Yazar "Karakas, Mehmet Fatih" seçeneğine göre listele
Listeleniyor 1 - 20 / 22
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Abnormal Left Ventricular Mechanics in isolated Bicuspid Aortic Valve Disease may be independent of aortic distensibility: 2D Strain Imaging Study(I C R Publishers, 2012) Kurt, Mustafa; Tanboga, Ibrahim Halil; Bilen, Emine; Isik, Turgay; Kaya, Ahmet; Karakas, Mehmet Fatih; Buyukkaya, EyupBackground aim of the study: In this study, we hypothesized that subclinical impairment of left ventricular (LV) mechanical function in bicuspid aortic valve (BAV) patients is independent of valvular hemodynamics represented by valvuloarterial impedance and aortic elastic characteristics. Therefore, we aimed to test left ventricular mechanics in cases of isolated non-stenotic BAV with non-dilated aorta. Methods: Thirty-three patients with isolated BAV exhibiting non-dilated aorta, and 25 age-and gender-matched healthy subjects were included in the study. Patients with aortic valve velocity > 1.5 m/s and mild-to-moderate aortic regurgitation or ascending aorta diameter >3.5 cm were excluded from the study. Aortic elasticity parameters and valvulo-arterial impedance were calculated. Strain measurements were reported as the peak longitudinal strain (LS) for four chamber (4C), long axis (LAX) and two chamber (2C) views. Strain rate (Sr) measurements were reported as the peak systolic strain rate (Sr-sm), early diastolic strain rate (Sr-ern) and late diastolic strain rate (Sr-am) for 4C, LAX and 2C views. Results: Systolic and diastolic diameters of the ascending aorta, aortic elastic properties (aortic strain, aortic distensibility, aortic stiffness and aortic elastic modulus), and valvulo-arterial impedances were found to be comparable between the BAV and control groups. BAV group was observed to have statistically significantly lower 4C (18.9 +/- 1.7 vs 17.8 +/- 1.5, p=0.02), LAX (19.7 +/- 1.7 vs 17.7 +/- 1.3, p=0.001) and 2C (20.1 +/- 1.8 vs 17.7 +/- 1.2, p<0.001) peak longitudinal strain values compared with the control group. Moreover, LV-GS values were found to be significantly lower in the BAV group than in the control group (19.6 +/- 1.1 vs 17.7 +/- 0.9, p<0.001). However, there was no statistically significant difference between the groups in terms of Sr-sm, Sr-em ye Sr-am values in the 4C, LAX, and 2C views. Conclusion: BAV might affect LV systolic functions, assessed by 2D strain imaging, in a fashion independent from the valvular dynamics and aortic elasticity. This might show that BAV is not only a valvular disease, but possibly a ventricular disease as well. The Journal of Heart Valve Disease 2012;21:608-614Öğe Assessment of Atrial and Ventricular Mechanics in Patients with Sickle Cell Disease without Overt Pulmonary Hypertension: A Two-Dimensional Deformation Imaging Study(Wiley-Blackwell, 2012) Karakas, Mehmet Fatih; Buyukkaya, Eyup; Kurt, Mustafa; Celik, Murat; Karakas, Esra; Buyukkaya, Sule; Akcay, Adnan Burak[Abstract Not Available]Öğe Assessment of left ventricular dyssynchrony in dipper and non-dipper hypertension(Taylor & Francis Ltd, 2013) Karakas, Mehmet Fatih; Buyukkaya, Eyup; Kurt, Mustafa; Karakas, Esra; Buyukkaya, Sule; Akcay, Adnan Burak; Sen, NihatBackground. Ventricular dyssynchrony is an co-determinant of progression and exacerbation of heart failure (HF). The co-existence of ventricular dyssynchrony with hypertension (HT) and HF were shown, however there is no data regarding the effect of circadian rhythm of blood pressure (BP) on ventricular synchrony. Therefore, we aimed to study the left ventricular synchrony in dipper and non-dipper normotensive and hypertensive participants. Methods. Participants (n = 142) were categorized into four groups as Normotensive-Dipper (NT-D) (n = 40), Normotensive-Non-dipper (NT-ND) (n = 