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Fiedler J, Roubec M, Grubhoffer M, Ostrý S, Procházka V, Langová K, Školoudík D. Emergent microsurgical intervention for acute stroke after mechanical thrombectomy failure: a prospective study. J Neurointerv Surg 2022; 15:439-445. [PMID: 35428739 PMCID: PMC10176344 DOI: 10.1136/neurintsurg-2022-018643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 04/03/2022] [Indexed: 11/04/2022]
Abstract
BackgroundDespite all the gains that have been achieved with endovascular mechanical thrombectomy revascularization and intravenous thrombolysis logistics since 2015, there is still a subgroup of patients with salvageable brain tissue for whom persistent emergent large vessel occlusion portends a catastrophic outcome.ObjectiveTo test the safety and efficacy of emergent microsurgical intervention in patients with acute ischemic stroke and symptomatic middle cerebral artery occlusion after failure of mechanical thrombectomy.MethodsA prospective two-center cohort study was conducted. Patients with acute ischemic stroke and middle cerebral artery occlusion for whom recanalization failed at center 1 were randomly allocated to the microsurgical intervention group (MSIG) or control group 1 (CG1). All similar patients at center 2 were included in the control group 2 (CG2) with no surgical intervention. Microsurgical embolectomy and/or extracranial–intracranial bypass was performed in all MSIG patients at center 1.ResultsA total of 47 patients were enrolled in the study: 22 at center 1 (12 allocated to the MSIG and 10 to the CG1) and 25 patients at center 2 (CG2). MSIG group patients showed a better clinical outcome on day 90 after the stroke, where a modified Rankin Scale score of 0–2 was reached in 7 (58.3%) of 12 patients compared with 1/10 (10.0%) patients in the CG1 and 3/12 (12.0%) in the CG2.ConclusionsThis study demonstrated the potential for existing microsurgical techniques to provide good outcomes in 58% of microsurgically treated patients as a third-tier option.
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Affiliation(s)
- Jiří Fiedler
- Department of Neurosurgery, Nemocnice České Budějovice, České Budějovice, Jihočeský, Czech Republic
- Department of Neurosurgery, Univerzita Karlova Lékařská fakulta v Plzni, Plzeň, Plzeňský, Czech Republic
| | - Martin Roubec
- Department of Neurology, University Hospital Ostrava, Ostrava, Moravskoslezský, Czech Republic
- Center for Health Research, Faculty of Medicine, University of Ostrava, Ostrava, Moravskoslezský, Czech Republic
| | - Marek Grubhoffer
- Department of Neurosurgery, Nemocnice České Budějovice, České Budějovice, Jihočeský, Czech Republic
- Department of Neurosurgery, Univerzita Karlova Lékařská fakulta v Plzni, Plzeň, Plzeňský, Czech Republic
| | - Svatopluk Ostrý
- Department of Neurology, Nemocnice České Budějovice, České Budějovice, Jihočeský, Czech Republic
- Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University and Military University Hospital, Praha, Praha, Czech Republic
| | - Václav Procházka
- Department of Radiology, University Hospital Ostrava, Ostrava, Moravskoslezský, Czech Republic
| | - Kateřina Langová
- Department of Biophysics, Faculty of Medicine and Dentistry, Palacký University Olomouc, Olomouc, Olomoucký, Czech Republic
| | - David Školoudík
- Center for Health Research, Faculty of Medicine, University of Ostrava, Ostrava, Moravskoslezský, Czech Republic
- Department of Radiology, University Hospital Ostrava, Ostrava, Moravskoslezský, Czech Republic
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Bruggeman AAE, Kappelhof M, Arrarte Terreros N, Tolhuisen ML, Konduri PR, Boodt N, van Beusekom HMM, Hund HM, Taha A, van der Lugt A, Roos YBWEM, van Es ACGM, van Zwam WH, Postma AA, Dippel DWJ, Lingsma HF, Marquering HA, Emmer BJ, Majoie CBLM. Endovascular treatment for calcified cerebral emboli in patients with acute ischemic stroke. J Neurosurg 2021; 135:1402-1412. [PMID: 33799302 DOI: 10.3171/2020.9.jns201798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 09/08/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Calcified cerebral emboli (CCE) are a rare cause of acute ischemic stroke. The authors aimed to assess the association of CCE with functional outcome, successful reperfusion, and mortality. Furthermore, they aimed to assess the effectiveness of intravenous alteplase treatment and endovascular treatment (EVT), as well as the best first-line EVT approach in patients with CCE. METHODS The Multicenter Randomized Controlled Trial of Endovascular Treatment for Acute Ischemic Stroke in the Netherlands (MR CLEAN) Registry is a prospective, observational multicenter registry of patients treated with EVT for acute ischemic stroke in 16 intervention hospitals in the Netherlands. The association of CCE with functional outcome, reperfusion, and mortality was evaluated using logistic regression models. Univariable comparisons were made to determine the effectiveness