46 results match your criteria cvi standing


Association between vein diameters, reflux characteristics, and clinical severity in patients with chronic venous insufficiency in Northwest China.

J Vasc Surg Venous Lymphat Disord 2021 03 28;9(2):401-408.e1. Epub 2020 Jul 28.

University of California, Davis, Vascular Center, Sacramento, Calif. Electronic address:

Objective: Our goal was to summarize the relationship between vein diameters, reflux characteristics, and clinical severity in consecutive patients with chronic venous insufficiency (CVI) in Northwest China.

Methods: We evaluated 531 consecutive patients with CVI (249 women) who presented to the Department of Ultrasound of Xijing Hospital from September 2017 to July 2019. Reflux times and the mean diameters of the great saphenous, the small saphenous, and the calf perforator veins based on duplex ultrasound scans obtained in the standing position were recorded. Read More

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High prevalence of chronic venous disease among health care workers in the United States.

J Vasc Surg Venous Lymphat Disord 2020 03;8(2):224-230

Division of Vascular Surgery, Department of Surgery, University of Maryland, Baltimore, Md; Vascular Service, Veterans Affairs Medical Center, Baltimore, Md; Baltimore VA Geriatric Research, Education, and Clinical Center, Veterans Affairs Medical Center, Baltimore, Md. Electronic address:

Background: Health care workers spend extended times standing and walking short distances and are at risk for development of chronic venous insufficiency (CVI). We conducted a hospital-wide venous screening program designed to measure the prevalence of and risk factors for clinical manifestations of CVI and ultrasound evidence of venous reflux or obstruction in health care workers. We also determined their risk for deep venous thrombosis (DVT). Read More

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A Common Live-Attenuated Avian Herpesvirus Vaccine Expresses a Very Potent Oncogene.

mSphere 2019 10 9;4(5). Epub 2019 Oct 9.

Institut für Virologie, Freie Universität Berlin, Berlin, Germany

Vaccines play a crucial role in the protection of animals and humans from deadly pathogens. The first vaccine that also protected against cancer was developed against the highly oncogenic herpesvirus Marek's disease virus (MDV). MDV infects chickens and causes severe immunosuppression, neurological signs, and fatal lymphomas, a process that requires the viral oncogene, The most frequently used Marek's disease vaccine is the live-attenuated CVI988/Rispens (CVI) strain, which efficiently protects chickens and prevents tumorigenesis. Read More

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October 2019

Cardiovascular Disease: Chronic Venous Insufficiency and Varicose Veins.

FP Essent 2019 Apr;479:16-20

Womack Army Medical Center Department of the Army, WAMC Stop A 2817 Reilly Rd, Ft Bragg, NC 28310-7301.

Chronic venous insufficiency (CVI) results from long-term venous hypertension in the legs caused by venous obstruction, venous valve incompetency, muscle pump dysfunction, or a combination of these. CVI occurs in 9.4% of men and 6. Read More

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Validation of a Gravitational Model to Study Local Endogenous Biomarkers in Chronic Venous Insufficiency.

Eur J Vasc Endovasc Surg 2018 Dec 1;56(6):865-873. Epub 2018 Sep 1.

Josef Pflug Vascular Laboratory, Ealing Hospital, Ealing, UK; Department of Surgery and Cancer, Imperial College, London, UK; West London Vascular and Interventional Centre, London North West University Healthcare NHS Trust, Harrow, UK; Thrombosis & Hemostasis Research Laboratories, Loyola University Chicago, Maywood, IL, USA.

Objective/background: Unlike most systemic chronic diseases, chronic venous insufficiency (CVI) is ideal to study using endogenous biomarkers. The stimulus causing damage can be turned on and off with gravitational positioning and venous blood samples can be taken locally. Annexin V (apoptosis) and microparticles (cell membrane debris) were used as markers of cell destruction, with matrix metalloproteinases (MMPs) as markers of tissue remodelling. Read More

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December 2018

[Factors of compliance with the wearing of elastic compression stockings in a Sub-Saharan population].

J Med Vasc 2017 Jul 8;42(4):221-228. Epub 2017 Jun 8.

