Deep vein thrombosis resident survival guide

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Definition

Deep vein thrombosis (also known as deep venous thrombosis or DVT and colloquially referred to as economy class syndrome) is the formation of a blood clot ("thrombus") in a deep vein. The risk is significantly increased if the thrombus embolizes to the lungs, causing pulmonary embolism.

Causes

Common Causes

• long term immobility
• clotting disorders
• Cardiac failure
• Hip replacement
• Estrogen in OCP and HRT
• nephrotic syndrome
• Obesity
• Pregnancy

Diagnostic approach

Pretest Probability of DVT Major points *Active cancer

low*

Moderate*

High*

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