Person: YOZGAT, YILMAZ
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Publication Metadata only Modified myocardial performance index is not affected in fetuses with an isolated echogenic focus in the left ventricle(2015-02-01T00:00:00Z) Yozgat, Yılmaz; Kilic, Ayhan; Ozdemir, Rahmi; Karadeniz, Cem; Kucuk, Mehmet; Karaarslan, Utku; Mese, Timur; Unal, Nurettin; YOZGAT, YILMAZObjectives: We prospectively investigated the efficacy of modified myocardial performance index (mod-MPI) in the assessment of cardiac functions in fetuses with and without an isolated hyperechogenic focus (IHF) in the left ventricle and compared with conventional fetal echocardiography.Publication Metadata only Low Iron Stores in Otherwise Healthy Children Affect Electrocardiographic Markers of Important Cardiac Events(2017-06-01T00:00:00Z) Karadeniz, Cem; Ozdemir, Rahmi; Demirol, Mustafa; Katipoglu, Nagehan; Yozgat, Yılmaz; Mese, Timur; Unal, Nurettin; YOZGAT, YILMAZBoth an excess of iron and iron deficiency (ID) may lead to significant cardiac problems. Parameters that represent ventricular repolarization heterogeneity, like QT dispersion (QTd), corrected QT dispersion (QTcd), the interval between the peak and the end of the T wave (Tp-e), and Tp-e dispersion, have not been evaluated in otherwise healthy children with low iron levels before. Here we assessed the effects of low iron storage on P wave dispersion (PWd), QTd, Tp-e intervals, and Tp-e dispersion in otherwise healthy children. We prospectively reviewed 283 patients who were referred to pediatric cardiology department for cardiac evaluation due to murmurs and who were found to have no structural heart disease. The patients were divided into three groups according to their ferritin levels: Group 1: ferritin 25 ng/mL (n = 145). P wave duration (PW), QT and Tp-e intervals, and PW, QT, corrected QT (QTc), and Tp-e dispersions were significantly higher in patients whose ferritin level was < 15 ng/mL. A negative correlation was found between ferritin level and QT and QTc intervals, and QT, QTc, and Tp-e dispersions. Our results showed that a low serum ferritin level is associated with changes in some ECG parameters such as prolonged PWd, Tp-e interval, QT, QTc, and Tp-e dispersions in otherwise healthy children, and studies of other populations indicated that these parameters may predict arrhythmias in selected patients. These patients may be considered at some risk of developing arrhythmias. Therefore, careful evaluation of these ECG parameters is necessary in otherwise healthy children with low iron stores.Publication Metadata only Factors affecting pulmonary artery development indices prior to total correction surgery in cases with Tetralogy of Fallot: An observational retrospective review of 100 cases(2015-08-01T00:00:00Z) Ozdemir, Rahmi; Oner, Taliha; Demirpence, Sava; Karadeniz, Cem; Yilmazer, Murat Muhtar; Doksoz, Onder; Guven, Baris; Yozgat, Yılmaz; Mese, Timur; Tavli, Vedide; Sariosmanoglu, Osman Nejat; Alayunt, Emin Alp; YOZGAT, YILMAZObjective: The present study aimed to evaluate the association between the equations indicating the pulmonary artery development prior to total correction surgery in patients diagnosed with Tetralogy of Fallot, such as McGoon ratio, Nakata index and pulmonary artery Z score and the course of aortic arch, presence/absence of accompanying patent foramen ovale (PEO) and the patient-s gender.Publication Metadata only Short-term efficacy of ORS formulation and propranolol regimen in children with POTS(2020-08-01T00:00:00Z) YOZGAT, Yılmaz; OTÇU TEMUR, Hafize; Coban, Senay; Oner, Taliha; Karaarslan, Utku; Yozgat, Can Yilmaz; Karadeniz, Cem; ERGÖR, Serap Nur; ERENBERK, UFUK; YOZGAT, YILMAZ; OTÇU TEMUR, HAFİZE; ERGÖR, SERAP NUR; ERENBERK, UFUKBackground: To evaluate the short-term effectiveness of reduced-osmolarity oral rehydration salt formulation (ORS) and propranolol in children diagnosed with postural orthostatic tachycardia syndrome (POTS) in head-up tilt testing (HUTT).Publication Metadata only Different haemodynamic patterns in head-up tilt test on 400 paediatric cases with unexplained syncope(2015-06-01T00:00:00Z) Yozgat, Yılmaz; Karadeniz, Cem; Ozdemir, Rahmi; Doksoz, Onder; Kucuk, Mehmet; Karaarslan, Utku; Mese, Timur; Unal, Nurettin; YOZGAT, YILMAZObjective: To assess haemodynamic patterns in head-up tilt testing on 400 paediatric cases with unexplained syncope. Methods: Medical records of 520 children who underwent head-up tilt testing in the preceding year were retrospectively evaluated, and 400 children, 264 (66%) girls and 136 (34%) boys, aged 12.6 +/- 2.6 years (median 13; range 5-18), with unexplained syncope were enrolled in the study. Age, sex, baseline heart rate, baseline blood pressure, frequency of symptoms, and/or fainting attacks were recorded. The