Relevant bibliographies by topics / Chronic venous insufficiency

Academic literature on the topic 'Chronic venous insufficiency'

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Published: 4 June 2021
Last updated: 24 January 2023

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Journal articles on the topic "Chronic venous insufficiency"

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Panda, Dwijesh Kumar. "Chronic Venous Insufficiency Resemble Lymphedema Leg." Asian Pacific Journal of Health Sciences 6, no. 3 (September 2019): 52–55. http://dx.doi.org/10.21276/apjhs.2019.6.3.10.

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Kestler, Bri. "Chronic Venous Insufficiency." Physician Assistant Clinics 6, no. 2 (April 2021): 319–30. http://dx.doi.org/10.1016/j.cpha.2020.11.005.

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ÇINAR ÖZDEMİR, Özlem, Emre ALTINDAĞ, Fatma AVCI, and M. Fatih UYSAL. "Chronic Venous Insufficiency." Turkiye Klinikleri Journal of Health Sciences 1, no. 2 (2016): 125–38. http://dx.doi.org/10.5336/healthsci.2015-45121.

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Wilson, Paul. "Chronic venous insufficiency." Morecambe Bay Medical Journal 3, no. 3 (September 1, 1998): 85–89. http://dx.doi.org/10.48037/mbmj.v3i3.549.

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Stadnicki, Antoni, Martin Rusnák, and Anna Stadnicka. "CHRONIC VENOUS INSUFFICIENCY." Scientific Journal of Polonia University 32, no. 1 (April 3, 2019): 131–36. http://dx.doi.org/10.23856/3217.

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Chronic venous insufficiency (CVI) is a common, but underdiagnozed clinical disorder associated with a variety of signs and symptoms. The presence of leg edema in association with varicose veins, and venous leg ulcer in later disease stages defines the disease. The pathogenesis of chronic venous disease is based on venous reflux, obstruction, or a combination thereof. Prior postthrombotic syndrome is one of risk factor for CVI which may explain observed prevalence of thrombophilia in CVI. Color flow duplex ultrasound is the gold standard for nearly all diagnostic issues related to chronic venous disease. Compression stockings are the mainstay for conservative management. Earlier use of venous ablation therapy should be considered in symptomatic patients with superficial tortuous vein
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Miller, Wayne L. "Chronic venous insufficiency." Current Opinion in CARDIOLOGY 10, no. 5 (September 1995): 543. http://dx.doi.org/10.1097/00001573-199509000-00016.

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Kwun, Woo-Hyung. "Chronic Venous Insufficiency." Yeungnam University Journal of Medicine 24, no. 2 Suppl (December 31, 2007): S234–244. http://dx.doi.org/10.12701/yujm.2007.24.2s.s234.

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Reich-Schupke, S. "Chronic venous insufficiency." Phlebologie 46, no. 01 (January 2017): 34–36. http://dx.doi.org/10.12687/phleb2348-1-2017.

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Eberhardt, Robert T., and Joseph D. Raffetto. "Chronic Venous Insufficiency." Circulation 111, no. 18 (May 10, 2005): 2398–409. http://dx.doi.org/10.1161/01.cir.0000164199.72440.08.

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Eberhardt, Robert T., and Joseph D. Raffetto. "Chronic Venous Insufficiency." Circulation 130, no. 4 (July 22, 2014): 333–46. http://dx.doi.org/10.1161/circulationaha.113.006898.

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Dissertations / Theses on the topic "Chronic venous insufficiency"

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Metcalfe, Matthew James. "Purinergic signalling in chronic venous insufficiency and penile erection." Thesis, University College London (University of London), 2006. http://discovery.ucl.ac.uk/1444989/.

