Vedat Davutoglu

University of Gaziantep, Ayıntap, Gaziantep, Turkey

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Publications (212)420.51 Total impact

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    ABSTRACT: Objective: It was the aim of this study to investigate the effects of the right lateral decubitus, left lateral decubitus and supine lying position on P-wave dispersion (PWD) in patients with heart failure (HF). Subjects and Methods: Seventeen patients with HF whose ejection fraction was <35% were included in the study. Right lateral decubitus, left lateral decubitus and supine electrocardiogram (ECG) recordings were obtained. The recordings for each of the three positions were taken after the patients had maintained each position for 30 min to ensure a stabilized hemodynamic position. For the baseline recording, in supine position, there was no 30-min waiting period before the ECG. Results: After the right lateral decubitus position, there was a statistically significant reduction in the longest P-wave duration (100.0 ± 14.5 and 84.7 ± 16.2 ms; p = 0.001) and a significant decrease in PWD (41.7 ± 8.0 and 24.1 ± 7.1 ms; p < 0.0001). After the left lateral decubitus position, there was no significant change between the baseline PWD values (41.7 ± 8.0 and 40.2 ± 9.7 ms; p = 0.606). After the supine position, there was no significant change between the baseline PWD values (41.7 ± 8.0 and 39.7 ± 9.4 ms; p = 0.427). Conclusion: Our study revealed that patients' PWDs and maximum P-wave durations were lower in the right lateral decubitus lying position than in other positions. The clinical implication of this study needs to be further explored. © 2014 S. Karger AG, Basel.
    Medical Principles and Practice 09/2014; · 0.96 Impact Factor
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    ABSTRACT: In-stent restonosis is an important limitation for coronary stenting. The cause of in-stent restenosis is neointimal hyperplasia developed from smooth muscle and matrix. We aimed to investigate the association between urotensin II (U-II) and in-stent restenosis after coronary stenting, which causes endothelial and muscle proliferation and accumulation of collagen. Total 153 patient was enrolled to the study who meet criteria for angiographic indication underwent coronary artery angiography. All patients have history undergone for coronary stent implantation 3 to 9 months ago. In-stent restenosis is identified as ≥50% narrowing inside the stent. In-stent restenosis was observed in 73 and remaining of 80 patients revealed no critical lesion in stent on angiographic evaluation. Plasma level measurement of U-II was performed in all subjects. Urotensin II levels were found to be significantly higher in Group I compared to Group II (1.44±0.74 ng/mL and 1.21±0.59 ng/mL, respectively, P=0.03). In a subgroup analysis, U-II levels were significantly higher in group I than group II in patients treated with bare metal stent (BMS) (1.50±0.76 ng/mL and 1.18±0.56 ng/mL, P=0.016); however, there was not significant change in patients treated with drug-eluted stent (1.26±0.64 ng/mL and 1.27±0.63 ng/mL, P=0.9). Multivariate statistical significance: negative correlation was found between in-stent restenosis and renin-angiotensin-system (RAS) blocker usage (P=0.040) and right coronary artery (RCA) lesion interventions (P=0.018). This study revealed high plasma U-II level might be accepted as a risk factors for in-stent restenosis with BMS. In-stent restenosis is less developed after RCA interventions and taking drug of RAS blockages. Our study findings need to be confirmed in further studies.
    Minerva cardioangiologica. 06/2014; 62(3):297-303.
  • Angiology 05/2014; · 2.37 Impact Factor
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    ABSTRACT: Objective: To investigate the effects of recurrent electroconvulsive therapy (ECT) on cardiac function as assessed by echocardiography. Subjects and Methods: Twenty-three patients (11 males and 12 females) with different psychiatric disorders who were apparently free of any cardiovascular disorders and underwent ECT were enrolled in the study. Echocardiographic findings including diastolic mitral inflow and tissue Doppler features were recorded at baseline and at the end of the 7th and last ECT in all patients. Results: The mean age of the patients was 37.95 ± 13.28 years (range 19-71). There was no significant difference in mitral E wave velocities and tissue Doppler E' velocities between the baseline and after the 1st ECT (p = 0.161 and p = 0.083, respectively). The results were similar after the last ECT session (p = 0.463 and p = 0.310, respectively). However, there was a significant increase in transmitral A wave velocity after the 1st and 7th ECT session compared to the values at baseline (p = 0.008 and p = 0.017, respectively). Conclusion: The mitral diastolic inflow A wave velocity increased 20 min after ECT, and this increase persisted after recurrent ECT sessions. This finding could be considered as an indicator of acutely increased sympathetic tone. © 2014 S. Karger AG, Basel.
