Search Results
Results 301 - 350 of 1017
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Brock C S - - 2005
The aim of this study was to assess simplified methods for deriving input functions for estimating glucose metabolism using 18F-FDG-PET. Nine glioma patients underwent paired 18F-FDG-PET scans as part of a phase II study and the data used to estimate the metabolic rate of glucose (MRGlu) using a population-derived input ...
de Waard Marieke M - - 2005
BACKGROUND: Recent advances in the form of foam sclerotherapy have extended the indications for sclerotherapy in the treatment of varicose veins. OBJECTIVES: (1) To see if perforator veins can be closed by using foam sclerotherapy; (2) to evaluate whether using foam sclerotherapy for treatment of incompetent perforator veins has an ...
Kelly Anne-Maree - - 2005
To validate a previously derived venous pCO2 (pvCO2) cut-off for ruling out arterial hypercarbia in patients with chronic obstructive pulmonary disease (COPD), matched arterial and venous blood gas samples were taken from a convenience sample of patients who presented to the Emergency Department (ED) with COPD deemed by their treating ...
Schreiber S J - - 2005
BACKGROUND: Recently a causal relation between internal jugular vein valve incompetence (IJVVI) and transient global amnesia (TGA) has been suggested. IJVVI is postulated to provoke a transient mesiotemporal ischaemia by venous congestion. This mechanism requires a patent venous pathway from the affected IJV through the transverse sinus, confluens, straight sinus ...
Bates Shannon M - - 2005
The limitations of traditional anticoagulants, heparin and warfarin, have prompted the development of new anticoagulant drugs for prevention and treatment of both venous and arterial thromboembolism. After a brief review of thrombogenesis and its regulation, this paper focuses on new anticoagulant agents in more advanced stages of clinical testing.
Li Hui - - 2005
OBJECTIVE: To establish preliminarily the different diagnostic criteria for peripancreatic arterial and venous invasion in pancreatic carcinoma by comparing their multidetector-row computed tomography (MDCT) appearances with surgical exploration. METHODS: Among 101 patients with pancreatic carcinoma examined by MDCT, 54 candidates accepting surgery were preoperatively evaluated for vascular invasion based on ...
Diehl Stefanie - - 2005
Vascular malformations cause discomfort and pain in children and are often associated with skeletal hypertrophy. Their molecular basis is poorly understood. Ephrin ligands and Eph receptor tyrosine kinases are involved in embryonic vascular development. In mice, some ephrin/Eph family members show a complementary expression pattern in blood vessels, with ephrinB2 ...
Wong Amy P - - 2005
OBJECTIVE: We analyzed the phenotypic and functional differences between venous and arterial smooth muscle cells (SMC) and the role of decorin in modulating these differences. METHODS AND RESULTS: SMC were isolated from the jugular veins and carotid arteries of male white New Zealand rabbits. Venous SMC demonstrated increased proliferation (2-fold, ...
Urquhart Andrew C - - 2005
OBJECTIVE: To establish if venous and arterial parathyroid hormone (PTH) levels are similar during minimal access parathyroid surgery. DESIGN: Prospective study. SETTING: Marshfield Clinic, a large multispecialty tertiary care referral center in central Wisconsin. PATIENTS: All patients who underwent minimally invasive parathyroid surgery over a 10-month period. RESULTS: Fifteen consecutive ...
Pahl Madeleine Valdes - - 2005
Ischemia and reperfusion in myocardial infarction and stroke are associated with upregulation of leukocyte adhesion molecules, which contributes to tissue injury by facilitating leukocyte adhesion and infiltration in the affected tissues. Surgical repair of the abdominal aortic aneurysm involves clamping and declamping of the aorta, which necessarily results in ischemia ...
Alperin N - - 2005
Idiopathic intracranial hypertension (IIH) is characterized by increased ICP without evidence for intracranial mass lesion. Although the pathogenesis remains unknown, some association was found with intracranial venous thrombosis. To our knowledge, the extracranial venous drainage was not systematically evaluated in these patients. This study compared extracranial cerebral venous outflow in ...
Solheim Ole - - 2005
Transient global amnesia (TGA) is a disorder of unknown aetiology, characterized by sudden loss of anterograde memory, in the absence other neurological signs or symptoms, followed by complete recovery in less than 24h. Precipitating actions such as strenuous physical activity or valsalva-like manoeuvres are frequently reported. Since first described in ...
