Search Results
Results 251 - 300 of 1023
< 1 2 3 4 5 6 7 8 9 10 11 >
Thorisson Hjalti M - - 2007
Chronic venous insufficiency (CVI) is an exceedingly common and underdiagnosed disorder with a wide range of symptoms and prognosis ranging from cosmetic issues to skin ulceration with tissue loss. Ultrasound plays a pivotal role in the diagnosis, classification, and guidance of percutaneous treatment of CVI. It is therefore of critical ...
Prakash, Shawn
Arterial base deficit is used in assessing trauma patient oxygen debt, life saving intervention requirements, resuscitation adequacy, and mortality risk. Venous blood samples are simpler and less painful to obtain than arterial samples. Theoretically, venous base deficit values might substitute for arterial values. Methods: 8 anesthetized, ventilated dogs were hemorrhaged ...
Bergan John - - 2007
Chronic venous disease (CVD) is common. Its manifestations include varicose veins; skin changes such as dermatitis, hyperpigmentation, and lipodermatosclerosis; and chronic leg ulcers. Recent advances in the understanding of its pathophysiology have shown how molecular mechanisms in the inflammatory cascade are involved in these diverse findings. Venous hypertension and associated ...
Sam R C - - 2007
OBJECTIVES: This group has previously reported that UK Asians are significantly less likely to undergo surgery for lower limb venous disease than age and sex matched Caucasians. The aim of the present study was to estimate the prevalence of lower limb chronic venous disease (CVD) in the UK Asian male ...
Christodoulou C - - 2007
The antiphospholipid (Hughes) syndrome (APS) is characterized by recurrent arterial or venous thromboembolism, or pregnancy loss, in association with antiphospholipid antibodies. These antibodies may be associated with premature or accelerated atherosclerosis and emerging evidence supports the concept of a vasculopathy in the APS that may lead to arterial stenotic lesions, ...
Slavin Richard E - - 2007
The authors review 20 cases of segmental arterial mediolysis (SAM) including 3 newly reported cases. SAM developed in areas of vascular distention in 2 of the latter cases: 1 in utero in the heart of a recipient of a twin transfusion syndrome and the other in the jejunum secondary to ...
Rathbun Suman W - - 2007
Chronic venous insufficiency (CVI) results from venous hypertension secondary to superficial or deep venous valvular reflux. Treatment modalities are aimed at reducing venous valvular reflux, thereby inhibiting the ensuing pathologic inflammatory process. Compression therapy using pumps, bandaging, and/or graded compression stockings is the mainstay of treatment for CVI. Compression therapy ...
Gatt Alex - - 2007
It has been recognized, since the first description of the disease, that arterial and venous thrombosis are common in patients with homocysteinuria. Interest in the condition increased with reports from a large number of mainly retrospective studies showing that mildly elevated homocysteine levels are also associated with venous thromboembolism (VTE), ...
Corno Antonio F - - 2007
In recent years substantial progress occurred in the techniques of cardiopulmonary bypass, but the factor potentially limiting the flexibility of cardiopulmonary bypass remains the drainage of the systemic venous return. In the daily clinical practice of cardiac surgery, the amount of systemic venous return on cardiopulmonary bypass is directly correlated ...
Jamal S - - 2007
Protein Losing Enteropathy (PLE) is a syndrome associated with several diseases affecting the gastrointestinal system. Recent comprehensive reviews can be found in eMedicine and Gastroenterology. Treatment by surgery, lympho-venous anastomosis, excision of lymphangiectatic small bowel and gastrectomy and transplantation of the small intestine, depending upon the cause, have all been ...
Peden Eric - - 2007
Chronic venous insufficiency continues to be a major source of disability and cost, with accompanying socio-economic burdens. Incompetent perforator veins play a significant role in chronic venous insufficiency. This article describes the technique of radiofrequency ablation of incompetent perforating veins for patients with chronic venous insufficiency. Patient evaluation, the evolution ...
Rennie M Y - - 2007
This study evaluates microcomputed tomography (micro-CT) as a method to obtain quantitative three-dimensional (3D) information on the arterial and venous vasculature of the mouse placenta. Surface renderings at embryonic days (E) 13.5, 15.5, and 18.5 (full term) revealed that the arterial and venous vasculature branched within the chorionic plate whereas ...
