Abstract: A heart monitor for processing input signals that represent periodically reoccurring events in a sequence of heart cycles. According to the invention graphical data representing a scatter plot of at least two dimensions, one dimension representing interval duration or its inverse and the other dimension representing change of duration or its inverse, respectively, are generated. The scatter plot comprises data points of which each data point represents heart interval duration or its inverse plotted against the change of duration with respect to a neighboring interval or the inverse of said change respectively.

Abstract: A method of simultaneously presenting current and stored ECG waveform data on a portable, external defibrillator during a rescue. The stored ECG waveform data may also be used in a rescue or training exercise.

Abstract: A method and an apparatus are provided for performing waveform analysis on physiological parameters. In one embodiment, a method includes reading measurement values of a first physiological parameter relating to time, and displaying them as a trend display graph in a trend display area that includes first coordinates representing time and second coordinates representing the measurement values. The method also includes acquiring a time selected in the trend display graph, and displaying, in a waveform display area, waveform data of a second physiological parameter associated with formation of the first physiological parameter during periods before and after the selected time. The waveform display area includes time coordinates. The disclosed embodiments allow medical staff to view the curve of a patient's physiological parameters throughout a monitoring/therapy period.

Abstract: Systems and methods are provided for graphically configuring leads for a medical device. According to one aspect, the system generally comprises a medical device and a processing device, such as a programmer or computer, adapted to be in communication with the medical device. The medical device has at least one lead with at least one electrode in a configuration that can be changed using the processing device. The processing device provides a graphical display of the configuration, including a representative image of a proposed electrical signal to be applied by the medical device between the at least one electrode of the medical device and at least one other electrode before the medical device applies the electrical signal between the at least one electrode and the at least one other electrode. In one embodiment, the graphical display graphically represents the lead(s), the electrode(s), a pulse polarity, and a vector.

Abstract: In general, the disclosure describes techniques for storing data corresponding to sensed high-rate non-sustained episodes that occur close in time to detection of a lead integrity condition. A method comprises detecting a first high-rate non-sustained episode, activating a data storage operation for storing data associated with high rate non-sustained episodes in response to detecting the first episode, and storing data associated with the first episode in an episode log in response to activating the data storage operation. Another method comprises detecting a lead integrity condition, and activating a data storage operation for storing data associated with high rate non-sustained episodes in response to detecting the condition.

Abstract: A system for supplementing communications capabilities of a patient monitoring device, the system including a card fitting within a device slot and configured to receive patient monitoring information from the device via the interface slot; a memory device hosted by the card and configured to store patient monitoring information; a wireless transceiver hosted by the card; an asset management database hosted by the card; and a processor communicably coupled to the wireless transceiver and the asset management database, the processor configured to format the patient monitoring information into a stream of one or more frames, each of the one or more frames associated with an EMS incident during which the patient monitoring information was gathered, the processor further configured to store the one or more frames to the asset management database and to transmit the stream of one or more frames with the wireless transceiver.

Abstract: An electrocardiogram (ECG) chart device and method capable of easily assisting with the diagnosis of heart disease. Hexagonal radar charts displayed on a screen act as indicators of feature values corresponding to data obtained from each of 12 electrode leads and correlated with the related portions of the heart. For example, a (V1, V2) lead is an indicator of a right ventricle. Each of the radar charts is schematically arranged to correspond with the related portion of the heart. Each vertex of the hexagonal radar charts acts as an indicator of the recognized value. More specifically, each vertex of the radar chart is based on a value obtained by extracting a waveform critical point, a waveform start point, a waveform end point, or the like, of constituent elements of the ECG waveform as the P wave, the Q wave, the R wave, the S wave, the ST segment, the T wave, or the like. Therefore, a user of the ECG radar chart device can intuitively and easily carry out interpretation of ECG data.

