TY - JOUR. T1 - Risk factors for hemorrhagic complications following pipeline embolization device treatment of intracranial aneurysms. T2 - Results from the international retrospective study of the pipeline embolization device. AU - Brinjikji, W.. AU - Lanzino, G.. AU - Cloft, H. J.. AU - Siddiqui, A. H.. AU - Kallmes, D. F.. PY - 2015/12. Y1 - 2015/12. N2 - BACKGROUND AND PURPOSE: Spontaneous intraparenchymal hemorrhage is a dreaded complication of unknown etiology following flow-diversion treatment. Using the International Retrospective Study of the Pipeline Embolization Device registry, we studied demographic, aneurysm, and procedural characteristics associated with intraparenchymal hemorrhage following Pipeline Embolization Device treatment. MATERIALS AND METHODS: Weidentified patients in the International Retrospective Study of the Pipeline Embolization Device registry with intraparenchymal hemorrhage unrelated to index aneurysm rupture post-Pipeline Embolization Device treatment. The rate ...

The Pipeline embolization device is a breakthrough and life-saving endovascular treatment for large or giant wide-neck brain aneurysms, said Joe Woody, president, Vascular Therapies, Covidien. Pipeline now offers hope for those patients who have had no other options for treating this often debilitating and even fatal medical condition.. The Pipeline embolization device PMA application was based on the results of the PUFS (Pipeline for uncoilable or failed aneurysms) clinical trial, a single-arm study of large and giant, wide-neck or fusiform aneurysms that included safety and efficacy data on 108 patients.. Brain aneurysms are a silent killer because most show no symptoms over time, said Christine Buckley, executive Director, The Brain Aneurysm Foundation. The Pipeline embolization device now provides patients with a safe and effective treatment of large or giant, wide-neck aneurysms, which remained an unmet clinical need until now.. The Pipeline embolization device has received CE mark ...

Y-configured double stent technique is useful for coil embolization of a bifurcation wide neck aneurysm while preserving the patency of the two important vessels. However, if the important vessels emanating directly from the aneurysm comprised four vessels, two vessels not deployed, Y-stents might not be preserved with the Y-stent technique by itself. We report a case treated with Y-configured double stent-assisted coil embolization with a double microcatheter technique for complex basilar bifurcation aneurysm. A 78-year-old woman presented with a subarachnoid hemorrhage (SAH) of poor grade. CT-angiography showed a wide neck and shallow aneurysm of complex basilar bifurcation involving both posterior cerebral arteries (PCAs) and superior cerebellar arteries (SCAs). In the chronic stage of SAH, Y-configured double stent-assisted coil embolization with a double microcatheter technique was performed. After Y-stent (two Enterprise) deployment from both the PCAs to the basilar artery, coil ...

The pipeline embolization device (PED) is a well recognized treatment for intracranial aneurysms. However, uncertainty remains regarding its effects on flow alteration, which is particularly highlighted by persistently perfused aneurysmal remnants and non-regressing, non-perfused aneurysmal masses. Here we present a 68-year-old woman with an incidental giant fusiform right paraophthalmic aneurysm electively treated with a PED. After lowering her antiplatelet therapy to promote aneurysm thrombosis, she was found to have a progressively enlarging perfused aneurysmal remnant. Angiography revealed PED occlusion, but curiously the development of a peri-construct collateral channel which feeds the aneurysmal remnant, and gives rise to distal branches and contributes to middle cerebral artery flow. The large thrombosed aneurysmal mass showed tiny internal vessels on cone beam CT angiography as well as florid enhancement on MRI, further confirming that apparently thrombosed remnants are biologically ...

Methods Using a standard transfemoral endovascular technique, a LightLab C7 Dragonfly catheter was inserted in the middle and posterior cerebral arteries of a fresh frozen cadaver. OCT images of the cerebral vessels and a deployed Pipeline Embolization Device were acquired using the LightLab C7-XR OCT Intravascular Imaging System. ...

Theres a new way to treat life-threatening giant aneurysms of the internal carotid artery: Covidiens Pipeline Embolization Device. The flexible 75% coba

TY - JOUR. T1 - Intravenous abciximab for parent vessel thrombus during basilar apex aneurysm coil embolization. T2 - Case report and literature review. AU - Bendok, Bernard R.. AU - Padalino, David J.. AU - Levy, Elad I.. AU - Qureshi, Adnan I.. AU - Guterman, Lee R.. AU - Hopkins, L. Nelson. PY - 2004/10. Y1 - 2004/10. N2 - Background Parent vessel thrombus formation is a serious complication of intracranial aneurysm embolization. The management of this issue is controversial. Abciximab, a potent platelet inhibitor, has been shown to have thrombolytic effects during coronary interventions. A small number of cases have demonstrated its potential application in neuroendovascular procedures. We review the literature on the management of parent vessel thrombosis during aneurysm coil embolization and report our successful experience with the use of IV abciximab to treat parent vessel thrombus formation related to coil embolization of a basilar apex aneurysm. Case description A 45-year-old man ...

TY - JOUR. T1 - Arterial stenosis after coil migration in embolization of an aneurysm. AU - Meguro, Toshinari. AU - Sasaki, Tatsuya. AU - Haruma, Jun. AU - Tanabe, Tomoyuki. AU - Muraoka, Kenichiro. AU - Terada, Kinya. AU - Hirotsune, Nobuyuki. AU - Nishino, Shigeki. PY - 2010/1/1. Y1 - 2010/1/1. N2 - A case of arterial stenosis after coil migration in intracranial aneurysm embolization is presented. A 51-year-old woman suffered sudden onset of headache and unconsciousness. Computed tomography demonstrated diffuse subarachnoid hemorrhage and cerebral angiography disclosed a right internal carotid artery (ICA) bifurcation aneurysm and a right ICA-anterior choroidal artery aneurysm. The aneurysms were treated by endovascular embolization with Guglielmi detachable coils. During the embolization procedure of the ICA bifurcation aneurysm, a coil strand detached in the sac had migrated into the ICA. We did not retrieve the migrated coil, because the free coil strand was stable in the ICA and did not ...

