INTRODUCTION The metabolic syndrome and its influence on coronary artery disease development and progression remains in focus of international research debates, while insulin resistance, which represents its core, is the key component of hypertension, dyslipidaemias, glucose intolerance and obesity. OBJECTIVE The aim of this study was to establish relationship between basal glucose and insulin levels, insulin sensitivity and lipid panel and the degree of coronary atherosclerosis in nondiabetic patients. METHODS The coronary angiograms were evaluated for the presence of significant stenosis, insulin sensitivity was assessed using the intravenous glucose tolerance test with a minimal model according to Bergman, while baseline glucose (GO), insulin (10) and lipid panel measurements (TC, HDL, LDL, TG) were taken after a 12-hour fasting. RESULTS The protocol encompassed 40 patients (19 men and 21 women) treated at the Institute for Cardiovascular Diseases of the Clinical Centre of Serbia, Belgrade. All were non-diabetics who were divided into 3 groups based on their angios: Group A (6 patients, 15%, with no significant stenosis), Group B (18 patients, 45%, with a single-vessel disease) and Group C (16 patients, 40%, with multi-vessel disease). Presence of lower insulin sensitivity, higher 10 and TC in the group of patients with a more severe degree of coronary atherosclerosis (insulin sensitivity: F = 4.279, p = 0.023, A vs. C p = 0.012, B vs. C p = 0.038; 10: F = 3.461 p = 0.042, A vs. B p = 0.045, A vs. C p = 0.013; TC: F = 2.572, p = 0.09), while no significant difference was found for GO, LDL, HDL and TG. CONCLUSION Baseline insulinaemia, more precisely, fasting hyperinsulinaemia could be a good predictor of significant coronary atherosclerosis in non-diabetic patients, which enables a more elegant cardiometabolic risk assessment in the setting of everyday clinical practice.

INTRODUCTION Acute heart failure (AHF) is one of the most common diseases in emergency medicine, associated with poor prognosis and high in-hospital and long-term mortality. OBJECTIVE To investigate clinical presentation of patients with de novo AHF and acute worsening of chronic heart failure (CHF) and to identify differences in blood levels of biomarkers and echocardiography findings. METHODS This prospective study comprised 64 consecutive patients being grouped according to the onset of the disease into patients with the de novo AHF (45.3%), and patients with acute worsening of CHF (54.7%). RESULTS Acute congestion (60%) was the most common manifestation of de novo AHF, whereas pulmonary oedema (43.1%) was the most common manifestation of acutely decompensated CHF. Patients with acutely decompensated CHF had significantly higher blood values of creatinine (147.10 vs 113.16 micromol/l; p < 0.05), urea (12.63 vs. 7.82 mmol/l; p < 0.05), BNP (1440.11 vs. 712.24 pg/ml; p < 001) and NTproBNP (9097.00 vs. 2827.70 pg/ml; p < 0.01) on admission, and lower values of M-mode left ventricular ejection fraction (LVEF) during hospitalization (49.44% vs. 42.94%; p < 0.05). The follow-up after one year revealed still significantly higher BNP (365.49 vs. 164.02 pg/ml; p < 0.05) and lower average values of both LVEF in patients with acutely worsened CHF (46.62% vs. 54.41% and 39.52% vs. 47.88%; p < 0.05). CONCLUSION Considering differences in clinical severity on admission, echocardiography and natriuretic peptide values during hospitalization and after one year follow-up, de novo AHF and acutely worsened CHF are two different subgroups of the same syndrome.

INTRODUCTION Large population-based observational trials have shown atrial fibrillation (AF) to be an independent risk factor for increased mortality. OBJECTIVE To examine all-cause mortality and cardiovascular mortality of patients with AF compared to corresponding mortality in general population of Serbia. METHODS This longitudinal observational study included patients with nonvalvular AF as the main indication for in-hospital and/or outpatient treatment at the Clinical Centre of Serbia, Belgrade, during the period 1992-2007, if the latest date of the first diagnosed AF was early January 2003, so that the total follow-up could last at least 5 years (minimum 1 year prospectively), or until death. Patients with acute causes of AF, advanced left ventricular systolic dysfunction (LVEF < or = 25%), preexcitation, known malignancy or any advanced chronic disease and patients with poorly documented history of previous AF were not included. To compare mortality of study population with mortality of general population, we used standardized mortality ratio (SMR) and chi-square test, p < 0.05. RESULTS Out of 1100 patients (389 females, 35.4%), aged 52.7 +/- 12.2 years, with total follow-up 9.94 +/- 6.05 years (prospective 5.75 +/- 4.28, retrospective 4.21 +/- 5.51), 40% had no underlying disease; others most frequently had arterial hypertension. AF was paroxysmal in 665 (60.5%), persistent in 225 (20.5%) and permanent in 210 patients (19.1%). Newly diagnosed AF was documented in 1058 patients (96.2%). Until the end of the study, 85 patients died (7.7%). Cardiovascular death was noted in 62 patients (72.9%), most frequently in form of sudden death (27/85, 31.7%), death from congestive heart failure (18/85, 21.2%) and stroke (14/85, 16.5%). Most patients (67/85, 78.8%) had AF at the time of death. SMR for all-cause mortality was 2.43 (p < 0.0001) and for cardiovascular mortality 3.03 (p < 0.0001). CONCLUSION All-cause mortality and cardiovascular mortality of AF patients are higher than corresponding mortality in general population of Serbia, despite active treatment.

BACKGROUND/AIM Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia in general population. The aim of the study was to compare all-cause mortality and cardiovascular mortality in patients with lone and idiopathic AF to correspondent mortality in general population of Serbia. METHODS A longitudinal observational study included the patients with nonvalvular AF as the main indication for in-hospital and/or outpatient treatment in the Clinical Center of Serbia, during a period 1992-2007, if the latest date of first diagnosed AF was early January 2003; in that way, the total follow-up could last at least 5 years (minimum 1 year prospectively), or until death. Principles of oral anticoagulation, heart rhythm and frequency control during the study period were conducted according to the latest international guidelines for diagnosis and treatment of AF in the study period. Lone and idiopathic AF were defined as AF in patients without any underlying disease, younger than 60 years (lone AF) or older (idiopathic AF). To compare mortality of the study population with mortality of general population we used the standardized mortality ratio (SMR) and chi-square test with p < 0.05 as a level of statistical significance. RESULTS Out of 442 patients with AF and no underlying disease, aged 47 +/- 12.6 years, with mean follow-up of 11.5 +/- 7.2 years, 12 patients (2.7%) died: 7 patients of non-cardiovascular causes and 5 patients (1.1%) of cardiovascular death. When compared to the general population of Serbia, all-cause mortality and cardiovascular mortality in the patients with lone and idiopathic AF were not higher than in general population (p < 0.05). CONCLUSION All-cause mortality and cardiovascular mortality of patients with lone and idiopathic AF are similar to all-cause mortality and cardiovascular mortality in general population of Serbia.