100 results about "Electrocardiographic waveform" patented technology

A plurality of electrodes for measuring electrocardiogarphic waveforms are attached on body surface positions that constitute a subset of the standard 12-lead system. The measured electrocardiogarphic waveforms of said subset of said standard 12-lead system are used to calculate the electrocardiogarphic waveforms of remaining leads in the said standard 12-lead system. The measured and calculated electrocardiographic waveforms are synthesized to form a standard 12-lead electrocardiogram. The invention is capable of monitoring the 12-lead electrocardiogram with a reduced number of electrodes, wherein a portion of waveforms are directly measured and used as primary information for diagnosing heart disease, and the other portion of waveforms are derived from the measured leads and are used as a secondary information for improving the accuracy of diagnosis. The invention is especially useful in monitoring ischemic heart disease and acute myocardial infarction in cases where mounting and maintaining ten electrodes to obtain 12-lead electrocardiogram is difficult, such as in ambulatory monitoring, long-term monitoring and home monitoring.

A portable electrocardiograph (100A), which has a first electrode (121) on the outer surface of a device body (110), and has an electrode leading out from the device body (110) to the outside of the device body (110) through a connecting cable (181). The second electrode (122). The first electrode (121) and the second electrode (122) are brought into contact with the surface of the body, and by measuring the potential difference generated between these electrodes, an electrocardiographic waveform is measured. As a result, myoelectric potentials generated by muscles other than the myocardium are not superimposed on the electrocardiographic waveform as noise, and the electrocardiographic waveform can be measured stably with high precision.

In a portable electrocardiograph, combinations of analysis results corresponding to analysis items of an electrocardiographic waveform based on electrocardiography and display contents are stored in advance in association with each other. Thereby, the portable electrocardiograph analyzes obtained electrocardiographic waveform data to classify the electrocardiographic waveform data by the analysis items based on electrocardiography (S104). It collates a classification result being classified and the combinations of analysis results stored to select a corresponding display content (S108). It displays the selected display content as an evaluation of the electrocardiographic waveform data (S110).

A portable electrocardiograph having a display function and method is disclosed. In measuring an electrocardiographic waveform, an electrocardiograph (1) is held in position by a grip including a negative electrode (14) while simultaneously pressing a contact section including a positive electrode (16) against an electrode contact portion other than the right hand of the subject. The measurement result is displayed on a display unit (10) during the measurement operation. The measurement method is divided into the induction mode I in which the contact section including the positive electrode (16) is pressed against the subject's left hand, and the induction mode II in which the contact section including the positive electrode (16) is pressed against the subject's lower left abdomen. In induction mode I, the measurement result is displayed horizontally on the display (10), while in the measurement in mode II, the measurement result is displayed vertically.