30), Hypertensive-Dipper (HT-D) (n = 38) and Hypertensive-Non-dipper (HT-ND) (n = 34). Left ventricular dyssynchrony was investigated by color-coded tissue Doppler imaging. Results. Non-dippers had higher 24-h and night-time BP both in normotensives and hypertensives. The incidence of ventricular dyssynchrony (a Ts-SD-12 > 34.4 ms) was higher in the hypertensive group (47.2% vs 24.3%, p = 0.005). The frequency of ventricular dyssynchrony was higher in the HT-ND group than the HT-D group (58.8% vs 36.8%, p = 0.05); however, the frequency of ventricular dyssynchrony was similar among the normotensives (26.7% vs 22.5%, p = 0.45). Ts-SD-12 and Ts-12 were higher in NT-ND group than the NT-D group. Conclusions. Non-dipping BP pattern was associated with impaired left ventricular contraction synchrony in both normotensive and hypertensive participants, which may be related with short-and long-term effects of HT on myocardium.Öğe Assessment of left ventricular dyssynchrony in patients with psoriasis(Wiley-Blackwell, 2014) Sen, Bilge Bulbul; Rifaioglu, Emine Nur; Ekiz, Ozlem; Buyukkaya, Eyup; Kurt, Mustafa; Karakas, Mehmet Fatih; Buyukkaya, SuleBackground Psoriasis is an inflammatory disorder, which has been reported to be associated with cardiovascular (CV) risks. Although increased CV risks in psoriasis are well established, there are no data about changes of contraction synchrony in psoriasis. Therefore, we aimed to study the left ventricular (LV) contraction synchrony in patients with psoriasis with narrow QRS and normal ejection fraction. Methods Fifty patients with psoriasis and 50 age- and sex-matched control subjects were included in the study. LV dyssynchrony was investigated by color-coded tissue Doppler imaging. Results In the psoriasis group, the mean high-sensitive C-reactive protein values were significantly higher compared with the controls. Peak A velocity, deceleration time, isovolumetric relaxation time, and E/E' values were higher in the psoriasis group; however, E/A ratio and average Em were higher in the control group. LV systolic dyssynchrony parameters [including standard deviation of Ts of the 12 LV segments (Ts-SD-12), maximal difference in Ts between any two of the 12 LV segments, standard deviation of Ts of the six basal LV segments, and maximal difference in Ts between any two of the six basal LV segments] were found to be higher in the psoriasis group. The patients with ventricular dyssynchrony (a Ts-SD-12 > 34.4 ms) were higher in the psoriasis group than the control group (34% vs. 6%, P < 0.01). Conclusion In patients with psoriasis with normal ejection fractions and narrow QRS, LV systolic dyssynchrony is an early manifestation of heart involvement and may coexist with diastolic dysfunction.Öğe Assessment of subclinical left ventricular dysfunction in patients with psoriasis by speckle tracking echocardiography: A Speckle Tracking Study(Wiley, 2016) Bulbul Sen, Bilge; Ekiz, Ozlem; Rifaioglu, Emine Nur; Buyukkaya, Eyup; Karakas, Mehmet Fatih; Buyukkaya, Sule; Bilen, PerihanBackgroundPsoriasis is a systemic inflammatory disease and is reportedly associated with adverse cardiovascular risks. Left ventricular (LV) function has not been studied comprehensively in psoriasis. ObjectivesThis study was conducted to study LV mechanics in patients with psoriasis by speckle tracking echocardiography. MethodsThe study population consisted of 40 patients with psoriasis and 35 age- and sex-matched control subjects. Two-dimensional echocardiography images were obtained from LV apical four-chamber (4C), long axis (LAX), and two-chamber (2C) views. Peak longitudinal strain and strain rate were obtained from 4C, LAX, and 2C views. Global strain and strain rate were calculated by averaging data for the three apical views. ResultsPatients with psoriasis had significantly lower