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Martins P, Sambhu K, Tarek M, Dolia J, Pabaney A, Grossberg J, Nogueira R, Haussen D. Validation of a model for outcome prediction after endovascular treatment for ischemic stroke. Interv Neuroradiol 2024:15910199241265134. [PMID: 39053025 DOI: 10.1177/15910199241265134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024] Open
Abstract
INTRODUCTION The recently developed MR-PREDICTS@24 h model showed excellent performance in the MR-CLEAN Registry cohort in patients presenting within 12 h from onset. However, its applicability to an U.S. population and to patients presenting beyond 12 h from last known normal are still undetermined. We aim to externally validate the MR-PREDICTS@24 h model in a new geographic setting and in the late window. METHODS In this retrospective analysis of a prospectively collected database from a comprehensive stroke center in the United States, we included patients with intracranial carotid artery or middle cerebral artery M1 or M2 segment occlusions who underwent endovascular therapy and applied the MR-PREDICTS@24 h formula to estimate the probabilities of functional outcome at day 90. The primary endpoint was the modified Rankin Scale (mRS) at 90 days. RESULTS We included 1246 patients, 879 in the early (<12 h) and 367 in the late (≥12 h) cohort. For both cohorts, calibration and discrimination of the model were accurate throughout mRS levels, with absolute differences between estimated and predicted proportions ranging from 1% to 5%. Calibration metrics and curve inspections showed good performance for estimating the probabilities of mRS ≤ 1 to mRS ≤ 5 for the early cohort. For the late cohort, predictions were reliable for the probabilities of mRS ≤ 1 to mRS ≤ 4. CONCLUSION The MR-PREDICTS@24 h was transferrable to a real-world U.S.-based cohort in the early window and showed consistently accurate predictions for patients presenting in the late window without need for updating.
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Affiliation(s)
- Pedro Martins
- Department of Neurology, Emory University, Atlanta, GA, USA
- Marcus Stroke & Neuroscience Center, Grady Memorial Hospital, Atlanta, GA, USA
| | - Krishna Sambhu
- Department of Neurology, Emory University, Atlanta, GA, USA
- Marcus Stroke & Neuroscience Center, Grady Memorial Hospital, Atlanta, GA, USA
| | - Mohamed Tarek
- Department of Neurology, Emory University, Atlanta, GA, USA
- Marcus Stroke & Neuroscience Center, Grady Memorial Hospital, Atlanta, GA, USA
| | - Jaydevsinh Dolia
- Department of Neurology, Emory University, Atlanta, GA, USA
- Marcus Stroke & Neuroscience Center, Grady Memorial Hospital, Atlanta, GA, USA
| | - Aqueel Pabaney
- Department of Neurology, Emory University, Atlanta, GA, USA
- Marcus Stroke & Neuroscience Center, Grady Memorial Hospital, Atlanta, GA, USA
| | - Jonathan Grossberg
- Department of Neurology, Emory University, Atlanta, GA, USA
- Marcus Stroke & Neuroscience Center, Grady Memorial Hospital, Atlanta, GA, USA
| | - Raul Nogueira
- Department of Neurology, Emory University, Atlanta, GA, USA
- Marcus Stroke & Neuroscience Center, Grady Memorial Hospital, Atlanta, GA, USA
- Department of Neurology, UPMC, Pittsburgh, PA, USA
| | - Diogo Haussen
- Department of Neurology, Emory University, Atlanta, GA, USA
- Marcus Stroke & Neuroscience Center, Grady Memorial Hospital, Atlanta, GA, USA
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Heitkamp C, Winkelmeier L, Flottmann F, Schell M, Kniep H, Broocks G, Thaler C, Steffen P, Thomalla G, Fiehler J, Faizy TD. Thrombectomy patients with minor stroke: factors of early neurological deterioration. J Neurointerv Surg 2024:jnis-2024-021930. [PMID: 38991731 DOI: 10.1136/jnis-2024-021930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 06/15/2024] [Indexed: 07/13/2024]
Abstract
BACKGROUND A sizeable proportion of stroke patients with large vessel occlusion present with minor neurological deficits. Whether mechanical thrombectomy (MT) is beneficial in these patients is controversial. We aimed to investigate factors of early neurological deterioration (END) in thrombectomy patients with minor stroke and hypothesized that END is linked to unfavorable functional outcomes. METHODS Multicenter cohort study screening all patients prospectively enrolled in the German Stroke Registry-Endovascular Treatment (n=13 082) between 2015 and 2021. Patients who underwent MT for anterior circulation vessel occlusion with baseline National Institutes of Health Stroke Scale (NIHSS) score of <6 were included. END was defined as an increase in NIHSS score of ≥4 within the first 24 hours after MT. Multivariable regression analyses were performed to investigate factors associated with END and its association with unfavorable functional outcomes 90 days after treatment (modified Rankin Scale (mRS) score ≥2). RESULTS Among 817 patients included, 24% exhibited END and 48% had unfavorable functional outcomes. Prestroke mRS (adjusted odds ratio (aOR) [95% CI] 1.42 [1.13 to 1.78]), baseline NIHSS (aOR [95% CI] 0.83 [0.73 to 0.94]), time from admission to groin puncture (aOR [95% CI] 1.04 [1.02 to 1.07]), general anesthesia (aOR [95% CI] 1.68 [1.08 to 2.63]), number of passes (aOR [95% CI] 1.15 [1.03 to 1.29]), adverse events during treatment (aOR [95% CI] 1.89 [1.19 to 3.01]), successful recanalization (aOR [95% CI] 0.29 [0.17 to 0.50]), and intracranial hemorrhage on follow-up imaging (aOR [95% CI] 3.40 [1.90 to 6.07]) were independently associated with END. END was independently linked to unfavorable functional outcomes (aOR [95% CI] 7.51 [4.57 to 12.34]). CONCLUSIONS Almost a quarter of thrombectomy patients with minor stroke developed END. These patients had twice the odds of experiencing unfavorable functional outcomes.