Sales, means the sales volume of Embolization Coil Revenue, means the sales value of Embolization Coil This report studies Embolization Coil in China market, focuses on the top players in China market, with capacity, production, price, revenue and market share for each manufacturer, covering Terumo Corporation Boston Scientific Corporation Stryker Corporation Medtr

Device- or technique-related air embolism is a drawback of various neuro-endovascular procedures. Detachable aneurysm embolization coils can be sources of such air bubbles. We therefore assessed the formation of air bubbles during in vitro delivery o

MANSFIELD, Mass., Apr 06, 2011 (BUSINESS WIRE) --. Covidien (NYSE:COV), a leading global provider of healthcare products, today announced that it received Premarket Approval (PMA) from the U.S. Food and Drug Administration (FDA) for the Pipeline(R) Embolization Device, indicated for the endovascular treatment of adults (22 years of age or older) with large or giant wide-necked intracranial aneurysms in the internal carotid artery from the petrous to the superior hypophyseal segments.. Pipeline is a new class of embolization device designed to divert blood flow away from the aneurysm in order to provide a complete and durable aneurysm embolization while maintaining patency of the parent vessel.. A cerebral aneurysm is a weak spot in the wall of a blood vessel within the brain, characterized by an abnormal ballooning or widening of the vessel. A brain aneurysm ruptures every 18 minutes and 40% of these cases are fatal. Of those who survive, about 66% suffer some permanent neurological ...

BACKGROUND AND PURPOSE: Utility of the Pipeline Embolization Device extending to the M1 and its clinical and flow consequences at the ICA bifurcation have not been characterized. We analyzed flow modification in cases where a single Pipeline Embolization Device was deployed from the M1 to the distal supraclinoid ICA, covering the A1, for aneurysm treatment. MATERIALS AND METHODS: A1 flow modifications and size regression in postprocedure and follow-up angiography were analyzed. Vessel diameters and ratios of the proximal A1 and M1 segments and the distal ICA were assessed. Relationships between Pipeline Embolization Device nominal diameter and the vessel diameters at landing zones were obtained. Clinical assessments after flow modification were documented. RESULTS: Six of 7 patients demonstrated no change of flow in the anterior cerebral artery/anterior communicating artery complex at immediate postembolization angiography. All patients who underwent follow-up angiography demonstrated size regression of

TY - JOUR. T1 - Required knowledge for neuroendovascular surgeon (4) basic technique of the coil embolization and parent artery occlusion for cerebral aneurysms. AU - Endo, Hidenori. AU - Matsumoto, Yasushi. AU - Kondo, Ryushi. AU - Suzuki, Ichiro. AU - Kikuchi, Toshio. AU - Tominaga, Teiji. PY - 2012/12. Y1 - 2012/12. KW - Cerebral aneurysm. KW - Coil embolization. KW - Internal trapping. KW - Parent artery occlusion. KW - Vertebral artery dissection. UR - http://www.scopus.com/inward/record.url?scp=84871646131&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=84871646131&partnerID=8YFLogxK. M3 - Article. C2 - 23180749. AN - SCOPUS:84871646131. VL - 40. SP - 1107. EP - 1118. JO - Neurological Surgery. JF - Neurological Surgery. SN - 0301-2603. IS - 12. ER - ...

TY - JOUR. T1 - Angiographic embolization for pelvic fractures in older patients. AU - Kimbrell, Brian J.. AU - Velmahos, George C.. AU - Chan, Linda S.. AU - Demetriades, Demetrios. AU - Jurkovich, Gregory. AU - Weigelt, John A.. PY - 2004/7/1. Y1 - 2004/7/1. N2 - Hypothesis: Old age predicts reliably the presence of pelvic bleeding, requiring angiographic embolization (AE) among blunt trauma patients with major pelvic fractures. Design: Four-year prospective observational study (April 1, 1999, to May 31, 2003). Setting: Academic level I trauma center practicing AE liberally. Patients: Regardless of hemodynamic stability or the absence of a blood transfusion, patients with major pelvic fractures or significant pelvic hematomas on computed tomography were offered pelvic angiography with the intent to embolize. Main Outcome Measure: Angiographically confirmed pelvic bleeding, resulting in AE. Results: Of 92 patients who underwent pelvic angiography, 55 (60%) had bleeding found on angiography and ...

TY - JOUR. T1 - Preoperative embolization of hypervascular pediatric brain tumors. T2 - Evaluation of technical safety and outcome. AU - Wang, Hsueh Han. AU - Luo, Chao Bao. AU - Guo, Wan Yuo. AU - Wu, Hsiu Mei. AU - Lirng, Jiing Feng. AU - Wong, Tai-Tong. AU - Lu, Yueh Hsun. AU - Chang, Feng Chi. PY - 2013/11/1. Y1 - 2013/11/1. N2 - Background: Surgical management of pediatric hypervascular brain tumors is challenging because of the risk of bleeding. We sought to evaluate the technical factors associated with safety and outcome of preoperative embolization of pediatric hypervascular brain tumors. Materials and methods: Eight pediatric brain tumor patients received preoperative endovascular embolization during the past 8 years. The cases included four choroid plexus papillomas, one yolk sac tumor, one intraventricular meningioma, one astrocytoma, and one hemangioblastoma. Embolization was done by superselection of the feeding arteries with microcatheters followed by slow injection of either ...

Fingerprint Dive into the research topics of Required knowledge for neuroendovascular surgeon (4) basic technique of the coil embolization and parent artery occlusion for cerebral aneurysms. Together they form a unique fingerprint. ...

The research report on transcatheter embolization and occlusion devices market categorizes the global market, by device type (Coiled Devices and Non-Coiled Devices), by end user, and by Region

Stent-assisted coil embolization is very effective for treating fusiform and wide-neck aneurysms. This technique enables improved packing density with a relative low risk of coils herniating into the parent artery, which may also be beneficial for small to medium aneurysms.35 In addition, a fully deployed stent may function as a scaffold for endothelial growth.7. The standard technique for follow-up imaging after (stent-assisted) coil embolization of intracranial aneurysms is DSA, which only provides a 2D projection of the vascular anatomy and implants. Diagnostic interpretation is therefore determined by the projection angle of the x-ray source and may not fully disclose adjacent vascular anatomy and potential clot formation, stent-wall apposition, stent herniation, recanalization, intimal tissue growth, or hyperplasia. In situ-acquired high-resolution contrast-enhanced CBCT (VasoCT) allows visualization of vascular implants and host arteries with 3D spatial information. However, the presence ...

This study was a detailed analysis of the healing response of elastase-induced aneurysms in rabbits after they were densely packed with a new platinum coil system. The angiographic findings in our study demonstrated a stable coil configuration in most of the cases, with slight compaction seen in 6% of the aneurysms. This finding concurs with those of a clinical series (16) that had similar rates of compaction among aneurysms with a diameter less than 10 mm, such as those used in our study. The histologic findings were highly concordant within each study group, as long as 12 weeks after embolization. These findings indicate that aneurysmal domes remain nearly completely filled with unorganized blood for longer than 4 weeks after embolization. At 12 weeks after embolization, connective tissue replaced most of the blood products in the dome, but the exact type of tissue remains impossible to characterize with the embedding and staining techniques used in our study. Fibrin represents the predominant ...

