Diagnosis ELECTRONICS.
Thus, electronic devices have a great help in the treatment of various heart diseases. However, before you treat a patient, it is necessary to diagnose. Of correct and timely diagnosis depends on many things. Again, medicine turned to radio-electronics, which are based on new diagnostic techniques, developed instruments that detect various cardiac abnormalities,
When considering electrical phenomena which accompany the work of the heart, it was noted That the very heart doctor gives a unique account of its activities - an electrocardiogram. But this report is encrypted. To read it, you need a good understanding of electrophysiology of the heart, to be clear about what processes are reflected ECG and what is the origin of individual teeth. Currently, the study of the cardiovascular system without ECG is virtually impossible. Suffice it to say that the electrocardiogram often reflects the destruction of heart muscle in cases when there are no other signs of disease. With the development of electrocardiography revealed that one lead, one curve is obviously not enough to judge the activity of the heart. The fact is that the existing views of the heart electrical activity can be considered as a result some assumptions of "activity" of the equivalent dipole of the core, which can be represented as a source of bio-currents which arise in an appropriate volume conductor. (Dipoles is called the electrical system, formed by two oppositely charged, but charges are equal in magnitude, the distance between them is small compared with the distance of these charges from the points of the field study.) If you connect one electrocardiographic diversion to the vertical plates of an oscilloscope, and another - to the horizontal (which is similar to the method of obtaining figures Listazhu), we obtain the vector-electrocardiogram (VEKG).
Currently, there are a huge number of systematic features, which, given an electrocardiogram and deviations from the norm VEKG, an expert cardiologist diagnoses. However, very often for an accurate diagnosis is necessary to view many meters record the ECG, which is very unproductive and, most importantly, often leads to loss of relevant information. In addition, the inadequacy of 'visual method transcripts ECG sometimes not detect existing variation in cardiac activity.
So now a lot of attention paid to the creation of electronic devices to automate data collection, analysis and processing of signals coming from the heart. ECG is only a vague reflection of the total before the end of the biophysical processes and therefore is a convenient and accurate enough only for a given level of development of our knowledge.