Sleep Apnea and Atrial Fibrillation: Clinical Features and Screening Diagnostic Options.

Introduction: Obstructive sleep apnea (OSA) is associated with an increased risk of hypertension, coronary artery disease, heart failure (HF), and atrial fibrillation (AF).

Materials And Methods: A total of 179 patients aged 34-81 years were included in the study. The median age was 63 years (interquartile range: 56-69 years).

Electrocardiogram QRS Complex Duration as a Predictor of Hospital Prognosis in Patients With COVID-19.

Aim      To determine the effect of major electrocardiographic (ECG) parameters on the prognosis of patients with COVID-19.Material and methods  One of systemic manifestations of COVID-19 is heart injury. ECG is the most simple and available method for diagnosing the heart injury, which influences the therapeutic approach.

The value of indicators characterizing the state of the cardiovascular system in assessing the hospital prognosis of COVID-19 patients.

Background     Heart damage is one of complications of the novel coronavirus infection. Searching for available predictors for in-hospital death and survival that determine the tactic of managing patients with COVID-19, is a challenge of the present time.Aim      To determine the role echocardiographic (EchoCG) parameters in evaluation of the in-hospital prognosis for patients with the novel coronavirus infection, COVID-19.

Stress load and neurodegeneration after gastrostomy tube placement in amyotrophic lateral sclerosis patients.

Dysphagia and progressive swallowing problems due to motoneuron death is one of amyotrophic lateral sclerosis (ALS) symptoms. Malnutrition and body weight loss result in immunological disturbances, fatigability and increase risk of secondary complications in ALS patients, percutaneous endoscopic gastrostomy tube (PEG) placement representing a well-recognized method for malnutrition correction and potentially increasing life expectancy. However, despite nutritional correction, occasional rapid neurological deterioration may develop after PEG placement.

[Left ventricular diastolic dysfunction in endovascular treatment of atrial fibrillation in patients with preserved ejection fraction].

Aim: To study prevalence of left ventricular diastolic dysfunction (LVDD) and to evaluate the effect of pulmonary vein catheter isolation on left ventricular (LV) diastolic function in patients with paroxysmal and persistent forms of atrial fibrillation (AF).

Materials And Methods: 109 patients with paroxysmal (n=90; 82.6 %) and persistent (n=19; 17.