Radial loop and extreme vessel tortuosity in the transradial approach: Advantage of hydrophilic-coated guidewires and catheters

2003 ◽  
Vol 59 (4) ◽  
pp. 442-450 ◽  
Author(s):  
G�rald R. Barbeau
Keyword(s):  
Transradial Approach ◽  
Radial Loop ◽  
Vessel Tortuosity

Endovascular management of radial artery loop for neuroangiography: Case series

2020 ◽  
pp. 159101992098281
Author(s):  
Rimal H Dossani ◽  
Muhammad Waqas ◽  
Michael K Tso ◽  
Justin M Cappuzzo ◽  
Daniel Popoola ◽  
...  
Keyword(s):  
Radial Artery ◽  
Descriptive Analysis ◽  
Case Series ◽  
Endovascular Management ◽  
Transradial Approach ◽  
Significant Challenge ◽  
Radial Loop ◽  
Transradial Access ◽  
Loop Pattern ◽  
Artery Branch

Background Radial loops are rare congenital radial artery anomalies that may pose a significant challenge to successful transradial neuroangiography. In this case series, we describe the anatomy and frequency of radial artery loops and provide a technique for successful navigation of this anatomic anomaly. Methods We reviewed our database of radial diagnostic or interventional neuroangiographic procedures to identify cases in which a radial loop was encountered during the procedure. The loop pattern, the presence of an associated recurrent radial artery branch, navigation technique, and procedure-related complications were recorded. A descriptive analysis was performed. Results A total of 997 transradial approach procedures were performed over a 9-month period. A radial loop was identified in 10 (1.0%) patients. The average age was 68.6 ± 14.3 years. A microcatheter advanced over a microwire was used to navigate the loop and avoid entry into the recurrent branch. A diagnostic neuroangiographic procedure was performed successfully in 8 cases and an intervention was performed successfully in 1 case. A 360° loop was present in 2 of these cases. In each case, transradial access was performed successfully. In 1 other diagnostic case, transradial access was aborted, and the femoral artery was accessed to perform the procedure. Conclusions A radial loop was present in 1% of the cases in this series. Our technical results suggest that this anomaly should not be considered a contraindication to transradial neuroangiography because the procedure was successfully performed in most (9 of 10) cases using a microcatheter system to navigate the loop.

Downsizing – the Future of Interventional Cardiology

2012 ◽  
Vol 7 (1) ◽  
pp. 28
Author(s):  
Giovanni Amoroso ◽  
Keyword(s):  
Contrast Agent ◽  
Vascular Complications ◽  
Cost Savings ◽  
Length Of Hospital Stay ◽  
Interventional Cardiology ◽  
Coronary Intervention ◽  
Transradial Approach ◽  
Technical Developments ◽  
Coronary Procedures ◽  
Angiographic Image

The concept of downsized catheters (i.e., using catheters smaller than 6 French) for invasive coronary procedures, such as diagnostic cardiac catheterisation and percutaneous coronary intervention, has been developing over the years, particularly as a result of the rise of the transradial approach. Recent advances have allowed the use of smaller and sheathless catheters, which confer a number of advantages – such as fewer vascular complications, reduced use of contrast agent and reduced haemostasis – thus increasing patient safety and comfort and allowing more rapid patient mobilisation. Reductions in patient complications, number and length of hospital stay, and amount of contrast agent used can also lead to cost savings. While the use of smaller catheters has been hindered in the past because of poor angiographic image quality, new automated contrast injectors have helped overcome this limitation. There is a need to make interventional cardiologists worldwide more aware of the benefits of downsizing, in the light of the latest technical developments and the increased use of transradial approach.

Transradial Approach for Coronary Angiography and Intervention—Ready for Prime Time?

2010 ◽  
Vol 7 (1) ◽  
pp. 81-84
Author(s):  
Olivier F Bertrand ◽  
Tift Mann ◽  
◽  
Keyword(s):  
Coronary Angiography ◽  
Prime Time ◽  
Transradial Approach

Access-site complications of the transradial approach: Rare but still there.