Crabtree Vincent - - 2005
Venox is a propriety Venous Oximetry system, capable of measuring peripheral venous oximetry. In this ongoing study, Venox is being compared against mixed central venous oximetry during human cardiac surgery, with Fibre optic reflectance spectrophotometry being used as the gold standard, placed in the pulmonary artery. A background review of ...
Koshima Isao - - 2005
The authors describe, in the first report of this type of replantation surgery, a high success rate using delayed venous anastomosis in 16 consecutive distal phalangeal replantations under digital block. Among these replantations, seven fingers (43.8 percent) showed postoperative venous congestion and five fingers were reoperated on with delayed venous ...
Sukop A - - 2005
The authors describe modified thumb replantation technique. With this technique it is possible to avoid extensive mobilization of the digital arteries as well as incisions, particularly at the distal thumb phalanx, and therefore reduce further damage of the amputated part. Prior to the osteosynthesis a venous graft is harvested from ...
de Saint Martin L - - 2004
OBJECTIVE: To search for a link between Chlamydia pneumoniae serological status and venous thromboembolic disease. METHODS: From March 1992 to October 1999, we conducted a cross-sectional hospital-based study of consecutive unselected outpatients referred to us for clinical suspicion of venous thromboembolism. We compared the Chlamydia pneumoniae serological status with respectively, ...
Bleeker Michiel W P - - 2005
Physical inactivity or deconditioning is an independent risk factor for atherosclerosis and cardiovascular disease. In contrast to exercise, the vascular changes that occur as a result of deconditioning have not been characterized. We used 4 wk of unilateral lower limb suspension (ULLS) to study arterial and venous adaptations to deconditioning. ...
Knudson M Margaret - - 2004
PURPOSE OF REVIEW: The trauma population is at increased risk of venous thromboembolic disease, a potentially preventable cause of mortality and morbidity. Although the association between trauma and venous thromboembolism has been recognized for more than a century, there is still great variability in the clinical practices with respect to ...
Lachiewicz P F - - 2004
The optimal characteristics of pneumatic compression for mechanical prophylaxis of thromboembolism after total knee arthroplasty (TKA) are not known. Our study compared two methods of calf compression, with the hypothesis that the device which provided a larger increase in peak venous velocity would produce a lower rate of thromboembolism. We ...
Boekstegers Peter - - 2004
Retroinfusion of the coronary veins has gained attention for therapeutic approaches which target drugs, genes or cells to ischemic myocardium. Besides anatomy of the coronary venous system, the pressure flow relationship during retroinfusion and the efficacy of pressure-regulated selective retroinfusion for targeted delivery of drugs is reported. Moreover, we describe ...
Raju Seshadri - - 2004
New technology is transforming our approach to venous disease. Once considered taboo for fear of causing deep venous thrombosis, surgical or endovenous intervention in the deep venous system is now known to be safe. Newer techniques allow minimally invasive procedures, many carried out on an outpatient basis. Traditional conservative regimens ...
Kawai Kenichiro - - 2004
Arterial and venous anatomy and their relation to the anterolateral thigh flap were examined in 10 specimens of six fresh cadavers in which radiopaque materials were injected into both the arterial and venous systems. Territories and positions of individual perforating arteries were measured, and the venous drainage pathway of the ...
Palomino J C - - 2004
We are presenting the case of a 63 year-old man with a dural arteriovenous malformation of the transverse sigmoid sinus who developed focal deficits followed by less localized symptoms such a disorientation, lethargy and eventually comatose status. Initial cerebral angiography showed retrograde filling of the cortical and deep cerebral venous ...
Sanelli Pina C - - 2004
RATIONALE AND OBJECTIVES: Deconvolution-based software can be used to calculate quantitative maps of cerebral blood flow (CBF), cerebral blood volume (CBV), and mean transit time (MTT) from first-pass computed tomography perfusion (CTP) datasets. The application of this software requires the user to select multiple input variables. The purpose of this ...
