrease in user biometric information can be accurately determined from the still uncertain non-invasive biometric information.

Abstract: Various examples are directed to systems and methods of and using analyte sensors. An example analyte sensor system comprises an analyte sensor and a hardware device in communication with the analyte sensor. The hardware device may be configured to perform operations comprising applying a first bias voltage to the analyte sensor, the first bias voltage less than an operational bias voltage of the analyte sensor, measuring a first current at the analyte sensor when the first bias voltage is applied, and applying a second bias voltage to the analyte sensor. The operations may further comprise measuring a second current at the analyte sensor when the second bias voltage is applied, detecting a plateau bias voltage using the first current and the second current, determining that the plateau bias voltage is less than a plateau bias voltage threshold, and executing a responsive action at the analyte sensor.

Abstract: Transdermal optical sensing systems and methods of use and calibration are described. The systems include a master and secondary sensing device, an optical component arranged within the device, with an optical component surface exposed for contact with an epidermis of a subject, an optical emitter, an optical detector, and electronics including a controller configured to measure the light at the optical detector to determine the presence of one or more compounds within the epidermis, to perform a calibration of the sensing device including generating a master calibration curve, to detect a condition state of the sensing device, and to generate a biomarker correlation curve for a biomarker or combination of biomarkers.

Abstract: Method and apparatus for optimizing analyte sensor calibration including receiving a current blood glucose measurement, retrieving a time information for an upcoming scheduled calibration event for calibrating an analyte sensor, determining temporal proximity between the current blood glucose measurement and the retrieved time information for the upcoming calibration event, initiating a calibration routine to calibrate the analyte sensor when the determined temporal proximity is within a predetermined time period, and overriding the upcoming scheduled calibration event using the current blood glucose measurement are provided.

Abstract: A blood sequestration device configured to isolate an initial, potentially contaminated portion of blood from the flow of blood of a patient, prior to directing the flow of blood to an outlet port where the blood can be accessed. The blood sequestration device including a body member having an interior wall defining a fluid conduit having a distal portion, a first proximal portion, and a second proximal portion, wherein the first proximal portion defines a sequestration chamber configured to isolate an initial portion of blood of a flow of blood, a vent path configured to enable the escape of gas initially trapped within the sequestration chamber.

Abstract: A biological liquid collection device designed to draw blood using an “atmospheric-balanced vacuum” to ensure the blood is exposed to the sample atmospheric partial pressure oxygen and partial pressure carbon dioxide levels as found in standard arterial blood gas syringes, resulting in blood gas sample stabilization during collection and a superior vacuum shelf-life by reducing the gas permeation rate through the plastic tube. The biological liquid collection device comprises a collection module for receiving a biological liquid sample, an evacuated container having an open end and a closed end wherein the evacuated container contains the collection module therein, and a closure for closing the open end of the evacuated container. The evacuated container comprises a gas composition that is substantially equal to the gas composition of the atmosphere outside of the evacuated container. A method for forming the atmospherically balanced vacuum collection device is also provided.

Abstract: Blood sample optimization systems and methods are described that reduce or eliminate contaminates in collected blood samples, which in turn reduces or eliminates false positive readings in blood cultures or other testing of collected blood samples. A blood sample optimization system can include a blood sequestration device located between a patient needle and a sample needle. The blood sequestration device can include a sequestration chamber for sequestering an initial, potentially contaminated aliquot of blood, and may further include a sampling channel that bypasses the sequestration chamber to convey likely uncontaminated blood between the patient needle and the sample needle after the initial aliquot of blood is sequestered in the sequestration chamber.

Abstract: This invention relates to a medical device for use in aiding the successful placement of a needle tip in a blood vessel. The medical device comprises a body defining a vacuum chamber therein, a port for engagement of a hub of a needle, a fluid passageway through the port from the exterior of the body to the vacuum chamber in the interior of the body, and means to generate an audio/haptic feedback to a user acted upon by a vacuum in the vacuum chamber. The means to generate the audio/haptic feedback comprises an abutment arm and a complementary abutment surface engaged by the abutment arm. The abutment surface has ribs along its length, opposing the abutment arm. The vacuum in the vacuum chamber moves one of the abutment arm and the abutment surface relative to the other, thereby causing the abutment arm to releasably engage a rib to produce the audible/haptic feedback.

Abstract: An example information processing system executes a game application. The information processing system obtains user information for calculating information relating to sleep of a user, and calculates health information relating to sleep and/or fatigue of the user based on the obtained user information. The information processing system controls a game progress of the game application based on the health information.

