%0 Journal Article
%T Diagnosis of Deep Venous Thrombosis after Total Knee Arthroplasty: A Comparison of Ultrasound and Venography Studies.
%A Ching-Jen Wang
%A Chung-Cheng Huang
%A Pao-Chu Yu
%A Han-Hsiang Chen
%J Chang Gung Medical Journal
%D 2004
%I 
%X Background: A prospective clinical study was performed to compare the diagnostic accuracybetween ultrasound and venography of deep venous thrombosis (DVT)after total knee arthroplasty (TKA).Methods: This series consisted of 55 patients (43 women and 12 men) with an averageage of 61 (range, 51-81) years who underwent TKA. No pharmaceutical prophylaxisfor DVT was administered. Ultrasound and venographic studieswere performed to detect DVT within 5 to 7 days postoperatively.Results: The incidence of DVT was 36% (20 of 55) by clinical examination, 42% (23of 55) by ultrasound study, and 58% (32 of 55) with venography. The differencein number of cases of DVT determined between ultrasound and venographystudy was marginally significant statistically ( p = 0.082). When thevenographic results were used as the baseline reference, the sensitivity andspecificity of the ultrasound study in the diagnosis of DVT after TKA were87% and 63%, respectively.Conclusion: Ultrasound is a reasonably good alternative to venography in the diagnosis ofDVT after TKA. Ultrasound is non-invasive, safe, and convenient.Ultrasound can be used as the initial screening test for clinically suspectedDVT to be followed by venography in cases of equivocal results of the ultrasoundstudy and in patients with negative ultrasound results but clinicallyevident DVT.
%K deep venous thrombosis
%K ultrasound
%K venography
%K total knee arthroplasty.
%U http://memo.cgu.edu.tw/cgmj/2701/270102.pdf