Leyvi Galina - - 2004
OBJECTIVE: Activated coagulation times (ACTs) are widely used for monitoring anticoagulation during cardiac surgery. Significant variability of this test is well known. Variability in test results was studied, which may arise from the sample drawing site. DESIGN: Prospective study. SETTING: University hospital. PARTICIPANTS: Sixty-five patients scheduled for surgery requiring cardiopulmonary ...
Kelly Anne-Maree - - 2004
OBJECTIVE: This study aims to determine the extent of agreement between venous and arterial bicarbonate for a group of emergency department patients with respiratory or metabolic illness requiring blood gas analysis as part of their evaluation. METHODS: This prospective study of patients who were deemed by their treating doctor to ...
Kim Seung-Jung - - 2004
Arteriovenous polytetrafluoroethylene (PTFE) grafts used for hemodialysis often fail as the result of myointimal hyperplasia with vascular smooth-muscle-cell (SMC) proliferation. The stenotic lesions occur primarily at the graft-vein anastomosis and less frequently at the graft-artery anastomosis. To explore the potentials of pharmacologic agents in preventing hemodialysis-graft stenosis, we first examined ...
Davison Steven Paul - - 2004
The term venous thromboembolism refers to a spectrum of disease that includes deep venous thrombosis and pulmonary embolism. Both deep venous thrombosis and pulmonary embolism are often clinically silent and thus difficult to diagnose, which leads to a substantial delay in treatment that results in high rates of morbidity and ...
Ceulen Roeland - - 2004
Chronic venous leg ulceration, which tends to recur, is difficult to treat and therefore needs special diagnostic and therapeutic care. We recently treated a 45-year-old patient with an obstruction of the left external iliac vein, caused by deep venous thrombosis. We would like to propose that, although rare, the existence ...
Reddi B A J - - 2005
The circulatory control system is driven partly by factors relating to the arterial side and partly by factors relating to the venous side. Students are generally provided with a conceptually clear account of the arterial side, based on sound homeostatic mechanisms of negative feedback from a well-defined error signal, arterial ...
Akyürek Mustafa - - 2004
A case of nearly complete amputation of the alar wing is presented whereby a successful arterial revascularization was accomplished using an arterial rerouting technique. Venous stasis was overcome by means of stab-wound wiping. An excellent result was obtained following complete survival of the revascularized segment. The authors conclude that microvascular ...
Lettino M - - 2004
Thrombin converts fibrinogen to fibrin and is the most powerful activator of platelets thus playing a crucial role in arterial and venous thrombosis. The limitations of heparin, largely used in the therapy of arterial and venous thromboembolism, has prompted the development of new antithrombotic drugs, able to directly inhibit thrombin. ...
Bachleda Petr - - 2004
The function of an arteriovenous (av) fistula for haemodialysis may be complicated by manifestation of peripheral venous hypertension, which results from the arterial blood flow through the venous system into the periphery of the upper extremity. Its development is most typically caused by a proximal forearm av-fistula, as, in addition ...
Hoell T T Department of Neurosurgery, Bergmannstrost Hospital, Halle; Germany - - - 2004
Venous aneurysms so-called isolated cerebral varix, are known as a related pathology in arteriovenous malformations (AVM) due to the arterial pressure on venous drainage (16). They are also observed in combination with developmental venous anomalies (DVA) (2,4,8,15). However, isolated varix is a rare entity (1,7,11,13). They appear in most cases ...
Park J - - 2004
BACKGROUND: The anterior interhemispheric approach is a well-known operative technique for a distal anterior cerebral artery (ACA) aneurysm. However, a frontal parasagittal bridging vein is occasionally sacrificed in this approach, creating a risk of postoperative venous infarction. METHOD: To evaluate the risk of venous infarction, the current study investigated the ...
Gutierrez Arturo - - 2004
The pattern of venous drainage from a dural arteriovenous fistula (DAVF) has been shown to affect the natural history of these lesions. Angioplasty and stent placement of the dural sinuses have been described to improve outflow in venous hypertensive states and may improve the venous drainage pattern from a DAVF. ...
Sieggreen Mary Y - - 2004
PURPOSE: To provide physicians and nurses with an overview of the pathophysiology, assessment, diagnosis, and treatment of arterial insufficiency and ulceration. TARGET AUDIENCE: This continuing education activity is intended for physicians and nurses with an interest in managing patients with arterial insufficiency and ulceration. OBJECTIVES: After reading the article and ...
