Cardiovascular and interventional radiology
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Cardiovasc Intervent Radiol · Mar 2007
Distal embolization after stenting of the vertebral artery: diffusion-weighted magnetic resonance imaging findings.
We retrospectively evaluated our experience with stenting of the vertebral artery in an effort to determine the risk of distal embolization associated with the procedure. ⋯ Stenting of stenoses of the vertebral artery origin may be associated with a significant risk of asymptomatic distal embolization. Angiography, placement of the guiding catheter, inflation of the stent balloon, and crossing the lesion with guidewires or balloon catheters may potentially cause distal embolization. Further studies to evaluate measures to increase the safety of vertebral artery stenting, such as the use of distal protection devices or short-term postprocedural anticoagulation, should be considered for patients with clear indications for this procedure.
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Cardiovasc Intervent Radiol · Mar 2007
Case ReportsSuperficial temporal artery pseudoaneurysm: a conservative approach in a critically ill patient.
A 71-year-old man affected by cardio- and cerebrovascular disease experienced an accidental fall and trauma to the fronto-temporal area of the head. A few weeks later a growing mass appeared on his scalp. ⋯ His clinical condition favoured a conservative approach by ultrasound-guided compression and subsequent surgical resection. A conservative approach should be considered the treatment of choice in critically ill patients affected by superficial temporal artery pseudoaneurysm.
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Cardiovasc Intervent Radiol · Mar 2007
Evaluation of retrievability of the Gunther tulip vena cava filter.
To evaluate the feasibility and safety of withdrawal of a Gunther tulip retrievable vena cava filter (GTF). ⋯ GTFs can be retrieved in the majority of cases. Even when encountering situations in which the filter could not be removed using the standard method, withdrawal was possible in a high frequency of cases through various trials using modified methods.
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Cardiovasc Intervent Radiol · Jan 2007
Influence of NaCl concentrations on coagulation, temperature, and electrical conductivity using a perfusion radiofrequency ablation system: an ex vivo experimental study.
To determine, by means of an ex vivo study, the effect of different NaCl concentrations on the extent of coagulation obtained during radiofrequency (RF) ablation performed using a digitally controlled perfusion device. ⋯ In an ex vivo model, continuous perfusion with high NaCl concentrations does not significantly improve the volume of thermal-induced coagulation. This may be because the use of a low-power generator cannot sufficiently exploit the potential advantage of better tissue conductivity provided by NaCl perfusion.
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Cardiovasc Intervent Radiol · Jan 2007
Gunther Tulip retrievable inferior vena caval filters: indications, efficacy, retrieval, and complications.
We evaluated the Gunther Tulip (GT) retrievable inferior vena cava (IVC) filter with regard to indications, filtration efficacy, complications, retrieval window, and use of anticoagulation. ⋯ The Gunther Tulip retrievable filter can be used as a permanent or a retrievable filter. It is safe and efficacious. GT filters can be safely retrieved at a mean time interval of 33.6 days. The newly developed Celect filter may extend the retrieval interval.