Search Results
Results 451 - 500 of 3737
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Khoueiry Georges - - 2012
Aortic pulse pressure (APP) is related to arterial stiffness and associated with the presence and extent of coronary artery disease (CAD). Besides, the left coronary artery (LCA) has a predominantly diastolic flow while the right coronary artery (RCA) receives systolic and diastolic flow. Thus, we hypothesized that increased systolic-diastolic pressure ...
Wong Man-Zhi MZ Department of Plastic, Reconstructive and Aesthetic Surgery, Singapore General Hospital, - - 2012
The medial sural (medial gastrocnemius) perforator flap is a thin flap with a long pedicle. It has tremendous potential for applications in a variety of soft-tissue defects. We aimed to further clarify the vascular anatomy of the medial sural region and establish a safe approach for elevation of this flap. ...
Ohara Nobuyuki - - 2012
We report a case of internal carotid artery (ICA) occlusion caused by arterial dissection triggered by an elongated styloid process. A 43-year-old man presented with a headache followed by speech disturbance. Magnetic resonance imaging and magnetic resonance angiography scans revealed acute infarction and right ICA occlusion. A T1-weighted magnetic resonance ...
Keeling Aoife N - - 2012
We studied associations of the number and size of magnetic resonance angiography (MRA)-assessed lower extremity collateral vessels with the ankle-brachial index (ABI), severity of superficial femoral artery (SFA) plaque, and leg symptoms in participants with peripheral artery disease (PAD). A total of 303 participants with PAD underwent time-resolved MRA at ...
Matsuse S - - 2012
During one-lung ventilation, ventilation-perfusion mismatch decreases the arterial concentration of inhaled anaesthetics due to the arterial-to-venous concentration difference. This study tested the hypothesis that in humans, the 'presumed effect-site concentration' (taken as the mid-point between the arterial and superior jugular venous concentrations) of inhaled anaesthetic falls during one-lung (vs two-lung) ...
Davies Allan J - - 2012
Saphenous vein graft aneurysms are an uncommon late complication of coronary artery bypass surgery (CABG). Management strategies include surgical revision, percutaneous closure using covered stent grafts, coil embolisation, vascular plug insertion and ethylene vinyl alcohol copolymer injection. We report a case of a very large saphenous vein graft aneurysm successfully ...
Enders A C - - 2012
The distribution of cytokeratin-positive interstitial trophoblast cells in the endometrium of the macaque during placental development was examined. Such cells are moderately abundant only from the 15th through the 22th day of pregnancy, although there is considerable individual variation. During this period of gestation, interstitial trophoblast cells are distributed in ...
Clausen Caroline C Department of Cardiovascular Radiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark. - - 2013
To evaluate our experience with prophylactic balloon occlusion of the internal iliac arteries as a part of a multidisciplinary algorithm for the management of placenta percreta. Consecutive case series. Setting. Rigshospitalet, Copenhagen University Hospital, Denmark. Sample. Seventeen women with placenta percreta. Demographic characteristics, intraoperative data and outcomes are summarized and ...
Huang Steven Y - - 2012
RATIONALE AND OBJECTIVES: To assess whether dual-energy computed tomography (DECT) multidetector computed tomography (MDCT) angiography improves vascular contrast beyond MDCT angiography and digital subtraction angiography (DSA) while preserving the ability to precisely characterize stenoses, using DSA as reference standard. MATERIALS AND METHODS: This prospective, Health Insurance Portability and Accountability Act-compliant, ...
Kobayashi Naho - - 2012
Background: Inflammation plays a key role in neointimal hyperplasia after an arterial injury. Chronic infectious disorders, such as periodontitis, are associated with an increased risk of cardiovascular diseases. However, the effects of a periodontal infection on vascular remodeling have not been examined. We assess the hypothesis that periodontal infection could ...
Lisboa Luiz Augusto Ferreira - - 2012
BACKGROUND: Percutaneous coronary intervention (PCI) has increased as the initial revascularization strategy in chronic coronary artery disease. Consequently, more patients undergoing coronary artery bypass grafting (CABG) have history of coronary stent. OBJECTIVE: Evaluate the impact of previous PCI on in-hospital mortality after CABG in patients with multivessel coronary artery disease. ...
Wakimoto Masahiro M - - 2012
Near-infrared spectroscopy (NIRS) may be a useful method for monitoring the regional oxygen saturation (rSO(2)) of the lower extremity during endovascular aortic repair. Eighteen patients with thoracic descending and/or abdominal aortic aneurysm were enrolled in this study. NIRS probes were placed bilaterally on the calves. Muscular rSO(2) (mrSO(2)) was monitored ...