Institut de cardiologie d'Abidjan, BPV 206, Abidjan, Côte d'Ivoire. Electronic address:

Introduction: Elastic venous compression is the basic treatment of chronic venous insufficiency (CVI) and deep vein thrombosis (DVT). Very little data exist in sub-Saharan Africa concerning the wearing of compression stockings.

Aim: To determine the factors of compliance with wearing elastic compression stockings. Read More

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Visual impairment certification due to diabetic retinopathy in North and Eastern Devon.

Acta Ophthalmol 2017 Dec 1;95(8):e756-e762. Epub 2017 Apr 1.

West of England Eye Unit, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK.

Purpose: To determine certifications of visual impairment (CVIs) due to diabetic retinopathy (DR) in a region that has operated diabetic screening since 1992.

Methods: A retrospective review of all CVIs due to DR was conducted, with mid-year population estimates and a diabetes prevalence model used to determine the annual incidence of certification from 2010 to 2013. For 2013, CVIs due to DR were also compared to all CVIs in the region. Read More

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December 2017

Patient specific instrumentation versus conventional knee arthroplasty: comparative study.

Int Orthop 2017 07 19;41(7):1361-1367. Epub 2016 Dec 19.

Victor Babes University of Medicine and Pharmacy, Timisoara, Romania.

Background: The key to a successful knee replacement is restoring normal kinematics with a neutral alignment, thus a hip-knee-ankle (HKA) angle of 180° (within 3° limits). Conventional TKR is proven to have excellent results but relies in extensive visual referencing of bony landmarks. Customised cutting blocks provide accurate bone cuts, also lowering the risk of fat embolism, blood loss and operating time. Read More

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Risk Factors in Patients with Venous Stasis-Related Skin Lesions without Major Abnormalities on Duplex Ultrasonography.

Ann Vasc Dis 2016 29;9(3):201-204. Epub 2016 Aug 29.

Division of Vascular Surgery, Department of Surgery and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan.

To clarify the risk factors for venous stasis-related skin lesions in the legs in patients without major abnormalities on duplex ultrasonography (DUS). Fifty patients (nine males and 41 females, age 27-93 years) with symptoms of C4 or greater according to the Clinical, Etiological, Anatomical, Pathological (CEAP) classification, but having no abnormalities on DUS were reviewed for known risk factors for chronic venous insufficiency (CVI) such as older age (>70 years), obesity (body mass index [BMI] >30 kg/m), short walking distance (<200 m/day), reduced ankle range of motion (<20°), and occupation requiring prolonged standing (>8h per day). The risk factor was different between male and female patients; although all patients had at least one of the above risk factors, the most commonly found risk factor in male patients was occupation requiring prolonged standing (63%), while advanced age (78%) and limited walking distance (83%) were risk factors in female patients. Read More

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Frequency of Peripheral Arterial Disease in Patients With Chronic Venous Insufficiency.

Iran Red Crescent Med J 2016 Jan 2;18(1):e20781. Epub 2016 Jan 2.

Dermatovenereological Clinic, Clinical Center of Vojvodina, Novi Sad, Serbia; Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia.

Background: It is estimated that about 15% (10% - 30% in most of the studies) of the total adult population has some aspects of the Chronic Venous Insufficiency (CVI). Frequency of the Peripheral Arterial Disease (PAD) in the adult population is 3% - 4%. Studies dealing with etiopathogenesis of leg ulcers show that between 10% and 18% of all ulcers are of mixed, arterial-venous origin. Read More

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January 2016

Association of Venous Disorders with Leg Symptoms: Results from the Bonn Vein Study 1.

Eur J Vasc Endovasc Surg 2015 Sep 30;50(3):360-7. Epub 2015 Jun 30.

Department of Dermatology, University of Bonn, Germany. Electronic address:

Objectives: The aim was to study the association between venous disorders and leg symptoms in the population based cross sectional Bonn Vein Study 1 (BVS1).

Methods: A total of 1,350 men and 1,722 women aged 18-79 years were enrolled into BVS1. Chronic venous insufficiency (CVI), varicose veins (VVs), and clinical classes (C-classes/CEAP [Clinical, Etiological, Anatomical, and Pathophysiological]) were determined by clinical and duplex investigation. Read More

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September 2015

Non-pharmacological interventions for preventing venous insufficiency in a standing worker population.

Cochrane Database Syst Rev 2013 Oct 15(10):CD006345. Epub 2013 Oct 15.