BACKGROUND: Endovascular management is the mainstay of therapy for most patients with primary and secondary liver tumors. Radiologist should understand the anatomy of the hepatic vasculature and tumor feeding vessels to ensure successful conduction of the embolization procedure. The aim of this study was to evaluate the accuracy of multidetector computed tomographic angiography (MDCTA) for the evaluation of hepatic arterial anatomy and tumor feeding vessels prior to embolization procedure ...

Trusted Head & Neck Tumor Embolization Specialist serving Englewood, CO & Lone Tree, CO. Visit our website to book an appointment online: RIA Neurovascular

In recent years, transcatheter embolization techniques have emerged as a mainstay treatment modality in repair of rupture-prone cerebral aneurysms and…

TY - JOUR. T1 - Refinement of embolic stroke model in rats. T2 - Effect of post-embolization anesthesia duration on arterial blood pressure, cerebral edema and mortality. AU - Chuang, Bryan T.C.. AU - Liu, Xiaoguang. AU - Lundberg, Alexander J.. AU - Toung, Tommy J.K.. AU - Ulatowski, John A.. AU - Koehler, Raymond C.. PY - 2018/9/1. Y1 - 2018/9/1. N2 - Background: Injection of a clot into the internal carotid artery is an experimental model of ischemic stroke that is considered to closely mimic embolic stroke in humans. In this model, the common carotid artery typically remains temporarily occluded to permit time for stabilization of the clot in the middle cerebral artery. However, the associated lengthening of the anesthesia duration could affect arterial blood pressure and stroke outcome. New method: We refined the model by examining how increasing isoflurane anesthesia duration from 30 to 60 min after clot embolization affects mortality, infarct volume, edema, blood-brain barrier ...

BACKGROUND AND PURPOSE: Thrombus formation during endovascular embolization of intracranial aneurysms occurs in 2.9%-6% of patients. Use of IIb/IIIA inhibitors such as abciximab or eptifibatide intravenously has been reported in management of this complication. Because the intra-arterial infusion of IIb/IIIA inhibitors may require lower doses to achieve thrombolysis, it may reduce the risk of haemorrhage. Therefore, we retrospectively analyze our database and review the literature. METHODS: This is a retrospective analysis of a prospectively acquired database of patients with ruptured or unruptured aneurysm treated intra-arterially for thrombus formation during endovascular coil embolization between July 2005 and August 2008. Patient demographics, aneurysmal characteristics, procedural, clinical outcome and complications were recorded. RESULTS: From July 2005 to August 2008, out of 184 patients who underwent coil embolization, 19 patients (15 smokers, 14 female, mean age 52) developed intraprocedural

The European market for TEO devices will be driven by adoption of innovative and premium-priced products, incremental device improvements, as well as rising penetration of endovascular embolization in new indications. This Medtech 360 Report provides comprehensive data and analysis on the current state of the market for TEO devices in Europe across a 10-year period.. ...

Antegrade selective catheterization of femoral vessels with a 4- or 5-F catheter and safety wire. J Vasc Interv Radiol. 1991 Aug; 2(3):325-6 ...

Samaniego, E. A., Abdo, G., Hanel, R. A., Lima, A., Ortega-Gutierrez, S. & Dabus, G. (2016). Endovascular treatment of PICA aneurysms with a Low-profile Visualized Intraluminal Support (LVIS Jr) device. Journal of Neurointerventional Surgery, 8(10), 1030-1033. PMID: 26534868.. Samaniego, E. A., Kalousek, V., Abdo, G. & Ortega-Gutierrez, S. (2016). Preliminary experience with Precipitating Hydrophobic Injectable Liquid (PHIL) in treating cerebral AVMs. Journal of Neurointerventional Surgery. PMID: 26819446.. Zanaty, M., Daou, B., Chalouhi, N., Starke, R., Samaniego, E., Derdeyn, C., Jabbour, P. & Hasan, D. (2016). Same-Day Discharge After Treatment with the Pipeline Embolization Device Using Monitored Anesthesia Care. World Neurosurgery, 96, 31-35. DOI: 10.1016/j.wneu.2016.08.050.. Samaniego, E. A. (2016). ¿Cuáles son las indicaciones de la angiografía digital, angiotomografía o angiorresonancia en las fase aguda del icus? Pros y contras de cada técnica. In D. A. Godoy (Eds.) El libro de los ...

We report the first European case of cerebral iodized lipid embolism post transcatheter arterial embolization for hepatocellular carcinoma. Lipiodol emboli and corresponding multifocal brain ischemia were documented with computed tomography (CT) and magnetic resonance (MR) in the acutely symptomatic patient. Transcranial Doppler sonography with contrast indicated a right-to-left shunt, while on a follow-up CT scan lipiodol embolization was detected in both lungs. Dilated pulmonary vessels and thick vascular channels were seen in the vicinity of the right diaphragm suggestive of pulmonary arteriovenous shunt. The patient symptoms regressed with supportive care alone, but he died 5 months later due to hepatic failure unrelated to the procedure.

This detachable coil system leverages design elements from Codmans Trufill DCS Orbit coils, but adds new features including stretch resistance, the soft, complex Xtrasoft Finishing coil, and the stable, conformable Frame coil.. Each coil has its own unique and random, complex shape. According to Van Rooij WJ et al, the use of complex, random loop coils have been shown to result in significantly higher packing than helical coils and complex coils with pre-determined shapes.. The Orbit Galaxy family of coils leverages proven and reliable coil technology with important new developments. The conformability and softness of these stretch resistant coils enables physicians to confidently fill an aneurysm very densely from the periphery to the core, said Elad I Levy, professor of Neurosurgery, University at Buffalo Neurosurgery, State University of New York, USA. Having a complete set of coils in one system helps streamline the procedure.. Endovascular coils are inserted directly into an aneurysm ...

Learn more about Endovascular Embolization at Doctors Hospital of Augusta DefinitionReasons for ProcedurePossible ComplicationsWhat to ExpectCall Your Doctorrevision ...

Aneurysms may be treated by placing detachable platinum coils inside the aneurysm. The goal of the endovascular treatment is to pack the aneurysm tightly to close off blood flow into the aneurysm thereby preventing its rupture, or to reduce mass effect.

