Alfonsas Vainoras

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Ischemic heart disease in European countries over decades causes up to 55% of all cases of sudden death and also has a high rate of mortality, morbidity, and hospital admission. Patients with such chronic diseases also require intensive home care facilities from community nurses. The aim was to establish international multilingual platform for(More)
Developed prototype of network based clinical decision support system consists of database of clinical data and web-based applications for signal and image analysis methods and algorithms. The methods for eye fundus image analysis and ECG P-wave morphology evaluation are the first methods covering two clinical specialties - cardiology and ophthalmology in(More)
UNLABELLED We consider the human body as an adaptable, complex, and dynamic system capable of organizing itself, though there is none, the only one, factor inside the system capable of doing this job. Making use of the computerized ECG analysis system "Kaunas-load" with parallel registration of ECG carrying out body motor characteristics, ABP, or other(More)
A computerized approach of nonlinear dynamics analysis of electrocardiogram (ECG) signals was applied for the detection of coronary artery disease (CAD). The proposed nonlinear dynamics descriptors were derived from 12-lead rest ECG data, and evaluated by originally developed computer software. Fluctuations of potentials of ECG leads that occur during the(More)
Cardiovascular diseases remain the main cause of morbidity and mortality in Lithuania, and early detection of those diseases is one of opportunities to reduce this problem. Usage of information technologies including clinical decision support systems, telemedicine networks and computer analysis of cardiac signals, can serve this purpose. Therefore, the(More)
OBJECTIVE The aim of the study was to determine the influence of early reperfusion on the behavior of JT interval in patients with acute myocardial infarction undergoing percutaneous transluminal coronary angioplasty. MATERIAL AND METHODS Coronary angiography and percutaneous transluminal coronary angioplasty were done for 14 acute myocardial infarction(More)
The new method for assessment of interpersonal and inter parameter concatenation during monitoring of vital signals has been developed. Assessment of inter parameter concatenation permitted to reveal some new features of heart functionality when ECG monitoring was performed during various situations. Proposed method and values of concatenation between(More)
UNLABELLED The aim of this study was to evaluate the cardiovascular functional parameter changes for 30-40 year old women following the aerobics exercise program. The material consisted of 14 women, who participated in aerobics exercise 3 times per week (the average age 33.71+/-1.28 years). The following methods were used in this work: arterial blood(More)
A coupling between geomagnetic activity and the human nervous system's function was identified by virtue of continuous monitoring of heart rate variability (HRV) and the time-varying geomagnetic field over a 31-day period in a group of 10 individuals who went about their normal day-to-day lives. A time series correlation analysis identified a response of(More)
The standard iterative logistic map is extended by replacing the scalar variable by a square matrix of variables. Dynamical properties of such an iterative map are explored in detail when the order of matrices is 2. It is shown that the evolution of the logistic map depends not only on the control parameter but also on the eigenvalues of the matrix of(More)