Abstract: Systems and methods are provided for monitoring a patient and graphically representing ST-segment deviations. A receiver acquires, from a plurality of leads, electrocardiogram (ECG) signals that each includes an ST-segment. A processor processes the ECG signals to determine baseline and current ST-segment deviations relative to an isoelectric value. A display module displays a graph that includes a first axis representing ST-segment deviation values and a second axis representing the plurality of leads. At each location along the second axis representing a respective lead, the graph displays a first set of graphic indicia representing the baseline ST-segment deviations and a second set of graphic indicia representing the current ST-segment deviations. In certain embodiments, the graphic indicia are represented by bar graphs. In other embodiments, the graphic indicia are represented by symbols that may be connected by line segments.

Abstract: Assessing symptomatic and asymptomatic physiologic changes due to chronic heart failure involves apparatus and methods for gauging degradation and possible improvement using automated measurement of inter-ventricular conduction time, both alone and in combination with other automated physiologic tests. Conduction times increase due to the greater distance a wavefront must traverse as a heart enlarges. Analysis of conduction time can be used to verify the occurrence of cardiac remodeling due to heart failure as well as beneficial reverse remodeling due to successful heart failure therapy delivery. Patient activity level(s) and presence/increase in pulmonary fluids can also be used to automatically determine changes in heart failure status and/or predict hospitalization. Conduction time is monitored between electrodes positioned in the left and right ventricles of the heart via endocardial or epicardial electrodes.

Abstract: In one aspect, a method for displaying closely proximate cardiac signals is provided and can include the steps of: (a) identifying one or more overlapping portions of a template signal and a data signal; (b) processing the overlapping portion so as to have a first color when displayed on a display; (c) processing the non-overlapping portion of the template signal to have a second color; (d) processing the non-overlapping portion of the data signal to have a third color; and (e) displaying the processed signals.

Abstract: An external programming system and method for implantable medical devices (IMDs) is disclosed. The external programming system includes a communication circuit, a display device, an input device, and a processor. The communication circuit is configured to link to an IMD to transmit or monitor IMD timing parameter settings. The display device is configured to display a textual representation of an IMD timing parameter setting and a specified IMD timing parameter limit, a graphical slide control comprising a movable feature indicating the IMD timing parameter setting, a graphical slide-control limit corresponding to the specified IMD timing parameter limit, and a graphical representation of physiologic information including a portion of said graphical representation aligned with the slide control movable feature. The input device is configured to adjust the movable feature in response to user input. The processor is configured to monitor or store an IMD timing parameter setting.

Abstract: Systems, devices, structures, and methods are provided to present a visual display based on data from an implantable medical device. The display includes a chart showing the frequency of a detected type of arrhythmia over a predetermined period of time.

Abstract: A system and method of presenting physiological data in a component ring. The method includes receiving a plurality of leads of physiological data. Morphology features are extracted from the plurality of leads. The morphology features are graphed by presenting a component ring associated with each of the morphology features. The system includes at least two sensors configured to collect physiological data. A processor is configured to extract amplitudes of morphology features. A graphical user interface is configured to graphically display the morphology features in a plurality of component rings.

Abstract: The present disclosure generally relates to a method, a device, and a computer-readable storage medium for detecting heart beats from cardiac signals whose quality, expressed in terms of signal amplitude and signal-to-noise ratio, varies dynamically in time. Hence, a method, a device, and a computer-readable storage medium for detecting electrical signals originating from a human or animal heart is proposed. The method includes the following steps: a) identifying an initial indication of the event in at least one of the signal channels, b) deciding whether or not the identified initial indication confirms the event depending on the quality of the signal channels in which initial indications are identified; and c) determining a point-of-detection for the event depending on the quality of the signal channels and depending from the shape of the signal.

Abstract: A medical signal interface device bidirectionally conveys signals between a patient and patient monitoring devices. The device comprises a bidirectional electrical signal interface that receives and buffers patient parameter monitoring signals received from a patient via patient attached leads and outputs treatment related signals used in applying invasive or non-invasive treatment to a patient. A bidirectional electrical signal processor operates in response to commands received from a control processor and is coupled to the electrical signal interface, for processing received patient parameter monitoring signals using filtering and amplification to provide processed patient monitoring signals for output to at least one patient monitoring device. The bidirectional electrical signal processor processes the treatment related signals for output by buffering the treatment related signals for output to a patient.

