I wo-dimensional echocardiography has been used extensively to assess aortic arch anatomy in infants and children. Echocardiographic techniques for examination of left and right aortic arch, coarctation and interruption of the aorta, aortic aneurysm and double aortic arch have been well described.lp2 Right aortic arch with retroesophageal segment and left descending aorta, an unusual form of va...

Q2. Damon arch form has broader posterior width than Ortho Form II. Compared to the self-ligating system group (Damon arch form used), conventional system group (Ortho Form II used), showed narrower posterior width as the shape of their arch form, and also had longer arch length and depth. Because the arch dimensions of the two groups were similar before treatment, it can be interpreted that th...

BACKGROUND The long-term effects of some surgical treatment procedures of arch replacement for aortic dissection or aortic aneurysm are unknown. CASE PRESENTATION The present study reports the case of a 68-year-old man admitted to our hospital for aortic arch anastomotic pseudoaneurysm with concomitant aortic root enlargement and coronary artery stenosis. Eleven years ago, at the age of 56 ye...

Thoracic endovascular aortic reconstruction (TEVAR) is increasingly used in the management of descending aortic pathology including aneurysms, dissections and transaction. When treating aortic arch pathology, hybrid procedures have been devised, in which major supra-aortic arteries are translocated using a variety of techniques. Such hybrid procedures offer an attractive alternative to open arc...

in this paper, we investigate variations of gold coin price and also probe to model the fluctuations and conditional variance of coin market returns. the data consist of daily market prices of gold coin over the 1380 – 1386 period. since volatility clustering is viewed in time series of returns, we employ arch (autoregressive conditional heteroskedasticity) methodology in order to model the var...

The conventional lingual arch is a nonfunctional fixed space maintainer used in the mandibular arch to maintain arch length by the prevention of mesial movement of the permanent first molars. This study highlights a functional lingual arch with a hinge-type lockable dentulous component that incorporates molar tubes, with various advantages over the conventional lingual arch. How to cite this ...

BACKGROUND In total arch repair with open placement of a triple-branched stent graft for acute type A aortic dissection, the diameters of the native arch vessels and the distances between 2 neighboring arch vessels did not always match the available sizes of the triple-branched stent grafts, and insertion of the triple-branched stent graft through the distal ascending aortic incision was not ea...