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Mechanical thrombectomy

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https://www.readbyqxmd.com/read/27907956/intensive-care-management-of-the-endovascular-stroke-patient
#1
Julian Bösel
Acute ischemic stroke caused by the occlusion of large brain vessels can be treated effectively by mechanical thrombectomy, as proved by recent strong and consistent evidence from high-quality randomized trials. This new era of endovascular stroke treatment, however, poses particular challenges that go far beyond the so far gold standard of intravenous thrombolysis alone. Because these stroke patients usually present with severe neurologic deficits, may be unstable from cardiac or pulmonary instability, have to endure an invasive intervention of sometimes long duration, may suffer complications and require close postinterventional follow-up, they often demand intensive care measures...
December 2016: Seminars in Neurology
https://www.readbyqxmd.com/read/27896413/endovascular-revascularization-of-hemodialysis-thrombosed-grafts-with-the-hydrodynamic-thrombectomy-catheter-our-7-year-experience
#2
Patrícia Bermudez, Nestor Fontseré, Gaspar Mestres, Andres García-Gámez, Marta Barrufet, Marta Burrel, Rosa Gilabert, Fernando Gómez, Juan Macho
PURPOSE: To evaluate the efficacy and safety of the hydrodynamic thrombectomy catheter (AngioJet DVX) in the salvage of thrombosed hemodialysis vascular grafts. MATERIALS AND METHODS: A retrospective study was designed, including all patients with occluded arteriovenous grafts treated with the AngioJet system between 2007 and 2014 in our institution. Outcomes included technical success, clinical success, complications, and primary and secondary patencies. Procedural success was defined as angiographic confirmation of flow restoration, the presence of a pulsatile thrill along the graft, and successful resumption of at least one hemodialysis session...
November 28, 2016: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/27895242/availability-of-endovascular-therapies-for-cerebrovascular-disease-at-primary-stroke-centers
#3
Mark J Alberts, Jean Range, William Spencer, Vicki Cantwell, M J Hampel
BACKGROUND: Endovascular therapies (EVTs) are useful for treating cerebrovascular disease. There are few data about the availability of such services at primary stroke centers (PSCs). Our hypothesis was that some of these services may be available at some PSCs. METHODS: We conducted an internet-based survey of hospitals certified as PSCs by the Joint Commission. The survey inquired about EVTs such as intra-arterial (IA) lytics, IA mechanical clot removal, coiling of aneurysms, and cervical arterial stenting, physician training, coverage models, hospital type, and outcomes...
November 28, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27876658/stenting-for-carotid-web-a-case-report
#4
R Martínez-Pérez, S P Lownie, S Pandey, M R Boulton
BACKGROUND: The carotid web is an intraluminal shelf-like projection arising from the posterior wall of the carotid bifurcation, and is an uncommon etiology of ischemic strokes. Our objective is to describe the feasibility of endovascular stenting to treat this condition CASE REPORT: In a 47-year-old female with a sudden occlusion of her right middle cerebral artery. CT angiogram and digital subtraction angiography showed the presence of a carotid web in the ipsilateral carotid bifurcation...
November 19, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27876521/increased-risk-of-renal-dysfunction-with-percutaneous-mechanical-thrombectomy-compared-with-catheter-directed-thrombolysis
#5
Katherine L Morrow, Ann H Kim, Steven A Plato, Andrew J Shevitz, Jerry Goldstone, Henry Baele, Vikram S Kashyap
OBJECTIVE: Percutaneous mechanical thrombectomy (PMT) is regularly used in the treatment of both venous and arterial thrombosis. Although there has been no formal report, PMT has been linked to cases of reversible postoperative acute kidney injury (AKI). The purpose of this study is to evaluate the risk of renal dysfunction in patients undergoing PMT vs catheter-directed thrombolysis (CDT) for treatment of an acute thrombus. METHODS: This study is a retrospective review of all patients in a single institution with a Current Procedural Terminology code for PMT or CDT from January 2009 through December 2014...