Abstract: A system for use in analysis of electrograms comprising: an input signal generator (302); an input electrode (304) for applying an input signal to a driving region of a heart (316); an output electrode (306a-c) for receiving an output signal at a driven region of the heart; a processing system (300) operable to receive signals indicative of said recorded value from the output electrode for analysing conduction paths through the heart, wherein the signal generator is operable to generate an input signal comprising a plurality of pulses, being spaced from each other by a pacing interval; and the processing system being arranged to identify signal delay between the input signal and the output signal on the basis of the signal received by the output electrode in relation to the plurality of pulses, and to identify a rate of variation in signal delay over a range of values of pacing interval.

Abstract: Improvement in the reliability of segmentation of a signal, such as an ECG signal, is achieved through the use of duration constraints. The signal is analysed using a hidden Markov model. The duration constraints specify minimum allowed durations for specific states of the model. The duration constraints can be incorporated either in the model itself or in a Viterbi algorithm used to compute the most probable state sequence given a conventional model. The derivation of a confidence measure from the model can be used to assess the quality and robustness of the segmentation and to identify any signals for which the segmentation is unreliable, for example due to the presence of noise or abnormality in the signal.

Abstract: EKG sensors ((150) are placed on a patient (140) to receive electrocardiogram (EKG) recording signals, which are typically combinations of original signals from different sources, such as pacemaker signals, QRS complex signals, and irregular oscillatory signals that suggest an arrhythmia condition. A computing module (120) uses independent component analysis to separate the recorded EKG signals. The separated signals are displayed to help physicians to analyze heart conditions and to identify probably locations of abnormal heart conditions. At least a portion of the separated signals can be further displayed in a chaos phase space portrait to help detect abnormality in heart conditions.

Abstract: Techniques for monitoring T-wave alternans (TWAs) in a patient are described. An implantable medical device (IMD), such as an implantable pacemaker, cardioverter, or diagnostic device, generates an EGM signal, e.g., a far field EGM signal, samples the EGM signal to obtain a single T-wave amplitude value for each T-wave over a plurality of beats, and stores the T-wave amplitude values in memory. The IMD creates a time series of the T-wave amplitude values stored in memory, calculates the power spectral density for the times series, and selects a power spectral density of a particular frequency, e.g., 0.5 cycles per beat, as the TWA value. The IMD may periodically determine TWA values for the patient and store the values in memory. The TWA values may be presented to medical personnel, e.g., as a trend. The IMD may deliver or modify therapy, or provide an alert, based on the TWA values.

Abstract: A method and apparatus utilizing a piecewise stitching adaptive algorithm (PSAA) to filter signal artifacts, such as those induced by cardiopulmonary resuscitation (CPR) from sensed signals in real-time. PSAA is a method of estimating artifact component present in a first signal that is highly correlated with a second signal. The PSAA may utilize autocorrelation and cross-correlation calculations to determine signal sample windows in the first and second signals. The PSAA may estimate a signal artifact in a primary signal segment based on the determined correlations between the primary signal and an artifact signal. The PSAA may remove the estimated signal artifact from the primary signal. In the absence of an artifact signal, PSAA is able to estimate artifacts in the first signal utilizing filters. The PSAA may be implemented in Automated External Defibrillators, Monitor Defibrillators or other devices capable sensing highly correlated signals such as, for example, ECG and CPR signals.

Abstract: A system and method that can simultaneously acquire electrocardiogram or pulse rate data (42, 44, 46), dynamically perform time-frequency (70) and chaotic analysis (60) in real-time, visually display the results in a convenient graphical format (50) and store the results in a computer file format (50).

Abstract: A cardiac rhythm management system provides a phonocardiographic image indicative of a heart's mechanical events related to hemodynamic performance. The phonocardiographic image includes a stack of acoustic sensor signal segments representing multiple cardiac cycles. Each acoustic sensor signal segment includes heart sounds indicative of the heart's mechanical events and representations of the heart's electrical events. The stack of acoustic sensor signal segments are aligned by a selected type of the heart's mechanical or electrical events and are grouped by a cardiac timing parameter for presentation.

