What is the role of impedance plethysmography (IPG) in the workup of deep venous thrombosis (DVT)?

Updated: Jun 05, 2019
  • Author: Kaushal (Kevin) Patel, MD; Chief Editor: Barry E Brenner, MD, PhD, FACEP  more...
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In some countries, impedance plethysmography (IPG) has been the initial noninvasive diagnostic test of choice and has been shown to be sensitive and specific for proximal vein thrombosis. However, IPG also has several other limitations; among them are insensitivity for calf vein thrombosis, nonoccluding proximal vein thrombus, and iliofemoral vein thrombosis above the inguinal ligament.

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