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Davison Steven Paul SP Division of Plastic Surgery, Georgetown University Medical Center, Washington, D.C., USA. - - 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 ...
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 ...
Ichinose Akihiro - - 2004
Whether or not multiple venous anastomoses reduce the risk of free-flap failure is a subject of controversy. We report here, for the first time, on the importance of selecting 2 separate venous systems of the flap for dual anastomoses. The efficacy of multiple anastomoses was verified through a retrospective review ...
Duroure F - - 2004
Lip amputations are rare, and microsurgical replantation must be systematically tried to restore form and function in one step. The authors present a series of three cases. Revascularization of the amputated segment was obtained by arterial anastomosis with the corresponding labial coronary artery. No venous anastomosis was carried out, because ...
Kwei Stephanie - - 2004
Venous arterialization occurs when a vein segment is transposed as a bypass graft into the arterial circulation, resulting in a structural and functional reorganization of the vascular wall in response to the new local biomechanical environment. Although the anatomical changes of venous arterialization have been well characterized, the molecular mechanisms ...
le Noble Ferdinand - - 2004
Formation of the yolk sac vascular system and its connection to the embryonic circulation is crucial for embryo survival in both mammals and birds. Most mice with mutations in genes involved in vascular development die because of a failure to establish this circulatory loop. Surprisingly, formation of yolk sac arteries ...
Linkins Lori-Ann - - 2003
The limitations of heparin and warfarin have prompted the search for new anticoagulants for the prevention and treatment of venous and arterial thromboembolism. Although many such agents are in development, only a few have reached phase II or higher levels of clinical testing. This article reviews venous and arterial thrombogenesis, ...
Linkins Lori-Ann - - 2003
A variety of new anticoagulants for the prevention and treatment of venous and arterial thromboembolism are under development. Designed to overcome the limitations of heparin and vitamin K antagonists, these new agents are at various stages of clinical testing. This paper reviews venous and arterial thrombogenesis, discusses the regulation of ...
Kahle B - - 2003
The ratio of volume flow in the common femoral vein and artery denoted as venous-arterial Flowindex (VAFI) is significantly increased in venous insufficiency according the clinical grade of the disease. This study was done to investigate the reliability and reproducibility of VAFI as quantitative pattern. In 43 patients with varicose ...
Makariou Erini - - 2003
Venous anomalies are rarely seen with cystic hygromas. We describe an unusual case of cystic hygroma of the neck associated with a saccular venous aneurysm that was increasing in size. A multi-modality examination of the neck-including CT, Doppler sonography, and MR imaging-revealed multiloculated cystic lesions bilaterally with predominance on the ...
Min Robert J - - 2003
Physicians unfamiliar with venous insufficiency, particularly disorders of the superficial venous system, often underestimate the complexity of the problem and the importance of proper evaluation before initiating treatment. In addition to a directed history evaluation and physical examination, additional evaluation with use of a variety of noninvasive diagnostic instruments, including ...
van Bemmel Cornelis M - - 2003
Blood pool agents (BPAs) for contrast-enhanced (CE) magnetic-resonance angiography (MRA) allow prolonged imaging times for higher contrast and resolution. Imaging is performed during the steady state when the contrast agent is distributed through the complete vascular system. However, simultaneous venous and arterial enhancement in this steady state hampers interpretation. In ...
Torres-Vázquez Jesús J Laboratory of Molecular Genetics, NICHD, NIH, Building 6B, Room 309, 6 Center Drive, Bethesda, MD 20892, - - 2003
The vertebrate vascular system is essential for the delivery and exchange of gases, hormones, metabolic wastes and immunity factors. These essential functions are carried out in large part by two types of anatomically distinct blood vessels, namely arteries and veins. Previously, circulatory dynamics were thought to play a major role ...
Ray Joel G - - 2003
The optimal drug for the prevention of venous thromboembolism is one that is efficacious, associated with minimal bleeding risk, and easy to administer. Statins fulfill the latter two criteria, but their efficacy remains unproved. By examining the association between dyslipidemia and venous thromboembolism, as well as the evidence that statins ...
Khilnani Neil M - - 2003
The most important part of effectively treating a patient with superficial venous insufficiency is making an accurate diagnosis of its cause and creating a map of the incompetent pathways. A history and physical examination can provide a great deal of information; however, a duplex ultrasound examination can definitively identify the ...
Gonsalves Carin F - - 2003
In 1837, Piorry, a French professor of medicine stated, "It is rather difficult to understand why the investigation of veins has been passed over almost in silence, while such a great diagnostic value has been attached to the investigation of arteries." Even today, our understanding of venous disease pales in ...
Chu Yuan-Chih - - 2003
BACKGROUND AND PURPOSE: Arterial blood gas (ABG) analysis is useful in evaluation of the clinical condition of critically ill patients; however, arterial puncture or insertion of an arterial catheter may cause many complications. This study evaluated whether pH, partial pressure of carbon dioxide (PCO2) and bicarbonate (HCO3-) values of venous ...
