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1.
Clin Hemorheol Microcirc ; 84(2): 141-151, 2023.
Article in English | MEDLINE | ID: mdl-36683503

ABSTRACT

BACKGROUND: Complete atrioventricular block is most commonly caused by age-related degeneration and fibrosis in the cardiac conduction system and is called primary idiopathic complete atrioventricular (iCAVB). Although many factors affect this situation, which increases with age in the cardiac conduction system, the relationship between whole blood viscosity (WBV) and iCAVB has not been clarified until now. In this study, we aim to reveal the relationship between iCAVB and WBV. METHODS AND RESULTS: 141 patients with dual-chamber permanent pacemaker implanted for iCAVB and 140 age- and sex-matched subjects were included in this study. The WBV values of the study groups were compared in both high shear rate (HSR) and low shear rate (LSR). Both WBV at HSR and WBV at LSR were significantly higher in the iCAVB group compared to the control group (16.11 [15.14-16.89] vs 14.40 [13.62-15.58]; 39.82 [17.43-55.23] vs 1.38 [-13.14-26.73]; p < 0.001, respectively). The patient population was followed up for an median of 38 months for all-cause mortality. Higher mortality rates were found in higher WBV at HSR and WBV at LSR (p < 0.001,for both). CONCLUSIONS: In this study, WBV was found to be an independent predictor for iCAVB, and in these patients WBV was associated with poor clinical outcomes.


Subject(s)
Atrioventricular Block , Blood Viscosity , Humans , Atrioventricular Block/therapy
2.
Thromb Res ; 220: 100-106, 2022 12.
Article in English | MEDLINE | ID: mdl-36334396

ABSTRACT

INTRODUCTION: COVID-19 disease, which has recently become an important cause of mortality and morbidity all over the world, is remarkably associated with thrombotic complications. Although many factors are responsible for these increased thrombotic complications in COVID-19 disease, its relationship with a marker that increases the risk of thrombosis such as Signal peptide-CUB-EGF domain-containing protein 1 (SCUBE1) has not yet been clarified. This is the first study to examine the potential diagnostic and prognostic value of SCUBE1 levels in patients with COVID-19. In this study, we aimed to clarify the relationship between the increased risk of thrombosis and SCUBE1 in the course of COVID-19 disease. MATERIALS AND METHODS: 553 patients with COVID-19 and 553 healthy controls were compared in terms of SCUBE1 levels. Additionally, patients with COVID-19 were divided into two groups according to their SCUBE1 levels and compared in terms of severity of disease, thrombotic complications and in-hospital mortality. RESULTS: SCUBE1 levels were significantly higher in patients with COVID-19 compared to the control group (p < 0.001). Plasma SCUBE1 levels were significantly higher in patients with severe disease and thrombotic complications, those with mild to moderate disease, and those without thrombotic complications (p < 0.001, for both). In addition, SCUBE1 was found to be an independent predictor of in-hospital mortality (p < 0.001). CONCLUSIONS: SCUBE1 may be one of the major determinants of thrombotic complications, which is an increased cause of mortality and morbidity in COVID-19 patients so inhibition of this peptide may be among the therapeutic targets in patients with COVID-19.


Subject(s)
COVID-19 , Thrombosis , Humans , Hospital Mortality , COVID-19/complications , Thrombosis/etiology , Plasma , Severity of Illness Index , Calcium-Binding Proteins
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