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Chronic venous insufficiency (CVI) describes diseases of the lower limb veins in which venous return is impaired and varicose veins and skin ulceration may develop. The roles of purinergic signalling in regulation of vascular tone in the long saphenous vein (LSV) and in the trophic changes occurring in LSV muscle cells and epidermal keratinocytes in lower leg skin were studied. The purinergic role in penile blood flow was also studied, where regulation of penile blood flow affects tumescence. Purinergic signalling was studied using immunohistochemistry, organ bath pharmacology and electron microscopy. P2Xj, P2Yi, P2Y2, P2Y4 and P2Y6 receptor immunoreactivity was present on LSV smooth muscle. Purine-mediated muscle contractions were weaker in varicose veins. Electron microscopy and immunohistochemistry findings support the view that smooth muscle cells change from the contractile to the synthetic phenotype in varicose veins, associated with an upregulation of P2Yi and P2Y2 receptors and a down regulation of P2Xi receptors. CVI skin showed a decrease in P2X7 receptor expression and an increase in P2Yj, P2Y2 and P2X5 receptor expression in different epidermal layers. Mean skin epidermal area in CVI was reduced. Immunohistochemistry and RT-PCR techniques were used to study the presence of P2Y6 receptors in corpus cavernosal tissue. Using organ bath pharmacology, P2Y6 receptors on cavernosal tissue mediated relaxation which was diminished by a P2Y6 antagonist. In conclusion it is suggested that the LSV muscle cell phenotype change may be a causal factor in the development of varicose veins. The thinner epidermis found in CVI might be the result of the changes in expression of P2Y and P2X receptors on keratinocytes. Increased keratinocyte P2X5 receptor activity may, in part, be accountable for epidermal thinning in CVI. Purinergic modulation of human cavernosal smooth muscle cells via the P2Y6 receptor subtype might play a physiological role in penile erection.
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Ting, Chi-wai Albert, and 丁志偉. "Surgical treatment for advanced chronic venous insufficiency in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B2955293X.

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Sultan, Muhammad. "Studies on the prevention of venous insufficiency and ulceration." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/studiesonthepreventionofvenousinsufficiencyandulceration(c61c012a-9f45-4339-8598-20ab40298d02).html.

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Introduction: Venous disease impairs the quality of life, necessitates time off work and causes venous ulcers. The focus of this thesis is to explore strategies to prevent chronic venous insufficiency (CVI) and venous ulceration. Aims 1. To identify a population at risk of developing venous ulcers 2. To study the pressure profile required by elastic stockings to halve transit venous time 3. To explore the role of compression following ankle fracture Methods: Data was collected from 231 patients with venous ulcers and age and sex matched 210 controls to identify risk factors for venous ulceration. Univariate and multivariate analysis of potential risk factors was undertaken to identify those that independently predict this risk. After identifying the population at risk, prophylactic strategies were developed. The effect of Engineered Compression Stockings (ECS) delivering 15mmHg, 25mmHg and 35mmHg pressure at the ankle on the calf venous transit time and volume was measured to determine the ideal pressure profile required to halve transit venous time, which should be appropriate for DVT prophylaxis. A dorsal foot vein was cannulated in 15 healthy volunteers with no venous disease. The transit time (secs) for ultrasound contrast from a foot vein to the popliteal vein was measured using duplex ultrasound. Calf volumes were recorded by water displacement. ECS delivering 25mmHg of pressure around the ankle were compared with no compression in a randomized controlled trial (RCT) in 90 patients within 72 hours of ankle fracture. Patients were randomised to either i) ECS and air-cast boot or ii) a liner and air-cast boot and were followed at 2, 4, 8, 12 weeks and 6 months. The primary outcome was functional recovery measured using the Olerud Molander Ankle Score (OMAS). Secondary outcomes were i) The American Orthopaedic Foot and Ankle Score (AOFAS), ii) SF12v2 Quality of Life score (QoL), iii) pain, and iv) frequency of DVT. Results The risk factors significantly associated with venous ulceration on multivariate analysis included a history of Deep Vein Thrombosis (DVT), phlebitis, hip replacement, poor mobility, weight/kg>100Kg, varicose veins (VV), family history of VV and weight (kg) between 75-100kg. A simple diagnostic scoring system was derived from this regression analysis with scores of . 3 predicting a 6.7% annual risk and of < 1 a 0.6% risk. Mean transit time without compression was 35, 32 and 33 secs while standing, sitting and lying. Transit time was consistently halved by ECS delivering 25mmHg to 14, 13 and 14 secs respectively (p<0.001). Mean leg volume whilst standing was reduced significantly from 3447ml with no ECS to 3259ml, 3161ml and 3067ml with ECS applying 15, 25 and 35mmHg respectively (p<0.001). ECS in ankle fracture patients reduced ankle swelling at all time points and significantly improved mean OMAS score at six months to 98 compared with 67 for the liner (p<0.001). AOFAS and SF12v2 scores were also significantly improved (p<0.001, p= 0.016). Of 86 patients with duplex imaging at four weeks, only five (12%) of the 43 ECS patients had a DVT compared with 10 (23%) of the 43 controls (p= 0.26). Conclusions: The risk score for venous ulcers will allow us to undertake RCTs on the prevention of leg ulceration. The pressure profile required to halve transit venous time is 25mmHg. The frequency of asymptomatic DVT following ankle fracture is sufficient to justify prophylaxis. Compression has a potential role in the management of ankle fractures by improving functional outcome and QoL. These studies facilitate research into the prevention of venous disease.
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MacKenzie, Rhoda K. "Chronic venous insufficiency and lower limb ulceration : aetiology, treatment and provision of care." Thesis, University of Aberdeen, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402697.

