Chronic venous insufficiency

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Chronic venous insufficiency
Other namesChronic venous disease
VenousInsufficiency-left-a.jpg
Mild chronic venous insufficiency, with increased pigmentation of the lower legs.
SpecialtyVascular surgery

Chronic venous insufficiency (CVI) is a medical condition in which blood pools in the veins, straining the walls of the vein.[1] The most common cause of CVI is superficial venous reflux which is a treatable condition.[2] As functional venous valves are required to provide for efficient blood return from the lower extremities, this condition typically affects the legs. If the impaired vein function causes significant symptoms, such as swelling and ulcer formation, it is referred to as chronic venous disease. It is sometimes called chronic peripheral venous insufficiency and should not be confused with post-thrombotic syndrome in which the deep veins have been damaged by previous deep vein thrombosis.

Most cases of CVI can be improved with treatments to the superficial venous system or stenting the deep system. Varicose veins for example can now be treated by local anesthetic endovenous surgery.

Rates of CVI are higher in women than in men.[3][4] Other risk factors include genetics, smoking, obesity, pregnancy, and prolonged standing.[5]

Signs and symptoms[edit]

Chronic venous insufficiency

Signs and symptoms of CVI in the leg include the following:

CVI in the leg may cause the following:

Causes[edit]

Venous valves

The most common cause of chronic venous insufficiency is reflux of the venous valves of superficial veins.[2] This may in turn be caused by several conditions:

  • Deep vein thrombosis (DVT), that is, blood clots in the deep veins. Chronic venous insufficiency caused by DVT may be described as postthrombotic syndrome. DVT which triggers an inflammatory response subsequently injuring the vein wall.[5]
  • Superficial vein thrombosis.
  • Phlebitis
  • May–Thurner syndrome. This is a rare condition in which blood clots occur in the iliofemoral vein due to compression of the blood vessels in the leg. The specific problem is compression of the left common iliac vein by the overlying right common iliac artery. Many May-Thurner compressions are overlooked when there is no blood clot. More and more of them get nowadays diagnosed and treated (by stenting) due to advanced imaging techniques.[citation needed]

Deep and superficial vein thrombosis may in turn be caused by thrombophilia, which is an increased propensity of forming blood clots.

Arteriovenous fistula (an abnormal connection or passageway between an artery and a vein) may cause chronic venous insufficiency even with working vein valves.

Diagnosis[edit]

B-flow ultrasonograph over a valve of the great saphenous vein, showing a venous reflux (flow toward right in the image).

History and examination by a clinician for characteristic signs and symptoms are sufficient in many cases in ruling out systemic causes of venous hypertension such as hypervolemia and heart failure.[8] A duplex ultrasound (doppler ultrasonography and b-mode) can detect venous obstruction or valvular incompetence as the cause, and is used for planning venous ablation procedures, but it is not necessary in suspected venous insufficiency where surgical intervention is not indicated.[8][5]

Insufficiency within a venous segment is defined as reflux of more than 0.5 seconds with distal compression. Invasive venography can be used in patients who may require surgery or have suspicion for venous stenosis. Other modalities that may be employed are: ankle-brachial index to exclude arterial pathology, air or photoplethysmography, intravascular ultrasound, and ambulatory venous pressures, which provides a global assessment of venous competence. Venous plethysmography can assess for reflux and muscle pump dysfunction but the test is laborious and rarely done.[5]

The venous filling time after the patient is asked to stand up from a seated position also is used to assess for CVI. Rapid filling of the legs less than 20 seconds is abnormal.[5]

Classification[edit]

Acute ulcer (45 x 30 mm).

CEAP classification is based on Clinical, Etiological (causal), Anatomical, and Pathophysiological factors.[9] According to Widmer classification diagnosis of chronic venous insufficiency is clearly differentiated from varicose veins.[10] It has been developed to guide decision-making in chronic venous insufficiency evaluation and treatment.[5]

The CEAP classification for CVI is as follows:

C0: no obvious feature of venous disease C1: the presence of reticular or spider veins C2: Obvious varicose veins C3: Presence of edema but no skin changes C4: skin discoloration, pigmentation C5: Ulcer that has healed C6: Acute ulcer

Etiology

Primary Secondary (trauma, birth control pill) Congenital (Klipper trenaunay) No cause is known

Anatomic

Superficial Deep Perforator No obvious anatomic location

Pathophysiology

Obstruction, thrombosis Reflux Obstruction and reflux No venous pathology

Management[edit]

Conservative[edit]

Conservative treatment of CVI in the leg involves symptomatic treatment and efforts to prevent the condition from getting worse instead of effecting a cure. This may include

  • Manual compression lymphatic massage therapy
  • Red vine leaf extract may have a therapeutic benefit.[11]
  • Sequential compression pump
  • Ankle pump
  • Compression stockings
  • Blood pressure medicine
  • Hydroxyethylrutoside medication[12]
  • Frequent periods of rest elevating the legs above the heart level
  • Tilting the bed so that the feet are above the heart. This may be achieved by using a 20 cm (7-inch) bed wedge or sleeping in a 6 degree Trendelenburg position.