    Medical Principles and Practice 04/2014; · 0.96 Impact Factor
  • Case Reports 04/2014; 2014.
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    ABSTRACT: We aimed to determine long-term prognostic role of echocardiographic and hematologic parameters in heart failure patients complicated with incidental pleural effusion (PE) diagnosed during echocardiographic evaluation. The study was performed by evaluating patient records in which PE was incidentally detected during echocardiographic examination in a tertiary teaching hospital between Jan 2002 and Dec 2012. Total 151 patients with heart failure complicated with PE were analyzed. All patients' mortality data were collected from registry center of Social Insurance Institution which is officially responsible for recording all mortality data in Turkey. Detailed echocardiographic and hematologic parameters including creatinine, uric acid, albumin, sodium, potassium, hemoglobin at the time of hospital admission were analyzed. Data from 151 eligible patients were analyzed. We compared patients who died (n = 51) during follow-up with the survivors (n = 100) in terms of patients' echocardiographic and hematological features. Mean duration of follow-up was 71.5 ± 45.6 months. Fifty-one patients (33.8 %) died during this follow-up period. From all echocardiographic parameters only dilated left atrium (LA) diameter was found to be associated with a poor prognosis (p = 0.034). Low albumin, sodium and hemoglobin levels were associated with poor prognosis (p < 0.001, p = 0.002 and p = 0.007, respectively). We showed that dilated LA, as well as low albumin, low sodium and low hemoglobin levels had a worse prognostic significance than patients with normal LA size, within normal limits of albumin, sodium and hemoglobin levels in patients with heart failure complicated with PE determined incidentally by echocardiography.
    The international journal of cardiovascular imaging 04/2014; · 2.15 Impact Factor
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    ABSTRACT: Cardiac effects of chemotherapy are usually recognized after clinical symptom or sign occurrence in patients with breast cancer. In this study, we aimed to determine the potential subclinical cardiotoxic effects of chemotherapy that were given lower dosage than well known cardiac safety dosage limits in patients with breast cancer during early period.
    Anadolu kardiyoloji dergisi: AKD = the Anatolian journal of cardiology 04/2014; · 0.76 Impact Factor
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    ABSTRACT: To investigate electrocardiogram changes due to scorpion stings and association between oxidative stress index, body oxidant/antioxidant system and the electrocardiogram changes.
    JPMA. The Journal of the Pakistan Medical Association. 04/2014; 64(4):423-7.
  • Muhammed Oylumlu, Vedat Davutoglu, Suleyman Ercan
    European heart journal cardiovascular Imaging. 02/2014;
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    ABSTRACT: The purpose of this study was to determine the long-term prognostic implications of incidental pleural effusion (PE) detected during echocardiographic examination and its relationship with concomitant diseases. The study hypothesis is to test whether incidental pleural PE detected during echocardiographic examination be used as a prognostic marker. The study was performed by evaluating patient records (N = 251) in whom PE was incidentally detected during echocardiographic examination in a tertiary hospital between 1999 and 2012. The patients were classified into 4 major groups according to the concomitant primary disease: malignancy, and cardiovascular, renal, and pulmonary diseases. The total survival time was obtained from hospital records for patients who died during the hospital stay and social security institution records for patients with out-of-hospital death. One-year and 5-year life expectancies of PE cases concomitant with different disorders were as follows; heart failure (n = 151), 81% and 70%; malignancies (n = 45), 53% and 44%; pulmonary diseases (n = 37), 89% and 78%; renal diseases (n = 18), 100% and 83%; respectively. PE associated with heart failure, renal disease, and pulmonary disease had similar (P > 0.05 for all) and favorable outcomes compared to PE associated with malignancies (P < 0.001). The prognosis of incidental PE was the worst in patients with concomitant malignancies; however, PE associated with nonmalignant diseases including heart failure, pulmonary disease, and renal disease have similar and favorable outcomes.
