Abstract: Respiratory diseases related to gastroesophageal reflux disease in a patient are diagnosed by detecting esophageal or pharyngeal impedance and pH in the patient, detecting oxygen saturation in the patient, and diagnosing the respiratory diseases from the esophageal or pharyngeal impedance, the pH, and the oxygen saturation.

Abstract: Devices, systems, and methods for determining fractional flow reserve. At least one method for determining fractional flow reserve of the present disclosure comprises the steps positioning a device comprising at least two sensors within a luminal organ at or near a stenosis, wherein the at least two sensors are separated a predetermined distance from one another, operating the device to determine flow velocity of a second fluid introduced into me luminal organ to temporarily displace a first fluid present within the luminal organ, and determining fractional flow reserve at or near the stenosis based upon the flow velocity, a mean aortic pressure within the luminal organ, and at least one cross-sectional area at or near the stenosis. Devices and systems useful for performing such exemplary methods are also disclosed herein.

Abstract: A medical device system including a physiological sensor is configured to perform a method for detecting signal artifact in a signal waveform acquired by the sensor. A signal waveform is sensed in a patient using the physiological sensor and a fiducial point associated with the sensed waveform is identified. A point value is established using the fiducial point. Signal artifact is detected in response to the established point value and an established threshold, and at least a portion of the signal waveform is rejected in response to detecting signal artifact.

Abstract: The present invention relates to a monitoring system and method for use with a body of a subject. The system comprises a medical device, having a portion thereof configured to be placed inside the subject's body, said portion of the medical device being configured to be propelled by fluid pressure through a body lumen; at least two pressure sensors accommodated remotely from the subject's body at two different spaced-apart positions outside the subject's body and configured and operable to detect pressure at the two spaced-apart remote positions; said at least two pressure sensors being in fluid communication with at least one site inside the subject's body, a relation between the pressure at said at least one site and the pressures at said two spaced-apart remote positions being thereby indicative of the fluid pressure at said at least one site.

Abstract: Systems and methods are provided for monitoring a patient during a procedure. A physiological parameter of a patient is monitored during a procedure at an associated sensor. Respective cumulative times are measured for which the monitored physiological parameter of the patient meets each of a plurality of threshold values during the procedure. A risk metric is calculated for the patient, representing an effect of monitored physiological parameter on a patient outcome related to the procedure from the measured cumulative times for which the monitored physiological parameter of the patient met each of the plurality of threshold values.

Abstract: This document discusses, among other things, a system comprising a sensor signal processor configured to receive a plurality of electrical sensor signals produced by a plurality of sensors and at least one sensor signal produced by an implantable sensor, a memory that includes information indicating a co-morbidity of a subject, a sensor signal selection circuit that selects a sensor signal to monitor from among the plurality of sensor signals, according to an indicated co-morbidity, a threshold adjustment circuit that adjusts a detection threshold of the selected sensor signal according to the indicated co-morbidity, and a decision circuit that applies the adjusted detection threshold to the selected sensor signal to determine whether an event associated with worsening heart failure (HF) occurred in the subject and outputs an indication of whether the event associated with worsening HF occurred to a user or process.

Abstract: The disclosed is an arteriosclerosis evaluating apparatus capable of easily separating pulse wave data detected at one measurement site into an incident wave and a reflected wave and capable of easily determining and evaluating the degree of arteriosclerosis. The pulse wave transmitted through an artery is detected at one site of a living body by a pulse wave detection device, and the detected pulse wave is fitted with a fitting function by a breakdown device so that the detected pulse wave can be broken down into an incident wave and a reflected wave. The degree of arteriosclerosis is evaluated from the amplitude intensities (i.e., peak intensities) of the incident wave and the reflected wave broken down from the pulse wave.

Abstract: A non-invasive blood pressure system is disclosed herein. The non-invasive blood pressure system includes a pressure transducer configured to obtain pressure data comprising a transient baseline effects component. The non-invasive blood pressure system also includes a processor adapted to receive the pressure data from the pressure transducer. The processor is configured to generate a transient baseline effects model, and to implement the transient baseline effects model to at least partially remove the transient baseline effects component of the pressure data. The removal of the transient baseline effects component from the pressure data eliminates a potential source of error and thereby enables a more accurate blood pressure estimate.

