the Further dynamics of an electrocardiogram. Absence of positive dynamics

you in section: the Further dynamics of an electrocardiogram

During the first hours developments of a heart attack of a myocardium on an electrocardiogram appears high, ' huge ' the peaked tooth T specifying on subendokardialnuju an ischemia is more often; pathological tooth Q during this period usually is absent. In the next hours the first days bow-shaped displacement of interval S - T upwards from the isoelectric line, merging with positive tooth T (a monophase curve) is observed; during this period probably occurrence of pathological tooth Q.

From second days of disease (sometimes through 12 ch after its beginning) deepening of tooth Q with gradual returning of segment S is observed: - T to an isoelectric line and formation of a negative tooth of T.Izmenenija of segment S - T and tooth T have usually diskordantnyj character. At transmuralnyh heart attacks zheludochkovyj complex QRS is registered in chest assignments in the form of tooth QS.

The Further dynamics of an electrocardiogram depends on development degree kollateralnogo blood circulations, speeds reparativnyh processes in a myocardium. In the absence of complications from 4-7th week of disease there comes the scarring period, lasting many months and even years. on an electrocardiogram during this period the gradual increase in amplitude of tooth R, reduction of negative teeth T and Q, in some cases their full normalisation is marked. At some patients pathological tooth Q and negative tooth T can remain many years. Absence of positive dynamics of an electrocardiogram (long ' fallen asleep ' lifting of interval S - T, pathological tooth QS, etc.) is the basis for the assumption of development heart aneurysms.