19 research outputs found

    Noncompaction cardiomyopathy and dextroversion of the heart

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    The prevalence of patients with noncompaction is reported to be 0.014% on echocardiographic examination. The estimated incidence of dextroversion (dextrocardia with isolated reversal of the heart with normally positioned visceral organs) is 1:2,800, while the real incidence of dextroversion and left ventricular noncompaction is still not known; to our knowledge only two cases have been reported in the literature. Noncompaction can generally be diagnosed using echocardiography; however, in the case reported here cardiac magnetic resonance imaging was important for the definitive diagnosis of dextroversion and noncompaction, because no adequate echocardiographic images could be obtained

    The determination of relations between statistical seismicity data and geodetic strain analysis, and the analysis of seismic hazard in southwest Anatolia

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    This study aims the relations between seismicity data and strain analysis based on geodetic space techniques in order to define the seismicity hazard of the southwest Anatolian region of Turkey. This region has complex tectonic formations and requires sophisticated techniques and approaches to investigate seismic activities. In this study, global navigation satellite system (GNSS) observations were used to determine the velocity field of the region. The strain rates of the region were obtained from the evaluation of this velocity field. In addition, seismicity b parameters of the region were calculated from the analysis of seismicity data. Furthermore, the seismicity data and the geodetic strain rates obtained from the GNSS observations were combined to show the statistical correlation. This correlation was interpreted to define the seismicity. According to the results derived from the correlation analysis, the geodetic strain analysis and seismicity data were highly and inversely correlated (r = −0.96). After the determination of the correlation, the seismic hazard data of the region was added to the analysis. This process shows that seismic hazards are highly and negatively correlated to seismicity data (r = −0.90), even though they are highly but positively correlated to geodetic strain analysis (r = 0.88)

    Paraoxonase-1 Enzyme Activity and Oxidative Status in Pulmonary Hypertension Original Article

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    WOS: 000527244700012Objective: Oxidative stress has been considered to be one of the main causes for the development of pulmonary hypertension (PH) via leading alteration of pulmonary vasomotor tone induced by hypoxia. the aim of this study is to determine the serum paraoxonase-1 enzyme (PON-1) activity, arylesterase activity, the antioxidant-oxidant status in patients with PH and to compare with healthy controls. Material and Methods: Thirty five healthy individuals (mean age 45.7 +/- 5.9 years) as a control group and thirty eight patients (mean age 46.5 +/- 12.6 years) with a diagnosis of PH wereincluded in thestudy. Serum PON-1 and arylesterase activity, the total antioxidative capacity of plasma (TAC) and total oxidantstatus (TOS) were measured by using colorimetric methods. the Oxidative Stress Index (OSI) wascalculated as TOS/ TACX100. Results: Serum PON1 activity is significantly lower in PH patients when compared with healthy controls (p=0.001). the serum arylesterase activity and TAC, TOS and OSI status were similarin bothgroups. There is inverse correlation between serum PON1 activityand NYHA functionalcapacity (r:-0.649 p=0.001). Furthermore, PON1 activity of study patients are similarin the PH subgroups. Serum activity of PON1 wasfoundto bethe only independent parameter for the presence of PH in binary logistic regression analysis (OR 0.984, 95 % CI 0.977-0.992, p=0.001). Eight patients died follow up period (27.6 +/- 14.5 months) and none of theparametersincluding PON1 were associated with mortality. Conclusion: Serum PON1 activity of PH patients is lowerthanhealthypopulation, but does not predictmortality

    Thermal structure of the crust in the Black Sea: comparative analysis of magnetic and heat flow data

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    This paper presents the first study of mapping of the Curie point depth (CPD) from magnetic data for the Black Sea and a comparison with a classical thermal modeling from heat flow data. The provided relationship between radially averaged power spectrum of the magnetic anomalies and the depths to the magnetic sources of the Black Sea vary from 22 to 36 km. Deepening of CPDs observed in the western and eastern Black Sea basins correspond with the thickest sediment areas, whereas the shallow CPDs are related to the Mid-Black Sea Ridge and thin sediment areas at the costal side of the Black Sea. For comparison, the temperature field was also modeled from heat flow data from the Black Sea along three approximately north-south directed profiles corresponding to known DSS soundings. The Curie isotherm along the profiles occurs at depths of 22-35 km. A comparison of the results of the two independent methods reveals only 8-10 % discrepancy. This discrepancy is equal to an accuracy of temperature determination from heat flow data
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