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Study 1:  Outcomes after superficial venous surgery 1a: Quality of life (QoL) after varicose vein (VV) surgery.  203 consecutive patients undergoing VV surgery completed the Aberdeen Varicose Vein Severity Score (AVSS) QoL questionnaire pre-operatively, 4 weeks, 6 months and 2 years post-operatively.  VV surgery leads to a significant improvement in AVSS, sustained at 2 years.  Patients having surgery for recurrent VV score worse at all time-points than patients with primary VV but still enjoy a significant improvement in QoL. 1b:  The effect of long saphenous vein (LSV) stripping on QoL.  66 of the 203 patients in study 1a had pre- and post-operative venous duplex.  Even in a specialised vascular unit where stripping is routinely attempted, only 25/66 (38%) had their LSV completely stripped to the level of the knee.  Complete (as opposed to incomplete) stripping to the knee was associated with an additional improvement in AVSS above that seen in study 1a.  In those with pre-operative deep venous reflux (DVR) complete stripping did not confer this additional advantage. 1c:  The effect of long saphenous vein stripping on deep venous reflux (DVR).  In 77 limbs of 62 patients from study 1b, complete stripping was associated with reversal of pre-operative superficial femoral and popliteal vein reflux.  Incomplete stripping was associated with the development of DVR in previously normal deep veins. Study 2:  Lower limb ulceration:  delivery of care and aetiology.  2a:  Delivery of care for lower limb ulceration.  128 patients were assessed at a one-stop leg ulcer clinic, 79% of whom had purely venous ulceration. 2b:  Aetiology of CVU:  thrombophilia.  41% of 88 patients with CVU had an identifiable thrombophilic abnormality.  Thrombophilia was 3-20 times more common than in the general population, but similar to rates reported in patients with a first episode of venous thrombosis.
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Eifell, Ronald K. G. "Continuous ambulatory venous pressure monitoring in the assessment of chronic venous insufficiency and the results of venous surgery in the lower limb." Thesis, University of Newcastle upon Tyne, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492114.

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Chronic venous insufficiency is the term used to describe lower limb venous disease causing symptoms in the leg, which include swelling, lipodermatosclerosis and ulceration. The underlying processes for the development of these symptoms are venous reflux, deep venous occlusion or both, which in turn result in venous hypertension. This thesis is focussed on the former process only, as deep venous occlusion is usually managed conservatively at the institutions in which this research took place.
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Evans, Christine J. "Prevalence of varicose veins and chronic venous insufficiency of the legs in the general population." Thesis, University of Edinburgh, 2002. http://hdl.handle.net/1842/23337.

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The specific objectives of this thesis were to determine the prevalence of varicose veins and CVI on clinical examination, and venous reflux on duplex scanning, in a random sample of the general population. The study design was a cross-sectional survey and the initial study population will be followed up as a cohort. The target population was men and women aged 18-64 years living in the city of Edinburgh. Subjects were randomly selected from the age-sex registers of 12 general practices which were distributed geographically and socio-economically throughout the city. Information collected on each subject included demographic data and past medical history from a questionnaire; height and weight measurement; classification of varicose veins and chronic venous insufficiency on clinical examination and measurement of duration and venous reflux on duplex scanning of eight vein segments in each leg. The Edinburgh Vein Study confirms that venous disease is a common condition which increases with age. Contrary to many previous studies, the results suggest that varicose veins and CVI are at least as common in men as women. A positive association was seen between the prevalence of venous reflux in individual vein segments and the presence and severity of venous disease, although reflux was also present in many with no clinical signs of disease. Follow-up of this cohort will provide information on the incidence, natural history and development of venous disease in both sexes. It will also help to clarify the extent to which venous reflux is a predictor of future occurrence of venous disease and of complications in those who already have disease. Further long term studies are required to determine the extent to which treatment prevents progression of venous disease. Such information on the natural history and outcomes of treatment is required to allow clinicians and policy makers to make decisions as to who will benefit most from medical intervention for venous disease.
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Stuart, Wesley P. "The role of medial calf perforating veins in the development of chronic venous insufficiency and ulceration." Thesis, University of Edinburgh, 2002. http://hdl.handle.net/1842/23215.