Department of Vascular Surgery, The Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, High Heaton, Newcastle upon Tyne, UK, NE7 7DN.

Background: Chronic venous insufficiency (CVI) is a common problem, affecting up to 50% of the population in industrialised countries. It is a chronic condition which, if untreated, can progress to serious complications that in turn can interfere with working ability. Standing at work is a known risk factor for CVI, yet the true effect of non-pharmacological preventive strategies remains unknown. Read More

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October 2013

Abdominal hypertension and venous insufficiency of lower limbs: is there a relationship?

Ann Ital Chir 2013 Jan-Feb;84(1):67-72

Objective: The purpose of our study is to understand the compression, by subcutaneous fat in obese patients, who present a chronic increase in abdominal pressure, and on the sapheno-femoral cross. Such increase would result in a chronic venous insufficiency (CVI) of lower limbs and, if possible, it will be quantified also according to the posture.

Material And Methods: We studied two different groups of patients with CVI: obese and non-obese. Read More

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November 2015

Non-pharmacological interventions for preventing venous insufficiency in a standing worker population.

Cochrane Database Syst Rev 2012 Jan 18;1:CD006345. Epub 2012 Jan 18.

PublicHealth Sciences,TheMedical School,TheUniversity of Edinburgh,

Background: Chronic venous insufficiency (CVI) is a common problem, affecting up to 50% of the population in industrialised countries. It is a chronic condition which, if untreated, can progress to serious complications that in turn can interfere with working ability. Standing at work is a known risk factor for CVI, yet the true effect of non-pharmacological preventive strategies remains unknown. Read More

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January 2012

Evaluation of prosthetic venous valves, fabricated by electrospinning, for percutaneous treatment of chronic venous insufficiency.

J Artif Organs 2011 Dec 26;14(4):294-300. Epub 2011 Jul 26.

Department of Biomedical Engineering, Osaka Institute of Technology, 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan.

Chronic venous insufficiency (CVI) remains a major health problem worldwide. Direct venous valve surgical repair and venous segment transplantation are clinical options; however, they are highly invasive procedures. The objectives of this study were to fabricate prosthetic venous valves (PVVs) by electrospinning, for percutaneous treatment of CVI, and evaluate their hydrodynamic characteristics in vitro at the same locations and under the same flow conditions. Read More

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December 2011

How does the presence and duration of central visual impairment affect reaching and grasping movements?

Ophthalmic Physiol Opt 2011 May 17;31(3):233-9. Epub 2011 Mar 17.

Vision and Eye Research Unit (VERU), Postgraduate Medical Institute, Anglia Ruskin University, Cambridge, UK.

Purpose: To examine how subjects with central visual impairment (CVI) due to macular degeneration conduct reaching and grasping movements compared to those with normal vision and to determine whether these are influenced by the duration of the impairment.

Methods: Eighteen subjects with CVI and 9 subjects of a similar age but with normal vision were recruited. Subjects were required to pick up a cylindrical object and a motion analysis system recorded and reconstructed the reaching and grasping movements in 3-D. Read More

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Clinical presentation and patterns of venous reflux in Thai patients with chronic venous insufficiency (CVI).

Eur J Vasc Endovasc Surg 2010 Sep 18;40(3):399-402. Epub 2010 Jun 18.

Vascular Unit, Department of Surgery, Bangkok Metropolitan Medical College, Vajira Hospital, 681 Samsain Rd., Dusit, Bangkok 10300, Thailand.

Objective: To study the extent of chronic venous insufficiency (CVI) in Thai patients by assessing venous clinical severity scores (VCSSs), venous disability scores (VDSs) and prevalence of lower limb venous reflux in a cohort of patients attending a vascular surgery clinic.

Design: Prospective comparative cohort study.

Material: All patients presenting with CVI (Clinical, Etiology, Anatomy and Pathophysiology (CEAP) C4-6) in our vascular surgery clinic between October 2006 and December 2008 were enrolled and compared with the same number of control patients. Read More

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September 2010

Advanced chronic venous insufficiency is associated with increased calf muscle deoxygenation.

Eur J Vasc Endovasc Surg 2010 Jun 15;39(6):787-94. Epub 2010 Mar 15.

Department of Plastic and Reconstructive Surgery, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan.

