ASSESSMENT OF CORONARY COLLATERAL CIRCULATION PREDICTORS AMONG PATIENTS WITH ACUTE CORONARY SYNDROME IN POPULATION GEORGIA

Coronary collateral circulation (CCC) has been shown to have a prognostic role in acute myocardial infarction (MI). We aimed to identify factors associated with CCC development in patients with acute myocardial ischemia. In the present analysis, 673 consecutive patients aged 27 - 94 years (64.7±11.48) with acute coronary syndrome (ACS), who underwent coronary angiography within the first 24 hours after symptom onset were included. Baseline data, including sex, age, cardiovascular risk factors, medication, antecedent angina, prior coronary revascularization, EF%, blood pressure levels were obtained from patient medical records. The study individuals were divided into two groups: patients with Rentrop grade 0 to 1 were classified as the poor collateral group (456 patients), and the patients with grade 2 to 3 - as the good collateral group (217 patients). Prevalence of good collaterals of 32% was found. Odds of good collateral circulation increases with higher eosinophil count - OR=17.36 (95% CI: 3.25-92.86); history of MI (OR=1.76; 95% CI:1.13-2.75); multivessel disease - OR=9.78 (95% CI: 5.65-16.96); culprit vessel stenosis - OR=3.91 (95% CI: 2.35-6.52); presence of angina pectoris > 5 years - OR=5.55 (95% CI:2.66-11.57) and decreases with high N/L- OR=0.37 (95% CI:0.31-0.45) and male gender - OR=0.44 (95% CI:0.29-0.67). High N/L is a predictor of poor collateral circulation, with 68.4 sensitivity and 72.8% specificity (cutoff: 2.73*109). Relative chance of good collateral circulation increases with the higher number of eosinophils, presence of angina pectoris with duration of more than 5 years, history of past myocardial infarction, culprit vessel stenosis, multivessel disease, and reduces if patient is male and has high N/L ratio. Peripheral blood parameters may serve as an additional simple risk assessment tool in ACS patients.

DIFFERENCES IN ECG CHARACTERISTICS AND CO-MORBIDITIES AMONG PATIENTS WHO UNDERWENT ELECTIVE SURGICAL REPAIR

The aim of the study was to assess differences in ECG features and prevalence of comorbidies between two groups of patiens: with Abdominal Aortic Aneurism (AAA) and Aorto-Iliac Occlusive Desieses-Lerish Syndrome (LS). Data was collected for all consecutive adult patients who underwent elective surgical repair of AAA (fusiform aneurysm) or LS at "The Center of Vascular and Heart Diseases" (Tbilisi, Georgia) between 2010 and 2014. We studied a prevalence of Arterial Hypertension (AHT); Diabetes mellitus (DM); Renal Failure (RF),Peripheral Artery Disease (PAD), Coronary Artery Disease (CAD) and rate of coronary revascularization in these patients; We also, investigate some of the electrocariographic characteristics: Corrected QT interval(QTC),QT dispersion(QTD). The majority of patients were mail (92% in both groups). Prevalence rate of CAD didn't differ significantly between groups with LS and AAA (37% and 39%P=0.7000 respectively). Rate of revascularization was (7% and 6% P=0.577 respectively). Prevalence rate of DM was higher in patients with LS compared with AAA (27%and 8%P=0.0000 respectively); PAD was more prevalent in LS group (98% and 48% P=0.0000 respectively). RF was less prevalent in patients with LS as compared with AAA (51% and 64%P=0.0200). Prevalence rate of AHT was significantly low in LS than in AAA (49% and 65%P=0.0000 respectively). A prevalence rate of increased QTd (>0.07ms) was high in LS group but the difference between these two groups was not statistically significant (16% and 9% P=0.1563 respectively). Absolute number of prolonged QTd was high in LS group in comparison with AAA and this difference was statistically significant (0.04±0.026 and 0.02±0.028 P=0.0092 respectively).QTC remained in normal range in both groups. Rates of CAD and coronary revascularization did not differ between patients with AAA and LS. The high incidence of DM and PAD was found in patients with LS as well as high HR and prolonged QTd. Prevalence Rate of AHT, RF was higher in patients with AAA as compared with LS group. These findings indicates: a)Different composition of risk factors in two groups. However, both groups of patients are at increased risk of development of coronary events and this circumstance may be considered as a predictor of worse prognosis. b) High incidence of renal failure in AAA group may contribute a progression of renal dysfunction in this patients during /after surgery.c) A prolonged QTd was high in LS group which may contribute heightened risk of fatal arrhythmias in this patients. Further studies are needed for evaluation a prevalence rate of prolonged QTd in the large population.

Assessment of the value of pre-catheterization in diagnosis of st-segment elevation myocardial infarction and tako-tsubo cardiomyopathy

The aim of our study was to assess if the analysis of precatheterisation initial 12-lead ECG could reliably differentiate between Taco-Tsubo Cardiomyopathy (TTC) and ST-segment elevation myocardial infarction (STEMI), two conditions with a similar clinical presentation. Of the 320 patients with suspected STEMI who underwent angiography over a 2-year period we identified 23 (7.2%) patients without significant coronary artery disease. 6 (26.1%) of whom met the diagnostic criteria for Tako-Tsubo Cardiomyopathy (6 females, median age 70 (65-83) years). TTC patients were compared with the remaining 297 patients with angiographic evidence of CAD. There was no significant difference in regard with heart rate, PR interval, QRS duration, and corrected QT interval, but QT dispersion was less in TTC patients compared to STEMI group (34.1+/-9.7 vs. 43.9+/-16.2 p=0.046). Distribution of ST-segment elevation was similar in both groups, but the sum of the level of ST-segment elevation was significantly smaller (0,6+/-0.14 [0,4-0,8] mV vs. 0.95+/-0.17 [0,8-1,4] mV; p =0.002 ) and concurrent ST-segment depression was rare finding in TTC patients (16.6% vs. 65.7 % p=0.022). Careful analysis of initial ECG in combination with complex analysis of initial cardiac markers and presence of preceding stressful event could be informative tool in differentiating of TTC from STEMI.

Exercise induced QT dispersion changes in middle-aged veteran elite athletes

Present work was aimed to study QT dispersion changes during exercise and relation of it with LV myocardium mass in veteran elite athletes. 31 veteran athletes aged 30-50 years and 31 age-matched healthy controls were studied. In all of them QT dispersion (QTd) at rest and during exercise test was evaluated. LV mass by ultrasound method was measured.

INCLUSION CRITERIA

at least 10 years of competitive sports activity and 5 years after active sports cessation, absence of cardiovascular diseases. Differences in QTd at rest and exercise peak among athletes and control groups weren't statistically significant p<0, 05. However, in part of athletes (19%) QTd increased at peak of exercise (marker of pathological hypertrophy), in contrast of controls. Athletes group was divided in two subgroups: athletes with increased QTd at exercise peak (group A) and without of it (gourd B). LV mass index in group A (142,1; SD -4,5; 95% CI 139.31-144.69) was significantly higher, than in control group (106,5; SD -5,56; 95% CI 104.52-107.48) P<0,05. LV mass correlated with QT dispersion changes during exercise in veteran athletes (r =0,87). In former athletes increased QT dispersion during exercise was associated with LV mass enhancement. It is suggested that these findings are caused by incomplete regression of athletic heart hypertrophy or residual hypertrophy and it may not be pure physiological phenomenon.