Gupta Amit - - 2012
A 52-year-old man presented with complaints of generalized malaise along with pain in left hypochondrium and diarrhea. The color Doppler and subsequent contrast enhanced CT scan revealed changes of portal hypertension and saccular dilatation of splenic vein along with partial thrombus in portal vein and superior mesenteric vein.
Wang Chen - - 2012
BACKGROUND: Soft tissue management around the lower third of the leg and foot presents a considerable challenge to the plastic surgeon. The aim of this research was to investigate the anatomical relationships of artery, nerve, vein and other adjacent structures in the posterolateral region of the calf, and our experience ...
Yau Terrence M - - 2012
Commentary on: Velazquez EJ, Lee KL, Deja MA, et al.. Coronary-artery bypass surgery in patients with left ventricular dysfunction. N Engl J Med 2011;364:1607-16.
Cuper N J - - 2012
Arterial cannulation is a common anaesthetic procedure that can be challenging and time-consuming in small children. By visualizing the position of the radial artery, near-infrared vascular imaging systems (NIRVISs) might be of assistance in arterial cannulation. The present study evaluates the effectiveness of an NIRVIS in arterial cannulation in infants. ...
Yeom Suk Keu - - 2012
We report the successful endovascular repair of a growing chronic type B aortic dissection using an Amplatzer Vascular Plug II. A 44-year-old man, with previous medical history of aortic surgery and stenting complained of vague back pain. An approximately 5-mm entry remained in the stented segment of the aorta on ...
Ryer Evan J - - 2012
OBJECTIVE: To compare the safety and efficacy of coil embolization (COIL) to Amplatzer vascular plug embolization (PLUG) to achieve internal iliac artery (IIA) occlusion prior to endovascular aortiliac aneurysm repair (EVAR). METHODS: Data from consecutive patients who underwent IIA embolization prior to EVAR over a 6-year period (2004-2010) were retrospectively ...
Constenla Iván - - 2012
We present the case of a 63-year-old man with a bovine aortic arch variation, who presented episodes of mild hemoptysis secondary to a 4.5-cm (diameter) aneurysm of the innominate artery that compressed the trachea and obliterated the right subclavian artery. Surgery, performed through a median sternotomy, consisted of a bypass ...
Noda Mitsuaki - - 2012
This article presents an 80-year-old man with pseudoaneurysm of the inferolateral geniculate artery after total knee arthroplasty (TKA). The aim is to report this case and review possible preventive methods of pseudoaneurysm formation after TKA by investigating the relationship between knee arterial anatomy and the TKA procedure. Cadaveric evaluation demonstrates ...
Allan R - - 2012
This study investigated the frequency of an accessory pudendal artery in 15 adult cadavers fixed with formaldehyde solution. The prevalence of accessory pudendal artery varies between 7 and 75% according to the method of identification (imaging studies, microstereoscopic cadaveric dissection, and open and laparoscopic surgeries). Currently, under discussion is the ...
Iyer Ramesh S - - 2012
A 5-month-old previously healthy girl presented to the emergency department with a large palpable nontender mass in the hypothenar soft tissues of her left hand. US revealed a well-demarcated nonvascular soft tissue mass. Subsequent MR imaging showed a rim-enhancing mass with heterogeneous intrinsic signal characteristics. Abscess and necrotic tumor were ...
Kachewar Sushil G - - 2012
PURPOSE: To identify, classify, and study the clinical significance of different patterns of fetal middle cerebral artery peak systolic velocity waveforms that can be seen on Doppler ultrasound. MATERIALS AND METHODS: The patterns of fetal middle cerebral artery (MCA) velocity waveforms encountered in our study (n = 1128) conducted on a rural ...
Raimondi Alejandro - - 2012
Hereditary hemorrhagic telangiectasia (HHT) is an autosomal dominant disorder characterized by the triad of epistaxis, telangiectasia and vascular malformations. Pulmonary vascular complications associated with this disease include pulmonary arteriovenous malformations (AVM) and, less frequently, pulmonary hypertension (PH). We report the case of a patient who presented multiple pulmonary AVM and ...
Cockburn James - - 2012
Transcatheter aortic valve implantation (TAVI) is an effective way to treat patients with symptomatic aortic stenosis when open surgical repair is not feasible or considered too high risk. Large bore vascular access is required (18F-24F), and successful management of this arterial access is the key to overall procedural success. We ...