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The procedure of open perforator ligation was popularised by Linton and Cockett but became less favoured as it was associated with frequent wound complications, prolonged stay in hospital and mixed results in reported series. Two technological advances have resulted in the impetus to reappraise the indications for surgical interruption of calf perforating veins. Duplex ultrasound is a non-invasive investigation that has allowed anatomical and functional information on blood vessels and flow to be gathered safely and painlessly. Secondly, minimal invasive surgical instrument technology allows interruption of the medial calf perforating veins with expectation of reduced complication rates. The aim of the present work therefore, is to define the role of calf perforating veins in the development of the complications of chronic venous insufficiency. Deteriorating clinical status of the limb was associated with increasing number and maximum diameter of medial calf perforating veins. The number and proportion of these vessels demonstrating bidirectional flow (incompetence) also increased with deteriorating clinical findings. Incompetent calf perforating veins were found to be associated with main stem venous reflux in the superficial and deep systems, but were rarely found as the sole venous abnormality. Surgical correction of the main stem venous reflux resulted in the correction of the physiology in the majority of incompetent perforating veins (IPV). The minimally invasive approach to the interruption of IPV showed several advantages over the open approach in terms of documented complications and post-operative stay in hospital. The present work demonstrates associative evidence of a link between the presence of IPV and the development of the complications of chronic venous insufficiency, evidence that saphenous surgery alone will correct IPV physiology without direct intervention to perforators, if the deep system is normal, and also evidence that minimally invasive perforator surgery is associated with few complications over and above those expected for routine varicose vein surgery.
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Moseley, Amanda Louise, and mosedeal@yahoo com au. "The Efficacy of Home Based Exercise Regimes for Limb Oedemas." Flinders University. Medicine, 2007. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20070314.163051.

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Secondary lymphoedema and venous oedema of the limb are the consequence of an imbalance between tissue fluid infiltrate and drainage, which leads to interstitial fluid accumulation, tissue changes, limb discomfort and morbidity. Numerous conservative therapies have been developed to address some of these negative outcomes, with a proportion of these being labour and cost intensive. This makes the investigation of cost effective and easy to implement home based regimes very important. One such therapy is limb exercise, which can be beneficial for limb oedemas through changes in both interstitial pressure and calf muscle activation. Therefore, this thesis explored the benefits of different exercise regimes for limb oedema of both lymphatic and vascular origin. This was achieved through a systematic review of existing conservative therapies for limb oedemas and four clinical trials investigating the benefits of home based exercise regimes. Results demonstrated that various positive and significant outcomes could be gained from the implementation of such regimes, including improvements in both subjective and objective parameters. These results reveal how these chronic and disabling conditions can be maintained by the patient in the home environment in between health care visits. It also demonstrates how self maintenance may alleviate the burden on the health care system.
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Robertson, Lindsay Anne. "Incidence of varicose veins, chronic venous insufficiency and venous reflux in the general population and associated risk factors : the Edinburgh Vein Study follow up." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/8149.