    Clinical Cardiology 01/2014; · 1.83 Impact Factor
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    ABSTRACT: The aim of the present cross-sectional study was to evaluate either non-dipper-type or dipper-type circadian rhythm of blood pressure (BP) in normotensive rheumatic mitral stenosis (MS) patients. Eighty-eight normotensive rheumatic mitral valve disease (RMVD) patients and 41 normal participants were enrolled in the study. All participants underwent ambulatory blood pressure monitoring. Nocturnal BP dipping was calculated as follows: (awake BP-asleep BP)×100/awake BP. Patients with a nocturnal reduction in average daytime systolic BP and diastolic BP of less than 10% were classified as nondippers. Patients with RMVD were divided into two groups with respect to the top and bottom 1.5 cm of the mitral valve area (MVA). There was a highly significant relationship between the two groups with control in the frequency of a nondipping status (χ=22.721; d.f.=2; P<0.001). Afterwards, the Mann-Whitney U-test was used to compare the two groups and the control group. There was no difference in the frequency of nondipping between patients with an MVA of greater than 1.5 cm and the control group (P>0.05). However, the nondipping level was higher in patients with an MVA of less than 1.5 cm than in the control group and in patients with RMVD with an MVA of greater than 1.5 cm (P<0.001 and <0.001, respectively). The circadian BP rhythm is impaired and the incidence of nondipping BP is higher in patients with MS than in normal patients. Moreover, we believe that autonomic nervous system dysfunction in patients with MS may be detected efficiently using ambulatory blood pressure monitoring.
    Blood pressure monitoring 01/2014; · 1.62 Impact Factor
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    ABSTRACT: Infective endocarditis (IE) is more common in left heart chambers in the general population. Right-sided IE is increased especially in intravenous drug misusers. However, involvement of both right and left heart chambers is extremely rare in these patients. In this study, we present the case of a 26-year-old male intravenous drug misuser, hospitalised with Staphylococcal tricuspid valve IE complicated with pulmonary septic embolism. After 10 days, an echocardiogram revealed vegetation on the mitral valve in addition to unchanged tricuspid valve vegetation. IE can be a rapidly progressive disease despite the medical treatment in intravenous drug misusers. Generally, the right-sided IE is common in intravenous drug misusers; however, as in our case, it may involve left heart chambers as well. Therefore, in the right-sided IE cases, a serial echocardiographic examination of both heart chambers is strictly recommended.
    Case Reports 12/2013; 2013(dec11_1).
  • Hayri Alici, Suleyman Ercan, Vedat Davutoglu
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    ABSTRACT: Brucellosis is worldwide a zoonotic infective disease especially seen in developing countries. Frequently it is transmitted to humans through the consumption of products derived from unpasteurized milk and through direct contact with infected animal tissue. Although the disease leads to many complications, cardiovascular involvement that is seen in less than 2% of cases usually manifests itself in clinical practice as endocarditis. Endocarditis is diagnosed lately in the course of the disease with mostly aorta valve involvement and leads to serious morbidity and mortality. Here we present a case report and literature review on brucella endocarditis which is a rare but serious clinical condition.
    Cor et vasa 12/2013;
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    ABSTRACT: Objectives: We aimed to investigate the efficacy and safety of a belt mechanism (anjiobelt), which we developed recently and patented, which allows mobility after coronary operations and the application of adjustable pressure to the femoral artery. Study design: Between October 2012 and April 2013, 189 consecutive patients undergoing percutaneous coronary intervention electively or due to acute coronary syndrome were enrolled. There were 96 patients in the sandbag group and 93 patients in anjiobelt group. Manual compression was applied to the femoral artery until reaching primary homeostasis. Then, a 4-5 kilogram sandbag or anjiobelt was placed. Mobilization was allowed in case of need in the anjiobelt group. Twenty-four hours after the procedure, superficial bruising in the femoral region, hematoma, pseudo-aneurysm, and arteriovenous fistula, as femoral artery complications, were noted using Doppler ultrasound. Results: Hematoma occurred more frequently in the sandbag group. Hematoma of <1 cm developed in 52 patients with sandbag and in 25 patients with anjiobelt (p<0.0001), while hematoma of 1-5 cm developed in 5 patients with sandbag and in 3 patients with anjiobelt (p<0.0001). Femoral artery pseudoaneurysm was seen in 4 patients (2 with anjiobelt, 2 with sandbag; p=0.975). Conclusion: Anjiobelt significantly reduces the incidence of hematoma in comparison to conventional sandbag in patients undergoing percutaneous coronary intervention. Other complications of the femoral region in terms of efficiency and safety appear to be similar to those observed with sandbag. The main problems occurring in these patients due to absolute immobilization have been eliminated with the anjiobelt.
    Turk Kardiyoloji Dernegi arsivi: Turk Kardiyoloji Derneginin yayin organidir 12/2013; 41(8):699-704.
