Search Results
Results 251 - 300 of 735
< 1 2 3 4 5 6 7 8 9 10 11 >
Jeong Woowon - - 2013
To study the effects of the geometrical characteristics of a framing coil on aneurysm thromboembolization efficacy, the hemodynamics in lateral aneurysms filled with coils having a different shape, orientation, and thickness were analyzed using computational fluid dynamics. The aneurysms packed with vortex and cage-shaped coils were modeled using three different ...
Bhave Nicole M - - 2013
An elderly man with dyspnea and syncope was found to have severe aortic stenosis (AS) by the continuity equation, despite a transaortic gradient that was only moderately elevated, in the setting of severe left ventricular dysfunction. The transaortic gradient increased during postextrasystolic beats, suggesting that his that his AS was ...
Anjum Qth - - 2013
A 45-year-old woman presented with headache, followed by dysphagia and dysphonia. Examination revealed IX, X and XII cranial nerve weakness. Magnetic resonance angiography of neck vessels confirmed a left internal carotid artery dissection at the skull base, with haematoma in the aneurysmal left internal carotid artery. This dilated area of ...
Kim Dong Hyeok - - 2013
Percutaneous recanalization of chronic total occlusions (CTOs) in peripheral arteries, especially TASC D classification including the distal aorta and both iliac arteries is still technically challenging. The conventional technique using standard guidewires and catheters guided by computed tomography and angiography can achieve a limited initial success, depending on lesion characteristics ...
Saxena Alok - - 2013
The ulnar artery provides a major blood supply to the hand in the form of the superficial palmar arch, with the assistance of the radial artery. A rare pattern of the superficial palmar arch was observed in a formalin fixed, male cadaveric left hand. The ulnar artery was only involved ...
Shariat Masoud - - 2013
Asymptomatic 12-year-old girl with a heart murmur underwent echocardiogram and suspicious continuous flow was detected in her interventricular septum. She underwent cardiac magnetic resonance (CMR) for further investigation. The CMR images demonstrated anomalous origin of the right coronary artery from the pulmonary artery. Adenosine stress perfusion scan showed an inducible ...
Awasthy Neeraj - - 2013
The case of an infant with double outlet right ventricle with anatomically corrected malposition of the great arteries, bilateral infundibulum, and an echocardiographically routable ventricular septal defect (VSD) is presented. After numerous efforts to visualize the margins of the VSD, the best surgical exposure of the VSD was through the ...
Fontanella Marco - - 2013
Anastomosis to the superficial temporal artery is suitable in patients with functional and structural impairment of the middle cerebral artery (i.e., complex aneurysms and skull base tumors), as either definitive treatment or an additional safety measure. A shorter occlusion time or a non-occlusive technique is expected to reduce the risk ...
Mittal S R SR Deptt. of Cardiology, St. Francis Hospital, - - 2013
A case of pseudoaneurysm of right radial artery following transradial coronary angiography is reported. Adequate hemostasis is the key to prevention. Prolonged ultrasonography guided compression of neck of pseudoaneurysm or injection of procoagulants in the cavity of pseudoaneurysm can help non surgical closure.
Sessa Roberto R Cardiovascular research institute, University of California San Francisco, CA 94158, - - 2013
MicroRNAs (miRNAs) are a class of small noncoding RNA which exert post-transcriptional gene regulation activity by targeting messenger RNAs. miRNAs have been found to be involved in various fundamental biological processes and deregulation of miRNAs is known to result in pathological conditions. In this review, we provide an overview of ...
Tanaka Koji - - 2013
Our objective is to present a case of fatal multiple systemic emboli after intravenous thrombolysis for cardioembolic stroke. A 64-year-old woman with atrial fibrillation was admitted for evaluation of sudden consciousness disturbance, right hemiplegia, and aphasia. Diffusion-weighted imaging showed no early ischemic changes of the brain, and magnetic resonance angiography ...
Martínez-Galdámez Mario - - 2013
Purely extradural lumbar spinal arteriovenous malformations (AVMs) are rare lesions that have diverse presentations and imaging features. The treatment of a symptomatic high flow paraspinal AVM with multiple feeders remains a challenge. We report the first use of an Ascent balloon (dual lumen balloon catheter) to deliver Onyx with excellent ...
Pagnamenta Alberto - - 2013
The time constant of the pulmonary circulation, or product of pulmonary vascular resistance (PVR) and compliance (Ca), called the RC-time, has been reported to remain constant over a wide range of pressures, etiologies of pulmonary hypertension, and treatments. We wondered whether increased wave reflection on proximal pulmonary vascular obstruction, like ...