Delis Konstantinos T - - 2007
Klippel-Trenaunay syndrome (KTS) is a complex congenital anomaly featuring two or more of the following: (1) capillary malformations (port-wine stains), (2) soft tissue or bony hypertrophy (or both), and (3) varicose veins or venous malformations. With the purpose of determining the actual significance of venous impairment in patients with KTS, ...
Koshima Isao - - 2008
Reconstructive microsurgery is now in a new stage of supermicrosurgery. With this technique, very tiny (0.3mm) vascular anastomoses are possible. In this paper, we describe two cases of successful fingertip replantations employing arteriole (terminal branch of digital artery) anastomoses, the arteriole graft being obtained from the same fingertip defect, reverse ...
Sukop A - - 2007
The arterial system of fingers is anatomically well described, and so, usually no difficulties arise during its preparation and the making of anastomoses in replantation surgery. Difficulties may occur, however, during manipulation in the dorsal vascular bed of fingers, known only as a random venous network. There are minimal references ...
Sutaria R - - 2007
OBJECTIVE: The correlation between ovarian venous insufficiency and lower limb venous insufficiency remains poorly understood. Clinically, incompetent ovarian veins in association with lower extremity varicose veins are suspected when leg varicose veins are found in atypical distributions. Such distributions include upper lateral or posterior thigh, on the buttocks, crossing the ...
Zhang Honglei - - 2007
A curved urethane rf-welded leg wrap with multi-compartment inflation was developed for optimal thigh compression to suppress venous enhancement during peripheral magnetic resonance angiography (MRA). In 49 patients with suspected peripheral vascular disease, bilateral thigh leg wraps were inflated to 60 mm Hg just prior to mask imaging of 3D ...
Christenson J T - - 2007
OBJECTIVES: Popliteal venous aneurysms (PVA) are rare, but represent a significant potential source of thromboembolus. Most often the patients present with pulmonary embolism, which can also be detected in patients presenting with chronic venous insufficiency. METHODS: Three patients without any clinical evidence of pulmonary emboli were diagnosed by venous duplex ...
Gülşen Salih - - 2007
Venous angiomas were found to be the most common cerebral vascular malformations, composing 63% of such lesions in two autopsy series. Annual bleeding risk associated with venous angiomas is about 0.22 % per year. Venous angiomas are generally silent lesions because of their dynamic features, and are low flow and ...
Qaseem Amir - - 2007
This guideline summarizes the current approaches for the diagnosis of venous thromboembolism. The importance of early diagnosis to prevent mortality and morbidity associated with venous thromboembolism cannot be overstressed. This field is highly dynamic, however, and new evidence is emerging periodically that may change the recommendations. The purpose of this ...
Mills Tracey A TA Division of Human Development, The University of Manchester, Manchester, UK. - - 2007
To determine whether delivery mode influences placental chorionic plate arterial and venous vascular reactivity. Normal term placentas were obtained after vaginal delivery or cesarean section. Chorionic plate arterial and venous function was assessed by wire myography. Sodium nitroprusside-induced arterial relaxation increased post cesarean section at 20% oxygen. Decreased U46619-induced venous ...
Bahadir Zeki Z Department of Kinesiology, Louisiana State University, Baton Rouge, LA, USA. - - 2007
Previous research indicates that venous emptying serves as a stimulus for vasodilation in the human forearm. This suggests the importance of recognizing the potential influence of venous volume on reactive hyperemic blood flow (RHBF) following occlusion. The purpose of this study was to examine the influence of venous emptying on ...
Albisetti Manuela - - 2007
AIMS: To evaluate the prevalence of congenital prothrombotic disorders in children with peripheral venous and arterial thromboses. METHODS: Deficiencies in antithrombin (AT), proteins C (PC) and S (PS), and increased lipoprotein (a), and the presence of factor V (FV) G1691A, prothrombin G20210A and methylenetetrahydrofolate reductase (MTHFR) mutations were investigated. RESULTS: ...
Ak Ahmet - - 2006
Arterial blood gas (ABG) analysis has an important role in the clinical assessment of patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). However, arterial puncture or insertion of an arterial catheter has many drawbacks. The aim of this study was to evaluate whether venous blood gas (VBG) values ...
Yap Lok H - - 2006
BACKGROUND: The anastomotic coupling device (ACD) is currently used for microsurgical venous anastomoses as an alternative to sutures and can reduce anastomotic time. METHODS: We reviewed the microsurgical procedures performed at the University of Texas M. D. Anderson Cancer Center over a 40-month period. Procedures were performed for elective reconstruction ...