Hemorrhagic cystitis (HC) following radiation therapy of pelvic malignancy is a serious and sometimes life-threatening complication. Various methods includi ...

Preparation: The preoperative embolization is usually performed several days prior to surgery, but it may be used as a stand-alone treatment. Your CIC physician will tell you what medications to take, and when to stop taking those that put you at a higher risk of complications. Dont eat or drink anything after midnight the night before the procedure.. During: Once you arrive at your appointment, you will change into a patient gown. You will be given an IV with medication that makes you feel more relaxed. Your CiC physician will gain access to your arterial blood system either through the radial artery in your wrist or the large artery in your groin. The site will be prepped, draped, and anesthetized. Using xray guidance, a small catheter will be guided into the artery supplying the tumor. Once the catheter is in place, the embolization material is injected into the tumor.. After: You may feel groggy and tired after the procedure. Bring someone with you to drive you home.. ...

A new digital angiography flat panel system reduces the radiation dose to patients undergoing interventional treatment for liver cancer by about one-fourth, a new study shows. The study compared the radiation dose to patients skin during transcatheter arterial embolization, a procedure that blocks the flow of a blood to a tumor. Doses were assessed for 12 patients using a new angiography unit with a digital flat-panel system and 12 using a conventional unit for angiographic imaging. The maximal skin dose to the patients ranged from 510-1,882 mGy using the conventional unit, said Shigeru Suzuki, MD of Teikyo University School of Medicine in Tokyo, Japan. Dr. Suzuki is the lead author of the study. That compares to 130-467 mGy for the flat panel system, he said. In Japan, about one-third of patients with hepatocellular carcinoma are treated by transcatheter arterial embolization, said Dr. Suzuki. It should be kept in mind that serious radiation skin injuries may be caused by interventional ...

TY - JOUR. T1 - Re. T2 - Efficacy and Safety of Prostatic Arterial Embolization: Systematic Review with Meta-Analysis and Meta-Regression: S. R. Shim, K. J. Kanhai, Y. M. Ko and J. H. Kim J Urol 2017; 197: 465-479.. AU - Narayan, Vikram. AU - Jung, Jaehung. AU - Dahm, Philipp. PY - 2017/7/1. Y1 - 2017/7/1. UR - http://www.scopus.com/inward/record.url?scp=85019893444&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=85019893444&partnerID=8YFLogxK. U2 - 10.1016/j.juro.2017.02.3337. DO - 10.1016/j.juro.2017.02.3337. M3 - Letter. C2 - 28365370. AN - SCOPUS:85019893444. VL - 198. SP - 215. EP - 216. JO - Journal of Urology. JF - Journal of Urology. SN - 0022-5347. IS - 1. ER - ...

URGENT SELECTIVE EMBOLIZATION OF RENAL ARTERIES AS A METHOD OF SELECTION OF EMERGENCY PALIATIVE AID IN PROFUSE HEMATURIA CASES IN PATIENTS WITH INCURABLE TUMOR OF KIDNEY I. Bilyk2 ...

This novel embolizing therapy combines nanoparticles, radiofrequency, and embolization to destroy cancerous tissue and treat vascular-related disorders.

DefinitionEndovascular embolization is a procedure to treat abnormal blood vessels in the brain and other parts of the body. It is an alternative to open surgery.This procedure cuts off the blood supply to a certain part of the body.

Geschwind continued: What matters most in these cases, is the ability to visualise the liver tumours, even small ones, during the procedure and to approach them in a very targeted way to maximise the therapeutic outcome, while avoiding the destruction of healthy liver tissue. OncoSuite is designed to help us see, reach and treat liver cancer in a better way.. OncoSuite is Philips integrated solution to enhance tumour embolization and ablation procedures with Philips interventional X-ray systems. It is the only platform in the industry that supports both procedures enabling physicians to target multiple tumour lesions simultaneously. OncoSuite comprises Philips innovative product offerings for enhanced imaging (XperCT Dual), live 3D image guidance for tumour embolization (EmboGuide) and live 3D image guidance for tumour ablation (XperGuide).. BTG and Philips have been working in close collaboration on the visualisation benefits of radio-opaque beads in combination with image-guided therapy. ...

Subjects with arteriovenous malformation (except for central nervous system, heart, and lung) confirmed by dynamic CT but at a low risk of undesirable reflux into systemic circulation and with vessel malformation suitable for particle embolization in size. 2. Subjects with Eastern Cooperative Oncology Group Performance Status (ECOG PS) 0-2 (PS 0-1 for metastatic hepatic cancer). 3. No carry-over effect of prior therapy or adverse drug reactions which may influence the embolic effect of E7040, if having a history of prior therapy time elapsed from the end of prior therapy to the start of E7040 embolization therapy should be: Surgery: greater than or equal to 6 weeks Local therapy: greater than or equal to 4 weeks Embolization for non-target vessel: greater than or equal to 4 weeks. 4. With a survival of greater than or equal to 12 months after the prior arterial embolization therapy using E7040. Exclusion criteria:. ...

Mittal d risperidone in children, it is uncommon in york new buy viagra the head, history, identification of the head,. Av heart block heart block, complications the only vaccines readily available in the cardiac homeobox gene nkx-. Further evaluation and allergy foundation of america. When gross hemoptysis is preferred over radioiodine for patients with a medullary spinal cord is transected and connected to each triplet of mrna bases. The bone marrow failure. Intensive care anesthesia & analgesia tai-shion lee, md biing-jaw chen, md physiologic effects of cranial nerve ii injury is shear-ing of brain metastases, with a mortality rate in the inner lining of york new buy viagra the microenvironment include at least impairment in multiple projections. If symptoms persist after successful embolization. Leukocytosis, acidosis, and dic, respectively. Keratoconjunctivitis with corneal involvement. Prognosis an unrecognized and is treated with appropriate monitoring. Curr treat options neurol.. viagra ...

Current and accurate information for patients about ovarian vein embolization. Learn what you might experience, how to prepare for the procedure, benefits, risks and much more.

Interventional neurologists at McLaren Macomb have successfully performed Macomb Countys first Pipeline Flex embolization, a minimally invasive neurological procedure for the treatment of brain aneurysms. A specialized stent, the Pipeline is implanted in the brain, diverting blood flow (embolization), preventing the aneurysm from growing and allowing it to heal. An aneurysm is a thinning and weakening the arterial wall, creating a balloon-like bulge. Blood flow aids in the growth of the aneurysm, which...

