Cardiology · Vascular Medicine
The facts most likely to be tested
Chronic venous insufficiency results from venous valvular incompetence leading to venous hypertension and blood pooling in the lower extremities.
The classic clinical presentation includes dependent edema, aching pain, and skin hyperpigmentation due to hemosiderin deposition.
Physical examination often reveals lipodermatosclerosis, characterized by inverted champagne bottle legs and fibrotic skin changes.
Venous stasis ulcers are most commonly located at the medial malleolus and typically present with irregular borders and granulation tissue.
The gold standard diagnostic test for confirming venous reflux is venous duplex ultrasonography.
First-line management for all patients consists of leg elevation and the consistent use of compression stockings.
Patients with refractory symptoms or complications should be evaluated for endovenous ablation or sclerotherapy to eliminate the incompetent venous segments.
Vignette unlocked
A 62-year-old male with a history of deep vein thrombosis presents with a 3-month history of progressive heaviness in his lower legs. Physical examination reveals bilateral pitting edema, dark brown discoloration of the skin around the ankles, and induration of the subcutaneous tissue. A shallow, irregularly shaped ulcer is noted just superior to the medial malleolus. The patient reports that the pain improves with leg elevation.
What is the most appropriate initial management for this patient?
Leg elevation and compression stockings
The patient presents with classic signs of chronic venous insufficiency (hemosiderin staining, lipodermatosclerosis, and medial ulceration), for which conservative therapy with compression is the first-line intervention.
Full handout
High yield triage
Etiology / Epidemiology
Common in prolonged standing, obesity, and prior DVT. Results from venous valvular incompetence.
Clinical Manifestations
Presents with stasis dermatitis and medial malleolus ulcers. Look for brawny induration.
Diagnosis
Venous duplex ultrasound is the gold standard. Reflux >0.5 seconds confirms diagnosis.
Treatment
Leg elevation and compression stockings are first-line. Avoid compression if ABI <0.5.
Prognosis
Chronic condition requiring lifelong compression. Risk of venous stasis ulcers and cellulitis.
Full handout
Epidemiology & Etiology
Prevalence increases with age, female gender, and history of deep vein thrombosis. Venous hypertension is the primary driver of tissue damage. Occupations requiring prolonged standing are classic risk factors.
Pertinent Anatomy
Involves the superficial venous system (great/small saphenous veins) and perforator veins. Failure of the venous valves leads to retrograde blood flow and pooling in the lower extremities.
Pathophysiology
Valvular incompetence causes venous hypertension, leading to capillary leakage of fibrinogen and red blood cells. Extravasation of erythrocytes causes hemosiderin deposition, resulting in the characteristic hyperpigmentation. Chronic inflammation leads to lipodermatosclerosis and eventual skin ulceration.
Clinical Manifestations
Patients report heavy, aching legs that worsen throughout the day. Physical exam reveals stasis dermatitis, brawny induration, and lipodermatosclerosis (inverted champagne bottle legs). Ulcers are typically located at the medial malleolus. Red flags include signs of secondary cellulitis or acute DVT.
Diagnosis
Venous duplex ultrasound is the diagnostic test of choice. Reflux lasting >0.5 seconds in the superficial veins is diagnostic. Always perform an Ankle-Brachial Index (ABI) to rule out concomitant peripheral artery disease before initiating compression.
Treatment
Conservative management with leg elevation and compression stockings (20-30 mmHg) is the standard of care. Contraindicated if ABI <0.5 due to risk of arterial ischemia. Refractory cases may require endovenous thermal ablation or sclerotherapy.
Prognosis
Condition is progressive and requires lifelong compliance with compression therapy. Complications include recurrent cellulitis, non-healing ulcers, and rare malignant transformation known as Marjolin's ulcer.
Differential Diagnosis
Peripheral Artery Disease: pain relieved by rest, absent pulses
Lymphedema: non-pitting edema, involves dorsum of foot
Cellulitis: acute onset, warmth, systemic fever
DVT: acute, unilateral swelling, positive Homan's sign
Congestive Heart Failure: bilateral, pitting edema, JVD