Oderich Gustavo S - - 2003
Klippel Trenaunay syndrome is usually managed conservatively with surgery reserved for patients with symptomatic but mild cosmetic deformity or persistent venous hypertension despite nonoperative measures. Deep venous reconstruction is necessary in a small group of patients who present with significant chronic venous insufficiency due to hypoplastic, absent, or occluded deep ...
O'Donnell Martin - - 2003
BACKGROUND: Numerous trials and meta-analyses have shown that extended out-of-hospital prophylaxis with low-molecular-weight heparin reduces asymptomatic and symptomatic venous thromboembolism after total hip arthroplasty. We hypothesized that knowledge of the results of screening tests may have resulted in overdiagnosis of symptomatic venous thromboembolism in many of these studies. The purpose ...
Ioannou C V - - 2003
AIM: To investigate the anatomic distribution of vein reflux in limbs with healed or active ulcers (CEAP V and VI). METHODS: Sixty limbs (58 patients) belonging to CEAP classes V and VI were identified from 798 limbs (519 patients) with ultrasonically proven chronic venous insufficiency (CVI). Age, gender, duration of ...
Burkart David J - - 2003
PURPOSE: To prospectively assess the feasibility, risk profile, and effect on fibrinogen levels of combination tenecteplase (TNK) and eptifibatide in transcatheter thrombolysis for peripheral arterial and venous thromboocclusive disease. MATERIALS AND METHODS: Sixteen consecutive patients (seven men, nine women) seen at our institution between March and August 2002 with arterial ...
Kirkeby-Garstad Idar - - 2003
We studied 150 adult cardiac surgery patients to assess visualization of the venous cannula and the venous system by intraoperative transesophageal echocardiography and to register the incidence of cannulation of hepatic veins. The quality of images, the dimensions of the venous system, the position of the venous cannula, and the ...
Ayarragaray Javier Eduardo Ferrari JE Center for Study and Treatment of Renal Diseases, Department of Vascular and Endovascular Surgery, Buenos Aires, Argentina. - - 2003
The most common cause of graft failure in patients undergoing hemodialysis is outflow venous stenosis. Long-term compromise of venous central trunks must be resolved. This study was undertaken to evaluate an unusual surgical option, bypass to decompress a long-term vascular graft to the femoral vein, improving venous outflow, alleviating symptoms ...
Hyers Thomas M - - 2003
Venous thromboembolism, including deep vein thrombosis and pulmonary embolism, represents a significant source of morbidity and mortality in the United States and worldwide. The pharmacologic management of venous thromboembolic disease has witnessed significant advances since oral anticoagulant and heparin therapies began to gain widespread use more than 50 years ago. ...
Golledge J - - 2003
BACKGROUND: varicose veins are present in up to 40% of the population. They may be associated with considerable morbidity. Around 70% of patients with chronic venous insufficiency have evidence of superficial venous incompetence on duplex imaging. METHODS: in this publication we review the evidence available regarding the pathogenesis of varicose ...
Cheung Ning - - 2003
PURPOSE: To define the normal and variant venous anatomy in the human orbit. METHODS: Orbital dissections, focusing on the venous system, were performed on 17 formalin-preserved human cadavers (34 orbits) and two fresh orbits. Dissections were carefully documented photographically. Results were compared with those in previous reports on the venous ...
Sato Thomas N - - 2003
Vascular development is a complex process. In the past decade, significant advances have been made in the understanding of molecular mechanisms underlying vascular system development. Most recently, a model describing a signaling pathway that governs the differentiation of arteries and veins has emerged. Furthermore, the idea that angiogenesis of arteries ...
Hattori Yasunori Y Department of Orthopedic Surgery, Ogori Daiichi General Hospital, Yamaguchi University School of Medicine, 862-3 Shimogo, Ogori, Yoshikigun, Yamaguchi 754-0002, Japan. - - 2003
Adequate venous outflow is the most important factor for successful fingertip replantation. The authors have attempted venous anastomosis in all cases of fingertip replantation to overcome postoperative congestion. In this article, the significance of venous repair for fingertip replantation is described from the authors' results of 64 complete fingertip amputations ...
Gori Tommaso - - 2003
This study investigated whether oral supplemental folic acid can prevent the development of nitrate tolerance and whether it has different effects on the arterial and venous systems. Twenty-four healthy male volunteers received either placebo or folic acid (10 mg/d) for 14 days. Additionally, all subjects underwent concurrent transdermal nitroglycerin therapy ...
Shukla Vershalee - - 2003
This is the second of two articles designed to provide detailed user-friendly schematics of the adult dural vascular anatomy. It supplements the first article on the intrinsic meningeal arteries and veins by describing the dural venous sinuses along with their three remaining connections: to the brain, to the diploë, and ...
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