2020 ◽  
Vol 16 ◽  
Author(s):  
Stelina Alkagiet ◽  
Dimitrios Petroglou ◽  
Dimitrios N. Nikas ◽  
Theofilos M. Kolettis
Keyword(s):  
Radial Artery ◽  
Artery Occlusion ◽  
Tissue Loss ◽  
Access Site ◽  
Transradial Approach ◽  
Financial Benefits ◽  
Eversion Endarterectomy ◽  
Life Threatening ◽  
Sheath Insertion ◽  
Venous Fistula

: In the past decade, the Transradial Approach (TRA) has constantly gained ground among interventional cardiologists. TRA's anatomical advantages, in addition to patients' acceptance and financial benefits, due to rapid patient mobilization and shorter hospital stay, made it the default approach in most catheterization laboratories. Access-site complications of TRA are rare, and usually of little clinical impact, thus they are often overlooked and underdiagnosed. Radial Artery Occlusion (RAO) is the most common, followed by radial artery spasm, perforation, hemorrhagic complications, pseudoaneurysm, arterio-venous fistula and even rarer complications, such as nerve injury, sterile granuloma, eversion endarterectomy or skin necrosis. Most of them are conservatively treated, but rarely, surgical treatment may be needed and late diagnosis may lead to life-threatening situations, such as hand ischemia or compartment syndrome and tissue loss. Additionally, some complications may eventually lead to TRA failure and switch to a different approach. On the other hand, it is the opinion of the authors that non-occlusive radial artery injury, commonly included in TRA's complications in the literature, should be regarded more as an anticipated functional and anatomical cascade, following radial artery puncture and sheath insertion.

scholarly journals Distinguishing Adenocarcinomas from Granulomas in the CT scan of the chest: performance degradation evaluation in the automatic segmentation framework

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Mahsa Bank Tavakoli ◽  
Mahdi Orooji ◽  
Mehdi Teimouri ◽  
Ramita Shahabifar
Keyword(s):  
State Of The Art ◽  
Automatic Segmentation ◽  
Texture Features ◽  
Standards Of Care ◽  
Shape Features ◽  
Selection Methods ◽  
Segmentation Framework ◽  
Vessel Tortuosity ◽  
Benign Nodules ◽  
Degradation Evaluation

Abstract Objective The most common histopathologic malignant and benign nodules are Adenocarcinoma and Granuloma, respectively, which have different standards of care. In this paper, we propose an automatic framework for the diagnosis of the Adenocarcinomas and the Granulomas in the CT scans of the chest from a private dataset. We use the radiomic features of the nodules and the attached vessel tortuosity for the diagnosis. The private dataset includes 22 CTs for each nodule type, i.e., adenocarcinoma and granuloma. The dataset contains the CTs of the non-smoker patients who are between 30 and 60 years old. To automatically segment the delineated nodule area and the attached vessels area, we apply a morphological-based approach. For distinguishing the malignancy of the segmented nodule, two texture features of the nodule, the curvature Mean and the number of the attached vessels are extracted. Results We compare our framework with the state-of-the-art feature selection methods for differentiating Adenocarcinomas from Granulomas. These methods employ only the shape features of the nodule, the texture features of the nodule, or the torsion features of the attached vessels along with the radiomic features of the nodule. The accuracy of our framework is improved by considering the four selected features.

Transradial approach for coronary chronic total occlusion interventions: Insights from a contemporary multicenter registry

2015 ◽  
Vol 85 (7) ◽  
pp. 1123-1129 ◽  
Author(s):  
Khaldoon Alaswad ◽  
Rohan V. Menon ◽  
Georgios Christopoulos ◽  
William L. Lombardi ◽  
Dimitri Karmpaliotis ◽  
...  
Keyword(s):  
Chronic Total Occlusion ◽  
Total Occlusion ◽  
Transradial Approach ◽  
Multicenter Registry

scholarly journals Trends in the Use of the Transradial Approach in More Than a Decade: The InCor’s Experience

2014 ◽  
Vol 22 (2) ◽  
pp. 120-124
Author(s):  
Carlos Vinícius Abreu do Espírito Santo ◽  
Pedro Henrique Magalhaes Craveiro de Melo ◽  
Celso Kiyochi Takimura ◽  
Carlos Augusto Homem de Magalhães Campos ◽  
Pedro Eduardo Horta ◽  
...  
Keyword(s):  
Transradial Approach
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