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Novotny V, Kvistad CE, Naess H, Logallo N, Fromm A, Khanevski AN, Thomassen L. Tenecteplase, 0.4 mg/kg, in Moderate and Severe Acute Ischemic Stroke: A Pooled Analysis of NOR-TEST and NOR-TEST 2A. J Am Heart Assoc 2023; 12:e030320. [PMID: 37830342 PMCID: PMC10757511 DOI: 10.1161/jaha.123.030320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/18/2023] [Indexed: 10/14/2023]
Abstract
Background The optimal dose of tenecteplase in acute ischemic stroke remains to be defined. We present a pooled analysis of the 2 NOR-TESTs (Norwegian Tenecteplase Stroke Trials) exploring the efficacy and safety of tenecteplase, 0.4 mg/kg. Methods and Results We retrospectively reviewed 2 PROBE (Prospective Randomized Open, Blinded End-point) trials, NOR-TEST and NOR-TEST 2A. Patients were randomized to either tenecteplase, 0.4 mg/kg, or alteplase, 0.9 mg/kg. The primary end point was favorable functional outcome at 3 months (modified Rankin Scale score, 0-1) or return to baseline if prestroke modified Rankin Scale score was 2. Secondary end points included favorable functional and clinical outcome and safety data. The pooled analysis includes patients with National Institutes of Health Stroke Scale score ≥6 from both trials and an additional post hoc analysis of patients with National Institutes of Health Stroke Scale score ≤5 from NOR-TEST. The per-protocol analysis contains 483 patients, of whom 235 were assigned to tenecteplase and 248 were assigned to alteplase. In per-protocol analysis, functional outcome was better in the alteplase arm with cutoff modified Rankin Scale score of 2 (odds ratio [OR], 0.52 [95% CI, 0.33-0.80]; P=0.003) and expressed by ordinal shift analysis (OR, 1.64 [95% CI, 1.17-2.28]; P=0.004). Mortality at 3 months was higher in the tenecteplase arm (OR, 2.48 [95% CI, 1.20-5.10]; P=0.01). Mortality and intracranial hemorrhage rates were higher in the severe stroke group randomized to tenecteplase, whereas these rates were similar for alteplase and tenecteplase in moderate and mild stroke. Conclusions Tenecteplase, 0.4 mg/kg, is unsafe in moderate and severe stroke, and the risk of death and intracranial hemorrhage probably increases with stroke severity. A lower tenecteplase dose should be tested in future trials. Registration URL: https://www.clinicaltrials.gov; Unique identifiers: NCT01949948, NCT03854500.
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Affiliation(s)
- Vojtech Novotny
- Department of NeurologyHaukeland University HospitalBergenNorway
| | - Christopher Elnan Kvistad
- Department of NeurologyHaukeland University HospitalBergenNorway
- Department of Clinical MedicineUniversity of BergenBergenNorway
| | - Halvor Naess
- Department of NeurologyHaukeland University HospitalBergenNorway
- Centre for Age‐Related MedicineStavanger University HospitalStavangerNorway
| | - Nicola Logallo
- Department of NeurosurgeryHaukeland University HospitalBergenNorway
| | - Annette Fromm
- Department of NeurologyHaukeland University HospitalBergenNorway
| | | | - Lars Thomassen
- Department of NeurologyHaukeland University HospitalBergenNorway
- Department of Clinical MedicineUniversity of BergenBergenNorway
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Abuelazm M, Seri AR, Awad AK, Ahmad U, Mahmoud A, Albazee E, Kambalapalli S, Abdelazeem B. The efficacy and safety of tenecteplase versus alteplase for acute ischemic stroke: an updated systematic review, pairwise, and network meta-analysis of randomized controlled trials. J Thromb Thrombolysis 2023; 55:322-338. [PMID: 36449231 PMCID: PMC10011306 DOI: 10.1007/s11239-022-02730-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/30/2022] [Indexed: 12/05/2022]
Abstract
Tenecteplase (TNK) is a promising candidate to replace alteplase as the standard of care for acute ischemic stroke (AIS); however, the optimal dosage is still to be investigated. Therefore, we aim to evaluate the safety and efficacy of TNK versus alteplase and to investigate the optimal TNK dosage. A systematic review, pairwise, and network meta-analysis synthesizing randomized controlled trials (RCTs) from WOS, SCOPUS, EMBASE, and PubMed until July 26th, 2022. We used the risk ratio (RR) for dichotomous outcomes presented with the corresponding 95% confidence interval (CI). We registered our protocol in PROSPERO with ID: CRD42022352038. Nine RCTs with a total of 3,707 patients were included. TNK significantly led to complete recanalization (RR: 1.27 with 95% CI [1.02, 1.57], P = 0.03); however, we found no difference regarding early neurological improvement (RR: 1.07 with 95% CI [0.94, 1.21], P = 0.33) and excellent neurological recovery (RR: 1.03 with 95% CI [0.96, 1.10], P = 0.42). Also, TNK was similar to alteplase regarding mortality (RR: 0.99 with 95% CI [0.82, 1.18], P = 0.88), intracranial haemorrhage (RR: 1.00 with 95% CI [0.85, 1.18], P = 0.99), and parenchymal hematoma (RR: 1.13 with 95% CI [0.83, 1.54], P = 0.44). TNK in the dose of 0.25 mg is a viable candidate to displace alteplase as the standard of care in patients with an AIS within 4.5 h of presentation due to its better rate of early neurological recovery and non-inferiority in terms of safety outcomes. However, the evidence regarding TNK's role in AIS presenting after 4.5 h from symptoms onset, wake-up stroke, and minor stroke/TIA is still lacking, necessitating further double-blinded pragmatic RCTs in this regard.
