[Professional and organizational guidelines of cardiac rehabilitation (conditions and requirements). Hungarian College of Cardiology and Rehabilitation].
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Adult↗
Biomedical subjects
I Berényi
Publications and source records attributed to I Berényi.
Oxygen deficit during exercise testing.
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Anaerobic Threshold↗
99-m technetium (Dupont Cardiolite) investigations in postinfarction patients with Holter-checked silent ischaemia.
Sixteen middle-aged, normotensive, slightly overweight male patients with previous myocardial infarction were studied during Holter-checked silent myocardial ischaemia. As reference, stress and late 201-T1 scintigraphy served for comparison with Cardiolite-MIBI silent ischaemic perfusion scan, both carried out in planar mode. The circumferential profiles differed in 9 cases, on region of interest basis the segment number difference was 10, but the late distribution segment number was near to both ischaemic numbers. The quantitative scores were distinctive (ratio 133-128/103) indicating the silent ischaemia appeared in the peri-infarct area. The silent ischaemic MIBI and stress 201-T1 ischaemic score difference was reduced by means of repeated SPECT investigation. With gated radionuclide ventriculography there was -4.3% difference between the left ventricular ejection fractions, measured with first pass MIBI technique during silent ischaemia and afterwards in basal state. The impairment of the left ventricular function was reflected on the stroke pattern of our Holter-based radiocyclogram, as well. Taking the 43.7-48.0 = -4.3% "ischaemic shift" into consideration it was a close correlation (r = 0.90) between the two kinds of ejection fraction determination. The major rhythm failures (occurring during the 24 h Holter monitoring) decreased to a higher degree the left ventricular ejection fraction than silent ischaemia or silent ischaemia and minor rhythm failure together (38-42-50%).
Coronary Disease↗
[Determination of the severity of coronary disease by the exercise ECG test].
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Coronary Disease↗
Quantitative evaluation of exercise-induced ST-segment depression for estimation of degree of coronary artery disease.
Comparative analysis of coronary arteriography and exercise ECG recordings of 33 patients with ischaemic heart disease is presented. Linear regression was found between the increase of heart rate (HR) as well as increase of systolic blood pressure-heart rate product (SBP X HR) and the level of ST-segment depression developing during exercise. A significant correlation was established between the slope of the regression line (i.e. 'm' coefficient of y = mx + b) expressing the rate of change of ST-segment depression and the degree of coronary artery disease confirmed by arteriography. The average value of 'm' coefficients differed significantly according to the number of diseased vessels (P less than 0.01-0.001). The ratio of maximal ST depression and maximal HR (STmax/HRmax) measured at the end of the exercise indicated reliably the severity of coronary artery disease and is suggested for everyday practice.
Adult↗
[Comparison of institutional and ambulatory methods of rehabilitation in myocardial infarct].
The authors compared the results of their own methods of rehabilitation after myocardial infarction, applied in two groups: 92 patients who were trained in the institute, and in other 92 patients who performed their rehabilitation training for some weeks at home. In all patients the working capacity (bicycle ergometry), psychosocial state and rate of return into professional activity over one year after infarction were examined. No statistically significant differences in the results obtained in both groups were found except for the working capacity, the improvement of which was significantly more pronounced in patients who performed their rehabilitation training in the institute.
Adaptation, Psychological↗
[Somatic risk factors and the mental state of patients after myocardial infarct].
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Adult↗
Relative cardiac efficiency and ST depression during progressive exercise test.
The ratio of calculated myocardial oxygen consumption to estimated oxygen uptake of the body of (MVO2/VO2) provides insight into relative cardiac efficiency. The authors investigated the relation of ST depression to the calculated MVO2/VO2 ratio during a progressive bicycle exercise test in 23 patients with good chronotropic capacity after acute myocardial infarction. ST depression of 0.2 mV or more was required at the highest exercise level. In each case, the lowest MVO2/VO2 value was, on an average, at 60.5% (SD 12.7) of the maximally tolerated work load. The magnitude (mV) and the velocity (micro V/min of ST depression measured at the exercise level after the lowest MVO2/VO2 value were significantly higher than the same parameters at the exercise level corresponding to the lowest MVO2/VO/ value. The authors believe that the lowest value of the calculated MVO2/V.O2 ratio can be regarded as a critical point which is followed by the acceleration of ST depression.
Adult↗