Cardiovascular and interventional radiology
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Cardiovasc Intervent Radiol · Feb 2010
Case ReportsSystemic hypertension and transient ischemic attack in a 6-year-old girl with fibromuscular dysplasia treated with percutaneous angioplasty.
We describe a 6-year-old girl with arterial hypertension secondary to fibromuscular dysplasia with stenoses of both renal arteries and transient ischemic attack due to extracranial right internal carotid artery subtotal occlusion as well as left internal carotid artery stenosis. She was treated with percutaneous angioplasty of both renal and both carotid arteries.
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Cardiovasc Intervent Radiol · Nov 2009
Comparative StudyRadiofrequency ablation zones in ex vivo bovine and in vivo porcine livers: comparison of the use of internally cooled electrodes and internally cooled wet electrodes.
This experimental study was undertaken to compare radiofrequency (RF) ablation zones created by internally cooled (IC) and internally cooled wet (ICW) electrodes. IC and ICW electrodes with a 2-cm exposed active tip were used to induce 30 ablation zones in 10 explanted bovine livers with a 12-min ablation time, respectively. In addition, two kinds of electrodes produced 16 ablation zones in five living porcine livers, respectively. ⋯ In living porcine livers using IC and ICW electrodes, the corresponding values were 2.62 cm, 2.00 cm, 5.76 cm3, 15%, 3.84 cm, 2.89 cm, 18.50 cm3, and 25%, respectively. In both ex vivo and in vivo livers, long-axis diameters, short-axis diameters, volumes, and variable coefficients for the use of ICW electrodes were significantly greater than for the use of IC electrodes (each p<0.05). ICW electrodes produced significantly larger ablation zones than IC electrodes in both ex vivo and in vivo livers, but the ablation zones induced by IC electrodes were more reproducible.
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Cardiovasc Intervent Radiol · Nov 2009
Case ReportsTreatment of bilateral hand frostbite using transcatheter arterial thrombolysis after papaverine infusion.
Standard therapy for frostbite has been unaltered for more than 20 years. Recently there have been reports of improved outcomes with the addition of a vasodilator to intra-arterial thrombolytic therapy. ⋯ Intra-arterial catheters were placed in the brachial arteries and a papaverine infusion was initiated, followed by intra-arterial tPA thrombolysis. Follow-up examination at 4 months revealed full hand function and complete resolution of symptoms.
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Cardiovasc Intervent Radiol · Nov 2009
Embolization of renal angiomyolipomas: short-term and long-term outcomes, complications, and tumor shrinkage.
This study retrospectively evaluated outcomes, complications, and tumor shrinkage in renal angiomyolipomas after transcatheter arterial embolization (TAE). All renal angiomyolipoma patients who underwent TAE between August 2000 and December 2008 and had short-term (
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Cardiovasc Intervent Radiol · Sep 2009
Improving results of elective abdominal aortic aneurysm repair at a low-volume hospital by risk-adjusted selection of treatment in the endovascular era.
Several studies have observed both higher mortality rates and lower utilization of endovascular aneurysm repair (EVAR) at low-volume centers. This article presents the results of elective abdominal aortic aneurysm (AAA) repair at a low-volume center in the endovascular era and investigates whether postprocedural mortality can be improved by extension of EVAR application also in this setting. This is an 11.6-year retrospective cohort study of 132 patients undergoing elective surgical or endovascular AAA repair at a tertiary care academic hospital between 1997 and July 2008, i.e., a median volume of 12 cases per year. ⋯ EVAR mortality was 0%, mortality after open repair was reduced from 8.5% to 3.7% (p = 0.414). In conclusion, by risk-adjusted selection of treatment and frequent application of EVAR, it is possible to improve perioperative outcome of elective AAA repair at a low-volume hospital. Mortality figures are similar to those of recent trials at high-volume centers, as reported in the literature.