background: it is well known that the development of brain oxidative stress is one of the most serious complications of arterial hypertension that evokes brain tissue damage. the aim of this study was to examine the effects of atorvastatin treatment (20 mg/kg/day), as an antioxidant, to prevent the brain tissue oxidative stress in the hypertensive (htn) rats. methods: experiments were performed...

vertebral artery is the first branch of subclavian artery. it merges with the same artery of the opposite side to form basilar artery and becomes one of the important source of blood supply to the brain. variation in the origin of left vertebral artery was found in 65 year old female during magnetic resonance angiography of the neck vessels. it originated from aortic arch and was longer as comp...

a seven-year-old girl with clinical diagnosis of aortic insufficiency underwent echocardiographic and hemodynamic evaluation and referred for surgery with the same diagnosis. however, at surgery, aorto-ieft ventricular tunnel was found and repaired successfully. review of echocardiogram and catheterization data revealed interesting findings to differentiate this rare entity from congenital aort...

introduction: hydrogen sulfide (h2s) plays a key role in the regulation of vascular tone and protection of blood vessels against endothelial dysfunction. since the mechanism of salt impairing h2s-induced vascular relaxation is not fully clear, therefore this study was designed to investigate the role of potassium (k+) channels in the vasodilatory effects of exogenous h2s in rat aortic rings. ma...

multiple aorto-cardiac cavity communications is very rare but important complication of prosthetic aortic valve endocarditis. the case below illustrates multiple aorto-cardiac cavity fistula formation following prostethic aortic valve endocarditis presented with slowly progressive symptoms of heart failure. a brief review of surgical reconstruction and the existing literature are presented, inc...

background multiple classifications can be used to define the magnitude of aortic injury. the vancouver classification (vc) is a new and simplified computed tomography-based blunt aortic injury (bai) grading system correlating with clinical outcomes. objectives the objectives of this study are: 1) to describe the severity of aortic injury in a center with a predominantly surgical approach to ba...

case presentation a 43-year-old man was referred to our institution for a severe aortic regurgitation and an ascending aorta enlargement associated with a relapsing sub-aortic membrane, which had been treated in his childhood. he underwent a redo ascending aorta replacement and an aortic valve replacement (mechanical prosthesis) along with a resection of the relapsing sub-valvular membrane. som...

Background and Objective: In this research, the effect of chronic dietary soybean aqueous extract on aortic reactivity of streptozotocin (STZ)-diabetic rats was investigated. Materials and Methods: STZ-diabetic rats were treated with soybean aqueous extract for two months after diabetes induction. Contractile reactivity to KCl and phenylephrine (PE) and relaxation response to acetylcholine (ACh...

we report a rare case of acute right coronary artery stenosis developing in a patient undergoing aortic valve replacement. we present a case report with a brief overview of the literature relating to coronary artery occlusion associated with cardiac valve surgery – the theories and treatments are discussed. a 85 year-old female was admitted under the care of the  cardiothoracic team with signs ...