Abstract: Systems and methods are provided for monitoring a patient and graphically representing ST-segment deviations. A receiver acquires, from a plurality of leads, electrocardiogram (ECG) signals that each includes an ST-segment. A processor processes the ECG signals to determine baseline and current ST-segment deviations relative to an isoelectric value. A display module displays a graph that includes a first axis representing ST-segment deviation values and a second axis representing the plurality of leads. At each location along the second axis representing a respective lead, the graph displays a first set of graphic indicia representing the baseline ST-segment deviations and a second set of graphic indicia representing the current ST-segment deviations. In certain embodiments, the graphic indicia are represented by bar graphs. In other embodiments, the graphic indicia are represented by symbols that may be connected by line segments.

Abstract: The present invention provides systems, methods and computer program products for monitoring a heart. According to one embodiment, the system includes an implantable registering unit. The registering unit comprises a first controller structured to register an electrical signal from the heart. The system includes a second controller in operable communication with the first controller. The second controller comprises a data repository structured to receive data corresponding to the registered electrical signal and being structured to store the data. The data repository stores data corresponding to a baseline electrical signal of the heart. The second controller is structured to receive the data from the first controller corresponding to the registered electrical signal and to compare the registered electrical signal to the baseline electrical signal to determine whether the heart is functioning properly.

Abstract: A system and method for presenting information relating to heart data can involve operations including identifying arrhythmia events in physiological data obtained for a living being, receiving human assessments of at least a portion of the arrhythmia events, determining a measure of correlation between the human assessments and the identified events, and selectively presenting information regarding the identified events based on the measure of correlation. The operations can also include identifying atrial fibrillation events in physiological data obtained for a living being, obtaining heart rate data for the living being, and presenting information regarding the heart rate data and duration of the atrial fibrillation events together with a common time scale to pictographically represent heart rate trend with atrial fibrillation burden during a defined time period.

Abstract: An electrocardiogram (ECG) chart device and method capable of easily assisting with the diagnosis of heart disease. Hexagonal radar charts displayed on a screen act as indicators of feature values corresponding to data obtained from each of 12 electrode leads and correlated with the related portions of the heart. For example, a (V1, V2) lead is an indicator of a right ventricle. Each of the radar charts is schematically arranged to correspond with the related portion of the heart. Each vertex of the hexagonal radar charts acts as an indicator of the recognized value. More specifically, each vertex of the radar chart is based on a value obtained by extracting a waveform critical point, a waveform start point, a waveform end point, or the like, of constituent elements of the ECG waveform as the P wave, the Q wave, the R wave, the S wave, the ST segment, the T wave, or the like. Therefore, a user of the ECG radar chart device can intuitively and easily carry out interpretation of ECG data.

Abstract: A system and method of enabling detection enhancements selected from a plurality of detection enhancements. In a system having a plurality of clinical rhythms, including a first clinical rhythm, where each of the detection enhancements is associated with the clinical rhythms, the first clinical rhythm is selected. The first clinical rhythm is associated with first and second detection enhancements. When the first clinical rhythm is selected, parameters of the first and second detection enhancements are set automatically. A determination is made as to whether changes are to be made to the parameters. If so, one or more of the parameters are modified under user control.

Abstract: A method of processing in a medical device an electric biological signal collected from a patient, includes: a) acquiring a plurality of samples from the electric biological signal according to a sampling process wherein each sample is taken from the electric biological signal and memorized; b) during the sampling process of a), monitoring an active/inactive status of a radio time-division-multiplexing transmission of signals from the medical device over a radio communication network; and, when the status of the radio time-division-multiplexing transmission becomes active, c) preventing in a) the acquisition of any of the plurality of samples, which according to the sampling process should be acquired during the active status of the radio time-division-multiplexing transmission, from being performed until the radio time-division-multiplexing transmission remains in the active status.