Nishibe T - - 2006
AIM: The role of air plethysmography (APG) in the diagnosis of chronic venous insufficiency has not been well established. The purpose of this study was to elucidate the relationship between APG parameters and clinical severity in patients with chronic venous insufficiency. METHODS: Two hundred and ninety-four limbs in 154 patients ...
Kalimuthu Ramasamy - - 2006
Since the first successful replantation of a human thumb reported by Komatsu and Tamai in 1968, thousands of severed digits and body parts have been successfully salvaged. Restoration of anatomic form and function are the goals of replantation after traumatic tissue amputation. Regardless of anatomic location, methods include microsurgical replantation ...
Takami Toshihiro, Ohata Kenji, ...
The histological features of arterialized medullary vein (MV) in spinal dural arteriovenous fistulas (SDAVF) were studied in five consecutive patients who presented with progressive congestive myelopathy. Retrograde venous filling on preoperative angiography was recognized as being severe in 3 cases and moderate in 2 cases. Direct intradural interruption of the ...
Misević Tonci - - 2006
Duplex sonography was used to assess functional features of arteriovenous fistula (AVF) for hemodialysis (HD). Internal diameter (ID), resistance index (RI) and blood flow (BF) velocity in feeding artery and in vein ofAVF, and venous BF volume were analyzed with purpose to determine the normal values. Presumed normal BF velocities ...
Iabichella M L - - 2006
The microcirculatory evaluation in patients affected by arteriopathic or venous ulcers is usually carried out using laser Doppler flowmetry, transcutaneous oxygen (transcutaneous pressure of oxygen, TcPO(2)), and carbon dioxide (transcutaneous pressure of carbon dioxide, TcPCO(2)) measurements and capillaroscopy. These techniques provide significant pathophysiologic and prognostic information. TcPO(2) and TcPCO(2) diagnose ...
Franch Rafaella - - 2006
The existence of specific differentiation markers for arterial smooth muscle (SM) cells is still a matter of debate. A clone named MM1 was isolated from a library of monoclonal antibodies to adult porcine aorta, which in vivo binds to arterial but not venous SM cells, except for the pulmonary vein. ...
Le Guyader Alexandre - - 2006
Distal venous drainage during extracorporeal membrane oxygenation (ECMO) via femoral cannulation is described. It was performed to relieve distal venous congestion due to obstruction by the venous cannula. Venous drainage was performed with an 11 Fr introducer catheter connected as a T to the main venous line. Its effectiveness was ...
Kopp R - - 2006
Long term results of four different operative procedures for the treatment of popliteal artery aneurysms were investigated either performed by short venous or segmental alloplastic interpositions or long femoro-popliteal below the knee bypass using alloplastic grafts or autologous vein. 47 patients treated for 50 popliteal aneurysms (mean diameter +/- SD: ...
Schubert Heinrich M - - 2006
The interrupted suture technique is most commonly used for microsurgical venous anastomosis. Needle-stitch trauma and intraluminal suture, however, potentially cause vascular wall damage, thrombosis, intimal hyperplasia or even stenosis. Therefore, the present study aimed to show the feasibility and reliability of a modified cuff technique (bipolar anastomosis technique (BAT)) for ...
Chung C-P - - 2006
BACKGROUND: The mechanism of transient global amnesia (TGA) is not clear. Attempting to support the hypothesis that retrograde venous hypertension causing cerebral venous ischemia plays a role in the pathogenesis of TGA, the authors used cranial three-dimensional time-of-flight (TOF) MR angiography (MRA) to detect a possible intracranial retrograde venous flow ...
Caggiati A - - 2006
It is commonly believed that valves are absent in veins smaller than two millimetres in diameter. Consequently, current investigations on the pathophysiology of chronic venous disease (CVD) consider and evaluate only the valvular competence of large veins. The authors review literature from their own collections as well as from medical ...
van der Linden Joke - - 2006
BACKGROUND: The success of a newly created arteriovenous fistula (AVF) depends on sufficient maturation of the forearm vein used. This maturation fails in up to 50%. We hypothesize that impairment of forearm venous distensibility, ie, the ability of veins to adjust to increased pressure, is related to AVF failure. METHODS: ...
Aydin K - - 2006
OBJECTIVE: The aim of this experimental study was to create a new focal venous infarction model in rats. METHOD: 20-male Sprague-Dawley rats were used in this experiment. Unilateral frontal strip craniectomy was done in front of the coronal suture. Frontal veins were observed by using the operative microscope. In this ...
