[The automated diagnosis of different forms of ischemic heart disease in the practice of a telecardiology diagnostic center]. / Avtomatizirovannaia diagnostika razlichnykh form ishemicheskoi bolezni sedrtsa v praktike distantsionnogo kardiologicheskogo diagnosticheskogo tsentra.

The data of the authors' work based on the experience gained with 36,500 telecardiological consultations provided within the framework of the counselling center point to the importance of taking into consideration, in addition to the ECG readings, of the clinical data on the patient to formulate the final diagnosis. In order to obtain formalized clinical information, a coding chart including 19 signs with regard to the gradation in the monotonously increasing extent of derangements has been elaborated. The mathematic maintenance of the work using algorithms of image recognition made it possible to derive a linear formula for computing the magnitude of the total diagnostic index. According to its magnitude the patient's pathology can be attributed to one of the three classes: 0--no coronary heart disease. I--steady angina pectoris, II--acute coronary heart disease. Judging from the examination sequence the percentage of errors does not exceed 8.3% with a tendency towards overdiagnosis of coronary heart disease.

[Dynamics of bundle-branch block in the acute period of myocardial infarct]. / Dinamika blokady vetvei puchka Gisa v ostrom periode infarkta miokarda

On the basis of a randomized analysis of ECG of 200 patients in the acute phase of myocardial infarction the relative incidence of partial blocks was demonstrated: 33% among the survivors, and 54% among the hospital mortality cases. The prognostic value of the development of blocks was supported by the fact that it corresponded to further aggravation of the clinical course--increased cardiac pains, manifestations of cardiac insufficiency, development of arrhythmias. The bundle of His branch block may mask the infarction changes of ECG. Signs of incomplete blocking were revealed that include a leftward deviation of the axis, increase of R-wave amplitude in the 1 and aVL leads, appearance of enhancement of the S-wave in the II and V5-6 leads that preceed a complete blocking of the appropriate branch. The obtained data indicate the necessity of tracing the intraventricular conduction in the course of ECG monitoring during the acute period of myocardial infarction.