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BACKGROUND: The aim of this study was to predict significant coronary artery disease (CAD) in patients undergoing coronary angiography. METHODS: In this cross-sectional study, data of 384 patients who underwent angiography during 2015-2017 were reviewed. Electrocardiograms (ECGs) were evaluated in terms of having positive T wave in lead V1 (TV1) described as T wave with amplitude of more than 0.15 mV and angiography records were assessed for presence of significant CAD defined as presence of ≥ 70% internal diameter stenosis in at least one major epicardial coronary artery or more than 50% stenosis in left main artery (LMA). RESULTS: Out of 384 patients who participated in this study with mean age of 63.6 ± 10.2 years (40-89 years), 71.6% showed positive TV1 and significant CAD simultaneously and left anterior descending artery (LAD) and left circumflex artery (LCX) lesions were more frequently reported in coronary angiography. Based on chi-square test, the prevalence of significant CAD was obviously more in those with positive TV1 as compared to those without this finding [odds ratio (OR) = 2.74, 95% confidence interval (CI): 1.80-4.19, P < 0.001]. Mann-Whitney test showed significant difference in number of coronary arteries involved in CAD between presence of positive and negative T wave in lead V1 (P < 0.001). Great number of patients with significant CAD had remarkably higher T wave amplitude in lead V1 in comparison to lead V6 (OR = 6.22, 95% CI: 3.14-12.30, P < 0.001). CONCLUSION: Positive TV1 and TV1 > TV6 pattern can be considered as a predictor for significant CAD in patients with otherwise normal ECG. [ABSTRACT FROM AUTHOR]

Background: Contrast induced nephropathy (CIN) is one of the most common complications after radiographic procedures using intravascular radiocontrast media. The aim of the current study was to assess the effect of atorvastatin on prevention of CIN in patients undergoing coronary angiography. Materials and Methods: In a clinical trial study, 200 patients referred for angiography were randomly divided into two groups of using 80 mg atorvastatin and placebo before the procedure. Furthermore, 100 patients who were under chronic treatment of statins were included as the third group. Serum creatinine (Scr) levels before and after the procedure were evaluated and incidence of CIN (post-procedural Scr of >0.5 mg/dl or >25% from baseline) was assessed. Results: Mean age of the participants was 60.06 ± 0.69 years and 276 (92%) were male. There were no significant differences between group with respect to age and gender. In pre-operation atorvastatin, placebo and long term statin groups, the incidence of CIN was 1%, 2% and 1%, and mean changes of Glomerular filtration rate (GFR) was 3.68 ± 1.32, −0.77 ± 1.21 and 1.37 ± 0.86; and mean changes of creatinine (Cr) was −0.05 ± 0.02, 0.02 ± 0.02 and −0.01 ± 0.01 respectively. (P = 0.776, 0.026 and 0.041 respectively). In pre-operation atorvastatin group, Cr decreased, and GFR increased significantly (P = 0.019 and 0.007 respectively). Conclusion: pre-operation short term high dose atorvastatin use was associated with a significant decrease in serum Cr level and increase in GFR after angiography. [ABSTRACT FROM AUTHOR]

BACKGROUND: Iron is essential for many physiological processes; whereas, iron overload has been known as a risk factor in progression of atherosclerosis. The aim of this study was to investigate the importance of serum ferritin levels, which are known as an indicator of body iron stored in the incidence of coronary artery disease (CAD). METHODS: In a case-control study, we evaluated 432 eligible men who underwent coronary angiography at Chamran Cardiology Hospital, Isfahan, Iran. They were separated into two groups of case (with CAD) and control (without CAD). All subjects had given written informed consents. Then, the blood samples were taken after 12-14 hours of fast by a biologist for measuring cardiovascular risk factors and body iron stores, including serum ferritin, serum iron, and total iron binding capacity (TIBC). For statistical analyses, chi-square test, Student's t-test, one-way ANOVA, and the logistic regression were used. RESULTS: In the present study, 212 participants with CAD in the case group and 220 participants free of CAD in the control group were included in the analysis. At baseline, there were significant differences in serum ferritin (P < 0.001) and other cardiovascular risk factors between the two groups. Moreover, when other risk factors of CVD were included in the model, serum ferritin [Odd Ratio (OR) = 1.006, 95% confidence interval (CI) 1.00-1.01, P = 0.045] and serum ferritin ≥ 200 (OR = 4.49, 95% CI 1.72-11.70, P < 0.001) were associated with CAD. CONCLUSION: High iron store, as assessed by serum ferritin, was associated with the increased risk of CAD. Furthermore, it was a strong and independent risk factor in the incident of atherosclerosis in the Iranian male population. [ABSTRACT FROM AUTHOR]

Objective: To investigate the association between obesity indices, abdominal fat distribution, and lipid profile in patients with stable angina (SA). Methods: Body weight, height, waist circumference (WC), body mass index (BMI), and waist/height ratio (WHtR) of 123 patients with SA who underwent coronary angiography were measured. Fasting blood samples were taken to measure the levels of fasting blood sugar (FBS), total cholesterol (TC), low- and high-density lipoprotein cholesterol (LDL-C, HDL-C), apolipoproteins A and B (apo A and apo B), and triglycerides (TG). According to angiography reports, the participants were divided into patients with or without coronary heart disease (CHD). All patients underwent an abdominal computerized tomography (CT) scan to measure the visceral, superficial, and deep subcutaneous fat. Results: The mean ages of the patients with CHD (n = 73) and without CHD (n = 50) were 50.5 ± 7.6 and 53.7 ± 7.6 years, respectively (P = 0.03). The patients with CHD had significantly higher levels of TC, TG, and superficial subcutaneous fat, while the patients without CHD had higher levels of apo A (P ≤ 0.05). Multivariate analyses showed a significant association of visceral fat with TC, LDL-C, TG, and apo B, in the patients without CHD, while significant inverse associations were found between WC and HDL-C, WHtR, and apo A as well as visceral fat and LDL-C in the patients with CHD. Conclusions: Among anthropometries and imaging indices of obesity, WC and WHtR have shown better association between central obesity with dyslipidemia in the patients with CHD, while CT-measured visceral adipose tissue area was the best correlate of dyslipidemia in the patients without CHD. [ABSTRACT FROM AUTHOR]