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Chronic venous disease (CVD) is a common problem in the western world, causes considerable morbidity and has a substantial impact on the health care system in terms of cost of treatment. Most epidemiological research has focussed on the prevalence of varicose veins and ulceration. As such, evidence on the incidence and risk factors is limited. The aim of this study was to measure the incidence of C2 varicose veins, C3-C6 chronic venous insufficiency (CVI) and venous reflux ≥ 0.5 seconds duration in an adult population, and to investigate risk factors associated with the development of these conditions. The Edinburgh Vein Study was a prospective cohort study in which 1,566 men and women aged 18-64 years randomly sampled from the general population underwent an examination comprising clinical and photographic classification of CVD, duplex scanning of the deep and superficial systems of both legs, and completed a questionnaire on lifestyle and medical history. After a 13 year period, invitations were sent to the 1456 survivors to attend a follow up examination. In total, 880 participated in the follow up study, giving a response rate of 60.4%. The overall incidence of C2 varicose veins was 18.2% (95% CI 15.2-21.6), equivalent to an annual incidence rate of 1.4% (95% CI 1.1-1.7). There were no gender differences (p=0.78). Age was associated with the development of new C2 varicose veins the 13 year incidence rose from 9.8% in those aged 18-34 years to 25.7% in those aged 55-64 years (p<0.001). New cases of C3-C6 CVI developed in 9.2% (95% CI 7.0-11.9) of the study sample over 13 years, an annual incidence rate of 0.7% (95% CI 0.5-0.9). There were no gender differences: the 13 year incidence was 10.7% (95% CI 7.2-15.5) and 8.1% (95% CI 5.7-11.6) in men and women respectively (p=0.32). The incidence increased consistently with age, from 2.1% in those aged under 35 years to 17.1% in those aged over 55 years (p<0.001). Of all C3-C6 conditions, C3 corona phlebectatica had the highest incidence (5.3%, 95% CI 3.7-7.5). C5-C6 venous ulceration had the lowest incidence, affecting only 0.5% (95% CI 0.2-1.6) of the study sample over the 13 years. Overall, 12.7% of participants developed new venous reflux ≥0.5 seconds duration from baseline to follow up. The 13 year incidence of superficial, deep and combined venous reflux was 8.8%, 2.6% and 1.3% respectively. Neither age nor sex were associated with the incidence of venous reflux (p>0.05). The highest incidence of reflux was in the great saphenous vein in the lower third of the thigh (4.2%, 95% CI 2.4-7.1). Venous reflux at baseline was associated with the development of new C2 varicose veins at follow up: the incidence creased linearly in those with no reflux, deep, superficial and combined reflux respectively (p<0.001). Family history of venous disease was a significant risk factor for C2 varicose veins (age and sex-adjusted OR 1.7, 95% CI 1.1-2.7) while obesity was associated with the development of CVI (age and sex adjusted OR 4.5 (95% CI 3.3-6.9). Pregnancy appeared to be associated with the development of varicose veins but the association was not statistically significant due to small numbers. No risk factor was associated with the development of venous reflux. The Edinburgh Vein Study is one of a few cohort studies to report the incidence of C2 varicose veins, C3-C6 CVI and venous reflux ≥0.5 seconds duration, and investigate risk factors associated with these conditions. While the results on incidence are consistent with the limited evidence from other studies, the exact effect of risk factors remains unknown. Genetic studies would help clarify whether CVD is an inherited or acquired condition. For other risk factors, results of this study could be combined with other population-based studies in a meta-analysis. The overall estimate of effect would identify the most important risk factors associated with the development of CVD and venous reflux. Finally the natural history and progression of CVD needs to be assessed. The Edinburgh Vein Follow Up Study has examined this relationship and results will help to identify those most likely to progress to more severe disease and, in turn, those who will benefit most from treatment. Appropriate, clinically proven, effective and cost-effective treatments can then be administered in an attempt to reduce the burden of CVD.
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Tanner, Daniel Edward. "Design, analysis, testing, and evaluation of a prosthetic venous valve." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/51758.

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Chronic Venous Insufficiency (CVI) is characterized by chronic venous hypertension from blood pooling in the lower limbs. The resulting symptoms include leg pain, varicose veins, fatigue, venous edema, skin pigmentation, inflammation, induration, and ulceration. Reflux from incompetent venous valves is a factor in up to 94% of individuals with CVI. Current treatments of CVI include compression stockings, drug therapy, vein disabling, venous stenting, and surgical correction with varying rates of success. However, a minimally invasive correction of deep venous reflux does not currently exist. A transcatheter prosthetic venous valve has the potential to be an effective, minimally invasive treatment for deep venous reflux which could treat up to 1.4 million individuals in the United States suffering from venous ulceration and make more than 1.7 billion dollars each year. Previously developed prosthetic venous valves have had problems with competency, patency, thrombogenicity, biocompatibility, and incorrect sizing. To meet the clinical need a prosthetic valve needs to be developed which succeeds where previous valves have failed. This thesis describes the design, analysis, pre-clinical testing, and evaluation of a novel prosthetic venous valve. Design specifications for an effective prosthetic venous valve were created. Verification tests were developed and performed which demonstrated that the valve met every design specification. Finite element and computational fluid dynamics simulations were performed to analyze the valve and calculated a maximum shear rate of 2300 s-1 in the valve during the high forward flow after a Valsalva maneuver. The valve is made of a biocompatible material that has low thrombogenicity, Poly(vinyl-alcohol) cryogel. On the average, the valve allows less than 0.5 mL/min of reflux at low and high retrograde pressures even after 500,000 cycles, indicating that it will reduce the reflux of individuals with venous reflux by more than 99.4%. The valve closes in less than 0.07 seconds and allows the distal pressure to rise to an average of 7% of the equilibrium pressure 30 seconds after a simulated ankle flexion. The valve increases the outflow resistance an average of 2.3 mmHg*min/L which is much less than obstruction levels,≥ 5 mmHg*min/L. The valve can fit in a 16 French catheter and is capable of percutaneous delivery. The base of the valve is 1.5 times the diameter of the vein in which it is to be implanted to help correct orientation upon deployment. Fluid behind the valve’s leaflets is ejected with a forward flow rate of 400 mL/min, suggesting that thrombus formation will not occur at this location. A stented valve remained patent in a porcine blood flow loop for 3 hours. The valve remains competent without buckling in a constricted vein at rest. The valve can expand to fit a vein with a maximum diameter 1.4 times the valve's initial diameter with low risk of tearing or leaflet prolapse. An IACUC protocol for a 12 week study to test the valve in sheep was prepared and approved. A study to evaluate the valve in humans is proposed with endpoints that can be tested for statistical significance and compared with other treatments for CVI. A set of valves which will correct reflux in the majority of common femoral, femoral, and popliteal deep veins is proposed and a sizing guide for surgeons is provided. The minimum distance between prosthetic valves placed in the same vein segment is 13 cm. A comparison of this valve with previously developed prosthetic venous valves and recommendations for work to be performed in the future are given. The valve proposed in this work is the only valve to meet all design specification for an effective prosthetic venous valve, and therefore shows great potential to be a minimally invasive treatment for deep venous reflux.
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Books on the topic "Chronic venous insufficiency"

