1,720,979 research outputs found
Double-orifice left atrioventricular valve in patients with atrioventricular septal defect with and without down syndrome
No full textSmith-Lemli-Opitz syndrome, cardiac defects, and spleen anomalies
No full textSmith–Lemli–Opitz syndrome presents cardiac defects similar to that observed in heterotaxia with spleen anomalies. Recent experimental studies on mice showed the Hedgehog signaling involved in Smith–Lemli–Opitz syndrome. This genetic pathway is also implicated in the pathogenesis of L–R axis specification and heterotaxia
Double-outlet left ventricle with l-malposition of the great arteries and subpulmonary ventricular septal defect
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Double outlet right ventricle versus aortic dextroposition: morphologically distinct defects
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Congenital heart diseases in women
No full textAre there gender differences in prevalence, surgical results and long-term survival of patients with congenital heart disease? Available literature data allow us to state what follows. At birth there is a mild but significant prevalence of congenital heart disease in females. The most severe congenital heart diseases are less frequent in girls, but when they are present in females, they are linked to a higher surgical mortality rate, due perhaps to lower weight at birth and to the prevalence of extracardiac malformations and/or of associated genetic syndromes. On the other hand, in adults, surgery for congenital heart disease is at higher risk in males, and so the long-term survival rate is higher in females. Particular psychological attitudes, a higher incidence of pulmonary hypertension, as well as specific problems linked to the reproductive function characterize congenital heart disease in adult women. The knowledge and analysis of these data are essential for a correct management of congenital heart disease in neonates, children and adults
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