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1. Iatrogenic arterial vasospasm during mechanical thrombectomy requiring treatment with intra‐arterial nimodipine might be associated with worse outcomes.

Author

Ferhat, Serine, Bellanger, Guillaume, Milnerowicz, Malgorzata, Kyheng, Maeva, Labreuche, Julien, Sibon, Igor, Khobzi, Mehdi, Abousleiman, Joe‐Marie, Popica, Dan‐Adrian, Moulin, Solene, Dargazanli, Cyril, Consoli, Arturo, Eker, Omer, Veunac, Louis, Premat, Kevin, Gory, Benjamin, Gentric, Jean‐Christophe, Moreno, Ricardo, Hassen, Wagih Ben, and Gauberti, Maxime

Subjects
*CEREBRAL infarction, *INTRACRANIAL hemorrhage, *TREATMENT effectiveness, *ISCHEMIC stroke, *ENDOVASCULAR surgery, *CEREBRAL vasospasm
Abstract

Background and Purpose: Vasospasm is a common iatrogenic event during mechanical thrombectomy (MT). In such circumstances, intra‐arterial nimodipine administration is occasionally considered. However, its use in the treatment of iatrogenic vasospasm during MT has been poorly studied. We investigated the impact of iatrogenic vasospasm treated with intra‐arterial nimodipine on outcomes after MT for large vessel occlusion stroke. Methods: We conducted a retrospective analysis of the multicenter observational registry Endovascular Treatment in Ischemic Stroke (ETIS). Consecutive patients treated with MT between January 2015 and December 2022 were included. Patients treated with medical treatment alone, without MT, were excluded. We also excluded patients who received another in situ vasodilator molecule during the procedure. Outcomes were compared according to the occurrence of cervical and/or intracranial arterial vasospasm requiring intraoperative use of in situ nimodipine based on operator's decision, using a propensity score approach. The primary outcome was a modified Rankin Scale (mRS) score of 0–2 at 90 days. Secondary outcomes included excellent outcome (mRS score 0–1), final recanalization, mortality, intracranial hemorrhage and procedural complications. Secondary analyses were performed according to the vasospasm location (intracranial or cervical). Results: Among 13,678 patients in the registry during the study period, 434 received intra‐arterial nimodipine for the treatment of MT‐related vasospasm. In the main analysis, comparable odds of favorable outcome were observed, whereas excellent outcome was significantly less frequent in the group with vasospasm requiring nimodipine (adjusted odds ratio [aOR] 0.78, 95% confidence interval [CI] 0.63–0.97). Perfect recanalization, defined as a final modified Thrombolysis In Cerebral Infarction score of 3 (aOR 0.63, 95% CI 0.42–0.93), was also rarer in the vasospasm group. Intracranial vasospasm treated with nimodipine was significantly associated with worse clinical outcome (aOR 0.64, 95% CI 0.45–0.92), in contrast to the cervical location (aOR 1.37, 95% CI 0.54–3.08). Conclusion: Arterial vasospasm occurring during the MT procedure and requiring intra‐arterial nimodipine administration was associated with worse outcomes, especially in case of intracranial vasospasm. Although this study cannot formally differentiate whether the negative consequences were due to the vasospasm itself, or nimodipine administration or both, there might be an important signal toward a substantial clinical impact of iatrogenic vasospasm during MT. [ABSTRACT FROM AUTHOR]

Published
2024
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2. Thrombectomy Complications in Large Vessel Occlusions: Incidence, Predictors, and Clinical Impact in the ETIS Registry