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Ballard, Jeffrey L., and John J. Bergan, eds. Chronic Venous Insufficiency. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0473-5.

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Lumsden, Alan B., and Davies Mark G. Chronic venous insufficiency. Minneapolis, Minnesota: Cardiotext, 2011.

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Health benefits derived from sweet orange: Diosmin supplements from citrus provide soothing relief for chronic venous insufficiency, varicose veins, hemorrhoids, leg ulcers, ankle swelling, complications of diabetes, and other conditions of the lower extremities. Laguna Beach, CA: Basic Health Publications, 2007.

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Messmer, K., ed. Microcirculation in Chronic Venous Insufficiency. S. Karger AG, 1999. http://dx.doi.org/10.1159/isbn.978-3-318-00392-5.

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Davies, Mark G., and Alan B. Lumsden. Chronic Venous Insufficiency: Contemporary Endovascular Management. Cardiotext Publishing, 2011.

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Bergan, John, and Jeffrey L. Ballard. Chronic Venous Insufficiency: Diagnosis and Treatment. Springer, 2013.

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Chronic Venous Insufficiency: Diagnosis and Treatment. Springer, 2011.

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(Editor), Jeffrey L. Ballard, and John J. Bergan (Editor), eds. Chronic Venous Insufficiency: Diagnosis and Treatment. Springer, 2000.

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Bergan, John, and Jeffrey L. Ballard. Chronic Venous Insufficiency: Diagnosis and Treatment. Springer London, Limited, 2012.

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Group, Medicine, ed. Chronic venous insufficiency: Its diagnosis and management. Abingdon: Medicine Group, 1989.

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Book chapters on the topic "Chronic venous insufficiency"

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Lawrence, Peter F., and Christine E. Gazak. "Epidemiology of Chronic Venous Insufficiency." In Chronic Venous Insufficiency, 3–8. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0473-5_1.

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Guex, J. Jérôme. "Macrosclerotherapy for Patients with Severe Chronic Venous Insufficiency." In Chronic Venous Insufficiency, 97–101. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0473-5_10.

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Rhodes, Jeffrey M., and Peter Gloviczki. "Surgery of Perforating Veins." In Chronic Venous Insufficiency, 103–16. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0473-5_11.

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Bergan, John J., Jeffrey L. Ballard, Jay Murray, and Steven Sparks. "Single-Port Open-Scope Perforator Vein Surgery." In Chronic Venous Insufficiency, 117–24. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0473-5_12.

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Dunn, Raymond M., Michael J. Rohrer, and Adam J. Vernadakis. "Management of Venous Ulceration: Excision, Skin Grafting and Microsurgical Flaps." In Chronic Venous Insufficiency, 125–38. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0473-5_13.

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Kistner, Robert L., Bo Eklof, Danian Yang, and Elna M. Masuda. "Venous Reconstruction: Evidence-based Analysis of Results." In Chronic Venous Insufficiency, 139–50. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0473-5_14.

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Pineo, Graham F., and Russell D. Hull. "Disorders Predisposing to Venous Thromboembolism." In Chronic Venous Insufficiency, 155–63. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0473-5_15.

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Dake, Michael D., and Suresh Vedantham. "Thrombolysis, Angioplasty, and Stenting." In Chronic Venous Insufficiency, 165–77. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0473-5_16.

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Thorpe, Patricia E. "Endovascular Therapy for Chronic Venous Obstruction." In Chronic Venous Insufficiency, 179–93. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0473-5_17.

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Ballard, Jeffrey L., and John J. Bergan. "Risk Factors in Chronic Venous Insufficiency." In Chronic Venous Insufficiency, 9–15. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0473-5_2.