Abstract: A method and an apparatus for non-interfering blood pressure measurements, relates to an apparatus for continuously monitoring blood pressure for patients at home or at work. The apparatus includes an extra-corporal sensor for blood pressure determination with a flexible housing adapted to be attached to the body of a living being proximate to an artery, and an electronic circuit for wireless coupling to a remote transceiver in accordance with the blood pressure in the artery, the remote transceiver adapted for wireless coupling to the sensor for generation of a pressure signal in accordance with the blood pressure in the artery, and a processor connected to the remote transceiver for reception of the pressure signal and adapted to estimate systolic and diastolic pressure based on the signal.

Abstract: An implantable coronary perfusion monitoring device for in-vivo determination of a coronary perfusion index (CPI) indicative of the coronary perfusion of a heart has a time measurement unit to determine a blood pressure reflection wave measure t indicating the timely position in the heart cycle of the maximum of a reflected blood pressure wave and in a time period starting at a preset point of time in systole and ending at a local maximum of blood pressure following aortic valve closure and, a diastolic peak pressure measurement unit adapted to determine a diastolic peak blood pressure measure DPP related to diastolic aortic peak pressure and a systolic arterial pressure measurement unit adapted to determine a systolic arterial blood pressure measure SAP related to systolic arterial pressure, and a coronary perfusion index calculating unit adapted to determine said coronary perfusion index CPI as (t·DPP)/SAP.

Abstract: According to one embodiment, a pressure sensor includes a substrate, a first electrode, a second electrode, a first magnetic layer, a second magnetic, a spacer layer, a third magnetic layer. The substrate includes a first region and a second region. The first electrode is provided on the first region. The second electrode is provided on the first electrode. The first magnetic layer is provided between the first electrode and the second electrode. The second magnetic layer is provided between the first electrode and the first magnetic layer or between the first magnetic layer and the second electrode. The spacer layer is provided between the first magnetic layer and the second magnetic layer in a stacking direction of layers from the first electrode to the second electrode. The third magnetic layer is provided continuously with the second magnetic layer on the second region.

Abstract: This invention describes a method for processing pressure signals derivable from locations inside or outside a human or animal body or body cavity. Different aspects of the invention relate to a method for optimal differentiating between cardiac beat- and artifact-induced pressure waves, a method for obtaining new and improved information from said pressure signals, a method for obtaining signals predicting pressures inside a body or body cavity from pressure signals outside said body or body cavity. In particular, this invention describes a method for modifying individual continuous non-invasive pressure-related signals into signals highly predictable of the corresponding invasive pressure-related signals based on already established relationships that can be used for formula-based adjustments of individual signals solely obtained by a non-invasive approach.

Abstract: A blood pressure measurement device is mounted with a radio-controlled clock function in a main body without lowering reception performance of the standard radio wave of the radio-controlled clock. A substrate including a sensor mounting surface and a sensor non-mounting surface is mounted with a pressure sensor. An antenna for receiving the standard radio wave including time information of the radio-controlled clock is mounted. The antenna includes a bar-shaped magnetic body core and a coil wound around the magnetic body core. A pump is arranged such that an axis line direction of the motor and an extending direction of the magnetic body core are substantially orthogonal. The substrate and the substrate are arranged so that the sensor non-mounting surface of the substrate and the antenna mounting surface of the sensor face each other.

Abstract: The present disclosure relates to a therapeutic method for improving the hemodynamics, the overall microcirculation in organs, and the restoration and preservation of deficient endothelial function in a patient, the method includes maintaining blood circulation in the patient's veins and arteries and temporarily relieving the heart of its pumping function. Relief may be accomplished by increasing the preload of the right ventricle so as to improve oxygenation of the myocardium and its contractility, reducing and diffusing regular pulsations in the proximity of the aortic root so as to improve the hemodynamics of the left ventricle of the heart, and/or mechanically stimulating the endothelium by shear forces so as to reduce systemic and pulmonary afterload.

Abstract: System, methods and apparatus for a disposable transducer mounting device that secures one transducer to a patient. Based on the illustrative embodiments, the holder is of rigid or semi-rigid material that has the ability to secure the transducer via rails and has an adhesive base that is used to secure the transducer and mounting device to the patient at the desired location.

Abstract: In a medical communication method, two or more persons are identified as having a selected medical condition or characteristic. At the residence of each identified person, a video conference-enabling unit (56) is operatively connected with a consumer electronics device (50, 52) disposed in the identified person's residence. A video conference is conducted between at least two of the two or more identified persons using their respective consumer electronics devices (50, 52) and video conference-enabling units (56).

