Robert Ryczek

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BACKGROUND It is uncertain whether external electrical cardioversion (CV) of atrial fibrillation (AF) can cause myocardial injury identifiable by troponin I (cTnI). AIM To examine whether external CV of AF can cause cTnI rise as measured with high-sensitivity assay, and to identify factors determining this elevation. METHODS Patients with non-valvular(More)
BACKGROUND The evaluation of the left ventricular (LV) function is one of the most important elements of diagnosis in patients with cardiovascular (CV) diseases. A low LV ejection fraction (LVEF) is a strong and independent predictor of CV events. Traditionally, echocardiography characterises the LV systolic function by the estimation of LVEF with use of(More)
BACKGROUND Exercise oscillatory ventilation (EOV) is a common pattern of breathing in heart failure (HF) patients, and indicates a poor prognosis. AIM To investigate the effects of adaptive servoventilation (ASV) on ventilatory response during exercise. METHODS We studied 39 HF patients with left ventricular ejection fraction (LVEF) £ 45.(More)
An asymptomatic Caucasian male patient underwent coronary artery disease diagnostics. Standard exercise treadmill test was inconclusive, and Holter ECG study didn't show any significant abnormalities. Considering the high risk of ischemic heart disease nuclear exercise stress test was performed,which revealed ST-segment elevation in the recovery phase of(More)
BACKGROUND Microvolt T-wave alternans (MTWA) is a promising method for noninvasive assessment of arrhythmic risk. Recent studies have shown good immediate reproducibility of T-wave alternans. Little is known about it during the long term. The aim of the study was to prospectively evaluate the long-term reproducibility of MTWA in a group of patients after(More)
BACKGROUND Cardiac dysfunction can modify renal perfusion, which is crucial to maintain sufficient kidney tissue oxygenation. Renal cortex perfusion assessed by dynamic ultrasound method is related both to renal function and cardiac hemodynamics. The aim of the study was to test the hypothesis that Renal Perfusion Index (RPI) can more closely reflect(More)
Pulmonary arterial hypertension (PAH) belongs to the group of rare diseases and the morbidity rate is 15 to 50 people per million per year. Before the era of specific treatment of PAH, the prognosis was poor. The average life expectancy of the patients was 2.8 years. However, in the last years there has been a breakthrough in treating the patients with PAH.(More)
Recent years are the time of dynamic development of pulmonary arterial pressure pharmacotherapy. By introducing the goal oriented therapy the survival in this group of patients has significantly increased. Apart from the pharmacotherapy used according to the ESC guidelines, new attempts of interventional treatment based on denervation of pulmonary artery(More)