November 19, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27871458/eligibility-for-mechanical-thrombectomy-in-acute-ischemic-stroke-a-phase-iv-multi-center-screening-log-registry
#6
Georgios Tsivgoulis, Nitin Goyal, Robert Mikulik, Vijay K Sharma, Aristeidis H Katsanos, Ramin Zand, Prakash R Paliwal, Andromachi Roussopoulou, Ondrej Volny, Abhi Pandhi, Christina Zompola, Lucas Elijovich, Apostolos Safouris, Jason Chang, Andrei V Alexandrov, Anne W Alexandrov
No eligibility screening logs were kept in recent mechanical thrombectomy (MT) RCTs establishing safety and efficacy of endovascular reperfusion therapies for acute ischemic stroke (AIS). We sought to evaluate the potential eligibility for MT among consecutive AIS patients in a prospective international multicenter study. We prospectively evaluated consecutive AIS patients admitted in four tertiary-care stroke centers during a twelve-month period. Potential eligibility for MT was evaluated using inclusion criteria from MR CLEAN & REVASCAT...
December 15, 2016: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/27865097/etiology-and-treatment-of-acute-inferior-vena-cava-thrombosis
#7
REVIEW
Wanyin Shi, Joshua D Dowell
Inferior vena cava thrombosis (IVCT) is a rare but severe disease that is associated with a high rate of mortality. IVCT can be categorized into primary versus secondary thrombosis dependent upon the underlying pathophysiology. The diagnosis includes both clinical probability assessment as well as the imaging evaluation. The optimal therapeutic strategy remains the target of continued research. Although anticoagulation therapy remains fundamental in treating IVCT, its inherent limitations have led to the use of minimally invasive, endovascular treatment options, including transcatheter thrombolysis, mechanical thrombectomy or a combination of these techniques...
July 21, 2016: Thrombosis Research
https://www.readbyqxmd.com/read/27863833/rapid-systematic-review-intra-arterial-thrombectomy-clot-retrieval-for-selected-patients-with-acute-ischemic-stroke
#8
William J Meurer, Bradley E Barth, Gary Gaddis, Gary M Vilke, Samuel H F Lam
BACKGROUND: Acute ischemic stroke (AIS) is a leading cause of morbidity and mortality. However, precisely defining the optimal treatment for individual patients early after AIS onset remains elusive. There has recently been a surge in published studies documenting the effectiveness of mechanical intra-arterial thrombectomy for treatment of a subset of patients with AIS. This therapy has been proposed and studied for the small (<1.2%) subgroup of patients with ischemic strokes who have "large vessel" strokes or strokes that fail to improve after the administration of tissue plasminogen activator (t-PA)...
November 15, 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27856113/clinical-outcome-predicted-by-collaterals-depends-on-technical-success-of-mechanical-thrombectomy-in-middle-cerebral-artery-occlusion
#9
Alexandra S Gersing, Benedikt J Schwaiger, Justus F Kleine, Johannes Kaesmacher, Silke Wunderlich, Benjamin Friedrich, Sascha Prothmann, Claus Zimmer, Tobias Boeckh-Behrens
BACKGROUND: This study aimed to analyze the effects of technical outcome of mechanical thrombectomy (MTE) on the associations between collateral status, assessed with pretreatment computed tomography angiography (CTA), and neurological and functional outcome, as well as associations between collaterals and metabolic risk factors (arterial hypertension, diabetes, hyperlipidemia, overweight). METHODS: Prospectively collected data of 115 patients with CTA-proven isolated middle cerebral artery occlusion treated successfully with MTE (Thrombosis in Cerebral Infarction [TICI] scale 2b or 3) were assessed retrospectively...
November 14, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27846459/simplifying-electrocardiographic-assessment-in-stemi-reperfusion-management-pros-and-cons
#10
REVIEW
Cheuk-Kit Wong
Current guidelines on STEMI reperfusion management do not incorporate further electrocardiographic details over the presence of significant ST elevation. Fibrinolysis is considered an alternative therapy to primary PCI if there is a long PCI-related delay, but the 2 therapies should not be combined. Meanwhile, reperfusion for ischemic stroke has evolved on mechanistic understanding - reperfusion benefit being greatest in the patient with small "core" infarct and large ischemic "penumbra". Fibrinolysis is not regarded as an alternative to mechanical thrombectomy, and the 2 therapies can be combined...
