Search results for "Lower limbs venous ultrasonography"
showing 4 items of 4 documents
Sex-related differences in D-dimer levels for venous thromboembolism screening.
2021
Background D-dimer is generally considered positive above 0.5 mg/L irrespective of sex. However, women have been shown to be more likely to have a positive D-dimer after controlling for other factors. Thus, differences may exist between males and females for using D-dimer as a marker of venous thromboembolic (VTE) disease. We hypothesized that the accuracy of D-dimer tests may be enhanced by using appropriate cutoff values that reflect sex-related differences in D-dimer levels. Methods This research is a secondary analysis of a multicenter, international, prospective, observational study of adult (18+ years) patients suspected of VTE, with low-to-intermediate pretest probability based on We…
Ultrasound (US) guided central venous catheterization of internal jugular vein on over 65-year-old patients versus blind technique.
2004
Background and Objectives Performing a central venous catheterization (CVC) on older patients for long-term central intravenous therapy could be a very important procedure. It could be associated with a high incidence of related complications, especially on over 65-year-old, high risk, selected patients. Methods The authors analyzed the results of 72 central venous CVC of internal jugular vein performed on over 65-year-old patients with ultrasound (US) guide from January 1998 to April 2003. Results The average performing time was 4 min, with 98.7% of success, 0% of major complications, and 4.1% of minor complications (one mild vagal hypotension and two catheter dislocation). Conclusions The…
Ultrasound in Varicose Vein Treatment
2014
Diagnosis is a prerequisite for all treatment strategies. Duplex ultrasound is the best diagnostic tool for varicose veins for all expressions of the disease (Nicolaides Circulation 102:126–163, 2000). All types of intervention on varicose veins have their own special demands on ultrasound. Ultrasound-guided vein mapping on the skin is very helpful prior to saphenous stripping (See Sect. 12.1), and it is absolutely indispensible for CHIVA (See Sect. 12.2). In endovascular thermal therapies (See Sect. 12.3) or foam sclerotherapy of trunk veins (See Sect. 12.4), ultrasound is an essential part of the treatment process. The actual procedures will only be explained here in relation to ultrasoun…
Diagnostic accuracy of Doppler sonography and magnetic resonance venography for the assessmentv of impaired outflow from the internal jugular vein in…
2015
Objectives: This prospective study was aimed at evaluation of diagnostic value of Doppler sonography and magnetic resonance (MR) venography in the internal jugular vein territory. Material and methods: There were assessed 126 patients (252 internal jugular veins). The patients were initially diagnosed using Doppler sonography and MR venography, and then catheter venography of the veins was performed. For the purpose of this study catheter venography was regarded the reference test. We interpreted sonographic findings in the context of criteria proposed by Zamboni and criteria by International Society for Neurovascular Disease (ISNVD). We applied MR protocols aimed at flow assessment in the …