Shimbo Daichi D Department of Medicine, Columbia University Medical Center, New York, New York, USA. - - 2013
Although higher visit-to-visit variability (VVV) of blood pressure (BP) is associated with increased cardiovascular disease risk, the physiological basis for VVV of BP is incompletely understood. We examined the associations of aortic distensibility (assessed by magnetic resonance imaging) and artery elasticity indices (determined by radial artery pulse contour analysis) with ...
Haas Nikolaus A - - 2013
There is ongoing debate regarding the initial management of symptomatic neonates with tetralogy of Fallot. Although neonatal repair can be performed with low mortality, it is associated with increased morbidity and long-term impact on right ventricular performance. Traditionally, the modified Blalock-Taussig shunt remains the palliative procedure of choice. Differential pulmonary ...
Schwartz A - - 2013
Radiofrequency ablation (RF) is a relatively safe and reliable technique for the treatment of pulmonary metastases that has seen rapidly expanding use. Lesions situated near the diaphragm are difficult to treat by RF due to the risk of thermal injury to the diaphragm. Diaphragmatic perforation with progressive development of a ...
Frommelt Peter C - - 2013
BACKGROUND: A Pediatric Heart Network trial compared outcomes in infants with single right ventricle anomalies undergoing Norwood procedures randomized to modified Blalock-Taussig shunt (MBTS) or right ventricle-to-pulmonary artery shunt (RVPAS). Doppler patterns in the neo-aorta and RVPAS may characterize physiologic changes after staged palliations that affect outcomes and right ventricular ...
Otani Tomohiro - - 2013
Coil embolization is performed to induce flow stagnation in cerebral aneurysms and enhance blood clot formation, thus preventing rupture and further growth. We investigated hemodynamics in differently positioned aneurysms coiled at various packing densities to determine the effective packing density in terms of flow stagnation. As a first step, hemodynamic ...
McDonald Robert A - - 2013
AimsThe long-term failure of autologous saphenous vein bypass grafts due to neointimal thickening is a major clinical burden. Identifying novel strategies to prevent neointimal thickening is important. Thus, this study aimed to identify microRNAs (miRNAs) that are dysregulated during neointimal formation and determine their pathophysiological relevance following miRNA manipulation.Methods and ...
Raman Fabio S FS Radiology and Imaging Sciences, National Institutes of Health of Clinical Center, 10 Center Drive, Building 10, Rm 1C355, Bethesda, MD 20892-1182, - - 2013
Gadolinium enhanced coronary magnetic resonance angiography (MRA) at 3 T appears to be superior to non-contrast methods. Gadofosveset is an intravascular contrast agent that may be well suited to this application. The purpose of this study was to perform an intra-individual comparison of gadofosveset and gadobenate for coronary MRA at ...
Nakamura Masanobu - - 2013
We demonstrate the feasibility of the vessel-selective, non-contrast, time-resolved magnetic resonance angiography (MRA) technique, "contrast inherent inflow enhanced multi-phase angiography combining vessel-selective arterial spin labeling technique (CINEMA-SELECT)". This sequence consists of two major techniques: pulsed star labeling of arterial regions (PULSAR) and Look-Locker sampling. We hypothesize that this technique allows ...
Chen Shao-Liang - - 2013
Aims: The study sought to assess the effect of percutaneous pulmonary artery denervation (PADN) on balloon-occlusion-induced acute pulmonary arterial hypertension (PAH) in vivo. The PADN is a minimally invasive and endovascular catheter-based interventional therapy using radiofrequency ablation to abolish the pulmonary arterial baroreceptors to pressure response. Methods and results: To ...
Soizic Leparco - - 2013
The current case describes an unreported complication of Bakri balloon placement: the migration of Bakri balloon to broad ligament through an unsuspected uterine rupture. Finally, a hysterectomy had been required. Bakri balloon may be involuntary introduced in an unexpected uterine rupture, even if the balloon is placed under ultrasound guidance.
Urbina Elaine M EM Preventive Cardiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC-7002, Cincinnati, OH 45229, USA. - - 2013
Lipid levels are linked to early atherosclerosis. Risk stratification may be improved by using triglyceride to high-density lipoprotein cholesterol ratio (TG/HDL-C), which relates to arterial stiffness in adults. We tested whether TG/HDL-C was an independent predictor of arterial stiffness in youth. Subjects 10 to 26 years old (mean 18.9 years, ...
