👩⚕️ Scanning & Imaging Tips: Optimize Compression
A common mistake made during lower-extremity DVT examination is applying insufficient transducer pressure to fully collapse the target vessel's lumen. The deep vein in this accompanying clip does not fully collapse as a result of insufficient transducer pressure applied by a novice operator, which could easily lead to a misdiagnosis of DVT. Subtle mispositioning of the transducer or applying a force vector to the transducer that is not directed through the vessel often makes applying sufficient pressure to collapse a deep vein challenging, especially in patients with a large body habitus. Documenting complete collapsibility of a vein is the most important step required to exclude venous thrombosis (Ageno et al., Mazzolai et al.). Hence, operators must be very diligent in the application of sufficient pressure to ensure complete luminal collapse of the vein of interest.
Ageno W, Squizzato A, Wells PS, et al. The diagnosis of symptomatic recurrent pulmonary embolism and deep vein thrombosis: guidance from the SSC of the ISTH. J Thromb Haemost. 2013 Aug;11(8):1597-1602.
Mazzolai L, Aboyans V, Ageno W, et al. Diagnosis and management of acute deep vein thrombosis: a joint consensus document from the European Society of Cardiology working groups of aorta and peripheral circulation, pulmonary circulation, and right ventricular function. Eur Heart J. Epub 2017 Feb 17.
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