The examination indicated that abnormal Q and QS waves recorded along the azes Z and Y in the adjusted lead system far clearly reflected a predominant site of suspected focal and scarring lestoh in hypertrophic cardiomyopathy (HCM) as in coronary heart disease (CHD) (the anterior site in the Z lead and inferior one, in the Y lead), however, the difference in their quantitative characteristics do not fulfil the goals of the electrocardiographic differentiation between HCM and CHD. To differentiate HCM and CHD in the presence of Q and QS waves, a characteristic complex of signs was identified: elevated waves Rx (greater than or equal to 17.5 mm), Sy (greater than or equal to 7.3 mm) of the total value, sigma Rxyz + sigma Sxyz (greater than or equal to 48.3 mm) at the anterior site of "scarring" myocardial lesion and increased waves Sz (greater than or equal to 20.4 mm), sigma Sxyz (greater than or equal to 21.4 mm) at the inferior site. Only "indirect" signs remained on VECG in the presence of scarring myocardial lesion concurrent with arterial hypertension in CHD patients.

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