of intravenous alteplase treatment and the best first-line EVT approach in CCE patients. RESULTS The study included 3077 patients from the MR CLEAN Registry. Fifty-five patients (1.8%) had CCE. CCE were not significantly associated with worse functional outcome (adjusted common OR 0.71, 95% CI 0.44-1.15), and 29% of CCE patients achieved functional independence. An extended Thrombolysis in Cerebral Infarction score ≥ 2B was significantly less often achieved in CCE patients compared to non-CCE patients (adjusted OR [aOR] 0.52, 95% CI 0.28-0.97). Symptomatic intracranial hemorrhage occurred in 8 CCE patients (15%) vs 171 of 3022 non-CCE patients (6%; p = 0.01). The median improvement on the National Institutes of Health Stroke Scale (NIHSS) was 2 in CCE patients versus 4 in non-CCE patients (p = 0.008). CCE were not significantly associated with mortality (aOR 1.16, 95% CI 0.64-2.12). Intravenous alteplase use in CCE patients was not associated with functional outcome or reperfusion. In CCE patients with successful reperfusion, stent retrievers were more often used as the primary treatment device (p = 0.04). CONCLUSIONS While patients with CCE had significantly lower reperfusion rates and less improvement on the NIHSS after EVT, CCE were not significantly associated with worse functional outcome or higher mortality rates. Therefore, EVT should still be considered in this specific group of patients.
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Affiliation(s)
| | - Manon Kappelhof
- Departments of1Radiology and Nuclear Medicine
- 2Biomedical Engineering and Physics, and
| | | | - Manon L Tolhuisen
- Departments of1Radiology and Nuclear Medicine
- 2Biomedical Engineering and Physics, and
| | - Praneeta R Konduri
- Departments of1Radiology and Nuclear Medicine
- 2Biomedical Engineering and Physics, and
| | - Nikki Boodt
- Departments of3Radiology and Nuclear Medicine
- Departments of3Radiology and Nuclear Medicine
- 5Public Health
| | | | - Hajo M Hund
- 6Histology and MS Imaging Lab at Experimental Cardiology, and
- 6Histology and MS Imaging Lab at Experimental Cardiology, and
- 8Department of Radiology, Haaglanden MC, Den Haag
| | - Aladdin Taha
- 4Neurology, and
- 6Histology and MS Imaging Lab at Experimental Cardiology, and
| | | | - Yvo B W E M Roos
- 9Neurology, Amsterdam University Medical Centers, AMC, Amsterdam
| | - Adriaan C G M van Es
- 10Department of Radiology and Nuclear Medicine, Leiden University Medical Center, Leiden; and
| | - Wim H van Zwam
- 11Department of Radiology and Nuclear Medicine, School for Mental Health and Sciences, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Alida A Postma
- 11Department of Radiology and Nuclear Medicine, School for Mental Health and Sciences, Maastricht University Medical Center, Maastricht, The Netherlands
| | | | | | - Henk A Marquering
- Departments of1Radiology and Nuclear Medicine
- 2Biomedical Engineering and Physics, and
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Maurer CJ, Dobrocky T, Joachimski F, Neuberger U, Demerath T, Brehm A, Cianfoni A, Gory B, Berlis A, Gralla J, Möhlenbruch MA, Blackham KA, Psychogios MN, Zickler P, Fischer S. Endovascular Thrombectomy of Calcified Emboli in Acute Ischemic Stroke: A Multicenter Study. AJNR Am J Neuroradiol 2020; 41:464-468. [PMID: 32029470 DOI: 10.3174/ajnr.a6412] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 12/23/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND PURPOSE Large intracranial vessel occlusion due to calcified emboli is a rare cause of major stroke. We assessed the prevalence, imaging appearance, the effectiveness of mechanical thrombectomy, and clinical outcome of patients with large-vessel occlusion due to calcified emboli. MATERIALS AND METHODS We performed a retrospective analysis of clinical and procedural data of consecutive patients who underwent mechanical thrombectomy due to calcified emboli in 7 European stroke centers. RESULTS We screened 2969 patients, and 40 patients matched the inclusion criteria, accounting for a prevalence of 1.3%. The mean maximal density of the thrombus was 327 HU (range, 150-1200 HU), and the mean thrombus length was 9.2 mm (range, 4-20 mm). Four patients had multiple calcified emboli, and 2 patients had an embolic event during an endovascular intervention. A modified TICI score of ≥2b was achieved in 57.5% (23/40), with minimal-to-no reperfusion (modified TICI 0-1) in 32.5% (13/40) and incomplete reperfusion (modified TICI 2a) in 10% (4/40). Excellent outcome (mRS 0-1) was achieved in only 20.6%, functional independence (mRS 0-2) in 26.5% and 90-day mortality was 55.9%. CONCLUSIONS Acute ischemic stroke with large-vessel occlusion due to calcified emboli is a rare entity in patients undergoing thrombectomy, with considerably worse angiographic outcome and a higher mortality compared with patients with noncalcified thrombi. Good functional recovery at 3 months can still be achieved in about a quarter of patients.