meanstandard deviation (SD) 4C (17.1 +/- 1.7 vs. 19.2 +/- 2.3; P<0.01), LAX (16.6 +/- 1.5 vs. 19.5 +/- 2.3; P<0.01), and 2C (16.5 +/- 1.5 vs. 19.4 +/- 2.2; P<0.01) peak longitudinal strain values compared with the control group. Moreover, mean +/- SD LV global strain (16.6 +/- 1.5 vs. 19.9 +/- 2.1; P<0.01) and strain rate (1.39 +/- 0.30 vs. 1.51 +/- 0.20; P<0.01) values were found to be significantly lower in the psoriasis group. In a multiple regression model, global strain was independently associated with high-sensitivity C-reactive protein (=0.29, P=0.04), duration of disease (=0.35, P<0.01), ejection fraction (EF) (=0.38, P=0.01), and the ratio of early diastolic mitral inflow velocity to early diastolic annular velocity (E/E ratio) (=0.34, P=0.02). Also, in a multiple regression model, global strain rate was independently associated with duration of disease (=0.36, P<0.01), EF (=0.32, P=0.01), and E/E ratio (=0.35, P<0.01). ConclusionsUsing 2-D strain imaging, we have demonstrated that patients with psoriasis have lower LV functions.Öğe Correlation of Neutrophil to Lymphocyte Ratio With the Presence and Severity of Metabolic Syndrome(Sage Publications Inc, 2014) Buyukkaya, Eyup; Karakas, Mehmet Fatih; Karakas, Esra; Akcay, Adnan Burak; Tanboga, Ibrahim Halil; Kurt, Mustafa; Sen, NihatPurpose: The aim of this study is to investigate the relationship between the criteria comprising metabolic syndrome (MS) and neutrophil-lymphocyte ratio (NLR), a simple and reliable indicator of inflammation. Method: Seventy patients with MS and 71 age- and sex-matched control participants were included. Patients were classified into 3 groups based on the number of MS criteria: group 1 (with 3 criteria), group 2 (with 4 criteria), and group 3 (with 5 criteria). The NLR was calculated from complete blood count. Results: Patients with MS had significantly higher NLR compared to the control group. Moreover, the group 3 patients had higher NLR than those in groups 2 and 1 (P = .008 and P = .078, respectively), whereas there was no difference between the patients meeting 3 and 4 MS criteria (P = .320). Besides, NLR increased as the severity of MS increased (r = .586, P < .001). The cutoff level for NLR with optimal sensitivity and specificity was calculated as 1.84. Serum glucose and high-sensitive C-reactive protein level were found to be independent predictors of an NLR value greater than 1.84. Conclusion: The present study indicated a significant correlation between the criteria of MS and inflammation on the basis of NLR. Furthermore, there an increase in NLR as the severity of MS increases.Öğe Effect of Remote Ischemic Postconditioning on Left Ventricular Mechanics(Wiley, 2015) Nacar, Alper Bugra; Topcu, Selim; Kurt, Mustafa; Tanboga, Ibrahim Halil; Karakas, Mehmet Fatih; Buyukkaya, Eyup; Aksakal, EnbiyaBackgroundRemote ischemic postconditioning (RIPC) decreases infarct size and prevents left ventricular (LV) remodeling in patients with myocardial infarction. However, there is no study that evaluates the effect of RIPC on LV mechanics assessed by speckle tracking echocardiography. Therefore, we aimed to test the effects of RIPC on LV deformation parameters such as strain, strain rate, rotation, and twist in healthy subjects. MethodsThe study group consisted of 22 healthy subjects. To test the effects of RIPC, 3 cycles of reperfusion followed by ischemia (each lasting 10 or 30seconds) were applied immediately after 20minutes of nondominant arm ischemia. Transthoracic echocardiography (TTE) was obtained at baseline and repeated 30minutes after the completion of these cycles. In TTE images, apical 4-3-2 chamber longitudinal strain (LS)/strain rate, basal and apical circumferential strain/strain rate, and rotational parameters, such as basal rotation, apical rotation, and LV twist, were