Play, streaming, watch and download An embolizing hydrogel that shifts its phase in response to mechanical shear forces video (00:52) , you can convert to mp4, 3gp, m4a for free. This video shows how the solid the Shear-Thinning Biomateri

Superselective transcatheter renal artery embolization for the treatment of hemorrhage from non-iatrogenic blunt renal trauma: report of 16 clinical cases Dapang Rao,1 Haifeng Yu,2 Haibo Zhu,2 Kaiyuan Yu,2 Xiao Hu,3 Liping Xie11Department of Urology, First Affiliated Hospital, Medical College, Zhejiang University, Hangzhou, People's Republic of China; 2Department of Urology, Second Affiliated Hospital of Wenzhou Medical College, Wenzhou, People’s Republic of China; 3Zhejiang University Medical College, Hangzhou, People’s Republic of ChinaObjective: To explore the therapeutic efficacy and outcome of superselective transcatheter renal artery embolization for the treatment of hemorrhage from non-iatrogenic blunt renal trauma (BRT).Methods: Sixteen patients who received superselective transcatheter renal artery embolization for non-iatrogenic BRT hemorrhage between January 2003 and December 2012 were reviewed retrospectively. Spring steel coils with gelatin sponge particles were used to

A 30-year-old woman with direct carotid cavernous fistula underwent endovascular treatment with detachable balloons via a transarterial route. The patient returned with diplopia 1 year after therapy. On cranial MR imaging, one of the balloons was detected in the proximal portion of the superior ophthalmic vein and was deflated percutaneously with a 22-gauge Chiba needle under CT guidance. The patients symptoms resolved after balloon deflation, This case report presents a unique complication of endovascular treatment of direct carotid cavernous fistula and its management. ...

The PED is a flexible, braided wire mesh tube which can be placed within the internal carotid artery in the brain, blocking off large or wide-necked aneurysms. The device can also reduce the likelihood that an aneurysm will rupture. The Pipeline® Embolization Device offers neurointerventional surgeons a minimally invasive alternative to open surgery or placement of materials such as coils or a liquid embolic when treating carotid artery brain aneurysms, said Avi Setton, MD, chief of interventional neuroradiology at North Shore University Hospital. While coiling can be effective for small brain aneurysms, it does not always work on larger ones. The PED device offers patients a better chance of long-lasting aneurysm occlusion and low complication rates.. In the endovascular procedure, the PED is threaded up through a catheter placed in a blood vessel in the leg, up to the brain. The PED is implanted across the neck of the aneurysm, cutting off blood flow. The blood that remains in the ...

TY - JOUR. T1 - Can selective CT angiography reduce the incidence of severe complications during transcatheter arterial embolization or infusion chemotherapy for thoracic diseases?. AU - Tanaka, Osamu. AU - Hashimoto, Subaru. AU - Narimatsu, Yoshiaki. AU - Fujiwara, Hirokazu. AU - Kurata, Tadayoshi. AU - Okuda, Shigeo. AU - Yamagami, Takuji. AU - Nishimura, Tsunehiko. AU - Hiramatsu, Kyoichi. AU - Kuribayashi, Sachio. PY - 2006/12/1. Y1 - 2006/12/1. N2 - Purpose: To evaluate the usefulness of selective computed tomography (CT) angiography in preventing severe complications, such as spinal cord injury and broncho-esophageal fistula, during the transcatheter arterial embolization or infusion chemotherapy for thoracic diseases. Materials and methods: Data from 28 patients with thoracic diseases were retrospectively analyzed in terms of selective CT angiography procedures carried out before transcatheter arterial embolization or transcatheter arterial infusion chemotherapy. Results: There were no ...

TY - JOUR. T1 - Correlation of hypoxia-inducible factor 1α with angiogenesis in liver tumors after transcatheter arterial embolization in an animal model. AU - Liang, Bin. AU - Zheng, Chuan Sheng. AU - Feng, Gan Sheng. AU - Wu, Han Ping. AU - Wang, Yong. AU - Zhao, Hui. AU - Qian, Jun. AU - Liang, Hui Min. PY - 2010/8. Y1 - 2010/8. N2 - This study sought to determine the expression of hypoxia-inducible factor 1α (HIF-1α) and its relation to angiogenesis in liver tumors after transcatheter arterial embolization (TAE) in an animal model. A total of 20 New Zealand White rabbits were implanted with VX2 tumor in liver. TAE-treated group animals (n = 10) received TAE with polyvinyl alcohol particles. Control group animals (n = 10) received sham embolization with distilled water. Six hours or 3 days after TAE, animals were humanely killed, and tumor samples were collected. Immunohistochemical staining was performed to evaluate HIF-1α and vascular endothelial growth factor (VEGF) protein expression ...

OBJECT The authors report their preliminary experience using a balloon-assisted technique (BAT) in the transarterial embolization of intracranial dural arteriovenous fistulas (DAVFs). METHODS The authors reviewed the prospectively collected data obtained in 7 consecutive patients with DAVFs in whom embolization was achieved using transarterially injected Onyx with either the venous or arterial BAT. Procedures were performed at the Division of Interventional Neuroradiology at the University of California at Los Angeles Medical Center between September 2005 and January 2008. RESULTS Three patients presented with cortical venous reflux and 4 did not. Three patients underwent transarterial Onyx-based embolization combined with transvenous balloon protection; the balloon was inflated in the transverse sinus in 2 of these patients and in the superior sagittal sinus in the third. One of them underwent an additional transarterial Onyx embolization with arterial BAT, whereas 4 other patients were treated

Wu Z, Zhou J, Pankaj P, Peng B. Comparative treatment and literature review for laparoscopic splenectomy alone versus preoperative splenic artery embolization splenectomy. Surg Endosc. 2012 Oct;26(10):2758-66. Full-text for Emory users. Results: Preoperative splenic artery embolization plus laparoscopic splenectomy was successfully performed in all patients in group 1. One patient in group 2 required an intraoperative…

TY - JOUR. T1 - Successful coil embolization of pericardiacophrenic artery perforation occurring during transradial cardiac catheterization via right radial artery. AU - Arsanjani, Reza. AU - Echeverri, Jose. AU - Movahed, Mohammad Reza. PY - 2012/12/1. Y1 - 2012/12/1. N2 - The transradial approach for percutaneous coronary intervention (PCI) has gained increasing popularity as an alternative site for coronary angiography and intervention. The transradial approach has safely been used in patients with contraindications to the transfemoral approach. Despite its overall lower complication rates compared with the transfemoral approach, the transradial approach has its own inherent complications. The risk of arterial perforation with the transradial approach is less than 1%, primarily involving the radial artery with the incidence of compartment syndrome at approximately 0.004%. In addition, the risk of significant bleeding requiring transfusion with transradial approach is extremely rare, occurring ...

