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  • Title: [Dynamics of left ventricular contraction in patients with myocardial infarction after hospital rehabilitation, assessed by Doppler echocardiography].
    Author: Wysokiński A, Markiewicz M, Trojnar R, Rymar B.
    Journal: Wiad Lek; ; 42(22-24):1097-103. PubMed ID: 2637546.
    Abstract:
    The reported study was carried out in 30 men with myocardial infarction. In all cases after completion of rehabilitation treatment in hospital the exercise test was done on cycle ergometer and echocardiographic examination was performed (TM, 2D and Doppler). The patients were divided into two groups depending on the size of the necrotic zone (limited or extensive infarction in ECG) and physical fitness (low and high) determined by means of the PCW-170 test. In such formed groups certain left-ventricular contraction parameters (PEP, PEPI, LVET, LVETI, PEP/LVET, CO) were calculated by means of Doppler echocardiography. It was found that after hospital rehabilitation the patients with extensive myocardial infarction had significantly lower values of LVETI, SV, CO and higher PEP/LVET value in relation to patients with limited infraction zone, which suggested worse left-ventricular contraction. Moreover, patients with lower physical fitness had worse left ventricular contraction activity (significantly lower values of LVET, LVETI, SV, CO, and higher value of PEP/LVET) than patients with better fitness. Thus the indices describing the left-ventricular contraction activity calculated by means of Doppler echocardiography correlated well with fitness and infraction zone size. The method of Doppler echocardiography is useful for determination of left-ventricular contraction activity after myocardial infraction and for programming of exercises during rehabilitation treatment in hospital.
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