Author

Ngankou, Emmanuel Happi, Gory, Benjamin, Marnat, Gaultier, Richard, Sébastien, Bourcier, Romain, Sibon, Igor, Dargazanli, Cyril, Arquizan, Caroline, Maïer, Benjamin, Blanc, Raphaël, Lapergue, Bertrand, Consoli, Arturo, Vannier, Stéphane, Spelle, Laurent, Denier, Christian, Boulanger, Marion, Gauberti, Maxime, Saleme, Suzana, Macian, Francisco, Clarençon, Frédéric, Rosso, Charlotte, Naggara, Olivier, Turc, Guillaume, Ozkul-Wermester, Ozlem, Papagiannaki, Chrysanthi, Viguier, Alain, Cognard, Christophe, Lebras, Anthony, Evain, Sarah, Wolff, Valérie, Pop, Raoul, Timsit, Serge, Gentric, Jean Christophe, Bourdain, Frédéric, Veunac, Louis, Eugène, François, Finitsis, Stephanos Nikolaos, Piotin, Michel, Redjem, Hocine, Escalard, Simon, Dessilles, Jean Philippe, Delvoye, François, Smajda, Stanislas, Solène, Hebert, Mazighi, Mikael, Obadia, Mikael, Sabben, Candice, Seners, Pierre, Raynouard, Igor, Corabianu, Ovide, de Broucker, Thomas, Manchon, Eric, Taylor, Guillaume, Maacha, Malek Ben, Thion, Laurie Anne, Lecler, Augustin, Savatovsjy, Julien, Hospital, Foch, Wang, Adrien, Evrard, Serge, Tchikviladze, Maya, Ajili, Nadia, Weisenburgerlile, David, Gorza, Lucas, Buard, Géraldine, Coskun, Oguzhan, Di Maria, Federico, Rodesh, Georges, Zimatore, Sergio, Leguen, Morgan, Gratieux, Julie, Pico, Fernando, Rakotoharinandrasana, Haja, Tassan, Philippe, Poll, Roxanna, Marinier, Sylvie, Gariel, Florent, Barreau, Xavier, Berge, Jerome, Menegon, Patrice, Lucas, Ludovic, Olindo, Stéphane, Renou, Pauline, Sagnier, Sharmila, Poli, Mathilde, Debruxelles, Sabrina, Rouanet, François, Tourdias, Thomas, Liegey, Jean Sebastien, Briau, Pierre, Pangon, Nicolas, Detraz, Lili, Daumas-Duport, Benjamin, Alexandre, Pierre Louis, Roy, Monica, Lenoble, Cédric, Desal, Hubert Armand, Guillon, Benoît, de Gaalon, Solène, Preterre, Cécile, Bracard, Serge, Anxionnat, René, Braun, Marc, Derelle, Anne Laure, Romain, Tonnelet, Liao, Liang, Zhu, François, Schmitt, Emmanuelle, Planel, Sophie, Humbertjean, Lisa, Mione, Gioia, Lacour, Jean Christophe, Riou-Comte, Nolwenn, Audibert, Gérard, Voicu, Marcela, Alb, Lionel, Reitter, Marie, Brezeanu, Madalina, Masson, Agnès, Tabarna, Adriana, Podar, Iona, Guy, Sarah, Bechiri, Fatiha, Bourst, Pauline, Macian-Montoro, Francisco, Saleme, Suzanna, Mounayer, Charbel, Rouchaud, Aymeric, Gimenez, Laetitia, Cosnard, Alexandre, Costalat, Vincent, Gascou, Grégory, Lefèvre, Pierre Henri, Derraz, Imad, Riquelme, Carlos, Gaillard, Nicolas, Mourand, Isabelle, Corti, Lucas, Cagnazzo, Federico, ter Schiphorst, Adrien, Ferré, Jean-Christophe, Raoult, Hélène, Ronziere, Thomas, Lassale, Maria, Paya, Christophe, Gauvrit, Jean Yves, Tracol, Clément, Langnier-Lemercier, Sophie, Maurice, Axelle, Cochennec, Sabrina, Pinault, Mélanie, Shotar, Eimad, Sourour, Nader Antoine, Lenck, Stéphanie, Premat, Kévin, Anne Léger, Yves Samson, Crozier, Sophie, Baronnet, Flore, Alamowitch, Sonia, Bottin, Laure, Yger, Marion, Degos, Vincent, Chassin, Olivier, Chalumeau, Vanessa, Caroff, Jildaz, Venditti, Laura, Sarov, Mariana, Legris, Nicolas, Hassen, Wagih Ben, Boulouis, Grégoire, Rodriguez-Régent, Christine, Trystram, Denis, Kerleroux, Basile, Domigo, Valérie, Lamy, Catherine, Birchenall, Julia, Isabel, Clothilde, Lun, François, Januel, Anne Christine, Olivot, Jean Marc, Fontaine, Louis, Raposo, Nicolas, Bonneville, Fabrice, Albucher, Jean François, Calviere, Lionel, Darcourt, Jean, Bellanger, Guillaume, Tall, Philippe, Touzé, Emmanuel, Barbier, Charlotte, Schneckenburger, Romain, Cogez, Julien, Guettier, Sophie, Ognard, Julien, Merrien, François