Abstract: A device and method for displaying medical data for a stress test monitoring system. A computer-implemented method and apparatus for displaying electrical impulse data of a human heart for analysis includes receiving cardiac electrical impulse data produced during a cardiac stress test by a plurality of electrode leads adapted for placement on a patient and calculating parameters for a plurality of display windows based on the data and providing a main display in which the plurality of display windows are positioned. A three dimensional color mapping plot is displayed in one of the plurality of display windows and a two dimensional color mapping plot is displayed in another of the plurality of display windows. Additionally, a plot of raw lead data from at least one lead is displayed in one of the plurality of display windows.

Abstract: Method for producing an electrophysiological map of a heart of the body of a patient, the method including the procedures of determining a respective target point location, and a respective probe orientation, confirming that the tip of a probe catheter is located at the respective target point location, confirming that the tip is oriented at the respective probe orientation, measuring the heart parameter value at each of the respective target point locations, and superimposing a plurality of representations respective of the heart parameter value, the respective target point location, and the respective probe orientation being determined with respect to heart parameter value which is to be measured, for each of a plurality of target points within the heart, the tip of a probe catheter being confirmed that it is located at the respective target point location, by comparing the currently detected location of the tip, with the respective target point location, the tip being confirmed that it is oriented at the r

Abstract: The present invention relates to a real-time electrocardiogram monitoring system and method, a patch-type electrocardiograph and a telecommunication apparatus.

Abstract: An ECG monitoring system for ambulatory patients includes a small multi-electrode patch that adhesively attaches to the chest of a patient. A reusable battery-powered ECG monitor clips onto the patch and receives patient electrical signals from the electrodes of the patch. A processor continuously processes received ECG signals and stores the signals in memory in the monitor. Processed ECG signals and cardiac event information are sent wirelessly to a cellphone handset for relay to a monitoring center. The ECG monitor is contained in a watertight sealed case with only electrical contacts on the outside of the case. The electrical contacts electrically couple the ECG monitor to the electrodes of the patch during patient monitoring and to a charger during recharge of the battery.

Abstract: The heartbeat frequency is not constant but subject to natural variations. This change in heartbeat frequency is called the heart rate variability (HRV). A method is provided for online-displaying a HRV biofeedback signal by which the cardiovascular state of a patient can be purposefully influenced. The parameters HRVi as determined according to the invention are used for said HRV biofeedback signal, wherein, as a function of the display, the patient should alter his behaviour in such a way that a desired cardiovascular state is attained. The inventive HRVi parameters provide a HRV biofeedback signal with high dynamics which allow the patient to react quickly to changes and therewith to reliably achieve and stabilise his own desired cardiovascular state.

Abstract: Systems and methods for characterizing aspects of an electrocardiogram signal are presented, wherein primary and secondary analysis schemas are utilized to determine the timing of the end of a signal wave, such as a descending Twave, with precision. In one embodiment, the primary analysis schema involves comparing voltage amplitudes within a given sampling window and the secondary analysis schema involves comparing the results of primary analysis for successive sampling windows. The system may comprise a processor or microcontroller embedded into a system such as an electrocardiogram hardware system, personal computer, electrophysiology system, or the like.

Abstract: A system fits a curve to a filtered ECG signal, processes the fitted curve (e.g., by applying transforms such as a KL Transform) and derives parameters for use in classifying heart cycle signal portions (such as an ST segment portion) into particular heart cycle signal portion categories associated with particular segment morphology. A system for heart signal classification includes an interface for receiving an electrical signal waveform comprising an R-wave and including an ST segment portion associated with heart electrical activity of a patient over a heart beat cycle. A signal processor processes data representing the electrical signal waveform by fitting a curve to the ST segment and applying a transform to the fitted curve to derive variance data indicating variance in the fitted curve. A signal classifier classifies the ST segment into one of multiple predetermined categories associated with the fitted ST segment curve geometry in response to the derived variance data.