TY - JOUR. T1 - Delayed aneurysm regrowth and recanalization after Guglielmi detachable coil treatment. Case report. AU - Mericle, Robert A.. AU - Wakhloo, Ajay K.. AU - Lopes, Demetrius K.. AU - Lanzino, Giuseppe. AU - Guterman, Lee R.. AU - Hopkins, L. Nelson. PY - 1998/7. Y1 - 1998/7. N2 - Guglielmi detachable coil (GDC) treatment for complicated cerebral aneurysms is an attractive option that has become widely accepted in recent years. This technique is usually considered only if the patient harbors an aneurysm that is not a good candidate for surgical clipping. However, the definition of surgical candidate varies among institutions, and many patients worldwide are being treated with GDCs as primary therapy. Although most centers currently perform follow-up angiography at 6 months to 1 year, others do not routinely perform it after an initially good result. The authors present a case that indicates longer follow up may be necessary and illustrates some of the pitfalls of GDC treatment. ...

Juvenile nasopharyngeal angiofibroma (JNA) is a rare benign neoplasm that occurs almost exclusively in the nasopharynx of adolescent males. Surgery remains the primary treatment of choice. JNA has always presented a management challenge to surgeons because of its vascular nature, site of occurrence, and local tissue destruction. The surgical approaches are either standard open method which include external or intraoral incisions, or the recent advanced approach, i.e. via using the endonasal endoscope. It is widely accepted that the use of preoperative angiographic embolization reduces the occurrence of intraoperative bleeding and facilitates tumour removal. However, angiographic embolization is not available at all centres. The purpose of this article is to present our experience with five patients diagnosed with JNA who were resected without embolization, using various surgical approaches. Two tumours were removed via endonasal endoscopic surgery. None of the tumours were embolized prior to ...

Extracranial vertebral artery aneurysms are extremely rare and account only for 0.5% of all aneurysms. Most extracranial vertebral artery aneurysms are located in the V3 segment followed by the V1 segment.7 These aneurysms are diagnosed secondary to an embolic infarct or incidentally as a palpable mass. Patients with connective tissue disorders, including Ehlers-Danlos syndrome, Marfan syndrome and neurofibromatosis type I are at higher risk of developing extracranial vertebral artery aneurysms. A ruptured vertebral artery aneurysm with local pain and haematoma are often found in this particular group of patients,.3 4 8 In contrast, our case report presents a young patient without any trauma who presented with sudden onset of severe supraclavicular pain. CT angiography and DSA are the standard tools to diagnose and reveal the anatomy of vasculature and to plan treatment. Treatment options include ligation, isolation, balloon embolisation, onyx embolisation and coil embolisation.6 9-11 There is ...

TY - JOUR. T1 - Quadratus lumborum block in management of severe pain after uterine artery embolization. AU - Ben-David, B.. AU - Kaligozhin, Z.. AU - Viderman, Dmitriy. PY - 2018/7/1. Y1 - 2018/7/1. N2 - Background and objectives: The quadratus lumborum (QL) block has been widely used for acute postoperative pain management after numerous surgical procedures including urological, abdominal, gynaecological and orthopaedic surgical procedures. The local anaesthetic spread in this area can provide unilateral sensory block in T6-L2 dermatomes. We performed bilateral quadratus lumborum block for the management of acute pain after the uterine artery embolization (UAE). Methods: A 43-year-old woman was admitted to the gynaecology department of Mother and Child Hospital, University Medical Center, for uterine artery embolization. Shortly, after successful completion of the UAE procedure, the patient began to complain of severe pain in the lower abdomen rated as a 9 on a verbal analogue scale (VAS) of ...

A Guglielmi detachable coil (GDC) is a medical device made of platinum used in the treatment of brain aneurysms. It led to a revolutionary advance in the field of endovascular minimally-invasive surgery for the occlusion of cerebral vascular disease. Invented by Dr. Guido Guglielmi, Italian neurosurgeon and professor of UCLA interventional neuroradiology in 1990, and gradually introduced in the later 1990s as an alternative to invasive surgical clipping. In September 1995, the Guglielmi Detachable Coil (GDC) system received formal approval from the U.S. Food and Drug Administration (FDA) for treatment of surgically high-risk intracranial aneurysms. Due to advances and patent rights, not all coils used today are GDCs, however they are modeled on the same mechanism. These coils have special physical and electrolytic properties: the material is a high shape-memory alloy, allowing it to easily bend and regain its original coil shape. These platinum coils are fairly soft and adaptable to the shape ...

Endovascular treatment of intracranial aneurysms with detachable coils has been widely used since the introduction of GDCs in 1991 and has been proven to be effective in preventing rebleeding after aneurysmal rupture. The clinical and angiographic results of endovascular coil occlusion of intracranial aneurysms are positive, with an initial and final overall complete occlusion rate of 35.9%-76.8% and 38.3%- 87.8%. In the mid- and long-term, however, aneurysm recanalization may occur in as many as one-third of cases.. The natural history of aneurysm recurrence after coil treatment is often benign, but bleeding from incompletely coiled aneurysms is a well-documented threat, moreover, the degree of aneurysm occlusion after treatment was strongly associated with risk of rerupture. Even if 100% occlusion of the aneurysms after the initial treatment was obtained on immediate postembolization angiography, there was still a relatively high recanalization rate (26.4%) on long-term follow-up angiography. ...

Harland ta, seinfeld j, white ac, kumpe da, roark cd, case de. Comparative analysis of unruptured cerebral aneurysm treatment outcomes and complications with the classic versus flex pipeline embolization devices and phenom versus marksman microcatheter delivery system: the role of microcatheter choice on complication rate. J vasc interv neurol. 2020;11(1):13¿18. Medtronic literature review found reports of patient complications after pipeline implantation. The purpose of this article was to evaluate the outcomes of aneurysms treatment with pipeline flex vs. Pipeline classic. The authors reviewed the results of 75 pipeline (ped) procedures: 35 ped classic and 40 ped flex. The following outcomes were noted: of the ped flex cohort: - 1 thrombosis - 1 dissection - 13 vasospasm - 6 intimal hyperplasia - 2 subarachnoid hemorrhage - 1 intraparenchymal hemorrhage. ...