Takami Toshihiro - - 2006
The histological features of arterialized medullary vein (MV) in spinal dural arteriovenous fistulas (SDAVF) were studied in five consecutive patients who presented with progressive congestive myelopathy. Retrograde venous filling on preoperative angiography was recognized as being severe in 3 cases and moderate in 2 cases. Direct intradural interruption of the ...
Chittenden Thomas W - - 2006
Branching morphogenesis is a key process in the formation of vascular networks. To date, little is known regarding the molecular events regulating this process. We investigated the involvement of synectin in this process. In zebrafish embryos, synectin knockdown resulted in a hypoplastic dorsal aorta and hypobranched, stunted, and thin intersomitic ...
Yamaki T - - 2006
BACKGROUND: To investigate patterns of venous insufficiency and changes in calf muscle deoxygenated hemoglobin (HHb) levels after an acute deep vein thrombosis (DVT). METHODS: A total of 78 limbs with an acute DVT involving 156 anatomic segments were evaluated with duplex scanning and near-infrared spectroscopy (NIRS) at 1, 3, 6 ...
Kelly Anne-Maree - - 2006
OBJECTIVES: For patients with diabetic ketoacidosis (DKA), arterial blood gas (BG) sampling for measurement of pH and bicarbonate has been considered an essential part of initial evaluation and monitoring of progress. There is growing evidence that venous values can be clinically acceptable alternatives to arterial measurements. This article summarizes the ...
Takahashi S S Department of Radiology, Akita University School of Medicine; - - 2006
Digital subtraction angiography (DSA) and magnetic resonance imaging (MRI) findings in 20 patients with carotid-cavernous fistula (CCF; 3 direct CCFs and 17 indirect CCFs) were retrospectively reviewed to evaluate venous drainage patterns that may cause intracerebral haemorrhage or venous congestion of the brain parenchyma. We evaluated the relationship between cortical ...
Pearce J M S - - 2006
The valveless craniospinal venous system consists of veins and plexuses that communicate freely and whose flow is bidirectional. It comprises (1) the intracranial-cortical veins, dural sinuses, cavernous sinuses and ophthalmic veins, and (2) the vertebral venous plexuses, which freely anastomose with the intracranial venous system. The vertebral venous plexuses anastamose ...
Lucas César de Paula Cde - - 2006
BACKGROUND: The objective of this study was to correlate the presence of leptomeningeal venous drainage and dysplastic venous dilation with the risk of intracranial hemorrhage in DAVFs. METHODS: The subjects for this research were composed of 93 patients with DAVFs who were studied retrospectively with regard to therapeutic success and ...
Anderson Robert H - - 2006
In the past, our interpretations of cardiac development depended on analysis of serially sectioned embryos, supported by three-dimensional reconstructions. It was not possible, using these techniques, to trace the fate of the various embryonic building blocks. This has all changed with the advent of the new techniques in molecular biology. ...
Brown M D - - 2006
Inappropriate timing or duration of the atrioventricular (AV) interval with DDD pacing can lead to hemodynamic compromise. Intraoperative pulmonary venous Doppler interrogation by transesophageal echocardiography can be a valuable tool to assess subtle rhythm abnormalities that may go unnoticed by electrocardiogram and hemodynamic monitoring. We describe a dramatic example of ...
Tobinick Edward - - 2006
There is substantial anatomical and functional continuity between the veins, venous sinuses, and venous plexuses of the brain and the spine. The term "cerebrospinal venous system" (CSVS) is proposed to emphasize this continuity, which is further enhanced by the general lack of venous valves in this network. The first of ...
Cullen S S Service de Neuroradiologie, CHU de Bicêtre - Université Paris XI; Orsay, France - - - 2005
Adjacent to the arterial circle of Willis at the base of the brain, there is an anastomotic circle of veins linking the right and left halves of the cerebral deep venous system. This venous circle is formed by anterior and posterior transverse anastomotic channels (the anterior and posterior communicating veins), ...
Miyayama Shiro - - 2005
We retrospectively evaluated the usefulness of both arterial and venous access with the pull-through technique in endovascular treatment of totally occluded Brescia-Cimino fistulas. We treated 26 patients (17 men, 9 women; age range 43-82 years, mean age 66 years) with occluded Brescia-Cimino fistulas. First, the occluded segment was traversed from ...
< 1 2 3 4 5 6 7 8 9 10 11 >