recorded. ResultsApical 4-3-2 chamber LS and apical circumferential strain/strain rate measurements were comparable before and after RIPC, whereas basal circumferential strain was significantly decreased after RIPC (-233.4 vs. -18.9 +/- 6.9, P=0.017). After RIPC, apical rotation was significantly increased (11.6 +/- 3.7 vs. 16.7 +/- 4.0, P<0.001) and basal rotation was significantly decreased (-6.1 +/- 2.1 vs. -4.7 +/- 2.4, P=0.03).Consequently, net LV twist was significantly increased (17.4 +/- 4.5 vs. 21.7 +/- 4.7). ConclusionsWe proposed that RIPC affects the rotational mechanics of the heart rather than longitudinal mechanics. These results might give new insights into understanding the favorable effects of the post- conditioning.Öğe Effect of Serum Gamma-Glutamyl Transferase Levels on Myocardial Perfusion and Long-Term Prognosis After Primary Angioplasty in Patients With Acute ST-Elevation Myocardial Infarction(Bmj Publishing Group, 2012) Ozcan, Firat; Karakas, Mehmet Fatih; Ozlu, Mehmet Fatih; Akcay, Adnan Burak; Buyukkaya, Eyup; Kurt, Mustafa; Erden, GonulBackground: Gamma-glutamyl transferase (GGT) level was found to be elevated in plasma of patients with cardiovascular risk factors. The aim of our study was to assess the relationship between serum GGT levels and the occurrence of no-reflow as well as to evaluate the prognostic value of GGT in ST-segment elevation myocardial infarction (STEMI) population. Methods and Results: One hundred sixty-eight consecutive patients with STEMI who underwent percutaneous coronary intervention (PCI) were enrolled in the study. Patients with STEMI were grouped into tertiles according to their admission serum GGT levels. No-reflow after PCI was assessed both angiographically (thrombolysis in myocardial infarction [TIMI] flow and myocardial blush grade) and electrocardiographically (ST resolution). Gamma-glutamyl transferase levels were higher in patients with STEMI compared to the elective PCI group subjects. Patients with angiographically (TIMI flow <= 2 or TIMI flow 3 with final myocardial bush grade <= 2 after PCI) and electrocardiographically (ST resolution <30%) detected no-reflow were increased in number across the GGT tertiles. In addition, 1-year mortality rates showed a significant increase across the tertile groups (4% vs 11% vs 23%, P<0.01). Multivariable logistic regression analysis revealed that GGT levels on admission were a significant predictor of long-term mortality of myocardial blush grade-detected no-reflow phenomenon. High GGT level on admission was a significant predictor for long-term mortality and major adverse cardiac events. Conclusions: In patients with STEMI undergoing primary PCI, high GGT levels at admission were found to be associated with no-reflow phenomenon and increased long-term mortality.Öğe Erythrocyte sedimentation rate in acute myocardial infarction as a predictor of poor prognosis and impaired reperfusion(Medical Assoc Zenicadoboj Canton, 2012) Ozlu, Mehmet Fatih; Sen, Nihat; Karakas, Mehmet Fatih; Turak, Osman; Ozcan, Firat; Kanat, Selcuk; Aras, DursunAim To investigate whether the elevated erythrocyte sedimentation rate (ESR) is associated with an adverse prognosis in the patients with ST-segment elevation myocardial infarction (STEM I) undergoing primary percutaneous coronary intervention (PCI). Methods It included 140 consecutive patients undergoing primary PCI for acute STEM!, <12 hours after symptom beginning and 50 healthy age and sex matched control subjects. All patients were categorized into two groups defined by the median ESR level on admission. These two groups were compared in terms of myocardial perfusion, and one year outcomes. Results Levels of ESR were higher ill patients with STEM! than in the healthy group. Patients in the elevated ESR group had a higher incidence of