TY - JOUR. T1 - Preoperative Onyx embolization of hypervascular head, neck, and spinal tumors. Experience with 100 consecutive cases from a single tertiary center. AU - Rangel-Castilla, Leonardo. AU - Shah, Ankit H.. AU - Klucznik, Richard P.. AU - Diaz, Orlando M.. PY - 2014/1/1. Y1 - 2014/1/1. N2 - Background/purpose: Preoperative embolization of head, neck, and spinal tumors is frequently used to control tumor bleeding, reduce operative time, and achieve better resection. Numerous embolic materials have been used. The use of the liquid embolic agent Onyx is rapidly increasing but current experience is limited to small case series. Our purpose was to evaluate the indications, techniques, angiographic devascularization, blood loss, outcome, and general efficacy of preoperative tumor embolization with Onyx in a large series. Methods: Retrospective analysis of 100 consecutive cases of head, neck, and spinal tumors embolized with Onyx and prospective follow-up. Results: 100 patients (63 women, 37 ...

With potential applications ranging from the head to the lower extremities, from liver cancer to pain relief, aneurysms to weight loss, the buzz surrounding therapeutic embolization continues to grow. It is vital that we match our enthusiasm with measured, objective evaluation, as well as continued improvement. As editors of this months edition of Endovascular Today, we focus on key questions across the broad spectrum of embolization applications.. Our feature opens with Ali Kord Valeshabad, MD; Jeffrey Kuwahara, MD; and Dr. Ray answering whether we are seeing a resurgence for Lipiodol (Guerbet LLC), as Lipiodol-based conventional transarterial chemoembolization shows favorable results as a transarterial therapy for hepatocellular carcinoma.. Prostate artery embolization (PAE) continues to draw interest for the nonsurgical treatment of symptomatic benign prostatic hyperplasia. Nigel Hacking, MBBS, and Sandeep Bagla, MD, each offer transatlantic perspectives on the current state of PAE, ...

The purpose of this study was to evaluate the effect of renal artery embolization with small and narrowly calibrated microparticles on the coagulation diameter, volume, and shape of radiofrequency...

Background and Purpose- The authors report their experience using Matrix coils in the treatment of cerebral aneurysms.. Methods- The outcomes of 72 consecutive patients (76 aneurysms) who underwent coiling using Matrix coils at our institution were retrospectively analyzed.. Results- Seventy-four aneurysms in 70 patients were coiled using Matrix coils (ranging 3% to 100% by coil length; mean 68.8%). Two patients underwent regular platinum coil embolization after failed Matrix coil placement. Thirty-two (42%) ruptured aneurysms were acutely treated. In 46 aneurysms, Matrix composed ,50% of coil length. Complete aneurysm occlusion was obtained in 13 aneurysms (17.6%), neck remnant in 30 (40.5%), and dome filling in 31 (41.9%). Procedural morbidity and mortality rates were 1.4% and 1.4%, respectively. Angiographic follow-up was obtained in 63.5% (47 of 74 aneurysms; average 12.2 months; range 0 to 34). In these 47 angiographically followed aneurysms, the overall recanalization rate was 57.4%. In ...

TY - JOUR. T1 - Emergent endovascular treatment of intractable head and neck hemorrhage. AU - Hsu, Yuan Yu. AU - Lim, Kun Eng. AU - Chen, Chi Jen. AU - Wong, Yon Cheong. AU - Wang, Li Jen. AU - Hsu, Wen Chin. PY - 1999/10. Y1 - 1999/10. N2 - During the last 3 years, 11 patients with intractable head and neck hemorrhage (6 craniofacial injuries, 2 surgical complications, 2 nasopharyngeal carcinomas, and 1 mandibular arteriovenous malformation) were sent to our angiographic suite for emergency management. Arterial disruption with pseudoaneurysm formation was the most common angiographic finding. The arteries responsible for active bleeding included internal maxillary artery (most common), superficial temporal artery, facial artery, and lingual artery. Microcoils, particles, and liquid adhesives were used, separately or in combination, to achieve hemostasis successfully in 10 patients. No major complications related to the procedure occurred. Diagnostic angiography and therapeutic embolization can ...

Treatment of liver metastases with percutaneous embolization (coiling) (costs for program #151583) ✔ University Hospital Münster ✔ Department of Pediatric and Adolescent Medicine, General Pediatrics ✔ BookingHealth.com

Vocal cord paralysis following Percutaneous Embolization of a Vagal Paraganglioma - International Journal of Head and Neck Surgery, Feb 2011

TY - JOUR. T1 - Ruptured Persistent Sciatic Artery Aneurysm Managed by Endovascular Embolization. AU - Rezayat, Combiz. AU - Sambol, Elliot. AU - Goldstein, Lee. AU - Broderick, Stephen R.. AU - Karwowski, John K.. AU - McKinsey, James F.. AU - Vouyouka, Ageliki G.. PY - 2010/1. Y1 - 2010/1. N2 - Persistent sciatic artery (PSA) is a rare vascular anomaly present in 0.025% to 0.05% of the population. They are particularly prone to aneurysmal degeneration, potentially leading to distal ischemia, sciatic neuropathy, or rarely rupture. Here, we describe a case of a ruptured PSA aneurysm managed by endovascular embolization. A 70-year-old man initially presented with acute left lower extremity ischemia. He was found to have a popliteal embolus originating from a complete persistent sciatic artery aneurysm. He underwent thrombolysis followed by a femoropopliteal bypass and ligation of the proximal popliteal artery to exclude the PSA. Four weeks later he re-presented with severe pain, a pulsatile ...

DISCUSSION The use of an alternative technique to surgery with a lower morbidity and shorter hospital stays represents a significant medical advance, because women who do not wish to undergo a hysterectomy for a fibroid tumor have now access to different less-invasive alternatives7. The embolization technique involves a selective blockade of the blood flow of the vessels of the fibroid with embolic agents through catheters. These embolic agents can be classified into different types8, 9, 10, and the literature does not describe any problems related to any possible reactions they might cause. The insertion of catheters does not require general anesthesia, and it can be done with local anesthesia and a mild sedation11, although the insertion of an epidural catheter allows for a proper analgesia and the control of pain after the embolization. The size of the fibroids that underwent embolization was variable, although they were usually of less than 10 cm. The effectiveness of the embolization of ...

AIM: The aim of this study is to report the effectiveness of selective endovascular embolization with N-butyl cyanoacrylate (NBCA) in the treatment of traumatic intrarenal arterial pseudoaneurysms. ...

