Coarctation is a narrowing of the aorta located between the first brachiocephalic vessel and the aortic bifurcation. When isolated coarctation is associated with congestive heart failure, it is considered clinically important,2 but what is "important" when the child is asymptomatic? Shaddy et all use as an entrance criterion "hemodynamically significant native coarctation of the aorta" without ...

abstract background: renal insufficiency is a potential complication after infrarenal abdominal aortic aneurysm repair and is a significant risk factor for postoperative mortality and morbidity. the aim of this study was to analyze the effect of this risk factor, before and during operation. methods: in this prospective study, between 2003 and 2006, 45 patients underwent repair of an infrarenal...

Despite earlier angiography, poststenotic aneurysm of the aorta was an unexpected finding at operation in two patients with coarctation. One aneurysm was found in an intercostal artery in a 19 year old man and the other was a false aneurysm just distal to the coarctation site in a 7 year old boy. These aneurysms are fragile, apt to rupture, and difficult to diagnose preoperatively. Though local...

OBJECTIVE The pathogenesis of abdominal aortic aneurysm (AAA) is complex and different factors, including calcification, are linked to increased complications. This study was conducted in order to verify if classical risk factors for AAA and cell blood count parameter could help in the identification of calcification progression of the aneurysm. DESIGN Risk factors were collected and cell blo...

Establishing an animal model of abdominal aortic aneurysm (AAA) is the key to study the pathogenesis and the pathophysiological features of AAAs. We investigated the effects of low-pressurized perfusion with different concentrations of elastase on aneurysm formation rate in the AAA model. Fifty male New Zealand white rabbits were randomly divided into A, B, C, D, and E groups. 10 μL of normal s...

The problem of the patient who has had one operation for coarctation of the aorta and who then requires another because of a late complication at or near the coarctation site is a demanding one. The safety of aortic cross-clamping at the second operation depends on the adequacy or otherwise of the collateral circulation, and this in turn depends on the presence or absence of residual or recurre...

Aortic coarctation (AC) represents -7% of congenital cardiac diseases and is usually diagnosed in childhood or early adult Life, depending on the severity of obstruction and associated malformations. Left untreated fewer than 20% of patients survive to age 50. We describe a case of thoracic AC, diagnosed at age 61, in a woman with known hypertension since age 45. At age 56 the patient was admit...

We contrasted in normotensive and hypertensive rats the effect of inhibition of nitric oxide synthesis on isometric tension development by aortic rings bathed in Krebs' bicarbonate buffer. NG-Nitro-L-arginine methyl ester (L-NAME) (3 x 10(-4) mol/L) increased tension (82 +/- 11% of the response to 120 mmol/L potassium chloride) in rings of thoracic aorta taken from hypertensive rats 7 to 14 day...

A ten week old girl who had previously undergone a palliative procedure for the hypoplastic left heart syndrome had unrelieved aortic coarctation that did not respond to standard balloon dilatation. Complete relief of coarctation with prompt clinical improvement was achieved with placement of an 8 mm self-expanding stent. Transcatheter stent implantation may have a role in selected patients wit...

INTRODUCTION AND OBJECTIVES Stent implantation is an effective therapy for aortic coarctation and recoarctation. However, in adolescents and adults, aortic wall rupture and dissection can occur, as well as aneurysms during follow-up. In order to reduce these complications, we electively implant covered stents. METHODS Since 2005, we have performed the procedure using femoral access in 17 pati...