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Affiliation(s)
- Christian Heitkamp
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Laurens Winkelmeier
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Fabian Flottmann
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Maximilian Schell
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Helge Kniep
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gabriel Broocks
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Neuroradiology, HELIOS Medical Center, Campus of MSH Medical School Hamburg, Schwerin, Germany
| | - Christian Thaler
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Paul Steffen
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Goetz Thomalla
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jens Fiehler
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tobias D Faizy
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Neuroradiology, University Hospital Muenster, Muenster, Germany
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Miller MM, Wideman B, Khan M, Henninger N. Hypoperfusion Intensity Ratio Is Associated with Early Neurologic Deficit Severity and Deterioration after Mechanical Thrombectomy in Large-Vessel Occlusion Ischemic Stroke. AJNR Am J Neuroradiol 2024; 45:879-886. [PMID: 38816020 DOI: 10.3174/ajnr.a8234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/09/2024] [Indexed: 06/01/2024]
Abstract
BACKGROUND AND PURPOSE The hypoperfusion intensity ratio is a surrogate marker for collateral status and a predictor of infarct growth, malignant cerebral edema, and hemorrhagic transformation. Its utility to predict a poor NIHSS score and early neurologic deterioration after mechanical thrombectomy for large vessel (LVO) versus distal and medium vessel occlusions (DMVO) has not been investigated. The objective of this study was to determine whether the higher hypoperfusion intensity ratio is associated with a worse NIHSS score at 24 hours post-mechanical thrombectomy and early neurologic deterioration in LVO versus DMVO acute ischemic stroke. MATERIALS AND METHODS This was a retrospective study of 231 patients with acute ischemic stroke with LVO or DMVO amenable for mechanical thrombectomy and available CTP for hypoperfusion intensity ratio assessment pre-mechanical thrombectomy. Clinical and imaging characteristics were abstracted from the medical records. The primary outcome was the NIHSS score at 24 hours post-mechanical thrombectomy. The secondary outcome was early neurologic deterioration, defined as a >4-point increase in the NIHSS score between the initial assessment and 24 hours post-mechanical thrombectomy. All analyses were first conducted in the entire cohort and then separately for the LVO versus DMVO groups. RESULTS The optimal hypoperfusion intensity ratio threshold to detect early neurologic deterioration was 0.54. A hypoperfusion intensity ratio ≥ 0.54 was more frequently present in LVO versus DMVO (n = 37 [77.1%] versus n = 11 [22.9%]; P < .001). On multivariable linear regression, the hypoperfusion intensity ratio ≥ 0.54 was independently associated with a worse NIHSS score at 24 hours post-mechanical thrombectomy in the entire cohort (β = 0.163; P = .002) and the LVO group (β = 0.210; P = .005), but not in the DMVO group. The early neurologic deterioration occurred in 26 (11.3%) subjects. On multivariable logistic regression, there was no association of the hypoperfusion intensity ratio ≥ 0.54 with early neurologic deterioration in the entire cohort. However, when analyzed separately, a hypoperfusion intensity ratio ≥ 0.54 significantly increased the odds of early neurologic deterioration in subjects with LVO (OR = 5.263; 95% CI, 1.170-23.674; P = .030) but not in the DMVO group. CONCLUSIONS The hypoperfusion intensity ratio ≥ 0.54 was independently associated with a worse 24-hour post-mechanical thrombectomy NIHSS score and early neurologic deterioration in LVO, but not in DMVO acute ischemic stroke. Pending confirmation in future, prospective studies assessing the hypoperfusion intensity ratio may help identify patients at risk of secondary decline to improve peri-thrombectomy care and clinical decision-making.
