Left Atrial Structural and Functional Changes in Adults with Congenital Septal Defects and Paroxysmal Atrial Fibrillation.

. To identify the difference between adult patients with septal defects and paroxysmal atrial fibrillation (AF) and patients without a history of arrhythmia using the left atrial (LA) volume and function parameters, to reveal the parameters associated with AF development. .

Wildfire spreading prediction using multimodal data and deep neural network approach.

Predicting wildfire spread behavior is an extremely important task for many countries. On a small scale, it is possible to ensure constant monitoring of the natural landscape through ground means. However, on the scale of large countries, this becomes practically impossible due to remote and vast forest territories.

[A. N. Bakoulev Scientific Center for Cardiovascular Surgery].

Objective: to assess dynamics of diastolic function for detection of development of diastolic dysfunction (DD) and it's causes, to evaluate the effect of DD on prognosis in the postoperative period in patients with acquired heart diseases.

Materials And Methods: We included in this study 112 patients with aortic and mitral valve diseases (90 men, 22 women, median age 51 [35; 57] years). All patients underwent echocardiography (echo), tissue Doppler, speckle tracking echo prior to surgery, in the early postoperative period (8-14 days) and in 12-36 months after surgery.

Experimental Study of Kinematic Activity of Left Ventricular Myocardium.

A method of invasive and non-invasive examination of epicardial motion was tested on domestic pigs (n=15). The invasive study employed a contact kinematic sensor of the epicardial wall motion, which determined the amplitude, velocity, and angular parameters of examined epicardial region. A non-invasive assessment of the epicardial kinematics based on echocardiographic 2D Velocity Vector Imaging and ECG recoding used to determine the heart electrical axis.

Effects of normoxia and hyperoxia on the rate of fatigue development in human respiratory muscles under conditions of intensive resistive load.

We evaluated the rate of fatigue development in the inspiratory muscles of healthy trained individuals during graded bicycle exercise and high resistive resistance to breath under conditions of normoxia and hyperoxia. Fatigue of the respiratory muscles was assessed by tension-time index (TT(m)=P(m)I/P(m)I(maxx)T(I)/T(T)), by the dynamics of changes in the ratio of respiratory volume to inspiratory muscles force, and by ratio of the mean amplitudes of electrical activity in high and low frequency ranges. It was found that the limit of extreme working capacity in humans during heavy resistive load is related to fatigue of the inspiratory muscles developing with the same rate under conditions of normoxia or hyperoxia.

[The value of transesophageal echocardiography for determination of tactics of cardioversion of atrial fibrillation].

Transesophageal echocardiography was carried out in 110 patients before cardioversion of nonvalvular atrial fibrillation which duration exceeded 2 days. Twenty thrombi were found in 18 patients (16.4%).

[Recovery of left atrial function after cardioversion of atrial fibrillation: the role of some clinical and echocardiographical factors].

Sinus rhythm was restored in 102 patients with atrial fibrillation. Cardioversion was spontaneous (n=6), pharmacological (n=35), and electrical - early (n=46) or postponed because of necessity of full anticoagulation (n=15). Irrespective of method of cardioversion all patients had signs of atrial stunning.

[Hygienic problems of industrial animal husbandry].

Basic unfavourable factors of working conditions in modern livestock enterprises as well as industrial livestock complexes effects on environmental state are formulated. The relationships between the main subsystems such as forage production, livestock breeding proper, agriproduct processing, working and social infrastructures of the ++agro-industrial complex are established. It is shown that general and occupational morbidity in cattle-breeders is conditioned by the character of production processes, the technology of manure collection, storing, processing and utilization.