November 11, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27845905/distance-to-thrombus-in-acute-middle-cerebral-artery-stroke-predicts-basal-ganglia-infarction-after-mechanical-thrombectomy
#11
Benjamin Friedrich, Donald Lobsien, Christian Maegerlein, Silke Wunderlich, Claus Zimmer, Johannes Kaesmacher, Justus Kleine
BACKGROUND AND PURPOSE: This study examines if involvement of the lenticulostriate arteries (LSAs) in MCA stroke and consecutive infarction of the basal ganglia can be predicted by the exact occlusion site, as determined in pre-interventional CT or MRI imaging. METHODS: Retrospective analysis of 212 patients with acute isolated MCA occlusions treated with mechanical thrombectomy. The occlusion site was assessed using the Distance to Thrombus (DT). Affection of LSAs by the occlusion was determined by analysis of pre- and post-interventional DSA runs...
November 10, 2016: Oncotarget
https://www.readbyqxmd.com/read/27832926/update-on-specificities-of-stroke-in-women
#12
Hanne Christensen, Line Bentsen, Louisa Christensen
The majority of strokes occur in women who in crude numbers have poorer outcome including higher mortality from stroke than men. This may, however, to a large degree be explained by the preponderance of women in the older age groups. Nevertheless, incidence of stroke is higher in men than in women. Overall rates of stroke decline, but more in men than in women; consequently the excess number of strokes in women will be on the rise in the years to come. Risk factors differ between men and women: e.g. rates of atrial fibrillation and hypertension are higher in women with stroke, while rates of e...
November 7, 2016: La Presse Médicale
https://www.readbyqxmd.com/read/27821473/mechanical-thrombectomy-in-patients-with-medical-contraindications-for-intravenous-thrombolysis-a-prospective-observational-study
#13
María Alonso de Leciñana, Patricia Martínez-Sánchez, Andrés García-Pastor, Michal M Kawiorski, Patricia Calleja, Borja E Sanz-Cuesta, Fernando Díaz-Otero, Remedios Frutos, Fernando Sierra-Hidalgo, Gerardo Ruiz-Ares, Eduardo Fandiño, Exuperio Díez-Tejedor, Antonio Gil-Nuñez, Blanca Fuentes
BACKGROUND AND PURPOSE: The present study was conducted with the objective of evaluating the safety of primary mechanical thrombectomy (MT) in patients with large vessel occlusion (LVO) stroke and comorbidities that preclude treatment with IV thrombolysis (IVT), compared with patients who received standard IVT treatment followed by MT. Secondary objectives were to analyse the recanalization rate and outcomes. METHODS: A prospective observational multicenter study (FUN-TPA) that recruited patients treated within 4...
November 7, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27816339/management-of-acute-cerebral-ischaemia
#14
Solène Moulin, Didier Leys
Stroke is a major public health issue. Many are treatable in the acute stage, provided patients are admitted soon enough. The overall incidence of stroke in Western countries is approximately 2400 per year per million inhabitants, and 80% are due to cerebral ischaemia. The prevalence is approximately 12,000 per million inhabitants. Stroke is associated with increased long-term mortality, handicap, cognitive and behavioural impairments, recurrence, and an increased risk of other types of vascular events. There is strong evidence that stroke patients should be treated in dedicated stroke units; each time 24 patients are treated in a stroke unit, instead of a conventional ward, one death and one dependence are prevented...
November 2, 2016: La Presse Médicale
https://www.readbyqxmd.com/read/27814432/pharmacomechanical-thrombectomy-for-iliofemoral-deep-vein-thrombosis
#15
REVIEW
Lindsay Robertson, Olivia McBride, Anne Burdess
BACKGROUND: Deep venous thrombosis (DVT) occurs in approximately one in 1000 adults every year, and has an annual mortality of 14.6%. In particular, iliofemoral DVT can lead to recurrent thrombosis and post-thrombotic syndrome (PTS), a painful condition which can lead to chronic venous insufficiency, oedema, and ulceration. It causes significant disability, impaired quality of life, and economic burden. Early thrombus removal techniques have been advocated in patients with an iliofemoral DVT in order to improve vein patency, prevent valvular dysfunction, and reduce future complications, such as post-thrombotic syndrome and venous ulceration...