  • Süleyman Ercan, Vedat Davutoglu, Orhan Ozer
    Asian cardiovascular & thoracic annals 12/2013; 21(6):746.
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    ABSTRACT: Nondipper pattern of blood pressure (BP) is associated with cardiovascular risk. In this study, we compared dipper versus nondipper patterns between normotensive patients with panic disorder (PD) and a control group. A total of 25 normotensive patients with PD and 25 controls were enrolled. Twenty-four-hour ambulatory BP monitoring was performed in all patients. At least 10% of sleep-related nocturnal decrease in systolic and diastolic BP was accepted as dipper status, while decreases <10% were defined as a nondipper. Patients with PD had significantly higher incidence of nondipper BP pattern than controls. The reduction of nighttime BP in both systolic and diastolic and mean BP was significantly lower in patients with PD than in the control group (7.6% ± 4.3% vs 13% ± 3.9%, P < .001; 11% ± 7% vs 15% ± 5%, P = .004; 9% ± 5% vs 14% ± 4%, P = .002, respectively). Panic disorder is associated with nondipper BP pattern, causing impaired circadian BP in normotensive settings.
    Angiology 11/2013; · 2.37 Impact Factor
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    ABSTRACT: A 17-year-old patient with type III Gaucher disease was hospitalized for recurrent syncope. Echocardiography showed calcified aortic and mitral stenosis. Three-dimensional computed tomography showed severely calcified plaques on the ascending aorta, arcus, and abdominal aorta. On follow-up, palpitations and syncope were triggered by emotional stress, followed by severe bradycardia that was resulted in cardiogenic shock; the patient died after 8 h despite all efforts. Gaucher disease should be kept in mind in the differential diagnosis of a young patient with extensive vascular and valvular calcification. Patients with symptomatic severe valvular disease must be referred for early surgery.
    Asian cardiovascular & thoracic annals 11/2013;
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    ABSTRACT: We aimed to investigate the presence of atrial electromechanical conduction delay in patients with neurocardiogenic syncope, which was diagnosed with head-up tilt table test (HUTT). A total of 29 patients (mean age: 30.6 ± 15.9 years) with vasovagal syncope, as diagnosed by HUTT, and 23 healthy control subjects (mean age: 34.7 ± 16.3 years) with a negative HUTT were enrolled to the study. Atrial electromechanical conduction delay was defined as the time elapsed from the beginning of the P wave in the electrogardiogram to the beginning of the Am wave in tissue Doppler. There was no statistically significant difference between the groups in terms of interatrial conduction delay, whereas the difference was significant with regard to the right intraatrial electromechanical conduction delay (P < 0.01) and the left intraatrial electromechanical conduction delay (P < 0.0001). There was a negative correlation between the left intraatrial electromechanical conduction delay and the right intraatrial electromechanical conduction delay (r = -0.486, P = 0.001), whereas a positive correlation was present with the interatrial electromechanical conduction delay (r = 0.507, P = 0.001). In this study, the tissue Doppler method revealed that there is left and right intraatrial electromechanical conduction delay in patients with vasovagal syncope. The impact and role of atrial conduction delay as a pathophysiological determinant should be confirmed in further studies.
    Pacing and Clinical Electrophysiology 11/2013; · 1.75 Impact Factor
  • Suleyman Ercan, Vedat Davutoglu, Murat Yuce
    JACC. Cardiovascular Interventions 11/2013; 6(11):1214-1215. · 1.07 Impact Factor
  • Suleyman Ercan, Vedat Davutoglu
    Angiology 10/2013; · 2.37 Impact Factor

Publication Stats

640 Citations
420.51 Total Impact Points


  • 2002–2014
    • University of Gaziantep
      • Department of Cardiology
      Ayıntap, Gaziantep, Turkey
  • 2013
    • State Hospital of Ercis, Turkey
      Arcis, Van, Turkey
    • Adiyaman University
      Carbanum, Adıyaman, Turkey
    • Marmara University
      • Department of Cardiology
      İstanbul, Istanbul, Turkey
  • 2011–2013
    • Dicle University
      • • Department of Obstetrics and Gynecology
      • • Department of Cardiology
      Amida, Diyarbakır, Turkey
    • Mustafa Kemal University
      • Department of Cardiology
      Myriandrus, Hatay, Turkey
  • 2005
    • Istanbul University
      • Department of Radiology
      İstanbul, Istanbul, Turkey