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Management of peripheral arterial disease in the elderly
Published in Wilbert S. Aronow, Jerome L. Fleg, Michael W. Rich, Tresch and Aronow’s Cardiovascular Disease in the Elderly, 2019
Duplex ultrasonography combines Doppler frequency measurements with two-dimensional images of blood vessels. The severity of flow restriction caused by an arterial stenosis can be accurately assessed by this most comprehensive noninvasive method (12).
Acute central venous thrombosis in the setting of central lines, pacemaker wires, and dialysis catheters
Published in Peter Gloviczki, Michael C. Dalsing, Bo Eklöf, Fedor Lurie, Thomas W. Wakefield, Monika L. Gloviczki, Handbook of Venous and Lymphatic Disorders, 2017
Syed Ali Rizvi, Anil Hingorani, Enrico Ascher
Nevertheless, due to its noninvasive nature and cost advantage, duplex ultrasonography is initially recommended. If the duplex examination fails to reveal any thrombosis and clinical suspicion remains high, either computed tomography venography or magnetic resonance venography (MRV) may be needed to confirm diagnosis. Finally, venography remains the gold standard for the diagnosis of central vein thrombosis.
Complications Associated with the Use of Invasive Devices in the Intensive Care Unit
Published in Stephen M. Cohn, Matthew O. Dolich, Complications in Surgery and Trauma, 2014
Venous thrombosis can be diagnosed by duplex ultrasonography. However, duplex ultrasound is unable to adequately visualize the subclavian vein deep to the clavicle. This limitation is partially overcome by the fact that the presence of subclavian thrombosis can be predicted by a lack of flow in the internal jugular or axillary vein. This observation of a lack of flow may be adequate for the diagnosis of thrombosis. However, if a patient exhibits symptoms such as superficial venous engorgement, unilateral arm swelling, pain, and discoloration, contrast venography should be performed even if the findings of venous duplex ultrasonography are negative.
A systematic review of standardized methods for assessment of endograft sealing on computed tomography angiography post-endovascular aortic repair, and its influence on endograft-associated complications
Published in Expert Review of Medical Devices, 2019
Richte C.L. Schuurmann, Philippe M. De Rooy, Frederico Bastos Gonçalves, Cornelis G. Vos, Jean-Paul P.M. De Vries
This systematic review has described three standardized methods to assess apposition of the endograft with the arterial wall and position relative to the target vessels on post-(T)EVAR CTA, each with pros and cons, but similar precision. Proper EVAR surveillance should include an assessment of the endograft apposition on postoperative CTA scans to stratify risk for later endograft-related complications. We should use the information of the CT scans to their full extent, so we can justify the exposure to contrast and radiation. Proximal and distal apposition length <10 mm is insufficient, and a decrease of apposition during follow-up predicts later seal failure. If these signs are determined on a post-EVAR CT scan, it is advised to consider treatment or perform regular CTA follow-up instead of duplex ultrasonography, especially in high-risk patients. The literature on TEVAR is insufficient for proper advice on postoperative surveillance.
Outcome of Direct Oral Anticoagulant Treatment for Acute Lower Limb Deep Venous Thrombosis After Total Knee Arthroplasty Or Total Hip Arthroplasty
Published in Modern Rheumatology, 2019
Takeshi Mochizuki, Katsunori Ikari, Koichiro Yano, Ryo Hiroshima, Mina Ishibashi, Ken Okazaki
The Chest guidelines suggest that treatment of post-operative DVT in the leg should be administered for three months [7]. The primary efficacy outcome of this study was disappearance of DVT at three months. The diagnosis of acute DVT was based on ultrasonography. Venous sonography with duplex ultrasound has widely become the primary diagnostic method for DVT. Acute DVT is diagnosed when solid echoes are observed within veins or when the venous lumen does not collapse, despite compression with an echo probe [8]. In this study, the DVT diagnosis was based on the guidelines developed by the Terminology and Diagnostic Criteria Committee of the Japan Society of Ultrasonics in Medicine [9]. Moreover, to increase diagnostic accuracy, color Doppler was used in combination. The sensitivity and specificity of duplex ultrasonography as a screening test for DVT were 80% and 90%, respectively [10]. The screening for post-operative acute DVT was performed on posto-perative days 1, 2, 4, 7, 10, and 14.
Preoperative evaluation of moyamoya spontaneous anastomosis of combined revascularization donor vessels in adults by duplex ultrasonography
Published in British Journal of Neurosurgery, 2018
Li Chen, Bin Xu, Yong Wang, Yujun Liao, Huiwen Pan, Yi Wang
Duplex ultrasonography is a noninvasive, repeatable, and economical technique, which is widely applied in the diagnosis of cerebral diseases. Nowadays, duplex ultrasonography is the first choice to obtain images of the carotid artery and could also be applied to evaluate the cerebral hemodynamics.8 Several studies have focused on the use of ultrasonography in the direct revascularization,9,10 whereas the publications on indirect revascularization techniques are scarce. We previously reported the application of duplex ultrasonography in combined (direct/indirect) revascularization in adult moyamoya disease.11 In this study, we assessed the preoperative application of duplex ultrasonography in the analyses of spontaneous anastomoses from the external carotid artery (STA and MA) to the intracranial vessels.