Objective: To determine the temporal relationship between changes in calf muscle deoxygenated haemoglobin (HHb) measured by near-infrared spectroscopy (NIRS) during light-intensity exercise and clinical stages of chronic venous insufficiency (CVI).

Design And Methods: Calf muscle HHb level was obtained in 168 limbs of 158 patients with various clinical stages of CVI. Clinical manifestations were categorised according to the CEAP classification (CEAP, clinical, etiological, anatomical and pathophysiological), and the patients were divided into two groups: early CVI (C(0-3),E(p)(,s),A(s)(,d,p),P(r)(,o)) and advanced CVI (C(4-6),E(p)(,s), A(s)(,d,p),P(r)(,o)). Read More

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[The effect of standing in the workplace and the development of chronic venous insufficiency].

Authors:
Arie Bass

Harefuah 2007 Sep;146(9):675-6, 734-5

Department of Vascular Surgery Assaf Harofeh Medical Center, Zerifin Ministry of Health, Sackler Faculty of Medicine, Tel Aviv University.

In the paper published by Shemesh et al. in this issue of Harefuah the authors present a theory according to which mechanical hydrostatic pressure generated by long periods of standing at the workplace is a major etiologic factor in the development of chronic venous insufficiency of the superficial venous system in the legs. Despite their opening remarks, concerning the complexity and controversiality of the etiology of this condition, the authors recommend that doctors and health authorities will take this "fact" into consideration when discussing working conditions and pass appropriate regulations ensuring enforcement. Read More

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September 2007

Prevalence and protein specificity of human antibodies to Inkoo virus infection.

Clin Vaccine Immunol 2007 Dec 17;14(12):1555-62. Epub 2007 Oct 17.

Department of Virology, Haartman Institute, P.O. Box 21 (Haartmaninkatu 3), FI-00014 University of Helsinki, Helsinki, Finland.

Inkoo virus (INKV), a member of the California serogroup orthobunyaviruses, is circulating widely in northern Europe. Although the virus was discovered over 40 years ago, the disease associations and immune responses in human infection are poorly characterized. We first developed an immunofluorescence assay (IFA) for the detection of INKV antibodies in humans, and then we studied a panel of 1,292 sera in patients with a febrile illness in Finland. Read More

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December 2007

Association of 24-hour activity levels with the clinical severity of chronic venous disease.

J Vasc Surg 2006 Sep;44(3):580-587

Department of Vascular Surgery, Queen Elizabeth Hospital, Gateshead, United Kingdom.

Introduction: The pathophysiology underlying the skin changes seen in chronic venous insufficiency (CVI) is multifactorial. Sedentary lifestyle and prolonged sitting and standing at work have been proposed by some authors to be influential in the development of CVI skin changes. This study compared the 24-hour activity profiles in patients with different clinical severities of CVI and normal controls. Read More

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September 2006

[Risk factors of chronic venous insufficiency of the lower extremities and possibilities of its medication in therapeutic practice].

Ter Arkh 2006 ;78(4):68-72

Aim: To verify incidence of risk factors of chronic venous insufficiency (CVI) of the lower limbs and efficacy of outpatient treatment.

Materials And Methods: A total of 4388 patients were examined by questioning and examination of the lower limbs. 1209 patients with CVI stages C1, C2 and C3 were included in the study. Read More

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Natural genetic variation in whole-genome expression in Arabidopsis thaliana: the impact of physiological QTL introgression.

Mol Ecol 2006 Apr;15(5):1351-65

The University of Texas at Austin, Section of Integrative Biology and Institute for Cellular and Molecular Biology, 1 University Station C0930, Austin, TX 78712, USA.

A long-standing and fundamental question in biology is how genes influence complex phenotypes. Combining near-isogenic line mapping with genome expression profiling offers a unique opportunity for exploring the functional relationship between genotype and phenotype and for generating candidate genes for future study. We used a whole-genome microarray produced with ink-jet technology to measure the relative expression level of over 21,500 genes from an Arabidopsis thaliana near-isogenic line (NIL) and its recurrent parent. Read More

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Severe chronic venous insufficiency treated by foamed sclerosant.

Ann Vasc Surg 2006 Jan;20(1):83-91

Vein Institute of La Jolla, La Jolla, CA, USA.