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Conference papers on the topic "Chronic venous insufficiency"

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Calamanti, Chiara, Annalisa Cenci, Michele Bernardini, Emanuele Frontoni, and Primo Zingaretti. "A Clinical Decision Support System for Chronic Venous Insufficiency." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68016.

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Earlier diagnosis plays a pivotal role in clinical applications, since it can strongly reduce the incidence and impact of many diseases and, consequently, the reduction of health care costs. This last aspect depends strongly from right therapy prescriptions, especially when there are various opportunities. Within this context, Clinical Decision Support Systems (CDSS) could bring several benefits. In this paper, we propose a CDSS with the aim of improving the clinician practice based on recommendations, assessment of the patient and screening of patients with risk factors to prevent chronic venous insufficiency (CVI) complications. The proposed CDSS is implemented in the Nu.Sa. cloud system, which involves thousands of italian General Practitioners (GPs) collecting data (EHR data, personal data, patient’s medical history) from millions of patients. The proposed architecture is designed to collect data from a distributed scenario where GPs are collecting clinical history and pharmacy or second level hospitals gather data from medical devices connected to the cloud over a standard data architecture. We show that exploiting the integration of the medical device VenoScreen Plus with the patient EHR, this CDSS is capable to improve preventive care, to enhance clinical performance, to influence clinical decision making and to significantly improve the decision quality levering on data driven approach.
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Makovec, Matej, Uros Aljancic, and Danilo Vrtacnik. "Evaluation of chronic venous insufficiency with PPG prototype instrument." In 2017 40th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO). IEEE, 2017. http://dx.doi.org/10.23919/mipro.2017.7973445.

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Tortoli, P., S. Ricci, F. Andreuccetti, and L. Forzoni. "Detection of chronic cerebrospinal venous insufficiency through multigate Quality Doppler Profiles." In 2010 IEEE Ultrasonics Symposium (IUS). IEEE, 2010. http://dx.doi.org/10.1109/ultsym.2010.5935623.

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Jones, Casey M., Kasim L. Mirza, Bradley J. Blakley, Dusan Pavcnik, and Monica T. Hinds. "A Treatment for Chronic Deep Venous Insufficiency Utilizing Induced Pluripotent Stem Cell Derived Endothelial Cells." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14628.

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Chronic deep venous insufficiency (CDVI) is a disease caused by incompetent venous valves in the deep veins which result in venous reflux and pooling of blood in the lower extremities. Symptoms include edema, skin changes, and ulceration. It is estimated that over six million people in the United States are affected by this disease and symptoms can be recurring, leading to an underestimation of the prevalence. The current treatments of CDVI are management techniques to encourage blood flow and oxygen transport, including compression, elevation, and exercise; strategies to repair or replace the incompetent valves are lacking.
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Alreshidi, Meshael, Mohammed Alshammari, A. Eid S., Mohammad Altraifi, Aljoharah Alwajaan, Nouf Alghris, Elaf Altebainawi, Afnan Alshammari, Saleh Alammari, and Ibrahim Alrashidi. "Awareness of Interventional Radiology Treatment Options for Chronic Venous Insufficiency in Saudi Arabia." In Presentation Abstracts. Thieme Medical and Scientific Publishers Pvt. Ltd., 2021. http://dx.doi.org/10.1055/s-0041-1740910.

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Farrell, Laura-Lee, Deepak Nair, Ross Milner, and David Ku. "Thrombotic Potential of a Prosthetic Vein Valve." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-175925.

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Over seven million Americans suffer from chronic venous insufficiency, secondary to valvular dysfunction, with few effective clinical therapies. Chronic Venous Insufficiency (CVI) is a painful and debilitating disease that affects the superficial and deep veins of the legs. After deep venous thrombosis, the vein valves leaflets become adherent, fold over, or are absorbed into the vein wall. Incompetent valves allow reflux and subsequent pooling of blood in the legs. The resultant CVI causes severe leg edema, skin breakdown, and possible gangrene. Current clinical therapies are only modestly effective and include vein stripping and ligation, valvuloplasty, vein valve transposition, and vein valve transplantation. Valvuloplasty is the most definitive of CVI treatment, though this surgical treatment is rarely performed due to its difficulty. The quest for a better solution continues.
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Zahavi, J., S. Zaltzman, E. Firsteter, and E. Avrahami. "SEMI-QUANTITATIVE RADIONUCLIDE PHLEBOGRAPHIC (RNP) ASSESSMENT OF DEEP VEIN THROMBOSIS (DVT) AND CHRONIC VENOUS INSUFFICIENCY (CVI)." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1642895.

