Incidence of Femoral Vein Occlusion After Catheter Ablation in Children: Evaluation with Magnetic Resonance Angiography |
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Authors: | DE Miga LF McKellar S Denslow HB Wiles CL Case PC Gillette |
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Institution: | (1) South Carolina Children's Heart Center, Medical University of South Carolina, 171 Ashley Avenue, Charleston, SC 29425, USA, US |
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Abstract: | Catheter ablation in children requires placement of multiple large femoral venous sheaths and catheters. Magnetic resonance
angiography (MRA) was used to evaluate the effect of indwelling lines on femoral venous blood flow. Between October 1993 and
February 1994 a total of 17 patients scheduled for catheter ablation underwent venous MRA. Two-dimensional time-of-flight
MRA was performed 12–70 hours after catheterization on all patients. All patients received intravenous heparin during the
procedure and had aspirin therapy instituted after ablation. Eighteen catheter ablations and MRA studies were performed on
the 17 patients (one patient underwent repeat ablation). There were 7 females and 10 males, with a mean age of 14.8 ± 4.2
years (range 8–21 years). Patients had three venous sheaths inserted in the left femoral vein (5F, 6F, and 7F with external
diameters measuring 1.7, 2.0, and 2.3 mm, respectively) and one sheath in the right femoral vein (7F). Four patients (22%)
had altered venous flow (two complete obstructions and two partial obstructions) following catheterization. None of these
patients experienced symptoms or complications. It was concluded that there is an increased incidence (22%) of venous obstruction
following catheter ablation, but there are no related complications. Venous MRA provides a rapid, noninvasive method for evaluating
venous flow abnormalities and possibly detects patients at risk for complications. |
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Keywords: | : Venous occlusion — Thrombosis — Ablation — Children |
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