impaired angiographic reperfusion compared to patients in the lower ESR group (Mean TIMI frame count; 25.5 +/- 6.5 versus 20.4 +/- 5.2, p<0.01, TMPG 0-2; 55 % versus 29%, p<0.01). In-hospital and one-year mortality rates were significantly higher in patients with higher ESR. In-hospital and one-year MACE rates were significantly greater in elevated ESR group (14%-26), compared to the lower ESR group (4%-13%). Increased ESR levels on admission emerged as independent predictors of long term prognosis. The ROC analysis revealed an optimal cut-point of >= 33 mm/h, detected I year mortality with a negative predictive value of 96%. Conclusion The high admission ESR levels are found to be related with impaired coronary flow in patients undergoing primary PC-I that possibly contribute to poor short- and long-term prognosis. Therefore, admission ESR evaluation may be helpful in identifying patients with a poor prognosis.Öğe Higher Pentraxin-3 Level in Patients with Metabolic Syndrome Reply(Karger, 2013) Karakas, Mehmet Fatih; Buyukkaya, Eyup; Kurt, Mustafa; Karakas, Esra; Buyukkaya, Sule[Abstract Not Available]Öğe Incidence and Predictors of Radial Artery Occlusion Associated Transradial Catheterization(Ivyspring Int Publ, 2013) Tuncez, Abdullah; Kaya, Zeynettin; Aras, Dursun; Yildiz, Abdulkadir; Gul, Enes Elvin; Tekin-alp, Mehmet; Karakas, Mehmet FatihIn this study, we sought to assess the incidence and predictors of radial artery occlusion (RAO), which is a significant complication of transradial cardiac catheterization. We prospectively evaluated the results of 106 patients who underwent coronary angiography and percutaneous coronary intervention (PCI) via the transradial approach (TRA). At the 3rd h of intervention, the radial artery was checked by palpation; color doppler ultrasonography was performed at the 24th h. Fluoroscopy duration, procedure success, and complications of the radial artery were recorded. The procedure was successfully completed in all patients. RAO was detected in eight female and two male patients. In terms of RAO, there was a statistically significant difference between males and females (p=0.019). Other parameters did not show a significant correlation with RAO. Altough did not have any effect on procedural success, eight patients developed transient radial artery spasm. Gender was not associated with radial arterial spasms (p=0.19). TRA in the diagnosis and treatment of coronary artery disease has shown high procedural success and low complication rates; it addition, it presents a low economic burden. It should be used widely and be involved in the routine cardiology residency program.Öğe Left Ventricular Dyssynchrony is an Early Manifestation of Heart involvement in Sickle Cell Anemia(Wiley-Blackwell, 2012) Karakas, Mehmet Fatih; Buyukkaya, Eyup; Kurt, Mustafa; Celik, Murat; Karakas, Esra; Buyukkaya, Sule; Akcay, Adnan Burak[Abstract Not Available]Öğe Mitral Valve Resistance Correlates More Closely with Left Atrial Deformation than with Conventional Indices of Rheumatic Mitral Stenosis(I C R Publishers, 2013) Kurt, Mustafa; Tanboga, Ibrahim Halil; Karakas, Mehmet Fatih; Buyukkaya, Eyup; Nacar, Alper Bugra; Akcay, Adnan Burak; Aksakal, EnbiyaBackground and aim of the study: The relationship between mitral valve (MV) resistance and left atrial (LA) mechanical function is unknown. Hence, the study aim was to investigate the relationship between LA mechanics and MV resistance, compared to conventional indices such as mitral valve area (MVA) and transmitral gradient, in patients with rheumatic mitral stenosis (MS). Methods: The study population consisted of 73 patients with MS and 30 age- and gender-matched controls. MV resistance was calculated and LA strain parameters were assessed from the apical four-chamber view by speckle tracking echocardiography (LA reservoir strain, LA pump strain, LA strain rate (SR)) in all subjects. Results: The MS group has a markedly higher MV resistance (94 +/- 46 versus 67 +/- 22 dynes.s.cm(-5), p = 0.003) and lower LA reservoir strain (24.5 +/- 7.4% versus 36.6 +/- 3.8%, p <0.001), LA pump strain (12.0 +/- 5.0% versus 17.1 +/- 3.4%, p <0.001) and SR (1.23 +/- 0.33 versus 1.4 +/- 0.29, p = 0.017) values compared to controls. Moreover, both LA reservoir strain and LA pump strain correlated with MV resistance more closely than did MVA and transmitral gradients. Multiple linear regression analysis revealed only MV resistance to be an independent predictor of LA reservoir strain, while MV resistance, indexed left atrial volume and mean gradient were independent predictors of LA pump strain. Conclusion: It can be concluded that, in patients with MS, mitral valve resistance was more closely related to LA mechanics measurements than were conventional indices of MS.Öğe Mitral valve resistance correlates more closely with left atrial deformation than with conventional indices of rheumatic mitral stenosis.(2013) Kurt, Mustafa; Tanboga, Ibrahim Halil; Karakas, Mehmet Fatih; Buyukkayal, Eyup; Nacar, Alper Bu?ra; Akcay, Adnan Burak; Aksakal, EnbiyaThe relationship between mitral valve (MV) resistance and left atrial (LA) mechanical function is unknown. Hence, the study aim was to investigate the relationship between LA mechanics and MV resistance, compared to conventional indices such as mitral valve area (MVA) and transmitral gradient, in patients with rheumatic mitral stenosis (MS). The study population consisted of 73 patients with MS and 30 age- and gender-matched controls. MV resistance was calculated and LA strain parameters were assessed from the apical four-chamber view by speckle tracking echocardiography (LA reservoir strain, LA pump strain, LA strain rate (SR)) in all subjects. The MS group has a markedly higher MV resistance (94 +/- 46 versus 67 +/- 22 dynes x s x cm(-5), p = 0.003) and lower LA reservoir strain (24.5 +/- 7.4% versus 36.6 +/- 3.8%, p < 0.001), LA pump strain (12.0 +/- 5.0% versus 17.1 +/- 3.4%, p < 0.001) and SR (1.23 +/- 0.33 versus 1.4 +/- 0.29, p = 0.017) values compared to controls. Moreover, both LA reservoir strain and LA pump strain correlated with MV resistance more closely than did MVA and transmitral gradients. Multiple linear regression analysis revealed only MV resistance to be an independent predictor of LA reservoir strain, while MV resistance, indexed left atrial volume and mean gradient were independent predictors of LA pump strain. It can be concluded that, in patients with MS, mitral valve resistance was more closely related to LA mechanics measurements than were conventional indices of MS.Öğe Relation of Angiographic Thrombus Burden With Electrocardiographic Grade III Ischemia in Patients With ST-Segment Elevation Myocardial Infarction(Sage Publications Inc, 2014) Kurt, Mustafa; Karakas, Mehmet Fatih; Buyukkaya, Eyup; Akcay, Adnan Burak; Sen, NihatBackground: We aimed to investigate the association between electrocardiographic (ECG) grade III ischemia and angiographic thrombus burden in patients with acute ST-segment elevation myocardial infarction (STEMI) who underwent primary percutaneous coronary intervention (pPCI). Methods: The study population consisted of 307 patients with STEMI. Baseline ECGs of the patients were analyzed for grade III ischemia; angiographic thrombus burden was assessed by thrombolysis in myocardial infarction thrombus classification. Results: A total of 108 (35%) patients had low thrombus burden whereas 199 (65%) patients had high thrombus burden. Grade III ischemia was more prevalent in patients with high thrombus burden (25.1% vs 11.1%, P = .004). Only grade III ischemia (odds ratio: 2.59, 95% confidence interval 1.24-5.39, P = .011) and history of coronary artery disease (CAD) were found to be the independent predictors of high thrombus burden. Conclusion: Grade III ischemia on ECG and previous history of CAD were independent predictors of coronary thrombus burden in patients with STEMI who underwent pPCI.