the Further dynamics of an electrocardiogram. Zadnebazalnye heart attacks

you in section: the Further dynamics of an electrocardiogram

At distribution of a heart attack from a forward wall on a lateral wall left zheludochka respective alterations on an electrocardiogram are observed not only in I standard, AVI, left chest, but also in V.-V7-assignments.

Back heart attacks (anatomicheski - zadneperegorodochnye) are characterised by changes of an electrocardiogram in II, III standard, AVF assignments. During the sharp period of a heart attack interval S - T in these assignments is displaced upwards from an isoelectric line, merging with positive tooth T, there is pathological tooth Q. In I standard, and also in chest assignments interval S - T is usually displaced from top to bottom from an isoelectric line. In podostryj the period is observed the further deepening of tooth Q in II, III, AVF assignments with formation of coronary (negative) tooth T, returning to an isoline of interval S - T. In case of distribution zotsy nekroza on a lateral wall left zheludochka respective alterations are observed sometimes in AVI, I standard and V5-V7 assignments.

Zadnebazalnye myocardium heart attacks to diagnose difficultly enough as at them heart attack signs in 12 classical assignments usually do not come to light. In these cases it is necessary to apply assignments on Nebu, orthogonal, polusagittalnye assignments.

The electrocardiogram-picture of lateral heart attacks of a myocardium depends on a position of heart, prevalence of the centre of defeat. Electrocardiogram changes at this localisation of a heart attack are observed more often in AVI, V5-V6, V8-V9 assignments.