Greben Craig R - - 2013
We report our experience with an embolization technique that allows safe, controllable exclusion of pulmonary arteriovenous malformations using detachable coils, a single venous access site, coaxial catheter guidance, and 1 or 2 microcatheters. This technique is particularly useful when treating central lesions with a short feeding artery and when high ...
Verbeeck N - - 2013
Renal transplantation is the choice treatment of end-stage renal disease. When it is not indicated or not immediately feasible, hemodialysis must be performed, preferably via a native arteriovenous fistula in the forearm. A pre-anastomotic occlusion of this type of fistula is often accompanied by a thrombosis of its draining vein. ...
Clarkson Thomas B TB Department of Pathology/Comparative Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157-1040, USA. - - 2013
The objectives of this study were to evaluate the effects of bazedoxifene acetate (BZA), a new selective estrogen receptor modulator, on coronary and peripheral artery atheroscleroses and to determine if it would antagonize the atheroprotective effects of conjugated equine estrogens (CEE) on a monkey model. Ninety-eight surgically postmenopausal monkeys (Macaca ...
Moritz Regina - - 2013
To evaluate the potential of whole-body CT to detect localized areas of decreased or increased vascularity in coronary arterial walls. We used both microsphere embolization of coronary artery vasa vasorum to generate small areas of hypoperfusion and surrounding hyperperfusion of the arterial wall and diet-induced hypercholesterolemia. As a stimulus for ...
Filograna Laura - - 2013
A 65-year-old man collapsed suddenly, while on an escalator. Despite intensive cardio-pulmonary resuscitation, the subject died 1h later. Post-mortem magnetic resonance imaging and post-mortem computed tomography angiography demonstrated rupture of an ascending aortic aneurysm, with haemorrhage into the pericardial cavity and the uncommon associated finding of haemorrhage into the left ...
Faye Nathalie - - 2013
PURPOSE: To determine whether diffusion-weighted imaging (DWI) characteristics could predict the effectiveness of uterine arterial embolization in treatment of fibroids. METHODS: This retrospective study included 17 women (27 fibroids) who underwent uterine arterial embolization for fibroids. MR imaging (1.5 T) was performed before, 1 week and 6 months after uterine ...
Nicholson George T - - 2013
A newborn infant with obstructed supracardiac total anomalous pulmonary venous return underwent emergent surgical correction on day of life 0. A surgically placed transthoracic pulmonary artery catheter was used to monitor pulmonary artery pressure and removed on post-operative day 3. Following acute deterioration in respiratory status requiring reintubation, echocardiographic assessment ...
Chang Yi-Chih - - 2013
The "Guideliner", a child catheter, aims to deliver stents in tortuous coronary lesions by deep engagement and providing better support. Coronary artery spiral dissection which may be caused by deep-seated coronary catheters or non-coaxial engagement is one of the most seen percutaneous coronary intervention-related complications. In this case, Guideliner-related left ...
Borer-Weir K E - - 2013
Digital vasoconstriction, ischaemia and hypoxia may predispose to acute laminitis. Laminitis incidence varies seasonally, peaking in spring and summer. Direct seasonal influences on equine digital artery (EDA) contractility have not been investigated. This study assessed seasonal variation in maintenance of phenylephrine (PHE)-induced tone in isolated EDAs under hypoxic (95% nitrogen) ...
Haines David E - - 2013
BACKGROUND: -Cerebral diffusion-weighted MRI lesions have been observed after catheter ablation of atrial fibrillation. We hypothesized that conditions predisposing to microembolization could be identified using a porcine model of pulmonary vein ablation and an extracorporeal circulation loop. METHODS AND RESULTS: -Ablations of the pulmonary veins were performed in 18 swine ...
Margariti Persefoni - - 2013
A 13-year-old immunocompromised girl developed neurotuberculosis. Arterial spin labeling technique indicated areas of hypoperfusion in the vascular territories of the left posterior cerebral artery and superior cerebellar artery without restricted diffusion, suggesting early tuberculous arteritis. MR angiography confirmed vascular involvement, so adjunctive anticoagulant therapy was initiated. Complete resolution of arterial ...
Yuan Ke - - 2013
MicroRNAs (miRNAs) are small noncoding RNAs that not only regulate gene expression during normal development but can also be active players in several diseases. To date, several studies have demonstrated a possible role for specific miRNAs in the regulation of pulmonary vascular homeostasis suggesting that novel therapeutic agents which target ...
Song Min-Ho - - 2013
Exposure of the mitral valve is of critical importance in mitral valve surgery. The mitral valve is located near the interatrial groove. As we accumulated experience and learned from embryology, we found that a more central left atriotomy was advantageous, and was made possible by interatrial groove dissection using an ...
