Doppler Ultrasonography-Aided Early Diagnosis of Venous Thromboembolism after Total Knee Arthroplasty.
Summary of "Doppler Ultrasonography-Aided Early Diagnosis of Venous Thromboembolism after Total Knee Arthroplasty."
Postoperative deep venous thrombosis (DVT) is usually asymptomatic but can result in a fatal pulmonary embolism (PE). To assess the ability of transcranial Doppler (TCD) ultrasound apparatus to detect venous emboli in patients who had undergone total knee arthroplasty (TKA).
Forty-eight patients undergoing TKA were examined postoperatively by using compression ultrasonography, computed tomographic angiography, and TCD ultrasonography that detected high-intensity transient signals (HITS) in femoral veins. An original scoring system based on both the number of HITS and the locations of DVT was tested for its accuracy in predicting PE development.
Twenty-three of the 48 patients had DVT postoperatively, and 8 had an asymptomatic PE. The sensitivity and specificity of the HITS assessment alone in identifying PE development were 75% and 92.5%, respectively. The scoring system, however, had a sensitivity of 100% and a specificity of 85% and the area under the receiver operating characteristic (ROC) curve (AUC) was 0.96.
Application of a scoring system based on the detection of both DVT and HITS may be an effective and efficient method of screening for PE after knee arthroplasty.
Department of Vascular and Applied Surgery, Tokyo Medical and Dental University, Graduate School, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan.
This article was published in the following journal.
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20732825
- DOI: http://dx.doi.org/10.1016/j.ejvs.2010.08.002
Venous thromboembolism (VTE) in patients with upper gastrointestinal (GI) cancer increases morbidity and mortality. This study aimed to determine the prevalence of VTE at diagnosis of upper GI cancer.
Introduction: Patients with a second venous thromboembolism generally receive anticoagulant treatment for indefinite duration, although it is known that the recurrence risk diminishes over time while ...
Penile fracture is the rupture of tunica albuginea, typically resulting from blunt trauma, intercourse, or penile manipulation. Diagnosis is made clinically. Ultrasound is not used frequently in diagn...
We performed this meta-analysis to assess venous thromboembolism risk in patients with idiopathic inflammatory myositis (IIM). A comprehensive search was performed in MEDLINE, EMBASE and the Cochrane ...
Amniotic band syndrome is a rare disorder which is thought to be caused by early rupture of the amniotic membrane. The extent of the disease may vary from minor digital amputations to severe lethal an...
Cancer is a well known risk factor for venous thromboembolism (VTE) such as deep venous thrombosis (DVT) and pulmonary embolism (PE). Today we know that patients with adenocarcinomas of th...
The aim of this study is to verify, through clinical examination and doppler, the non-inferiority of the drug test (heparin sodium 5.000UI/0.25 mL - HIPOLABOR) in relation to the drug comp...
The purpose of this study is to compare the data obtained by computer-aided quantification of the synovial perfusion in patients with arthritis using two-dimensional and three-dimensional ...
The purpose of this study is to determine the risk of fetal loss in women with unprovoked venous thromboembolism (VTE) who do not have identifiable inherited thrombophilia compared with wo...
The main objective of the study is to develop or validate a clinical prediction rule for major bleeding in patients on oral anticoagulant therapy who have been safely anticoagulated witho...
Medical and Biotech [MESH] Definitions
Ultrasonography applying the Doppler effect combined with real-time imaging. The real-time image is created by rapid movement of the ultrasound beam. A powerful advantage of this technique is the ability to estimate the velocity of flow from the Doppler shift frequency.
Ultrasonography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region.
Ultrasonography applying the Doppler effect, with velocity detection combined with range discrimination. Short bursts of ultrasound are transmitted at regular intervals and the echoes are demodulated as they return.
Ultrasonography applying the Doppler effect, with frequency-shifted ultrasound reflections produced by moving targets (usually red blood cells) in the bloodstream along the ultrasound axis in direct proportion to the velocity of movement of the targets, to determine both direction and velocity of blood flow. (Stedman, 25th ed)
Methods to determine in patients the nature of a disease or disorder at its early stage of progression. Generally, early diagnosis improves PROGNOSIS and TREATMENT OUTCOME.