Abstract: A method for determination of cardiac output from a recording of an arterial pressure waveform (10). The method comprises the steps of measuring the patient's peripheral arterial pressure relative to time in order to estimate a central pressure waveform (CPW) and calculating the patient's cardiac output from the CPW using the Water Hammer formula (as defined herein).

Abstract: A biological information measurement apparatus includes an electromagnetic wave applying unit configured to apply, to a living body, a first electromagnetic wave and a second electromagnetic wave having a frequency different from a frequency of the first electromagnetic wave; a reflected wave receiver configured to receive a first reflected wave corresponding to the first electromagnetic wave and a second reflected wave corresponding to the second electromagnetic wave; a correlation value configured to calculate unit calculating a correlation value between the first and second reflected waves; a correlation value evaluating unit configured to determine whether the correlation value satisfies a given condition; and a biological information measuring unit configured to measure biological information based on the first or second reflected wave when the correlation value evaluating unit determines that the correlation value satisfies the given condition.

Abstract: In a medical device and method to monitor pulmonary artery pressure of a patient, a first parameter related to the right ventricular straight volume of the patient's is detected, and a second parameter related to the right ventricular ejection rate of the patient's heart, or related to the workload of the patient's heart, is also determined. A pulmonary pressure index is determined by combining the first and second parameters, with variations of the pulmonary pressure index indicating variations in the pulmonary artery pressure. Pulmonary artery hypertension can be monitored with such a device and method.

Abstract: Methods and apparatus provide a wireless electrode having energy conservation. In one embodiment, a wireless electrode includes a radio module coupled to the sensor to wirelessly transmit the cardiac information, an energy source to power the radio module, and an activation mechanism coupled to the energy source, the activation mechanism having an activated state in which power from the energy source is delivered to the radio module and a non-activated state in which power from the energy source is not delivered to the radio module.

Abstract: The invention features a vital sign monitor that includes: 1) a hardware control component featuring a microprocessor that operates an interactive, icon-driven GUI on an LCD; and, 2) a sensor component that connects to the control component through a shielded coaxial cable. The sensor features: 1) an optical component that generates a first signal; 2) a plurality electrical components (e.g. electrodes) that generate a second signal; and, 3) an acoustic component that generates a third signal. The microprocessor runs compiled computer code that operates: 1) the touch panel LCD; 2) a graphical user interface that includes multiple icons corresponding to different software operations; 3) a file-management system for storing and retrieving vital sign information; and 4) USB and short-range wireless systems for transferring data to and from the device to a PC.

Abstract: The invention provides a system and method for measuring vital signs (e.g. SYS, DIA, SpO2, heart rate, and respiratory rate) and motion (e.g. activity level, posture, degree of motion, and arm height) from a patient. The system features: (i) first and second sensors configured to independently generate time-dependent waveforms indicative of one or more contractile properties of the patient's heart; and (ii) at least three motion-detecting sensors positioned on the forearm, upper arm, and a body location other than the forearm or upper arm of the patient. Each motion-detecting sensor generates at least one time-dependent motion waveform indicative of motion of the location on the patient's body to which it is affixed.

Abstract: A system and method for managing preload reserve and tracking the inotropic state of a patient's heart. The S1 heart sound is measured as a proxy for direct measurement of stroke volume. The S3 heart sound may be measured as a proxy for direct measurement of preload level. The S1-S3 pair yield a point on a Frank Starling type of curve, and reveal information regarding the patient's ventricular operating point and inotropic state. As an alternative, or in addition to, measurement of the S3 heart sound, the S4 heart sound may be measured or a direct pressure measurement may be made for the sake of determining the patient's preload level. The aforementioned measurements may be made by a cardiac rhythm management device, such as a pacemaker or implantable defibrillator.

Abstract: A system includes a controller that receives a physiological signal representing a non-invasive measure of a physiological parameter. The controller applies a compliance metric to the physiological signal and generates an autoregulation status signal that indicates a status of cerebral autoregulation in the patient. The autoregulation status signal is based at least in part on the compliance metric applied to the physiological signal.

Abstract: A medical imaging device includes a sensor unit for detecting a physiological signal, and a data evaluation unit which, on the basis of the detected physiological signals, determines a trigger signal for a medical imaging examination on a patient. The sensor unit includes at least one sensor element which is designed for detection of at least one blood circulation signal.