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Affiliation(s)
- Małgorzata M Miller
- From the Department of Neurosciences (M.M.M., B.W.), Corewell Health West, Grand Rapids, Michigan
- College of Human Medicine (M.M.M.), Michigan State University, Grand Rapids, Michigan
| | - Brian Wideman
- From the Department of Neurosciences (M.M.M., B.W.), Corewell Health West, Grand Rapids, Michigan
| | - Muhib Khan
- Department of Neurology (M.K.), Mayo Clinic, Rochester, Minnesota
| | - Nils Henninger
- Department of Neurology (N.H.), University of Massachusetts, Chan Medical School Worcester, Massachusetts
- Department of Psychiatry (N.H.), University of Massachusetts, Chan Medical School Worcester, Massachusetts
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Lai Y, Diana F, Mofatteh M, Nguyen TN, Jou E, Zhou S, Sun H, He J, Yan W, Chen Y, Feng M, Chen J, Ma J, Li X, Meng H, Abdalkader M, Chen Y. Predictors of failure of early neurological improvement in early time window following endovascular thrombectomy: a multi-center study. Front Neurol 2023; 14:1227825. [PMID: 37780716 PMCID: PMC10538528 DOI: 10.3389/fneur.2023.1227825] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/23/2023] [Indexed: 10/03/2023] Open
Abstract
Background and objective Endovascular thrombectomy (EVT) has become the gold standard in the treatment of acute stroke patients. However, not all patients respond well to this treatment despite successful attempts. In this study, we aimed to identify variables associated with the failure of improvements following EVT. Methods We retrospectively analyzed prospectively collected data of 292 ischemic stroke patients with large vessel occlusion who underwent EVT at three academic stroke centers in China from January 2019 to February 2022. All patients were above 18 years old and had symptoms onset ≤6 h. A decrease of more than 4 points on the National Institute of Health Stroke Scale (NIHSS) after 24 h compared with admission or an NIHSS of 0 or 1 after 24 h was defined as early neurological improvement (ENI), whereas a lack of such improvement in the NIHSS was defined as a failure of early neurological improvement (FENI). A favorable outcome was defined as a modified Rankin scale (mRS) score of 0-2 after 90 days. Results A total of 183 patients were included in the final analyses, 126 of whom had FENI, while 57 had ENI. Favorable outcomes occurred in 80.7% of patients in the ENI group, in contrast to only 22.2% in the FENI group (p < 0.001). Mortality was 7.0% in the ENI group in comparison to 42.1% in the FENI group (p < 0.001). The multiple logistic regression model showed that diabetes mellitus [OR (95% CI), 2.985 (1.070-8.324), p = 0.037], pre-stroke mRS [OR (95% CI), 6.221 (1.421-27.248), p = 0.015], last known well to puncture time [OR (95% CI), 1.010 (1.003-1.016), p = 0.002], modified thrombolysis in cerebral infarction = 3 [OR (95% CI), 0.291 (0.122-0.692), p = 0.005], and number of mechanical thrombectomy passes [OR (95% CI), 1.582 (1.087-2.302), p = 0.017] were the predictors of FENI. Conclusion Diabetes mellitus history, pre-stroke mRS, longer last known well-to-puncture time, lack of modified thrombolysis in cerebral infarction = 3, and the number of mechanical thrombectomy passes are the predictors of FENI. Future large-scale studies are required to validate these findings.