Öğe Relation of Fragmented QRS to Tissue Doppler-Derived Parameters in Patients with Familial Mediterranean Fever(Elsevier Science Inc, 2013) Celik, Muhammet Murat; Buyukkaya, Eyup; Ustun, Nilgul; Nacar, Alper Bugra; Kurt, Mustafa; Karakas, Mehmet Fatih; Bilen, Perihan[Abstract Not Available]Öğe Relation of fragmented QRS to tissue Doppler-derived parametersin patients with familial Mediterranean fever(Springer Wien, 2015) Celik, Muhammet Murat; Buyukkaya, Eyup; Ustun, Nilgul; Nacar, Alper Bugra; Kurt, Mustafa; Karakas, Mehmet Fatih; Bilen, PerihanFamilial Mediterranean fever (FMF) may pose a risk for cardiovascular diseases due to continuous inflammatory status observed during the course of the disease. Recently, the presence of fragmented QRS (fQRS) has been recognized as a predictor of myocardial fibrosis. In this study, we aim to investigate the frequency of fQRS and its relation to Doppler-based indices. This study consisted of 80 FMF patients and 30 healthy control subjects. fQRS pattern was defined as the presence of additional R waves or RSR', evidenced by notched R or S wave on electrocardiography (ECG). The patient and the control groups underwent conventional echocardiography and tissue Doppler echocardiography. There was no significant difference between groups regarding age (29 +/- 12 vs 29 +/- 15). FMF patients exhibited a statistically higher frequency of fQRS (% 56 vs % 13) (p < 0.01). E/Em ratio showed a statistically significant increase in the FMF group with fQRS (p < 0.0001), while the mean Em value was markedly lower (p < 0.0001). FMF patients displayed a statistically significant increase in frequency of fQRS. Doppler-derived diastolic index was statistically significantly impaired in FMF patients with fQRS as compared with the patients without fQRS. In conclusion, fQRS might be a new noninvasive marker for cardiac involvement in FMF patients.Öğe The relation of fragmented QRS with tissue Doppler derived parameters in patients with b-thalassaemia major(Canadian Soc Clinical Investigation, 2012) Buyukkaya, Eyup; Karakas, Mehmet Fatih; Kurt, Mustafa; Bilen, Perihan; Yalcin, Fatih; Celik, Murat; Helvaci, RamiPurpose: The most important complication encountered in patients with b-thalassaemia major is degenerative fibrosis developing as a result of iron accumulation in myocardial tissue. Dysfunction pursues this accumulation. Recently, presence of fragmented QRS (fQRS) in ECG has been regarded as a predictor of myocardial fibrosis. We aimed in our study to investigate the frequency with which fQRS develops in patients with b-thalassaemia major and to disclose the correlation between fQRS frequency and Doppler-derived indices. Methods: The patients with b-thalassaemia major (n=66; mean age: 23 +/- 6 years) and healthy controls (n=30; mean age: 23 +/- 4 years) were included. fQRS pattern was described as presence of RSR' manifested as existence of additional R wave and notching in either R or S waves in ECG recordings. 2D, M-mode, conventional Doppler, tissue Doppler echocardiography parameters were assessed. Mean serum ferritin levels over past 5 years were also calculated. Results: When compared to those in control group, fQRS was more frequent in b-thalassaemia major group, indicating statistical significance (p = 0.001). While E/Em and ferritin level exhibited statistically significant increase in thalassaemia patients with fQRS (p < 0.05), the mean Em and Sm values were found to be significantly low (p < 0.05). Conclusions: fQRS was frequently observed in the patients with b-thalassaemia major, which was of statistical significance. Tissue Doppler-derived diastolic and systolic indices in thalassaemia cases with fQRS showed statistically significant impairment compared to those without fQRS. In conclusion, fQRS may represent a novel noninvasive marker for cardiac involvement in patients with b-thalassaemia major.