test protocol consisted of 25 minutes of supine resting followed by 20 minutes of 70 degrees upright positioning. Subjects were divided into nine groups according to their differing haemodynamic patterns. Results: There were no statistically significant differences between the groups with regard to age, gender, baseline blood pressure, and frequency of syncope (p > 0.05). The response was compatible with orthostatic intolerance in 28 cases (7.0%), postural orthostatic tachycardia syndrome in 24 cases (6.0%), asymptomatic postural orthostatic tachycardia syndrome in 26 cases (6.5%), orthostatic hypotension in seven cases (1.7%), vasovagal syncope in 38 cases (9.5%), and negative in 274 cases (69.2%). Vasovagal syncope response patterns were of type 3 in nine cases (2.2%), type 2A in 10 cases (2.5%), type 2B in two cases (0.5%), and type 1 (mixed) in 17 cases (4.25%). Conclusions: In the 400 paediatric cases with unexplained syncope, nine different haemodynamic response patterns to head-up tilt testing were discerned. Children with orthostatic intolerance syndromes are increasingly referred to hospitals because of difficulty in daily activities. Therefore, there is need for further clinical trials in these patient groups.Publication Metadata only A Valuable Tool in Predicting Poor Outcome due to Sepsis in Pediatric Intensive Care Unit: Tp-e/QT Ratio(2016-10-01T00:00:00Z) Ozdemir, Rahmi; Isguder, Rana; Kucuk, Mehmet; Karadeniz, Cem; Ceylan, Gokhan; Katipoglu, Nagehan; Yilmazer, Murat Muhtar; Yozgat, Yılmaz; Mese, Timur; Agin, Hasan; YOZGAT, YILMAZMethods: Ninety-three patients diagnosed with sepsis, severe sepsis or septic shock and 103 age- and sex-matched healthy children were enrolled into the study. PWd, QT interval, QTd, Tp-e interval and Tp-e/QT, Tp-e/QTc ratios were obtained from a 12-lead electrocardiogram.Publication Metadata only Cardiac Function in Newborns with Congenital Hypothyroidism: Association with Thyroid-Stimulating Hormone Levels(2015-12-01T00:00:00Z) Oner, Taliha; Ozdemir, Rahmi; Doksoz, Onder; Yozgat, Yılmaz; Karadeniz, Cem; Demirpence, Savas; Yilmazer, Murat Muhtar; Buyukinan, Muammer; Mese, Timur; Tavli, Vedide; YOZGAT, YILMAZObjective: The aims of this study were to demonstrate ventricular function changes in patients with congenital hypothyroidism and to investigate whether there is an association between any such changes and thyroid-stimulating hormone (TSH) levels using M-mode and Doppler electrocardiography (ECG) and tissue Doppler imaging (TDI).Publication Metadata only Risk Factors for Thrombosis, Overshunting and Death in Infants after Modified Blalock-Taussig Shunt(2016-05-01T00:00:00Z) Kucuk, Mehmet; Ozdemir, Rahmi; Karacelik, Mustafa; Doksoz, Onder; Karadeniz, Cem; Yozgat, Yılmaz; Mese, Timur; Sariosmanoglu, Osman Nejat; YOZGAT, YILMAZBackground: The Modified Blalock-Taussig shunt procedure can provide increased flow of blood to the lungs for babies born with certain congenital heart defects. We evaluated 44 subjects under 2 years of age who had a Modified Blalock-Taussig shunt (MBTS) procedure performed from 2009-2013, to investigate risk factors for thrombosis, overshunting and death.Publication Metadata only Are Mean Platelet Volume and Platelet Distribution Width Useful Parameters in Children With Acute Rheumatic Carditis?(2014-01-01T00:00:00Z) Ozdemir, Rahmi; Karadeniz, Cem; Doksoz, Onder; Celegen, Mehmet; Yozgat, Yılmaz; Guven, Baris; Mese, Timur; Unal, Nurettin; YOZGAT, YILMAZRheumatic fever (RF) is an inflammatory disease caused by autoimmune response to a preceding group A streptococcal infection. Mean platelet volume (MPV) reflects the platelet size and the rate of platelet production in bone marrow, and it may be used as an indicator of platelet activation and severity of inflammation. Fifty-three consecutive patients diagnosed with acute rheumatic carditis and 53 control subjects were enrolled into this study. Leukocyte and platelet counts were significantly higher in patients with acute carditis before treatment compared with controls, whereas MPV and platelet distribution width (PDW) values were not significantly different between groups. Platelet counts, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP) values were decreased significantly in patients with RF after treatment. There was not a significant difference in terms of platelet count between the controls and the patient group after treatment. ESR was found to be correlated with CRP in patients before and after treatment. In conclusion, the results of our study showed that MPV and PDW levels do not change during acute rheumatic carditis before and after treatment.Publication Metadata only An Unexpected Aortic Valve in Trisomy 21(2013-10-01T00:00:00Z) Karadeniz, Cem; Ozdemir, Rahmi; Yozgat, Yılmaz; Mese, Timur; YOZGAT, YILMAZ