November 4, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27811134/impact-of-modified-tici-3-versus-modified-tici-2b-reperfusion-score-to-predict-good-outcome-following-endovascular-therapy
#16
C Dargazanli, A Consoli, M Barral, J Labreuche, H Redjem, G Ciccio, S Smajda, J P Desilles, G Taylor, C Preda, O Coskun, G Rodesch, M Piotin, R Blanc, B Lapergue
BACKGROUND AND PURPOSE: The TICI score is widely used to evaluate cerebral perfusion before and after the endovascular treatment of stroke. Recent studies showing the effectiveness and safety of mechanical thrombectomy combine modified TICI 2b and modified TICI 3 to assess the technical success of endovascular treatment. The purpose of this study was to determine how much clinical outcomes differ between patients achieving modified TICI 2b and modified TICI 3 reperfusion. MATERIALS AND METHODS: We analyzed 222 consecutive patients with acute large intracranial artery occlusion of the anterior circulation having achieved modified TICI 2b or modified TICI 3 reperfusion after thrombectomy...
November 3, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27799374/where-did-the-clot-go-an-unusual-complication-of-mechanical-thrombectomy-caused-by-malignancy-related-subclavian-steal-phenomenon-in-a-patient-with-acute-basilar-artery-occlusion
#17
Nikkie Randhawa, Jonathan P Squires, Manraj Kanwal Singh Heran, Sharanpal K Mann
Subclavian steal is a relatively common vascular phenomenon usually caused by atherosclerotic disease. While symptoms are rare, arm claudication of the ipsilateral limb is most common, with paroxysmal symptoms of vertebrobasilar insufficiency (often exercise induced) being relatively uncommon. Here we present a case of brachial artery embolism during mechanical thrombectomy for basilar artery thrombosis, secondary to subclavian steal phenomenon. This atypical and potentially irreversible complication should be considered in patients with acute ischemic stroke undergoing neurointerventional management when subclavian steal is discovered angiographically...
October 31, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27798267/fully-automated-stroke-tissue-estimation-using-random-forest-classifiers-faster
#18
Richard McKinley, Levin Häni, Jan Gralla, M El-Koussy, S Bauer, M Arnold, U Fischer, S Jung, Kaspar Mattmann, Mauricio Reyes, Roland Wiest
Several clinical trials have recently proven the efficacy of mechanical thrombectomy for treating ischemic stroke, within a six-hour window for therapy. To move beyond treatment windows and toward personalized risk assessment, it is essential to accurately identify the extent of tissue-at-risk ("penumbra"). We introduce a fully automated method to estimate the penumbra volume using multimodal MRI (diffusion-weighted imaging, a T2w- and T1w contrast-enhanced sequence, and dynamic susceptibility contrast perfusion MRI)...
October 19, 2016: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/27797875/where-did-the-clot-go-an-unusual-complication-of-mechanical-thrombectomy-caused-by-malignancy-related-subclavian-steal-phenomenon-in-a-patient-with-acute-basilar-artery-occlusion
#19
Nikkie Randhawa, Jonathan P Squires, Manraj Kanwal Singh Heran, Sharanpal K Mann
Subclavian steal is a relatively common vascular phenomenon usually caused by atherosclerotic disease. While symptoms are rare, arm claudication of the ipsilateral limb is most common, with paroxysmal symptoms of vertebrobasilar insufficiency (often exercise induced) being relatively uncommon. Here we present a case of brachial artery embolism during mechanical thrombectomy for basilar artery thrombosis, secondary to subclavian steal phenomenon. This atypical and potentially irreversible complication should be considered in patients with acute ischemic stroke undergoing neurointerventional management when subclavian steal is discovered angiographically...
October 25, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27789787/initial-experience-with-sofia-as-an-intermediate-catheter-in-mechanical-thrombectomy-for-acute-ischemic-stroke
#20
Johnny H Y Wong, Huy M Do, Nicholas A Telischak, Adrienne M Moraff, Robert L Dodd, Michael P Marks, Shreya M Ingle, Jeremy J Heit
BACKGROUND: The benefits of mechanical thrombectomy for emergent large vessel occlusion (ELVO) have been established. Combined mechanical/aspiration (Solumbra) and a direct aspiration as a first pass technique (ADAPT) are valid procedures requiring an intermediate catheter for clot suction. Recently, SOFIA (Soft torqueable catheter Optimized For Intracranial Access) was developed as a single lumen flexible catheter with coil and braid reinforcement, but its suitability for mechanical thrombectomy had not been evaluated...
October 27, 2016: Journal of Neurointerventional Surgery
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