Abstract: A system improves detection and diagnosis of blood pressure based cardiac function and tissue activities by analyzing and characterizing cardiac blood pressure signals (including non-invasive and invasive blood pressure, discrete values and continuous waveforms) using pressure signal variation and variability calculation and evaluation. The system combines blood pressure analysis with multi clinical related factors and parameters to detect and quantify cardiac health status and arrhythmia severity. The system determines an accurate time, location and severity of cardiac pathology and events by calculating blood pressure variability and statistical variation. The accurately and reliably identifies cardiac disorders, differentiates cardiac arrhythmias, characterizes pathological severity, predicts the life-threatening events, and supports evaluation of drug delivery effects.

Abstract: A method is provided for determining pulse transit time of a subject as a function of blood pressure. The method includes: measuring a proximal waveform indicative of the arterial pulse at a proximal site of the subject; measuring a distal waveform indicative of the arterial pulse at a distal site of the subject; defining a relationship between the proximal waveform and the distal waveform in terms of unknown parameters of a nonlinear model; determining the unknown parameters of the nonlinear model from the measured proximal waveform and the measured distal waveform; and determining pulse transit time for the subject as a function of blood pressure from the parameters of the nonlinear model. The nonlinear model can account for arterial compliance and peripheral wave reflection, where the arterial compliance depends on blood pressure.

Abstract: A monitoring device with a pedometer is disclosed herein. The monitoring device preferably comprises an article, an optical sensor, an accelerometer and processor. The optical sensor preferably comprises a photodetector and a plurality of light emitting diodes. A sensor signal from the optical sensor is processed with a filtered accelerometer output signal from the accelerometer to generate a pedometer function.

Abstract: A system and method for diagnosing a fluid status of a patient includes non-invasively determining a left ventricular pressure of blood within a left ventricle of a heart of the patient. The left ventricular pressure is compared to a predefined pressure value to diagnose the fluid status.

Abstract: Medical device systems and methods for making and using medical device systems are disclosed. An example medical device system may include a guidewire. A pressure sensor assembly may be disposed within the guidewire. The pressure sensor assembly may include a pressure sensor and a first optical fiber coupled to the pressure sensor. The first optical fiber may have a first outer diameter. A cable may be coupled to the guidewire. The cable may include a second optical fiber. The second optical fiber may have a second outer diameter greater than the first outer diameter.

Abstract: The present invention pertains to devices and methods for increasing the ease of data gathering and efficiency of information flow in a clinical setting. The devices of the present invention comprise medical examination tables, dental examination chairs and vital signs monitors, all of which further comprise integrated hardware and software that allow these devices to effectively collect and communicate data in a manner that allows for greater ease of use of these devices and subsequent increased efficiency in the clinical space on the part of the clinician. The medical examination tables and dental examination chairs of the present invention preferably include at least one load sensor for measuring a subject's weight when the subject is seated thereon. The methods of the present invention are directed at using the aforementioned devices to increase ease of data collection and efficiency of care delivery within a space in which the devices are used.

Abstract: In a sphygmomanometer, an elbow detection mechanism that detects the placement of a measurement subject's elbow is provided in a portion of a cuff unit above a rotation axis. Because the elbow detection mechanism is provided in the portion of the cuff unit above the rotation axis on the biological member (upper arm) exit side, the distance L between the elbow detection mechanism and the biological member (upper arm) exit of the cuff unit can be kept constant even when the cuff unit rotates. This enables providing a sphygmomanometer that has a mechanism for changing the inclination angle of the cuff unit relative to a base and includes a mechanism for achieving a constant distance between the elbow detection mechanism and the entrance of the cuff unit regardless of the inclination angle of the cuff unit.

Abstract: In measurement requiring application of pressure to a tissue of a living body such as blood pressure measurement, noise due to vibration tends to occur. It is difficult to accurately measure a pulse wave and a blood pressure value. It is also difficult to measure blood pressure in life activities or to measure blood pressure at intervals or continuously where a tonometer is always attached. There is consequently a problem of holding a biologic information detecting apparatus. The present invention solves the problems by providing an easy-to-wear biologic information detecting apparatus for stably detecting biologic information. The biologic information detecting apparatus includes a sensor for detecting biologic information in a pair of arms connected via a spindle, and the sensor is tightly attached to a projecting part in a living body, particularly, a tragus of an auricle.