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Affiliation(s)
- C J Maurer
- From the Departments of Diagnostic and Interventional Radiology and Neuroradiology (C.J.M., F.J., A.Berlis)
| | - T Dobrocky
- University Institute of Diagnostic and Interventional Neuroradiology (T.Dobrocky, J.G.), University of Bern, Inselspital, Bern, Switzerland
| | - F Joachimski
- From the Departments of Diagnostic and Interventional Radiology and Neuroradiology (C.J.M., F.J., A.Berlis)
| | - U Neuberger
- Department of Neuroradiology (U.N., M.A.M.), University of Heidelberg, Heidelberg, Germany
| | - T Demerath
- Department of Neuroradiology (T.Demerath, A.Brehm, K.A.B., M.N.P.), Clinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland
| | - A Brehm
- Department of Neuroradiology (T.Demerath, A.Brehm, K.A.B., M.N.P.), Clinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.,Department of Neuroradiology (A.Brehm, M.N.P.), University Medical Center Göttingen, Göttingen, Germany
| | - A Cianfoni
- Department of Neuroradiology (A.C.), Neurocenter of Southern Switzerland, Lugano, Switzerland
| | - B Gory
- Department of Diagnostic and Therapeutic Neuroradiology (B.G.), University Hospital of Nancy, Institut National de la Santé et de la Recherche Médicale U1254, Nancy, France
| | - A Berlis
- From the Departments of Diagnostic and Interventional Radiology and Neuroradiology (C.J.M., F.J., A.Berlis)
| | - J Gralla
- University Institute of Diagnostic and Interventional Neuroradiology (T.Dobrocky, J.G.), University of Bern, Inselspital, Bern, Switzerland
| | - M A Möhlenbruch
- Department of Neuroradiology (U.N., M.A.M.), University of Heidelberg, Heidelberg, Germany
| | - K A Blackham
- Department of Neuroradiology (T.Demerath, A.Brehm, K.A.B., M.N.P.), Clinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland
| | - M N Psychogios
- Department of Neuroradiology (T.Demerath, A.Brehm, K.A.B., M.N.P.), Clinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland.,Department of Neuroradiology (A.Brehm, M.N.P.), University Medical Center Göttingen, Göttingen, Germany
| | - P Zickler
- Neurology and Neurophysiology (P.Z.), Universitätsklinikum Augsburg, Augsburg, Germany
| | - S Fischer
- Institut für Diagnostische und Interventionelle Radiologie, Neuroradiologie (S.F.), Nuklearmedizin, Knappschaftskrankenhaus Bochum-Langendreer, Universitätsklinik, Bochum, Germany
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Johnson S, McCarthy R, Fahy B, Mereuta OM, Fitzgerald S, Gaudirc J, Remadi JP, Shotar E, Sourour NA, Doyle K, Gilvarry M, McGarry P, McHugh PE, Clarençon F. Development of an in vitro model of calcified cerebral emboli in acute ischemic stroke for mechanical thrombectomy evaluation. J Neurointerv Surg 2020; 12:1002-1007. [PMID: 31900353 DOI: 10.1136/neurintsurg-2019-015595] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 12/12/2019] [Accepted: 12/15/2019] [Indexed: 01/22/2023]
Abstract
: BACKGROUND: Calcified cerebral emboli (CCEs) are a rare cause of acute ischemic stroke (AIS) and are frequently associated with poor outcomes. The presence of dense calcified material enables reliable identification of CCEs using non-contrast CT. However, recanalization rates with the available mechanical thrombectomy (MT) devices remain low. OBJECTIVE: To recreate a large vessel occlusion involving a CCE using an in vitro silicone model of the intracranial vessels and to demonstrate the feasability of this model to test different endovascular strategies to recanalize an occlusion of the M1 segment of the middle cerebral artery (MCA). : METHODS: An in vitro model was developed to evaluate different endovascular treatment approaches using contemporary devices in the M1 segment of the MCA. The in vitro model consisted of a CCE analog placed in a silicone neurovascular model. Development of an appropriate CCE analog was based on characterization of human calcified tissues that represent likely sources of CCEs. Feasibility of the model was demonstrated in a small number of MT devices using four common procedural techniques. : RESULTS: CCE analogs were developed with similar mechanical behavior to that of ex vivo calcified material. The in vitro model was evaluated with various MT techniques and devices to show feasibility of the model. In this limited evaluation, the most successful retrieval approach was performed with a stent retriever combined with local aspiration through a distal access catheter, and importantly, with flow arrest and dual aspiration using a balloon guide catheter. : CONCLUSION: Characterization of calcified tissues, which are likely sources of CCEs, has shown that CCEs are considerably stiffer than thrombus. This highlights the need for a different in vitro AIS model for CCEs than those used for thromboemboli. Consequentially, an in vitro AIS model representative of a CCE occlusion in the M1 segment of the MCA has been developed.