Öğe Relation of Red Cell Distribution Width With CHA2DS2-VASc Score in Patients With Nonvalvular Atrial Fibrillation(Sage Publications Inc, 2014) Kurt, Mustafa; Tanboga, Ibrahim Halil; Buyukkaya, Eyup; Karakas, Mehmet Fatih; Akcay, Adnan Burak; Sen, NihatBackground: Red cell distribution width (RDW) has been shown to be helpful in predicting adverse long-term events in patients with cardiovascular diseases. However, to date, no study has been conducted on the relationship between RDW and thromboembolism risk in atrial fibrillation (AF). Therefore, we aimed to investigate the relationship between RDW and CHA2DS2-VASc score used for the evaluation of thromboembolism risk in patients with AF. Methods: The study population consisted of 320 patients with AF. We calculated CHA2DS2-VASc risk score for each patient and baseline hemoglobin, white blood cell, RDW, mean platelet volume, platelet counts, estimated glomerular filtration rate (eGFR), left ventricular ejection fraction (LVEF), and left atrial volume index (LAVi) were measured. Results: High CHA2DS2-VASc score group had higher RDW, lower LVEF, higher LAVi, and lower eGFR values when compared to the low CHA2DS2-VASc score group. The multivariate logistic regression analysis performed to predict high CHA2DS2-VASc scores revealed that RDW eGFR, LVEF, and LAVi were independent predictors. The area under the receiver-operating characteristic curve of RDW was 0.65 (0.59-0.71, P < .001) to predict high CHA2DS2-VASc score. Conclusion: Our study results indicate that RDW values are significantly correlated with CHA2DS2-VASc score in nonanemic patients with AF, while also being independent predictor of high CHA2DS2-VASc score.Öğe The Relationship between Coronary Collateral Circulation and Neutrophil/Lymphocyte Ratio in Patients with Coronary Chronic Total Occlusion(Karger, 2015) Nacar, Alper Bugra; Erayman, Ali; Kurt, Mustafa; Buyukkaya, Eyup; Karakas, Mehmet Fatih; Akcay, Adnan Burak; Buyukkaya, SuleObjectives: To investigate the relationship between neutrophil/lymphocyte ratio (NLR) and coronary collateral circulation (CCC) in patients with coronary chronic total occlusion. Subjects and Methods: Our study population consisted of 275 consecutive patients with chronic total occlusion. One hundred and thirty-eight patients with chronic total occlusion were included in the study. They were classified into 2 groups as follows: impaired CCC (group 1: Rentrop grades 0-1) and good CCC (group 2: Rentrop grades 2-3). The NLR was calculated from the complete blood count. Results: The NLR values of the patients with impaired CCC (4.5 +/- 0.7) were significantly higher than of those with good CCC (2.7 +/- 0.6, p < 0.001). In the multivariate logistic regression test, NLR (OR 33.36, 95% CI 8.189-135.7, p < 0.001), high-sensitivity C-reactive protein (hs-CRP; OR 2.152, 95% CI 1.226-3.777, p = 0.008), estimated glomerular filtration rate (OR 1.167, 95% CI 1.049-1.298, p = 0.004) and systolic blood pressure (OR 1.068, 95% CI 1.009-1.1310, p = 0.025) were independent predictors of impaired CCC. The NLR value > 3.55 yielded an area under the curve value of 0.957 (95% CI 0.921-0.992, p < 0.001) and demonstrated a sensitivity of 95% and a specificity of 90% for the prediction of CCC. A moderate correlation between NLR and hs-CRP was observed (r = 0.443; p < 0.001). Conclusion: Our findings reveal that NLR correlates with the impaired development of coronary collaterals. (C) 2014 S. Karger AG, Basel