Yim Deane - - 2013
Congenital coronary arterial fistula is a rare cause of congestive heart failure in neonates. We describe a neonate who developed early symptoms because of an unusually large left coronary artery to right ventricular fistula. Computed tomography and coronary angiography delineated anatomy and facilitated successful surgical closure.
Lee Hyung-Jin - - 2013
Cerebral aneurysm (CA) is an important acquired cerebrovascular disease that can cause catastrophic results. MicroRNAs (miRNAs) are small non-coding RNAs, playing essential roles in modulating basic physiologic and pathological processes. Currently, evidences have been established about biologic relationship between miRNAs and abdominal aortic aneurysms. However, biologic roles of miRNAs in ...
Johnston Maximilian Joseph - - 2013
We present the case and radiologic images of an 85-year-old woman who presented with a left loin abscess secondary to a left staghorn calculus and a nonfunctioning left kidney. We examined the rationale behind the eventual decision to pursue conservative treatment in the form of incision and drainage rather than ...
Lancellotti Patrizio - - 2013
Pulmonary hypertension (PH) is defined by a sustained increase in mean pulmonary arterial pressure > 25 mmHg. Due to its widespread availability, echocardiography (ECHO) is used as the first-line imaging modality to detect pulmonary PH and assess right ventricular (RV) function in daily routine. As such, ECHO is the key ...
Lucisano L - - 2013
Coronary bifurcation lesions are regarded as complex and their treatment is still the subject of substantial debate. Important elements to consider before approaching a bifurcation include angle and anatomy, in particular the take off angle (proximal angle, A) that is between the proximal MB and SB and the carina angle ...
Flors Lucía - - 2013
The objective of our study was to evaluate the diagnostic performance of dual-source dual-energy CT (DECT) in the detection of endoleaks after thoracic endovascular aortic repair for thoracic aortic aneurysm and to investigate if a double-phase (arterial and dual-energy late delayed phase) or a single-phase (dual-energy late delayed phase) acquisition ...
Matsuo Hitoshi - - 2013
In this case report, physiological changes of myocardial perfusion in the collateral recipient right coronary artery (RCA) and the collateral donor left anterior descending artery (LAD) with an intermediate lesion were assessed using intracoronary pressure measurement, before and after revascularization of chronic total occlusion (CTO). A 44 year old male ...
Johnson Jonas - - 2013
Abnormal vascular-ventricular coupling has been suggested to contribute to heart failure with preserved ejection fraction in elderly females. Failure to increase stroke volume (SV) during exercise occurs in parallel with dynamic changes in arterial physiology leading to increased afterload. Such adverse vascular reactivity during stress may reflect either sympatho-excitation or ...
Herson Paco S PS Department of Anesthesiology, University of Colorado Denver, Aurora, CO 80045, USA. - - 2013
Pediatric stroke, birth to 18 years, is a significant cause of long-term disability in the United States; however, there is currently little experimental data on the pathophysiology of childhood stroke owing to lack of animal models. We developed a novel mouse model of experimental childhood-onset arterial ischemic stroke to characterize ...
Erkanli Korhan - - 2013
A 54-year-old woman was referred to our institution suffering from severe dyspnea and asthenia due to progressive heart failure. Multidetector computed tomography angiography revealed biatrial enlargement with an image of pulmonary vein aneurysm. She underwent valvuloplasty for mitral and tricuspid valves, ligation of left atrial appendage, and left atrial reduction ...
Jung Jin-Man - - 2013
A 29-year-old man presented with unilateral dull headache for 3 days, similar to previous headache, but with right hemiparesis; there was no antecedent infection or trauma. MRI showed left striatocapsular infarction without evidence of cardioembolism or vasculitis. Digital subtraction angiography demonstrated stenosis of the left middle cerebral artery (MCA) trunk ...
Hara Tomoya - - 2013
A basket-shaped microsnare has various uses such as the pull through technique during coronary intervention to chronic total occlusion (CTO). A 79-year-old man underwent angioplasty for the femoral artery occlusion. We performed a controlled antegrade and retrograde tracking (CART) with dilatation of a balloon on the antegrade guidewire. The retrograde ...
Konieczka Katarzyna - - 2013
Abstract Purpose: Endothelin-1 (ET) is an important molecule in vascular physiology. After an acute stimulation with ET, vessels are to some extent temporarily refractory to further stimulation. However, few details are known about this phenomenon. The aim of our study was to verify the existence of refractoriness in ophthalmic ciliary ...
< 1 2 3 4 5 6 7 8 9 10 11 >