Wang Qizhang - - 2012
Background: To investigate the correlation between tortuosity of extracranial internal carotid artery (EICA) and intraprocedural complications in patients undergoing carotid artery stenting (CAS). Methods: The study included 244 EICA in 223 patients undergoing CAS. Tortuosity in EICA was measured by the tortuosity index (TI). Multivariate logistic regression was performed to ...
Buehler Paul W - - 2012
Cell-free hemoglobin (Hb) exposure may be a pathogenic mediator in the development of pulmonary arterial hypertension (PAH), and when combined with chronic hypoxia the potential for exacerbation of PAH and vascular remodeling is likely more pronounced. We hypothesized that Hb may contribute to hypoxia-driven PAH collectively as a prooxidant, inflammatory, ...
Jhang Won Kyoung - - 2012
OBJECTIVE: Regarding neo-aortic valve regurgitation (neo-AR) after the arterial switch operation (ASO), the 'trap-door' technique was supposed to be a risk factor due to a distortion of the sinotubular junction (STJ) geometry. Here we report our results of the 'trap-door' technique with a special emphasis on root geometry including the ...
Farrag Azza - - 2012
Coronary artery ectasia (CAE) is usually considered a variant of coronary artery atherosclerosis; however, a definite link has not yet been confirmed. As not all patients with CAE are symptomatic, the real incidence is unknown. The aim of this study was to evaluate the prevalence of CAE and its clinical ...
Shiono Yasutsugu - - 2012
Background: For the identification of functionally significant coronary artery disease, there have not been any dedicated optical coherence tomography (OCT) studies reported previously, although OCT can clearly detect coronary vessel lumina at higher resolution than intravascular ultrasound (IVUS). Methods and Results: OCT and fractional flow reserve (FFR) measurements were performed in 62 ...
Gordhan Ajeet - - 2012
Background and Importance: High-flow spontaneous vertebral arteriovenous shunts in patients with fibromuscular disease (FMD) are rare. Onyx embolizaton of the recipient veins with shunt disconnection and preservation of the affected vertebral artery in a patient with FMD has not been reported. Clinical Presentation: A 59-year-old female presented with progressive dizziness, ...
Bornak Arash - - 2012
The role of embolic protection devices (EPDs) during percutaneous arterial revascularization is still debated. This article discusses the use, the limitations, and issues of the variety of EPDs in different vascular beds, with a particular focus on the lower extremity arterial interventions.
Hino Yutaka - - 2012
OBJECTIVES: We present our experience of total aortic arch replacement. METHODS: Twenty-nine patients (21 males and 8 females; mean age 63.3 ± 13.3 years) with extended thoracic aortic aneurysms underwent graft replacement. The pathology of the diseased aorta was non-dissecting aneurysm in 11 patients, including one aortitis and aortic dissection in 18 ...
Jiang Xiao-Bing - - 2012
ObjectiveCarotid intraplaque hemorrhage may result in rapid worsening of stenosis and thrombus formation leading to stroke in patients with carotid atherosclerosis. The purpose of this study was to assess the association of the lesional expression of matrix metalloproteinase (MMP)-9 with carotid plaque and intraplaque hemorrhage in a swine model.MethodsCarotid atherosclerosis ...
Romeih Soha - - 2012
Complete assessment of the source of pulmonary blood supply and delineation of the anatomy of pulmonary arteries are essential for the management and prognostic evaluation of pulmonary atresia (PA) patients. Invasive cardiac catheterization is considered the gold standard imaging modality to achieve this. We investigated the role of contrast enhanced ...
Ducruet Andrew F - - 2012
BackgroundThe Pipeline embolization device has been used successfully to treat intracranial aneurysms with difficult morphologies. However, the need for dual antiplatelet therapy has limited its use after subarachnoid hemorrhage.Case reportA 42-year-old woman with a ruptured dissecting aneurysm of her dominant vertebral artery (V4) was successfully treated by Pipeline embolization with ...
Kalhor Morteza - - 2012
The purpose of this cadaveric study was to clearly define the blood supply to the femoral head to help further reduce the incidence of iatrogenic avascular necrosis (AVN). Thirty-five hips of twenty-eight fresh cadavers were injected with colored silicone. Anterior and posterior dissection was performed to assess the vessels contributing ...
