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    Arterial Stiffness and Carotid Intima-Media Thickness in Diabetic Peripheral Neuropathy
    (INT SCIENTIFIC LITERATURE, INC, 2014) Avci, Ahmet; Demir, Kenan; Kaya, Zeynettin; Marakoglu, Kamile; Ceylan, Esra; Ekmekci, Ahmet Hakan; Yilmaz, Ahmet
    Background: We investigated the relationship between peripheral neuropathy and parameters of arterial stiffness and carotid intima media thickness (CIMT) in patients with type 2 diabetes mellitus (T2DM). Material/Methods: The study included 161 patients (80 females and 81 males), 69 of whom had peripheral neuropathy. All patients underwent 24-h blood pressure monitoring, and arterial stiffness parameters were measured. The CIMT was measured using B- mode ultrasonography and patients also underwent transthoracic echocardiographic examination. Results: Patients with peripheral neuropathy, compared with those without it, were older (54.68 +/- 8.35 years vs. 51.04 +/- 7.89 years; p= 0.005) and had T2DM for longer periods (60 vs. 36 months; p= 0.004). Glycated hemoglobin (HbA1c) values (8.55 +/- 1.85 mg/dL vs. 7.30 +/- 1.51 mg/dL; p<0.001), pulse wave velocity (PWV) (7.74 +/- 1.14 m/s vs. 7.15 +/- 1.10 m/s; p= 0.001), CIMT (anterior 0.74 +/- 0.15 mm vs. 0.67 +/- 0.13 mm; p= 0.01), and left ventricular mass (LVM) index (98.68 +/- 26.28 g/m(2) vs. 89.71 +/- 19.70 g/m(2); p= 0.02) were all significantly increased in the group with peripheral neuropathy compared to the group without peripheral neuropathy. We determined that duration of diabetes, HbA1c, and LVM index were predictors of peripheral neuropathy. Conclusions: A significant relationship was found between diabetic neuropathy and increased PWV, a parameter of arterial stiffness, as well as CIMT, a marker of systemic atherosclerosis. Diabetic peripheral neuropathy may be a determinant of subclinical atherosclerosis in T2DM.
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    Assessment of atrial electromechanical delay and P-wave dispersion in patients with type 2 diabetes mellitus
    (ELSEVIER, 2016) Demir, Kenan; Avci, Ahmet; Kaya, Zeynettin; Marakoglu, Kamile; Ceylan, Esra; Yilmaz, Ahmet; Ersecgin, Ahmet
    Objectives: Diabetes mellitus is an independent and strong risk factor for development of atrial fibrillation (AF). Electrophysiologic and electromechanical abnormalities are associated with a higher risk of AF. In this study we aimed to determine the correlation of atrial conduction abnormalities between the surface electrocardiographic and tissue Doppler echocardiographic measurements in type 2 diabetes mellitus (T2DM) patients. Methods: A total of 88 consecutive T2DM patients and 49 age-, gender-, and body mass index-matched healthy volunteers were included in the present study. Baseline characteristics were recorded and 24 hour ambulatory blood pressure monitoring, transthoracic echocardiography, and 12-lead surface electrocardiography were performed for all study participants. Atrial electromechanical delay (EMD) intervals were measured. Results: Maximum P-wave duration and P-wave dispersion (Pd) were significantly higher in patients with T2DM (105.7 +/- 10.2 ms vs. 102.2 +/- 7.5 ms, p = 0.02; 40.6 +/- 7.6 ms vs. 33.6 +/- 5.9 ms, p < 0.001, respectively). Interatrial, intraatrial, and intraleft atrial EMD were significantly higher in the T2DM patients when compared with the controls (16.5 +/- 7.8 ms vs.11.2 +/- 4.4 ms, p < 0.001; 9.0 +/- 7.3 ms vs. 6.0 +/- 3.8 ms, p = 0.002, and 7.4 +/- 5.2 ms vs. 5.1 +/- 3.2 ms, p = 0.002 respectively). Correlation analysis showed a positive correlation between interatrial EMD and Pd (r = 0.429, p < 0.001) and left atrial volume (r = 0.428,p < 0.001). Conclusions: In this study, there was significant EMD and Pd in patients with T2DM as compared with healthy volunteers. Additionally, interatrial EMD was correlated with Pd and left atrial volume index. (C) 2015 Japanese College of Cardiology. Published by Elsevier Ltd. All rights reserved.