Surgical[edit]

Surgical treatment of CVI attempts a cure by physically changing the veins with incompetent valves. Surgical treatments for CVI include the following:

Venous insufficiency conservative, hemodynamic and ambulatory treatment (CHIVA method) is an ultrasound guided, minimally invasive surgery strategic for the treatment of varicose veins, performed under local anaesthetic.[14]

Prognosis[edit]

CVI is not a benign disorder and, with its progression, can lead to morbidity. Venous ulcers are common and very difficult to treat. Chronic venous ulcers are painful and debilitating. Even with treatment, recurrences are common if venous hypertension persists. Nearly 60% develop phlebitis which often progresses to deep vein thrombosis in more than 50% of patients. The venous insufficiency can also lead to severe hemorrhage. Surgery for CVI remains unsatisfactory despite the availability of numerous procedures.[5]

See also[edit]

References[edit]

  1. ^ "Chronic Venous Insufficiency". Society for Vascular Surgery. December 1, 2009.
  2. ^ a b Whiteley MS (2011). "Understanding Venous Reflux - the cause of varicose veins and venous leg ulcers". Whiteley Publishing. Archived from the original on October 25, 2017. Retrieved January 8, 2015. CS1 maint: discouraged parameter (link)
  3. ^ Evans CJ, Fowkes FG, Ruckley CV, Lee AJ (1999). "Prevalence of varicose veins and chronic venous insufficiency in men and women in the general population: Edinburgh Vein Study". Journal of Epidemiology & Community Health. J Epidemiol Community Health. 53 (3): 149–153. doi:10.1136/jech.53.3.149. PMC 1756838. PMID 10396491.
  4. ^ Robertson LA, Evans CJ, Lee AJ, Allan PL, Ruckley CV, Fowkes FG (May 2014). "Incidence and risk factors for venous reflux in the general population: Edinburgh Vein Study. Eur J Vasc Endovasc Surg. 2014 Aug;48(2):208-14. doi: 10.1016/j.ejvs.2014.05.017. Epub 2014 Jun 18". European Journal of Vascular and Endovascular Surgery. Eur J Vasc Endovasc Surg. 48 (2): 208–14. doi:10.1016/j.ejvs.2014.05.017. PMID 24951373. Retrieved January 8, 2015. CS1 maint: discouraged parameter (link)
  5. ^ a b c d e f g Patel, Shivik K.; Surowiec, Scott M. (2020). "Venous Insufficiency". StatPearls. StatPearls Publishing. Retrieved 9 July 2020. CS1 maint: discouraged parameter (link) CC-BY icon.svg Text was copied from this source, which is available under a Creative Commons Attribution 4.0 International License.
  6. ^ Avril, Stéphane; Badel, Pierre; Dubuis, Laura; Rohan, Pierre-Yves; Debayle, Johan; Couzan, Serge; Pouget, Jean-Fraçois (25 January 2012). Gefen, Amit (ed.). Patient-Specific Modeling in Tomorrow's Medicine. Springer. p. 218, 220. ISBN 9783642246180. Retrieved 12 November 2020. CS1 maint: discouraged parameter (link)
  7. ^ a b c d e f g h i Barron GS, Jacob SE, Kirsner RS (Sep 2007). "Dermatologic complications of chronic venous disease: medical management and beyond". Ann Vasc Surg. 21 (5): 652–62. doi:10.1016/j.avsg.2007.07.002. PMID 17823046.
  8. ^ a b Patrick C Alguire, Barbara M Mathes. "Diagnostic evaluation of lower extremity chronic venous insufficiency". Retrieved 2017-09-12. CS1 maint: discouraged parameter (link) Topic last updated: Dec 04, 2017.
  9. ^ Antignani, P. L. (August 2001). "Classification of chronic venous insufficiency: a review". Angiology. 52 Suppl 1: S17–26. doi:10.1177/0003319701052001S03. ISSN 0003-3197. PMID 11510593. S2CID 45542090.
  10. ^ Hafner, Jürg (1999-01-01). Management of Leg Ulcers. Karger Medical and Scientific Publishers. p. 81. ISBN 9783805566544.
  11. ^ Maryam Azhdari, Marzie Zilaee, Majid Karandish, Seyed Ahmad Hosseini, Anahita Mansoori, Mohadeseh Zendehdel, Sara Khodarahpour (2020). "Red Vine Leaf Extract (AS 195) Can Improve Some Signs and Symptoms of Chronic Venous Insufficiency, a Systematic Review". Phytotherapy Research. 34 (10): 2577–2585. doi:10.1002/ptr.6705. PMID 32314844. S2CID 216047649.CS1 maint: uses authors parameter (link)
  12. ^ Frick, RW (March 2000). "Three treatments for chronic venous insufficiency: escin, hydroxyethylrutoside, and Daflon". Angiology. 51 (3): 197–205. doi:10.1177/000331970005100303. PMID 10744007. S2CID 19421726.
  13. ^ a b c d e "Chronic Venous Insufficiency". hopkinsmedicine.org.
  14. ^ Mowatt-Larssen, Eric; Shortell, Cynthia (2010). "CHIVA". Seminars in Vascular Surgery. 23 (2): 118–22. doi:10.1053/j.semvascsurg.2010.01.008. PMID 20685567.

External links[edit]

Classification
External resources