Our objective was to chronicle our experience in using sclerosant foam to treat severe chronic venous insufficiency (CVI). Forty-four patients with 60 limbs severely affected by severe CVI were entered into the study. They had lipodermatosclerosis, CEAP 4 (seven limbs); atrophie blanche or scars of healed venous ulcerations, CEAP 5 (18 limbs); and frank, open venous ulcers, CEAP 6 (35 limbs). Read More

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January 2006

Prevalence of chronic venous insufficiency in the Saudi adult population.

Saudi Med J 2005 Feb;26(2):225-9

Ministry of Primary Health Care, Jeddah, Kingdom of Saudi Arabia.

Objective: To estimate the prevalence of chronic venous insufficiency (CVI) in the Saudi adult population and to identify the association of CVI with possible risk factors.

Methods: Sixteen Primary Health Care (PHC) centers have been randomly selected in various districts of 3 major cities of Kingdom of Saudi Arabia, including Jeddah, Makkah and Dammam during the year 2001. Every Saudi patient, of both sexes and aged >18 years, visiting the selected PHC centres for any reason, was eligible. Read More

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February 2005

[Surgery for deep venous reflux in the lower limb].

Authors:
M Perrin

J Mal Vasc 2004 May;29(2):73-87

Unlabelled: Surgery for deep venous reflux (DVR) in the lower limb had displayed, for various reasons a much more limited development than arterial surgery including endovascular techniques. Importance and frequency of DVR in chronic venous disease and particularly in chronic venous insufficiency (CVI) has been fully identified only in the last 20 Years, thanks to the development of duplex-scanning. Despite its effectiveness, deep reconstructive surgery remains controversial which probably explains why this specific surgery is performed by few units worldwide. Read More

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Effect of graduated compression stockings on limb oxygenation and venous function during exercise in patients with venous insufficiency.

Vascular 2004 Jan;12(1):69-76

Cardiovascular Haemodynamic Unit, University Department of Surgery, Royal Free and University College Medical School, University College London and The Royal Free Hospital, London, UK.

Despite the established role of compression as the basis for nonoperative treatment of chronic venous insufficiency (CVI), its mechanism of action remains unclear. Near-infrared spectroscopy (NIRS) provides continuous noninvasive monitoring of changes in tissue oxyhemoglobin (HbO2) and deoxyhemoglobin (Hb). We applied NIRS to evaluate the effect of graded stockings on venous function and calf muscle oxygenation during exercise in patients with CVI. Read More

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January 2004

[Chronic venous insufficiency--outpatient study of risk factors].

Authors:
D Musil J Herman

Vnitr Lek 2004 Jan;50(1):14-20

II. interní klinika Lékarské fakulty UP a FN, Olomouc.

The aim of the clinical study was to monitor and analyse possible causes of chronic venous insufficiency (CVI) in a randomised sample of patients with diagnosed CVI. There were 100 patients in the investigated sample, 82 women of an average age of 40.4 years and 18 men of an average age of 42. Read More

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January 2004

Disturbed vasomotion in chronic venous insufficiency.

J Vasc Surg 2003 Sep;38(3):522-7

Department of Dermatology and Allergology, Ruhr-University, Bochum, Germany.

Background: Vasomotion is the slow rhythmic contraction of the smooth muscles of arterioles, metarterioles, and precapillary sphincters. It improves rheologic function of capillary blood flow and guarantees cellular nutrition and oxygen supply. Oxygen supply to the skin by blood can be quantified by measuring oxyhemoglobin concentration and hemoglobin oxygen saturation. Read More

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September 2003

The influence of environmental factors in chronic venous insufficiency.

Authors:
Arkadiusz Jawien

Angiology 2003 Jul-Aug;54 Suppl 1:S19-31

Department of Surgery, Ludwik Rydygier University Medical School, Bydgoszcz, Poland.

The present article focuses on the prevalence and risk factors for varicose veins and the severe stage of chronic venous insufficiency (CVI). The evaluation was made by reviewing the results of specific well-designed studies performed on the general population (case-control studies, cross-sectional studies, and large case series). Data from the literature were compared with the results of a recent multicenter cross-sectional study in Poland, in which 40,095 individuals from 803 registers of primary care physicians were clinically examined and assigned a clinical CEAP class. Read More

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September 2003