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Emergency and Acute Medicine: Venous Insufficiency
Chronic venous insufficiency is a condition in which dysfunctional venous valves impair normal one-way blood flow from the lower extremities back to the heart. This leads to venous hypertension, causing edema, skin changes, and eventually ulcer formation. It is a chronic vascular disorder most commonly affecting the lower limbs.
Normally, venous blood flows from superficial to deep veins with the aid of muscle contraction and competent valves. When these valves are damaged—commonly after Deep vein thrombosis—they fail to prevent backward flow (reflux). This results in increased venous pressure, vein dilation, and separation of valve leaflets, further worsening the condition. Over time, elevated pressure in the dermal microcirculation leads to leakage of proteins and red blood cells, triggering inflammation, skin damage, and poor wound healing.
The most common cause is primary valve incompetence, although secondary causes such as prior DVT are important. Risk factors include advanced age, obesity, sedentary lifestyle, smoking, pregnancy, family history, and lower extremity trauma.
Patients may initially be asymptomatic or present with mild venous dilation such as telangiectasias or small varicosities. As the disease progresses, symptoms include leg swelling (especially at the ankle and calf), varicose veins, dull aching pain, burning sensation, pruritus, and night cramps. Symptoms typically worsen with prolonged standing and improve with leg elevation. Chronic changes include skin hyperpigmentation (brownish discoloration), stasis dermatitis, lipodermatosclerosis (skin thickening and fibrosis), and venous ulcers—most commonly located near the medial malleolus.
On examination, findings include dependent edema, visible varicose veins, skin discoloration, and ulceration. It is critical to confirm the presence of intact peripheral pulses, as absence suggests arterial insufficiency rather than venous disease. Signs of infection such as cellulitis, purulent drainage, or fever should also be assessed.
Diagnosis is primarily clinical, but imaging is useful when the diagnosis is uncertain or complications are suspected. Duplex ultrasonography is the preferred modality, as it evaluates venous anatomy, detects reflux, and helps rule out DVT. Additional tests such as Doppler studies or ankle–brachial index may be used to differentiate venous from arterial disease.
Management in the emergency setting focuses on symptom control and prevention of complications. Key measures include leg elevation above heart level, use of compression stockings, and proper wound care for ulcers. Barrier creams and dressings help protect the skin and promote healing. Antibiotics are indicated if there is evidence of infection such as cellulitis or infected ulcers. Anticoagulation is required if DVT is confirmed. Aspirin may aid ulcer healing, and topical steroids or antihistamines can be used for dermatitis and pruritus.
Patients should be admitted if there is concern for arterial insufficiency, severe infection (e.g., cellulitis, lymphangitis, osteomyelitis), or complicated DVT. Most patients can be managed as outpatients if pulses are intact, infection is controlled, and appropriate follow-up is arranged. Referral to primary care or vascular surgery is recommended for ongoing management. Definitive treatments such as vein stripping, ligation, sclerotherapy, or endovenous ablation may be considered in refractory cases but are not emergent.
A key clinical point is to exclude arterial insufficiency before initiating compression therapy, as compression is contraindicated in patients with significant peripheral arterial disease.
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