Vasović Ljiljana - - 2012
OBJECTIVE: Although complex and variable, adult cerebral angioarchitecture has its origins in embryologic development where normal components, variations and abnormalities evolve from modifications of primitive vessels. The study of morphological features of the basilar fenestrations in prenatal and postnatal period and associated variants and/or pathologies was the aim of this ...
Durand Eric - - 2012
Aims: To assess the impact of the composition in L- and D- of lactic acid stereo copolymers without drug elution on the in situ behaviour of prototype stents in terms of biomechanics and biocompatibility. Methods and results: PLA50, 75, and 92 stereo-copolymer stents (L/D lactic acid ratio from 1 to ...
Wilson Gregory J - - 2012
Aims: This study evaluated vascular compatibility of the novel platinum chromium alloy Element™ stent platform delivering abluminal everolimus from a poly-lactide-co-glycolide bioabsorbable polymer (SYNERGY™ stent), currently undergoing clinical trial, compared with the PROMUS® (XIENCE V) and bare metal and polymer-only Element™ stents. Methods and results: Stents (n=161) were implanted one ...
Wong L F - - 2012
The aim of this study was to determine the correlation between increasing pulmonary embolism thrombus load and right ventricular (RV) dilatation as demonstrated by CT pulmonary angiography (CTPA) and to assess the thrombus load threshold which indicates impending RV decompensation. 2425 consecutive CTPAs were retrospectively analysed. Thrombus load using a ...
Sekiguchi Makoto - - 2012
We report a case of chronic total occlusion (CTO) of the left anterior descending artery, which was treated by percutaneous coronary intervention using a retrograde approach via an extremely tortuous right ventricular branch of the right coronary artery. New concept guidewires and a channel dilator were advanced by delicate manipulation ...
Lehmkuhl Lukas H J - - 2012
To evaluate for the first time the degree of compliance between conventional multislice computed tomography (MSCT) and three-dimensional rotational angiography (3D-RA) in measuring relevant dimensions of the aortic annulus, the aortic root and the thoracic aorta in patients undergoing TA-AVI. Twenty-seven patients (82 ± 11 years) with severe aortic stenosis received contrast enhanced ...
Zapata-Sudo Gisele - - 2012
In this study, we examined the effects of LASSBio-965 (N-[2-(3,4-dimethoxyphenyl) ethyl]-benzenesulfonamide), a compound designed as a simplified structure of a non-selective phosphodiesterase 4 inhibitor, on vascular smooth muscle in vitro as well as in a rat model of monocrotaline (MCT)-induced pulmonary arterial hypertension. LASSBio-965 (50mg/kg) treatment caused a significant decrease ...
Ozaki Yuichi - - 2012
Coronary artery perforation is a rare but catastrophic complication of percutaneous coronary intervention (PCI). PCI for chronic total occlusion (CTO) lesions is associated with lower procedural success rate and higher incidence of complications as compared with non-CTO coronary vessels. Here we report a rare case of a patient who developed ...
Yoshino Masanori - - 2012
Visualization of the small arteries around a giant intracranial aneurysm remains challenging, even with three-dimensional (3D) rotational angiography. Here we present a new method with the increased matrix size to visualize three-dimensional course of the anterior choroidal artery around a giant aneurysm to help estimate the risk of intraoperative complications.
Tang Hui - - 2012
Quantitative information about the geometry of the carotid artery bifurcation is relevant for investigating the onset and progression of atherosclerotic disease. This paper proposes an automatic approach for quantifying the carotid bifurcation angle, carotid area ratio, carotid bulb size and the vessel tortuosity from multispectral MRI. First, the internal and ...
Kretz Benjamin - - 2012
BACKGROUND: Any obstacle in the contralateral artery has long been considered a high risk for carotid surgery. Here, we report the results of a monocentric, continuous, consecutive, prospective series and present a review of the literature. METHODS: All carotid endarterectomies performed under locoregional anesthesia in our department between 2003 and ...
Caruso Paola P Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, - - 2012
Despite improved understanding of the underlying genetics, pulmonary arterial hypertension (PAH) remains a severe disease. Extensive remodeling of small pulmonary arteries, including proliferation of pulmonary artery smooth muscle cells (PASMCs), characterizes PAH. MicroRNAs (miRNAs) are noncoding RNAs that have been shown to play a role in vascular remodeling. We assessed ...
Crystal Matthew A - - 2012
Isolation of the right subclavian artery (RSCA) from the pulmonary artery is a rare anomaly of the aortic arch. We report a case of an isolated RSCA from the right pulmonary artery that was discovered at the time of device occlusion of a patent arterial duct. We review the literature ...
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