Mathias, Wermester, Ozlem Ozku, Massardier, Evelyne Guégan, Triquenot, Aude Bagan, Lefebvre, Margeaux, Bernady, Patricia, Lagoarde-Segot, Laurent, Cailliez, Hélène, Higue, David, Quenardelle, Véronique, Lauer, Valérie, Gheoca, Roxana, Pierre-Paul, Irène Nora, Beaujeux, Remy, Mihoc, Dan, Manisor, Monica, Pottecher, Julien, Meyer, Alain, Chamaraux-Tran, Thiên Nga, Le Bras, Anthony, Le Guen, Arnaud, Département de neuroradiologie diagnostique et thérapeutique [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Imagerie Adaptative Diagnostique et Interventionnelle (IADI), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), CHU Bordeaux [Bordeaux], Service de neurologie [CHRU Nancy], Centre d'investigation clinique plurithématique Pierre Drouin [Nancy] (CIC-P), Centre d'investigation clinique [Nancy] (CIC), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL)-Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), Défaillance Cardiovasculaire Aiguë et Chronique (DCAC), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), Centre hospitalier universitaire de Nantes (CHU Nantes), Neuroradiologie [Hôpital Gui de Chauliac], Hôpital Gui de Chauliac [CHU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), CHU Rothschild [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Service Neuroradiologie diagnostique et interventionnelle [Hôpital Foch], Hôpital Foch [Suresnes], Université de Versailles Saint-Quentin-en-Yvelines - UFR Sciences de la santé Simone Veil (UVSQ Santé), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Service de Neurologie [CHU Rennes], CHU Pontchaillou [Rennes], Service de Neuroradiologie [CHU de Bicêtre], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de neurologie [Le Kremlin Bicêtre], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Bicêtre, Service de Neurologie [CHU Caen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN), Départment de Neuroradiologie [CHU Caen], Service de Neuroradiologie interventionnelle [CHU Limoges], CHU Limoges, Service de Neurologie [CHU Limoges], CHU Pitié-Salpêtrière [AP-HP], Service de Neurologie [CH Saint-Anne], Centre Hospitalier Sainte Anne [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de neurologie [Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Département de Neuroradiologie [CHU Rouen], Normandie Université (NU)-Normandie Université (NU), Neurologie Vasculaire [Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Service Neuroradiologie Diagnostique et Thérapeutique [CHU Toulouse], Pôle imagerie médicale [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Service de radiologie [Vannes], Centre hospitalier Bretagne Atlantique (Morbihan) (CHBA), Service de Neurologie [Strasbourg], CHU Strasbourg-Hopital Civil, Département de Neuroradiologie [Strasbourg], Les Hôpitaux Universitaires de Strasbourg (HUS), Service de Neurologie [Brest], Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Service de Neuroradiologie [Brest], Neurologie - Côte Basque, Centre Hospitalier de la Côte Basque (CHCB), Aristotle University of Thessaloniki, Neuroimagerie: méthodes et applications (Empenn), Institut National de la Santé et de la Recherche Médicale (INSERM)-Inria Rennes – Bretagne Atlantique, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-SIGNAUX ET IMAGES NUMÉRIQUES, ROBOTIQUE (IRISA-D5), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), and Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)