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A semi-quantitative RNP using 99Technetium macroaggregated albumin for the evaluation and follow-up of DVT and CVI has been developed. Values were assigned to the deep veins of the calf, knee, tigh and pelvis based upon the localization and the characteristics of the images obtained: stasis, hot spots and collateral circulation. A maximum score of 18 reflected complete thrombosis of all 4 segments. 208 patients (mean age 53.7 years, range 18-92), 161 of whom had a proven risk factor for DVT were studied. 99Technetium was injected into the dorsal foot vein of 407 limbs with appropriate tourniquets and early and late imaging of the limbs, pelvis and lungs was performed. In 48 patients, 83 limbs, X-ray contrast phlebography (CP) was also done. The mean RNP score was 4.1 units (range 0.4-18) and higher in the left than the right lower limb. It was mostly high in patients with proximal recurrent DVT or in DVT superimposed on CVI. The score was easy to follow and helpful in the assessment of the extent of DVT. It was particularly helpful in 3 instances. 1) Assessment of venous patency following anticoagulant therapy. 2) Estimation of recurrent DVT. 3) Differentiation of recent DVT from venous insufficiency. Overall RNP method had a sensitivity of 87.6%, a specificity of 54% and an accuracy of 64.8%. The sensitivity was similar in above & below-knee thrombi. Yet the specificity was higher in above-knee thrombi. The highest accuracy (87.3%) was observed in pelvic and groin thrombi. The distribution of thrombi on CP was 19% below the knee, 31% above it and 50% both above and below the knee. Pulmonary embolism (PE) was initially observed in 54 patients (26%) with no clinical evidence of DVT and therefore untreated. This high level is most probably related to the high incidence of proximal DVT in the patients. 181 patients were treated with heparin & coumadin and the RNP score was decreased to 3.6 units (range 0.4-8.8). PE occurred during treatment in 11 (6.1%) and recurrent DVT in 16 (8.8%) patients. CVI was observed in 23 patients before treatment and in another 24 patients (13.2%) after treatment. These results indicate that the RNP method is a simple, semi-quantitative and useful technique for the evaluation and follow-up of DVT and CVI. It is most helpful in the assessment of the extent of DVT. It is also a rapid, noninvasive and cost effective techniaue.
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Ismail, Mohamed, and Amr Mahmoud. "Ballooning of Inferior Vena Cava and Iliac Veins Is It Enough for Treating of Chronic Venous Insufficiency." In PAIRS Annual Meeting. Thieme Medical and Scientific Publishers Pvt. Ltd., 2018. http://dx.doi.org/10.1055/s-0041-1730729.

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Pittaluga, P., and S. Chastanet. "Influence on Chronic Venous Insufficiency of Primary Absence of the Great Saphenous Vein in the Saphenous Compartment at the Thigh." In V International Phlebology Symposium. Editora Edgard Blücher, 2014. http://dx.doi.org/10.5151/medpro-flebo-sif_35.

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Packer, Ryan, Brian D. Jensen, and Anton E. Bowden. "Design and Modeling of a Prosthetic Venous Valve." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-86164.

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Chronic Venous Insufficiency (CVI) is a disease of the lower limbs that affects millions of people in the United States. CVI results from incompetent venous valves. The purpose of venous valves is to prevent retrograde blood flow to the lower limbs. Valve failure can lead to edema, pain, and ulcers. One solution that has great potential is to create an implantable venous valve that could restore function of the venous system. No prosthetic venous valves are clinically used currently because of problems with biocompatiblility and thrombogenicity caused by high shear rates. This paper presents a prosthetic venous valve that could overcome these difficulties by using carbon-infiltrated carbon nanotubes (CI-CNTs). This material has been proven to be thrombo-resistant, biocompatible due to its non-reactive properties, and durable. The valve was designed to be initially open and to close with physiological pressures. Finite element modeling showed that, with a hydrostatic pressure of 20 mmHg (the minimum hydrostatic pressure in the common femoral vein), it fully closed with a maximum stress of 117 MPa, which is below the ultimate strength of CI-CNTs. A computational fluid dynamics analysis demonstrated the valve would cause a maximum shear rate of 225.1 s−1, which is less than the maximum shear rate in the body. Hence, this valve would be less likely than previous prosthetic valves to develop blood clots. Currently, this is the lowest shear rate reported for a prosthetic venous valve. These results demonstrate that a CI-CNT prosthetic venous valve has the potential to be an effective treatment for CVI.
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