Abstract: A method, system and computer readable medium for deriving central aortic systolic pressure by reversing the order of a set of predetermined number of blood pressure measurements to obtain a reversed blood pressure set; averaging the reversed blood pressure set such that the average set represents a moving average waveform; overlaying the reversed blood pressure set and the moving average waveform; identifying a point of intersection on the reversed arterial waveform and the moving average waveform, and setting the central aortic systolic pressure as a reversed blood pressure value in the reversed blood pressure set nearest to the point of intersection.

Abstract: Disclosed is a hypertension monitoring and notification device based on context information, which includes a data gain and storage unit for storing bio information of a user, context data, and weather and health information; a user context analysis unit for deducing context information of the user from the bio information and the context data to analyze context necessary for measuring hypertension; a specific hypertension analysis unit for analyzing specific hypertension using the context information; a blood pressure grade analysis unit for determining a blood pressure grade via the analyzed context information to deduce blood pressure signal light information and to transmit a recommendation content; and a result output and notification unit for outputting and notifying the user and the doctor of the bio information, the blood pressure signal light information, the specific hypertension information, and the context information.

Abstract: An apparatus and method for obtaining one or more physiological measurements associated with a user using ear-located sensors is disclosed herein. One or more of different types of sensors are configured to engage a user's ear. In some cases, the sensors will be included in one or both of a pair of earphones to capture physiological parameters. A portable device is configured to be in communication with the earphones to receive physiological parameters from the sensor(s) therein, and to potentially provide control signals to the sensors or other components in the earphones. The portable device determines physiological measurements corresponding to the received physiological parameters. The portable device is also configured to provide a user interface to interact with the user regarding the physiological measurements.

Abstract: In measurement requiring application of pressure to a tissue of a living body such as blood pressure measurement, noise due to vibration tends to occur. It is difficult to accurately measure a pulse wave and a blood pressure value. It is also difficult to measure blood pressure in life activities or to measure blood pressure at intervals or continuously where a tonometer is always attached. There is consequently a problem of holding a biologic information detecting apparatus. The present invention solves the problems by providing an easy-to-wear biologic information detecting apparatus for stably detecting biologic information. The biologic information detecting apparatus includes a sensor for detecting biologic information in a pair of arms connected via a spindle, and the sensor is tightly attached to a projecting part in a living body, particularly, a tragus of an auricle.

Abstract: In measurement requiring application of pressure to a tissue of a living body such as blood pressure measurement, noise due to vibration tends to occur. It is difficult to accurately measure a pulse wave and a blood pressure value. It is also difficult to measure blood pressure in life activities or to measure blood pressure at intervals or continuously where a tonometer is always attached. There is consequently a problem of holding a biologic information detecting apparatus. The present invention solves the problems by providing an easy-to-wear biologic information detecting apparatus for stably detecting biologic information. The biologic information detecting apparatus includes a sensor for detecting biologic information in a pair of arms connected via a spindle, and the sensor is tightly attached to a projecting part in a living body, particularly, a tragus of an auricle.

Abstract: In measurement requiring application of pressure to a tissue of a living body such as blood pressure measurement, noise due to vibration tends to occur. It is difficult to accurately measure a pulse wave and a blood pressure value. It is also difficult to measure blood pressure in life activities or to measure blood pressure at intervals or continuously where a tonometer is always attached. There is consequently a problem of holding a biologic information detecting apparatus. The present invention solves the problems by providing an easy-to-wear biologic information detecting apparatus for stably detecting biologic information. The biologic information detecting apparatus includes a sensor for detecting biologic information in a pair of arms connected via a spindle, and the sensor is tightly attached to a projecting part in a living body, particularly, a tragus of an auricle.

Abstract: A method for processing data to monitor volaemic condition in a human or animal subject includes identifying one or more reference values for each of one or more haemodynamic variables; receiving haemodynamic data representing the one or more haemodynamic variables measured from the subject over time; for at least one of the one or more haemodynamic variables, comparing the haemodynamic data with the respective one or more reference values; and identifying the existence of abnormal volaemic condition in the subject when the comparison indicates a deviation from the one or more reference values for at least one of the haemodynamic variables. The method may be combined with a visual display of haemodynamic data in real time, ideally in conjunction with a visual indicator of ideal reference values.

Abstract: The invention discloses an apparatus and method for measuring a blood pressure. In particular, the method and apparatus according to the invention are capable of eliminating motion artifacts induced by, for example, talking, irregular breathing, frequent swallowing, coughing, shaking, and so on motions of a subject. The method and apparatus according to the invention utilizes a set of fuzzy logic rules and a curve-fitting way to eliminate the motion artifacts.