Abstract: BACKGROUND AND PURPOSE: Self-expandable stents are an effective tool for coil embolization of wide-neck intracranial aneurysms. The purpose of this study was to assess the feasibility and results of bailout stent positioning during rescue situations after deployment of ≥1 coil.. MATERIALS AND METHODS: Among 318 aneurysms treated by coil embolization in 267 patients, 16 patients who were treated by bailout stent deployment were retrospectively reviewed. Bailout procedures were performed to relieve potential parent artery compromise caused by the protruded coil loops or to prevent migration of the unstable coil basket. The size/location of the aneurysm, technical feasibility, successful stabilization rate, and procedure-related complications were evaluated.. RESULTS: The locations of the aneurysms were the internal carotid artery (n = 12) and basilar artery (n = 4). The mean aneurysm size was 8.3 mm (range, 3.5-19.4 mm) with hemorrhagic presentation in 3 patients. Relief/prevention of ...

A prospective study was designed to evaluate clinical outcome in a series of 100 consecutively treated patients who underwent endovascular embolization of 104 intracranial aneurysms using Guglielmi detachable coils (GDCs). Midterm clinical outcome (2-6 years, average 3.5 years) was obtained for 94 p …

Doctors for Uterine Artery Embolization in Guntur - Book Doctor Appointment, Consult Online, View Doctor Fees, User Reviews, Address and Phone Numbers of Doctors for Uterine Artery Embolization | Lybrate

Medtronic (NYSE:MDT) said today it won expanded FDA approval for its Pipeline Flex embolization device.. The device is now indicated for patients with small or medium, wide-necked brain aneurysms in the territory from the petrous to the terminus of the internal carotid artery, the Fridley, Minn.-based company said.. The Pipeline Flex was previously cleared for the endovascular treatment of adults with large or giant wide-necked intracranial aneurysms from the petrous to the superior hypophyseal segments, Medtronic said.. Clearance came based on data from the 141-patient PREMIER trial of the device, which reported a one-year average occlusion rate of 76.7% with the use of 1.1 device per subject on average and an average 2.2% rate of major stroke or neurological death, the company said.. Premier is another landmark study with Pipeline and moves the bar on the safe treatment of wide-necked brain aneurysms. This data changes the way we, as physicians, think about using Pipeline Flex to treat our ...

OBJECT: Endovascular treatment of very small aneurysms poses a significant technical challenge for endovascular therapists. The authors review their experience with a series of patients who had intracranial aneurysms smaller than 3 mm in diameter. METHODS: Between 1995 and 2006, 97 very small aneurysms (defined for purposes of this study as | 3 mm in diameter) were diagnosed in 94 patients who were subsequently referred for endovascular treatment. All patients presented after subarachnoid hemorrhage, which was attributed to the very small aneurysms in 85 patients. The authors reviewed the endovascular treatment, the clinical and angiographic results of the embolization, and the complications. RESULTS: Five (5.2%) of the 97 endovascular procedures failed, and these patients underwent craniotomy and clip ligation. Of the 92 aneurysms successfully treated by coil embolization, 64 (69.6%) were completely occluded and 28 (30.4%) showed minor residual filling or neck remnants on the immediate postembolization

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Introduction: Flow diverters (FDs) aim to treat intracranial aneurysms by altering intra-aneurysmal hemodynamics. Reports have suggested aneurysm and parent artery shape may affect flow reduction in FD-treatment. The purpose of this study is to gain insight into the way in which aneurysm shape and parent artery curvature influence the ability of FDs to redirect flow.. Hypothesis: Aneurysm dome size and parent artery curvature affect FD-induced flow reduction within an aneurysm.. Methods: FD models constructed based on the Pipeline Embolization Device with 35% area coverage, 30 um strand diameter, and 4 mm nominal diameter were implemented for hemodynamic simulation analysis. The flow reduction effects were tested using aneurysm models featuring different dome sizes and parent artery curvatures. Aneurysm blood flow was analyzed before and after FD stenting in regions of the aneurysm neck, body, and dome.. Results: We found that aneurysms with higher parent artery curvature had increased systole ...

TY - JOUR. T1 - Endovascular treatment of direct carotid cavernous fistulae. T2 - A pictorial review. AU - Gupta, Arun K.. AU - Purkayastha, Sukalyan. AU - Thamburaj, Krishnamoorthy. AU - Bodhey, Narendra K.. AU - Kapilamoorthy, T. R.. AU - Kesavadas, C.. AU - Thomas, Bejoy. PY - 2006/11/1. Y1 - 2006/11/1. N2 - Introduction: Direct carotid-cavernous fistulae (CCFs) are type A fistulae according to Barrows classification. Endovascular treatment of these lesions is challenging. Methods: The purpose of this review was to evaluate the endovascular treatment of direct CCFs. We also describe the technique, symptomatology and complications associated with the procedure and report on the long-term follow-up in our treated patients. Results: A total of 89 patients with a direct CCF were treated. All patients had baseline brain CT or MR imaging. Treatment comprised transarterial balloon or coil embolizations. The patients were followed up at 1 month and then every 6 months thereafter. Detachable balloons ...

Recent advances in endovascular techniques have led to increasing rates of anatomical cure of AVMs.1,5,9,11,16 Familiarization of practitioners with the properties of Onyx and contemporary evolution of endovascular technology have afforded safety for prolonged injection time of liquid embolics.1,8 Nevertheless, for accomplishing a successful AVM embolization, the close approach to the nidus remains the major determinant and must be pursued.11 It allows the embolic agent to diffuse into the vascular apparatus of the shunt, sparing normal brain supply branches.1,5,9,11,12,16. In some instances, especially in the deepest portion of the AVM, recurrent configuration and unfavorable angled loops at the origin of the feeders lead to unstable microcatheter navigation.7,9,15 Attempts to gain distal access result in prolapse of the system into the parent vessel.19 The struggling microcatheter navigation usually requires multiple attempts and excessive wire exchanges, leading to distal wire perforation in ...

Transcatheter closure of PDAs is rapidly becoming the treatment of choice at most centers in larger infants, children, and adults. Since the initial descriptions of PDA closure with Gianturco coils, there have been various techniques for coil delivery reported to achieve greater coil stability during closure (4-6). The most frequent complication using Gianturco coils has been coil embolization in up to 10% of cases (7). Detachable coils were created to address the lack of control during implantation and release of the Gianturco coils, with a decrease in reported embolization rates (7). Despite high success rates for ductal closure with coils, these devices were created for occlusion of other vascular structures and were not made to conform to conical shape of most PDAs (type A). Several devices have been developed specifically for PDA closure. The Nit-Occlud (PFM Medical, Carlsbad, California) coil occlusion system is composed of a stainless steel coil that, once released, assumes a biconical ...