Abstract: The present disclosure relates to a computer-implemented method of providing a plurality of consecutive tests for a test person comprises the steps of: providing at least one set of visual stimuli having a predefined order, wherein in a test the test person is expected to select the stimuli according to their predefined order, such that the response to a stimulus is a function of the response to the preceding stimulus according to the predefined order, providing a pattern defined by a plurality of predetermined positions, for each of the plurality of tests, mapping the stimuli to the pattern in a unique sequence according to a pseudo-random distribution function, wherein said function is defined: such that a mean distance between each pair of consecutive pattern positions, to which a stimulus and its preceding stimulus are mapped, is within a first predetermined range for each of the plurality of tests, and/or such that a total distance is within a second predetermined range for each of the plurality of t

Abstract: A device and method for testing visual processing capabilities of a subject is provided. The device comprises a display unit configured to display a visual stimulus picture to the subject and a tracking unit configured to perform eye tracking to record gaze data of the subject during display of the visual stimulus picture. The gaze data includes one or more time parameters associated with the gaze of the subject to an area in the visual stimulus picture. The device further comprises a processing unit configured to evaluate the one or more time parameters in the recorded gaze data, the one or more time parameters capable of indicating an autism status of the subject.

Abstract: An information processing device 1X mainly includes a stress value acquisition means 17X, a stress release action detection means 18X, and a notification means 19X. The stress value acquisition means 17X acquires a stress value representing a degree of stress of a target person. The stress release action detection means 18X detects a stress release action, which is an action for releasing a stress, based on the stress value. The notification means 19X makes a notification of a detection result of the stress release action.

Abstract: An information processing device 1X mainly includes an environmental information acquisition means 15X and a mental state estimation means 16X. The environmental information acquisition means 15X is configured to acquire environmental information “Ie” which is information on environment. The mental state estimation means 16X is configured to estimate, based on the environmental information Ie, a mental state of a group present in the environment indicated by the environmental information Ie.

Abstract: An electronic device for providing biometric information is provided. The electronic device includes a sensor module, a memory, and a processor electrically connected to the sensor module and the memory. The processor obtains a biometric signal from the sensor module at a predetermined time interval, determines whether a user is in a first state on the basis of the obtained biometric signal, in case the user is in a first state, obtains a representative value for a respective of the at least one biometric signal, defines the obtained representative value for the respective of the at least one biometric signal as a candidate reference value for a corresponding biometric signal, determines a candidate reference value satisfying a predetermined condition as a first reference value for the corresponding biometric signal, and updates a second reference value previously configured for the corresponding biometric signal on the basis of the first reference value.

Abstract: Disclosed are wearable bands, such as rings, for monitoring and diagnosing cardiovascular conditions of a wearer, along with related systems, algorithms, and methods. The disclosed wearable bands can continuously monitor the wearer's cardiovascular status by measuring heart rate and/or other physiological properties of the wearer. Disclosed wearable bands can further comprise at least two EKG electrodes, including a first electrode on the inner surface adapted to detect a signal from the finger and a second electrode on the outer surface adapted to detect a cardiovascular signal from another body part. The wearable bands can be linked wirelessly to a mobile device that the person can interact with. The mobile device can be linked to other distributed system components and healthcare providers, such as to send a message to a predetermined recipient based upon the physiological properties measured by the wearable band.

Abstract: A device for measuring electroencephalography (EEG) recordings of a subject, the portable device including a casing, at least two first electrodes extending from a first surface of the casing, the at least two first electrodes being configured to contact a scalp of the subject during an EEG recording, and at least one second electrode disposed on a second surface of the casing and configured to provide a ground connection during the EEG recording.

Abstract: Disclosed systems, methods, and products include a self-contained electroencephalogram (EEG) recording patch including a first electrode, a second electrode and where the first and second electrodes cooperate to measure a skin-electrode signal, a substrate containing circuitry for generating an EEG signal there-from, amplifying the EEG signal, digitizing the EEG signal, and retrievably storing the EGG signal in a programmatic fashion. The patch also comprises a power source and an enclosure that houses the substrate, the power source, and the first and second electrodes in a unitary package.

Abstract: A system for determining cardiovascular characteristics is to be disposed on the body of a subject. The body has a detection area. The system includes a detector member and a processor. The detector member includes at least sixteen precordial electrodes which are to be placed on the chest of the subject within the detection area and which produce at least sixteen electrocardiogram (ECG) signals. The processor calculates at least twenty-four characteristic values based on the ECG signals. The characteristic values serve as basis for determining a location of chronic or acute myocardial ischemia in the body and a region of chronic or acute myocardial ischemia in the heart of the subject.

Abstract: Disclosed is a portable electrocardiogram measuring device for calculating one or more electrocardiogram leads according to an embodiment of the present disclosure. The device may include: a main measurement unit comprising a first electrode, a second electrode, and one or more processors; and a sub measurement unit comprising a third electrode, in which the one or more processors measure an electrocardiogram, by receiving electrical signals from at least two electrodes in a measurable state and by calculating different types of electrocardiogram leads based on the number of electrodes in the measurable state and an attachment position of electrodes.