[P-terminal index based on the additionally amplified ECG in healthy persons and ischemic heart disease patients].

To study the P terminal index a method of additionally fortified ECG (I mV-50 mm) has been used permitting more precise assessment of the low amplitude elements of the ECG curve. The values of P terminal index in the lead V1 ECG in the healthy individuals and the limits of its changes in the patients with ischaemic heart disease have been determined. The comparison of the parameters of the P terminal index in the lead V1 ECG and the degree of insufficiency of the left ventricle confirms the link between the increase of this index and the presence of congestion in the lungs.