Subjects
Male, medicine.medical_specialty, 2019-20 coronavirus outbreak, Coronavirus disease 2019 (COVID-19), Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), Embolism, Large vessel, Dissection (medical), Brain ischemia, Postoperative Complications, Risk Factors, Thromboembolism, medicine, Humans, Registries, Aged, Ischemic Stroke, Thrombectomy, Advanced and Specialized Nursing, business.industry, Incidence (epidemiology), Dissection, Incidence, Endovascular Procedures, Middle Aged, medicine.disease, Surgery, Cerebrovascular Disorders, Female, Neurology (clinical), Cardiology and Cardiovascular Medicine, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract

Background and Purpose: Procedural complications in thrombectomy for large vessel occlusions of the anterior circulation are not well described. We investigated the incidence, risk factors, and clinical implications of thrombectomy complications in daily clinical practice. Methods: We used data from the ongoing prospective multicenter observational Endovascular Treatment in Ischemic Stroke Registry in France. The present study is a retrospective analysis of 4029 stroke patients with anterior large vessel occlusions treated with thrombectomy between January 2015 and May 2020 in 18 centers. We systematically collected procedural data, incidence of embolic complications, perforations and dissections, clinical outcome at 90 days, and hemorrhagic complications. Results: Procedural complications occurred in 7.99% (95% CI, 7.17%–8.87%), and embolus to a new territory (ENT) was the most frequent (5.2%). Predictors of ENTs were terminal carotid/tandem occlusion (odds ratio [OR], 5 [95% CI, 2.03–12.31]; P P =0.006). ENTs were associated to worse clinical outcomes (90-day modified Rankin Scale score, 0–2; adjusted OR, 0.4 [95% CI, 0.25–0.63]; P P P =0.011). Perforations occurred in 1.69% (95% CI, 1.31%–2.13%). Predictors of perforations were terminal carotid/tandem occlusions (39.7% versus 27.6%; P =0.028). 40.7% of patients died at 90 days, and the overall rate of poor outcome was 74.6% in case of perforation. Dissections occurred in 1.46% (95% CI, 1.11%–1.88%) and were more common in younger patients (median age, 64.2 versus 70.2 years; P =0.002). Dissections did not affect the clinical outcome at 90 days. Besides dissection, complications were independent of the thrombectomy technique. Conclusions: Thrombectomy complication rate is not negligible, and ENTs were the most frequent. ENTs and perforations were associated with disability and mortality, and terminal carotid/tandem occlusions were a risk factor. Registration: URL: https://www.clinicaltrials.gov ; Unique identifier: NCT03776877.

Published
2021
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3. Absence of susceptibility vessel sign is associated with aspiration-resistant fibrin/platelet-rich thrombi.

Author

Darcourt, Jean, Garcia, Cédric, Phuong, Do M., Michelozzi, Caterina, Bellanger, Guillaume, Adam, Gilles, Roques, Margaux, Januel, Anne C., Tall, Philippe, Albucher, Jean F., Olivot, Jean M., Bonneville, Fabrice, Payrastre, Bernard, and Cognard, Christophe

Subjects
STROKE, ISCHEMIC stroke, LOGISTIC regression analysis, FIBRIN, THROMBECTOMY, THROMBOSIS
Abstract

Background: The composition of the thrombus influences its retrievability by mechanical thrombectomy. Purpose: Our study aimed to report on thrombi resistant to aspiration, regarding susceptibility vessel sign and histologic composition. Methods: This observational study was based on a prospective database of acute anterior circulation ischemic strokes treated by mechanical thrombectomy. Endovascular first-line strategy was aspiration and in case of failure, combined therapy-rescue was performed. The positivity of susceptibility vessel sign (SVSþ) or its negativity (SVS+) was assessed on T2* sequences. The thrombus composition was analyzed with hematoxylin eosin staining. Results: Histological analysis was performed on 102 clots. Thrombi with SVS+ were significantly richer in fibrin/platelets, p=0.04. Out of 210 mechanical thrombectomy, aspiration first pass strategy was performed in 131/210 (62%) patients. Combined therapy-rescue was needed in 37% of aspiration first pass strategy cases (n=131). Clots retrieved combined therapy-rescue were richer in fibrin/platelets 63.9% versus 50.8% for aspiration first pass strategy, p=0.03. Logistic regression analysis showed that fibrin/platelet-poor clots (<60%) were significantly more likely to be recanalized by aspiration first pass strategy compared to fibrin/platelet-rich clots (>60%) that were more likely recanalized by combined therapy-rescue after aspiration first pass strategy failure (OR=3.5; 95% CI=1.2-10.8; p=0.0054). Conclusions: Our results confirm that SVS-clots are rich in fibrin/platelets and suggest that these "white clots" are less likely to be retrieved by aspiration alone and more often require the use of combined therapy. [ABSTRACT FROM AUTHOR]

Published
2021
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