Abstract: Methods for providing diagnostic information using endocardial surface data for a patient's heart are described herein. In some embodiments, endocardial surface data for the left ventricle of a heart is received. The endocardial surface data represents the endocardial surface of the left ventricle at multiple times over a heartbeat and is obtained using a volumetric imaging application. A representation in prolate spheroidal coordinates of the endocardial surface of the left ventricle at least a portion of the multiple times is generated using the endocardial surface data. The prolate spheroidal coordinates include a longitudinal angular coordinate ?, a circumferential angular coordinate ?, and a coordinate ? as a function of longitudinal angular coordinate ? and circumferential angular coordinate ?. A measure that provides diagnostic information related to the left ventricle is computed based at least on part on the value of coordinate ?.

Abstract: In some aspects, a method includes measuring unipolar signals at one or more electrodes in response to electrical activity in a heart cavity. The method also includes determining, based at least in part on Laplace's equation, bipolar physiological information at multiple locations of an surface based on the measured unipolar signals and positions of the one or more electrodes with respect to the surface.

Abstract: Systems, devices, methods, and techniques relating to generating and presenting information related to heart rate data. In one aspect, a system includes a monitoring device configured to obtain physiological data for a living being and to generate annotation data based on the physiological data for a total time period, a processing system configured to obtain the annotation data via a communication channel from the monitoring device and to generate for display based on the annotation data a daily patient report that includes, a chart showing summary statistical data for a proportion of a total monitored time period spent in cardiac arrhythmia for each of a plurality of days and summary statistical data for a proportion of the total monitored time period not spent in cardiac arrhythmia for each of the plurality of days.

Abstract: A method and apparatus for analyzing the QT interval characteristics of ECG signal data having a succession of waveforms produced by the beating of the heart. ECG signal data is obtained from a patient. The R-R interval and the QT intervals of the waveforms of the ECG signal data are determined. Waveforms of the ECG signal data having a stable heart rate are selected for use in determining the QT interval characteristics. Preferably, the waveforms selected are those having minimum R-R interval standard deviation and minimum R-R interval dispersion. The QT correction (QTc) is computed from the ECG signal data waveforms selected in the foregoing manner or on the basis of clinician editing. The R-R intervals, the QT intervals, and QTc for the heart beats of the selected waveforms are displayed for analysis and diagnosis purposes. The invention can also be used, in an analogous manner, to obtain and display other cardiac data from the ECG waveforms.

Abstract: A method and an apparatus are provided for performing waveform analysis on physiological parameters. In one embodiment, a method includes reading measurement values of a first physiological parameter relating to time, and displaying them as a trend display graph in a trend display area that includes first coordinates representing time and second coordinates representing the measurement values. The method also includes acquiring a time selected in the trend display graph, and displaying, in a waveform display area, waveform data of a second physiological parameter associated with formation of the first physiological parameter during periods before and after the selected time. The waveform display area includes time coordinates. The disclosed embodiments allow medical staff to view the curve of a patient's physiological parameters throughout a monitoring/therapy period.

Abstract: A programmer is provided for an implantable medical device capable of detecting cardiac events in a human patient. The programmer has a two-way wireless data communication mechanism with the implantable medical device and a graphical user interface is included which has a display and input mechanism designed for use in programming patient specific parameters for the detection of ST shift related cardiac events.

Abstract: An arrangement includes a mobile device executing a process to detect an episode in electrical signals representative of a beating heart. The mobile device determines that the detected episode is a notable finding and sends data corresponding to the notable finding to a second system. The second system analyzes the data corresponding to the notable finding using one or more additional computing resources.

Abstract: A plurality of ECG Superscore formulae, created from multiple parameter ECG measurements including those from advanced ECG techniques, can be optimized using additive multivariate statistical models or pattern recognition procedures, with the results compared against a large database of ECG measurements from individuals with known cardiac conditions and/or previous cardiac events. Superscore formulae utilize multiple ECG parameters and accompanying weighting coefficients and allow data obtained from any given patient to be used in calculating that patient's ECG Superscore results. ECG Superscores have retrospectively optimized accuracy for identifying and screening individuals for underlying heart disease and/or for determining the risk of future cardiac events. They thus have greater predictive value than that of any conventional or advanced ECG measurement alone or of any non-optimized combinations of conventional or advanced ECG measurements that have been used in the past.

