Clinical significance of cerebrovascular gas emboli during polidocanol endovenous ultra-low nitrogen microfoam ablation and correlation with magnetic resonance imaging in patients with right-to-left shunt
| Autor: | Janet E. Rush, Kathleen Gibson, John D. Regan, Stanley A. Hirsch, Cynthia K. Shortell, David Wright |
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| Rok vydání: | 2011 |
| Předmět: |
Adult
Male Middle Cerebral Artery medicine.medical_specialty Adolescent Ultrasonography Doppler Transcranial Right-to-left shunt medicine.medical_treatment Myocardial Infarction Polidocanol Polyethylene Glycols Varicose Veins Young Adult medicine.artery Sclerotherapy Varicose veins medicine Embolism Air Humans Saphenous Vein cardiovascular diseases Ultrasonography Interventional Ultrasonography Doppler Duplex Intracranial Embolism business.industry Cerebral infarction Endovascular Procedures Cerebral Infarction Middle Aged medicine.disease Magnetic Resonance Imaging Sclerosing Solutions Transcranial Doppler Middle cerebral artery cardiovascular system Female Surgery Radiology medicine.symptom Cardiology and Cardiovascular Medicine business medicine.drug |
| Zdroj: | Journal of Vascular Surgery. 53:131-137 |
| ISSN: | 0741-5214 |
| DOI: | 10.1016/j.jvs.2010.06.179 |
| Popis: | Background Foam generated by manual agitation of liquid sclerosant with air or gas is routinely utilized to treat refluxing veins. Although generally well tolerated, serious neurological events have been reported. The composition and properties of the foam, including bubble size and gaseous components, may contribute to the potential for microcirculatory obstruction and cerebral ischemia. We tested an ultra-low nitrogen polidocanol endovenous microfoam with controlled bubble size and density and hypothesized that patients at risk due to the presence of middle cerebral artery (MCA) bubble emboli during microfoam injection would not demonstrate evidence of clinical or subclinical cerebral infarction. Methods Patients with great saphenous vein incompetence were treated with ultra-low nitrogen (≤0.8%) polidocanol endovenous microfoam injected under ultrasound guidance. Patients with right-to-left shunt were included to evaluate the safety of cerebral arterial bubbles. All patients with MCA emboli detected by transcranial Doppler during endovenous microfoam ablation received intensive surveillance for microinfarction, including brain magnetic resonance imaging and measurement of cardiac troponin-I. Results MCA bubble emboli were detected in 60 of 82 treated patients; 22 patients had no detectable emboli. Among patients with MCA bubbles detected, 49 (82%) had ≤15 bubbles. No patients developed magnetic resonance imaging abnormalities, neurological signs, or elevated cardiac troponin. Conclusions Patients treated with foamed liquid sclerosants are commonly exposed to cerebrovascular gas bubbles. In this series of 60 high-risk patients with MCA bubble emboli during or after treatment with ultra-low nitrogen polidocanol endovenous microfoam, there was no evidence of cerebral or cardiac microinfarction. The results of this study cannot be generalized to foams compounded using bedside methodologies, since the composition of these foams is substantially different. |
| Databáze: | OpenAIRE |
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