angiotensin-converting enzyme (ace) inhibitors including quinapril could exert a protective effect on cardiovascular system through endothelial system in normoglycemic and diabetic rats. the present experimental work was designed to study the vascular reactivity of aortic ring segments isolated from streptozotocin (stz)-diabetic rats treated for 4 weeks with nitro-l-arginine-methyl ester (l-nam...

OBJECTIVES The purpose of this series was to identify vascular rings prenatally on fetal echocardiograms. METHODS We reviewed the fetal echocardiograms and clinical histories of 9 patients with a diagnosis of vascular rings at our institution from 2004 to 2009. Eight patients had a prenatal diagnosis by fetal echocardiography. One other patient who had undergone fetal echocardiography had a d...

Angiotensin-converting enzyme (ACE) inhibitors including quinapril could exert a protective effect on cardiovascular system through endothelial system in normoglycemic and diabetic rats. The present experimental work was designed to study the vascular reactivity of aortic ring segments isolated from streptozotocin (STZ)-diabetic rats treated for 4 weeks with nitro-L-arginine-methyl ester (L-NAM...

A 14-month-old girl was evaluated for noisy breathing and swallowing. An upper gastrointestinal barium swallow study showed a filling defect of the esophagus at the level of the aortic arch suggestive of a vascular ring (Figures 1 and 2). A chest computed tomography angiogram with 3-dimensional reconstruction (1-mm sections; Movies I and II in the onlineonly Data Supplement) showed a vascular r...

in this note we introduce the notion of weak mccoy rings as a generalization of mccoy rings, and investigate their properties. also we show that, if is a semi-commutative ring, then is weak mccoy if and only if is weak mccoy.

OBJECTIVES This study observed midterm results of vascular ring connectors in surgery for aortic dissection. METHODS Vascular ring connectors were used as stents in vascular grafts to achieve quick, sutureless anastomoses. Tapes were used to secure ringed vascular grafts from outside the aorta. RESULTS From November 2007 to February 2011, 113 consecutive patients with aortic dissection, exc...

A 40 year old woman presented with dysphagia which was due to one of the forms of vascular ring. Her symptoms were relieved by relatively conservative surgery. The means of diagnosis and the surgical approach are discussed.