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Affiliation(s)
- Sarah Johnson
- Biomedical Engineering, National University of Ireland Galway, Galway, Ireland
| | - Ray McCarthy
- Cerenovus, Galway Neuro Technology Centre, Galway, Ireland
| | - Brian Fahy
- Cerenovus, Galway Neuro Technology Centre, Galway, Ireland
| | | | - Seán Fitzgerald
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Julien Gaudirc
- Department of Vascular Surgery, Pitié-Salpêtrière Hospital, Paris, France
| | - Jean-Paul Remadi
- Department of Cardiac Surgery, Amiens University Hospital, Amiens, France
| | - Eimad Shotar
- Department of Neuroradiology, Pitie-Salpetriere Hospital, Paris, France
| | | | - Karen Doyle
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | | | - Patrick McGarry
- Biomedical Engineering, National University of Ireland Galway, Galway, Ireland
| | - Peter E McHugh
- Biomedical Engineering, National University of Ireland Galway, Galway, Ireland
| | - Frédéric Clarençon
- Department of Neuroradiology, Pitie-Salpetriere Hospital, Paris, France .,Sorbonne University, Paris, France
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Bardon M, Hanson J, O'Brien B, Naeem A. Calcified cerebral emboli: Incidence and implications. J Med Imaging Radiat Oncol 2018; 62:499-503. [PMID: 29665308 DOI: 10.1111/1754-9485.12730] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 03/01/2018] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Calcified cerebral emboli are an increasingly recognized cause of ischaemic stroke, although recognition amongst general radiologists and clinicians can be limited. Recent literature suggests that calcified cerebral emboli are likely more common than originally thought. This study aims to define the prevalence of calcified cerebral emboli as the most likely aetiology within a cohort of confirmed cases of acute stroke, as well as compare and contrast these cases with cases of 'incidental' intracranial calcification. METHODS Cases of confirmed stroke between May 2014 and May 2017 were reviewed by two readers to assess for the most likely aetiology. Cases of presumed calcified cerebral embolus were categorized in to 'possible' or 'definite'. The morphology, distribution and density were analysed by two independent readers, then subsequently discussed to reach a consensus. Cases were further studied in terms of likely proximal embolic source, therapeutic interventions and clinical outcomes. A further random selection of 220 non-contrast CT head examinations were reviewed over the same time period to assess for the presence of calcification which was favoured to be 'intravascular' using the same criteria. RESULTS A total of 220 cases of confirmed stroke were reviewed. Thirteen of these cases were thought to be most likely secondary to calcified cerebral emboli (5.9%). Of the 13 cases, eight were considered 'definite' as previous premorbid imaging without calcification was available. Twelve patients had emboli within the anterior circulation and only one patient had an embolus in the posterior circulation. Moderate calcified atherosclerotic disease was noted within the aorta and carotid arteries of all patients. Of the 220 patients within the control group, three cases were thought to have intracranial calcification most likely to be intravascular without clinical sequelae or other supportive imaging findings of infarct. CONCLUSION Previously thought to be a rare complication of intra-arterial instrumentation, calcified cerebral emboli have been shown to more commonly be associated with spontaneous cerebral infarction. Whilst literature in this area remains scant, recognition and differentiation of this entity has important clinical applications regarding immediate diagnosis of stroke on non-contrast imaging, modified treatment in the acute setting as well as in regards to recurrent event prognosis and secondary prevention.
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Affiliation(s)
- Miguel Bardon
- Gosford Hospital, Gosford, New South Wales, Australia
| | - Julian Hanson
- Gosford Hospital, Gosford, New South Wales, Australia
| | - Bill O'Brien
- Gosford Hospital, Gosford, New South Wales, Australia
| | - Adil Naeem
- Gosford Hospital, Gosford, New South Wales, Australia
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