Liudas Gargasas

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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)
OBJECTIVE The methods of cardioechoscopy and heart catheterization are commonly used for diagnosis of pulmonary arterial hypertension in clinical practice. The aim of this study was to assess the diagnostic efficacy of impedance cardiography as safe, non-invasive, and cheap method for detection of pulmonary arterial hypertension. MATERIAL AND METHODS(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)
If we want correctly specify human physiological state, it is very important to evaluate the changes of main systems participating in different functions. In this work we are analyzing parameters that characterize these systems, their functional relations, counting information dimension and searching for differences in various investigated groups of persons(More)
UNLABELLED THE OBJECTIVE OF THIS STUDY was to investigate the associations among clinical, impedance cardiography, echocardiography, and chest roentgenography data in diagnosis of pulmonary hypertension for patients with cardiovascular and pulmonary diseases. MATERIAL AND METHODS Pulmonary artery pressure was measured by impedance cardiography method in(More)
The paper presents the development results of teleconsultative cardiology systems and their application in rehabilitation and sport medicine. The first teleconsultative cardiology (TELECARD) system was developed for outpatient departments in the city of Kaunas, using Internet links. It was based on the CompCardioSignal terminal. One branch of the TELECARD(More)
BACKGROUND Cardiac output is controlled by the autonomic nervous system by changing the heart rate and/or the contractions of the heart muscle in response to the hemodynamic needs of the whole body. Malfunction of these mechanisms causes the postural orthostatic tachycardia syndrome and/or the chronic fatigue syndrome. Evaluation of functionality and(More)