Yagmurlu Banu - - 2005
Vascular malformations are infrequent causes of aqueductal stenoses, developmental venous anomaly (DVA) being the rarest among them. DVAs, also known as venous angiomas, are congenital in origin and characterized by dilatation of vessels in the superficial and deep venous system. Although they are usually clinically silent, they can be complicated ...
Gale Steven S - - 2004
Chronic deep venous insufficiency remains a major health problem in the United States and worldwide. Selected patients benefit from direct deep vein valve repair or valve transplantation; however, most are not candidates for these procedures. Experience with the bovine monocusp venous valve surgically inserted into the common femoral vein (CFV) ...
Cesarone M R - - 2004
A gel including aescin, essential phospholipids (EPL), and heparin (EG) has been used for many years for local treatment of venous, microcirculatory alterations (varicose veins, chronic venous insufficiency). Bruises, swelling, thrombophlebitis, and contusions are effectively treated with this compound. The aim of this study was the evaluation of the efficacy ...
Simsek S - - 2004
We describe a 61-year-old patient who had been suffering from chronic ulcers of both legs for 18 months. Initially, his condition was diagnosed as ischaemic because of an ankle-brachial index of 0.6, as confirmed by additional angiography. A successful femoro-infragenual bypass procedure was performed, but the ulcers increased in size ...
Chan Louis Yik-Si - - 2004
BACKGROUND: This study was designed to evaluate whether cord blood acidosis is more likely in infants born after successful external cephalic version. METHODS: This retrospective cohort study included 89 singleton deliveries with successful version performed over a 2-year period. Their cord blood acid-base parameters were compared to 89 pregnancies with ...
Barnea O - - 2004
Erectile dysfunction may be caused by hormonal, neural, arterial, or venous factors. Cavernosometry is used to test for venous leaks. The outcome of surgical procedures attempting to block off veins that allow blood to leak from the penile tissues is still poor. This procedure commonly follows a diagnostic procedure based ...
Vijayaraghavan K S - - 2004
Chronic wounds in which arterial and venous pathology coexist are relatively uncommon. The authors report a case of a diabetic lady who presented with claudication pain and a chronic nonhealing lower extremity wound of more than 6 months. In these patients, it is mandatory to treat the arterial insufficiency first, ...
Ohta Hajime - - 2004
BACKGROUND AND PURPOSE: The purpose of this study was to evaluate the correlation between appearance of angiographic early venous filling during intra-arterial reperfusion therapy and posttherapeutic hemorrhagic complications. METHODS: For the past 7 years, 104 patients prospectively underwent superselective local angiography via a microcatheter before and during intra-arterial reperfusion therapy ...
Herold Thomas - - 2004
RATIONALE AND OBJECTIVES: To assess the influence of injection rates and volumes on the arrival time of contrast material (CM) in the common carotid artery, the jugular vein and the resulting arterial-venous transit time. Additionally the relationship between injection parameters and the extent of a CM plateau was evaluated. MATERIALS ...
Demirsoy E - - 2004
AIM: Repair of atrial septal defect (ASD) via minimal access has been the preferred method to improve cosmesis and fast rehabilitation. A 2-stage single venous cannula introduced via the femoral route allows better vision of the surgical field and improves surgical acts through a limited incision. METHODS: From February 1999 ...
van de Ven A C - - 2004
BACKGROUND: The aim of the current study was to investigate whether the StethoDop can serve as a valid and reproducible instrument for measuring the ankle-brachial index (ABI) and assessing venous reflux, even when used by inexperienced investigators, in comparison with the classic Doppler. METHODS: I) During four weeks, four ankle-brachial ...
Schaller B - - 2004
Cerebral venous occlusion represents an often underdiagnosed cause for acute or slowly progressive neurological deterioration. The underlying pathophysiological basis is not well understood, but is different from those of arterial occlusion reflecting therefore different anatomical and physiological features of the cerebral venous system. Extensive collateral circulation within the cerebral venous ...
Higgs David - - 2004
The use of the A-V Impulse System of foot pumps and graduated compression stockings to reduce the incidence of thrombo-embolic disease after total hip arthroplasty is well recognised. It is not known if they have a synergistic effect as all clinical trials have used them in combination. We examined the ...
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