Abstract: A medical device for processing physiological signals such as electrocardiograms. The processing includes: sampling a physiologic signal in a first channel with a first sampling rate, simultaneously sampling the physiologic signal in a second channel with a higher sampling rate to thus generate pairs of sampling values, forming the difference between two sampling values of each pair, comparing said difference with a threshold, and generating a noise detection indicator whenever said threshold is exceeded.

Abstract: A data acquisition module for use in monitoring a plurality of physiological signals is disclosed herein. The data acquisition module may include a first signal processing path for biopotential data, a second signal processing path for therapeutic event data, and a processing unit that receives and processes the data from the first and second signal processing paths. The data acquisition module may further compare identified likely therapeutic events in each of a plurality of psychological signals.

Abstract: A method for inferring disease similarity by similarity retrieval of electrocardiogram time-series, comprising: acquiring user ECG waveforms correspondingly depicting many cardiac cycles of the heart of many users stored in a database; pre-processing each of the user ECG waveforms through pre-processing steps to isolate sets of single cardiac cycles corresponding to different heart-rates detected for each of the user ECG waveforms, each single cardiac cycle within the many cardiac cycles of the heart of many users corresponds to one single heart-rate detected.

Abstract: Systems and methods are provided for graphically configuring leads for a medical device. According to one aspect, the system generally comprises a medical device and a processing device, such as a programmer or computer, adapted to be in communication with the medical device. The medical device has at least one lead with at least one electrode in a configuration that can be changed using the processing device. The processing device provides a graphical display of the configuration, including a representative image of a proposed electrical signal to be applied by the medical device between the at least one electrode of the medical device and at least one other electrode before the medical device applies the electrical signal between the at least one electrode and the at least one other electrode. In one embodiment, the graphical display graphically represents the lead(s), the electrode(s), a pulse polarity, and a vector.

Abstract: Virtual surgery systems, methods, and apparatuses that provide for the prediction, evaluation, and validation of various cosmetic and reconstructive surgical procedures. The virtual surgery systems, methods, and apparatuses utilize a scanner, measurement software, queries to a postoperative patient scan catalog, conversion of a preoperative image to a Virtual Reality Modeling Language (3-D) image, grafting and scaling of chosen postoperative surgery candidates, conversion from the converted 3-D image to a scanner readable format, and measuring the forecasted 3-D image.

Abstract: Systems and methods are provided for monitoring a patient and graphically representing ST-segment deviations. A receiver acquires, from a plurality of leads, electrocardiogram (ECG) signals that each includes an ST-segment. A processor processes the ECG signals to determine baseline and current ST-segment deviations relative to an isoelectric value. A display module displays a graph that includes a first axis representing ST-segment deviation values and a second axis representing the plurality of leads. At each location along the second axis representing a respective lead, the graph displays a first set of graphic indicia representing the baseline ST-segment deviations and a second set of graphic indicia representing the current ST-segment deviations. In certain embodiments, the graphic indicia are represented by bar graphs. In other embodiments, the graphic indicia are represented by symbols that may be connected by line segments.

Abstract: Techniques are provided for controlling the recording of intracardiac electrograms (IEGMs) within an implantable medical device such as a pacemaker, wherein the device is capable of recording different channels of IEGMs in response to different diagnostic triggers. Exemplary triggers include pacemaker-mediated tachycardia; atrial tachycardia, atrial fibrillation, ventricular tachycardia, etc. In one example, the device stores, for each diagnostic trigger, a physician selection of particular IEGMs to be recorded for subsequent review. Then, whenever a trigger is detected, the device senses and records only the particular IEGMs that had been selected by the physician for that particular trigger. The IEGMs are eventually transmitted to an external programmer for review. In this manner, the physician can specify particular IEGMs to be stored in response to particular diagnostic triggers, thereby providing considerable diagnostic flexibility, while also conserving memory.