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Affiliation(s)
- Yuzheng Lai
- Department of Neurology, Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine (Nanhai District Hospital of Traditional Chinese Medicine of Foshan City), Foshan, China
| | - Francesco Diana
- Department of Neuroradiology, A.O.U. San Giovanni di Dio e Ruggi d’Aragona, University of Salerno, Salerno, Italy
| | - Mohammad Mofatteh
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast, United Kingdom
| | - Thanh N. Nguyen
- Department of Radiology, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, United States
| | - Eric Jou
- School of Clinical Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Sijie Zhou
- Department of Surgery of Cerebrovascular Diseases, First People’s Hospital of Foshan, Foshan, China
| | - Hao Sun
- Department of Neurology, Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine (Nanhai District Hospital of Traditional Chinese Medicine of Foshan City), Foshan, China
| | - Jianfeng He
- Department of Neurology, Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine (Nanhai District Hospital of Traditional Chinese Medicine of Foshan City), Foshan, China
| | - Wenshan Yan
- Department of Neurology, Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine (Nanhai District Hospital of Traditional Chinese Medicine of Foshan City), Foshan, China
| | - Yiying Chen
- Department of Neurology, Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine (Nanhai District Hospital of Traditional Chinese Medicine of Foshan City), Foshan, China
| | - Mingzhu Feng
- Department of Neurology and Advanced National Stroke Center, Foshan Sanshui District People’s Hospital, Foshan, China
| | - Junbin Chen
- Department of Neurology, The Affiliated Yuebei People’s Hospital of Shantou University Medical College, Shaoguan, China
| | - Jicai Ma
- Department of Neurology, The Affiliated Yuebei People’s Hospital of Shantou University Medical College, Shaoguan, China
| | - Xinyuan Li
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Heng Meng
- Department of Neurology, The First Affiliated Hospital of Jinan University, Clinical Neuroscience Institute of Jinan University, Guangzhou, China
| | - Mohamad Abdalkader
- Department of Radiology, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, United States
| | - Yimin Chen
- Department of Neurology and Advanced National Stroke Center, Foshan Sanshui District People’s Hospital, Foshan, China
- Neuro International Collaboration (NIC), Foshan, China
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Kobeissi H, Ghozy S, Seymour TJ, Bilgin C, Liu M, Kadirvel R, Brinjikji W, Rabinstein AA, Kallmes DF. Patient characteristics associated with delayed neurological improvement following acute ischemic stroke: A systematic review and meta-analysis. Interv Neuroradiol 2023:15910199221149787. [PMID: 36597678 DOI: 10.1177/15910199221149787] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Delayed neurological improvement (DNI) is a phenomenon that involves patient improvement in the absence of early neurological change following treatment for acute ischemic stroke. The patient characteristics associated with this condition are largely unexplored. METHODS Following the PRISMA guidelines, a systematic review of the English language literature was conducted using PubMed, Embase, Web of science, and Scopus. We calculated pooled odds ratios (ORs), mean differences (MDs), and their corresponding 95% confidence intervals (CIs) to test the association between patient characteristics and achievement of DNI. RESULTS Seven studies, with 3266 patients, were included in our analysis. All studies reported a different definition of DNI, with five studies focusing on rates of good functional outcome at 90 days post-treatment in the absence of early neurological improvement. Use of intravenous thrombolytics was associated with increased rates of DNI (OR 1.96, 95% CI 1.28 to 3.00; p = 0.002). Atrial fibrillation was associated with decreased rates of DNI (OR 0.69, 95% CI 0.57 to 0.82; p < 0.001), as was hypertension (OR 0.66, 95% CI 0.53 to 0.83, p < 0.001), and diabetes mellitus (OR 0.71, 95% CI 0.56 to 0.90; p = 0.005). On average, patients who achieved DNI were 6.30 years younger than their non-DNI counterparts (MD -6.30, 95% CI -9.19 to -3.41; p < 0.001). There were modest associations between male sex and DNI (OR 1.36, 95% CI 1.01 to 1.74, p = 0.042), and smoking and DNI (OR 1.28, 95% CI 1.03 to 1.59, p = 0.027). CONCLUSIONS DNI is a phenomenon that is not presently well understood. Lack of uniformity among definitions of DNI hinders efforts to explore DNI and the factors associated with its occurrence. Future studies should work to establish a consensus definition of DNI to determine its causes and significance more accurately.
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Affiliation(s)
- Hassan Kobeissi
- Department of Radiology, 6915Mayo Clinic, Rochester, MN, USA
- College of Medicine, 5649Central Michigan University, Mount Pleasant, MI, USA
| | - Sherief Ghozy
- Department of Radiology, 6915Mayo Clinic, Rochester, MN, USA
| | | | - Cem Bilgin
- Department of Radiology, 6915Mayo Clinic, Rochester, MN, USA
| | - Michael Liu
- Department of Neurology, 6915Mayo Clinic, Rochester, MN, USA
| | - Ramanathan Kadirvel
- Department of Radiology, 6915Mayo Clinic, Rochester, MN, USA
- Department of Neurologic Surgery, 6915Mayo Clinic, Rochester, MN, USA
| | | | | | - David F Kallmes
- Department of Radiology, 6915Mayo Clinic, Rochester, MN, USA
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Hendrix P, Schirmer CM. Relative versus absolute early neurological improvement after mechanical thrombectomy for large vessel occlusion stroke - hot or not? J Neurointerv Surg 2022; 15:619-620. [PMID: 35738879 DOI: 10.1136/neurintsurg-2022-019235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 06/06/2022] [Indexed: 11/03/2022]
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