Abstract: System, methods, and apparatuses produce simulated human physiological waveforms such as electrocardiograph (ECG) and blood pressure signals where the microcontroller and/or digital-to-analog converters may be switched to a lower power-consuming state by programmable instructions and switched on in response to a programmable sleep timer.

Abstract: Techniques are disclosed for pacing site selection. In one example, a method includes using a sensing element such as an ultrasonic transducer, an optical pressure sensor, a MEMS pressure sensor, a SAW pressure sensor, an accelerometer, a gyroscope, or any other suitable sensing element to sense a measure related to a cardiac strain in a heart resulting from contraction and relaxation of myocardium during a cardiac cycle. Based on the sensed strain, an output may be provided for use by a user of the system to select a segment of the heart for lead placement.

Abstract: A pressure sensor wire assembly measures pressure inside a body of a patient. The assembly comprises a pressure sensor element for measuring pressure and to generate a pressure sensor signal representative of the pressure, and a pressure sensor wire having the pressure sensor element at its distal portion, and adapted to be inserted into the body in order to position the sensor element within the body. A sensor signal adapting circuitry is an integrated part of the assembly, wherein the pressure sensor signal is applied to the adapting circuitry which is adapted to automatically generate an output pressure signal, related to the sensor signal, in a standardized format such that the measured pressure is retrievable by an external physiology monitor. The assembly further comprises an external pressure sensor to measure the pressure outside the patient's body and to generate external pressure values in dependence thereto.

Abstract: The invention relates to the field of technological assistance for anaesthesia and intensive care practitioners, as well as to the field of simple, reliable medical monitoring for managing anaesthesia and/or predicting deleterious medical events. The invention aims to provide a system enabling prevention and anticipation of procedures necessary for patients and/or maintenance of patients in a suitable anaesthetic state for a surgical operation at a given time. For this purpose, the invention provides a method of predicting abnormal medical events and/or assisting in diagnosis and/or monitoring, comprising the continuous, real-time detection of a concomitant occurrence of a temporary inefficiency in cardiac baroreceptor reflex and an activation of non-baroreceptor reflex cardiovascular control. The invention also relates to the device used to implement said method.

Abstract: A health and wellness social network can collect digital health and wellness information about network users and incentivize the users to engage in a more healthy and active lifestyle. In one example, a method includes receiving, at a server device, data related to a health of a user, the data being generated by a health measurement device configured to transmit the data over a network to the server device. The techniques also includes, responsive to receiving the data related to the health of the user, determining, by the server device, a wellness reward for the user, where different wellness rewards are associated with different data received from the user. The technique also includes modifying, by the server device, a user profile associated with the user to reflect the wellness reward.

Abstract: Disclosed are devices, systems, apparatus, methods, products, and other implementations, including a method that includes obtaining biometric data of a user, and generating instruction data, presentable on a user interface, based on data relating to one or more activities to be completed by the user and based on the biometric data of the user. In some embodiments, obtaining the biometric data may include measuring one or more of, for example, heart rate, blood pressure, blood oxygen level, temperature, speech-related attributes, breath, and/or eye behavior.

Abstract: The present invention relates to a stress-measuring device (10) and method for determining a level (15) of stress of a user (1), in particular long-term stress. The stress-measuring device (10) comprises an input interface (12) for receiving a skin conductance signal (11) indicating the skin conductance of the user (1), the skin conductance signal (11) over time forming skin conductance trace data (13). The stress-measuring device (10) further comprises a processing unit (14) for processing the skin conductance trace data (13), the processing unit (14) adapted to determine, over at least a portion of the skin conductance trace data (13), values of a rise time (tr) between at least two different points of the skin conductance trace data (13), to determine a frequency distribution of the rise time (tr) values, and to determine the level (15) of stress of the user (1) based on the determined frequency distribution.

Abstract: Systems and methods are described for obtaining and acting upon information indicative of circulatory health and related phenomena in human beings or other subjects.

Abstract: A multifunctional invasive cardiovascular diagnostic measurement host is disclosed that interfaces a variety of sensor devices, such as guide wire-mounted pressure sensors, flow sensors, temperature sensors, etc, and provides a multi-mode graphical user interface providing a plurality of displays in accordance with the various types of sensors and measurements rendered by the sensors.