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Affiliation(s)
| | - Amith Reddy Seri
- Department of Internal Medicine, McLaren Health Care, Flint, MI USA
- Department of Internal Medicine, Michigan State University, East Lansing, MI USA
| | - Ahmed K. Awad
- Faculty of Medicine, Ain-Shams University, Cairo, Egypt
| | | | | | - Ebraheem Albazee
- Kuwait Institute for Medical Specializations (KIMS), Kuwait City, Kuwait
| | - Soumya Kambalapalli
- Department of Internal Medicine, McLaren Health Care, Flint, MI USA
- Department of Internal Medicine, Michigan State University, East Lansing, MI USA
| | - Basel Abdelazeem
- Department of Internal Medicine, McLaren Health Care, Flint, MI USA
- Department of Internal Medicine, Michigan State University, East Lansing, MI USA
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Høllesli LJ, Ajmi SC, Kurz MW, Tysland TB, Hagir M, Dalen I, Qvindesland SA, Ersdal H, Kurz KD. Simulation-based team-training in acute stroke: Is it safe to speed up? Brain Behav 2022; 12:e2814. [PMID: 36416494 PMCID: PMC9759129 DOI: 10.1002/brb3.2814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 10/01/2022] [Accepted: 10/18/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND In acute ischemic stroke (AIS), rapid treatment with intravenous thrombolysis (IVT) is crucial for good clinical outcome. Weekly simulation-based team-training of the stroke treatment team was implemented, resulting in faster treatment times. The aim of this study was to assess whether this time reduction led to a higher proportion of stroke mimics (SMs) among patients who received IVT for presumed AIS, and whether these SM patients were harmed by intracranial hemorrhage (ICH). METHODS All suspected AIS patients treated with IVT between January 1, 2015 and December 31, 2020 were prospectively registered. In 2017, weekly in situ simulation-based team-training involving the whole stroke treatment team was introduced. To analyze possible unintended effects of simulation training, the proportion of SMs among patients who received IVT for presumed AIS were identified by clinical and radiological evaluation. Additionally, we identified the extent of symptomatic ICH (sICH) in IVT-treated SM patients. RESULTS From 2015 to 2020, 959 patients were treated with IVT for symptoms of AIS. After introduction of simulation training, the proportion of patients treated with IVT who were later diagnosed as SMs increased significantly (15.9% vs. 24.4%, p = .003). There were no ICH complications in the SM patients treated before, whereas two SM patients suffered from asymptomatic ICH after introduction of simulation training (p = 1.0). When subgrouping SMs into prespecified categories, only the group diagnosed with peripheral vertigo increased significantly (2.5% vs. 8.6%, p < .001). CONCLUSIONS Simulation training of the acute stroke treatment team was associated with an increase in the proportion of patients treated with IVT for a suspected AIS who were later diagnosed with peripheral vertigo. The proportion of other SM groups among IVT-treated patients did not change significantly. No sICH was detected in IVT-treated SM patients.
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Affiliation(s)
- Liv Jorunn Høllesli
- Stavanger Medical Imaging Laboratory (SMIL), Department of Radiology, Stavanger University Hospital, Stavanger, Norway.,Department of Electrical Engineering and Computer Science, University of Stavanger, Stavanger, Norway
| | - Soffien Chadli Ajmi
- Neurology Research Group, Department of Neurology, Stavanger University Hospital, Stavanger, Norway.,Department of Quality and Health Technology, University of Stavanger, Stavanger, Norway
| | - Martin W Kurz
- Neurology Research Group, Department of Neurology, Stavanger University Hospital, Stavanger, Norway.,Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Thomas Bailey Tysland
- Neurology Research Group, Department of Neurology, Stavanger University Hospital, Stavanger, Norway
| | - Morten Hagir
- Department of Radiology, Hospital of Southern Norway Kristiansand, Kristiansand, Norway
| | - Ingvild Dalen
- Department of Research, Section of Biostatistics, Stavanger University Hospital, Stavanger, Norway
| | - Sigrun Anna Qvindesland
- Department of Research, Simulation Section, Stavanger University Hospital, Stavanger, Norway
| | - Hege Ersdal
- Critical Care and Anesthesiology Research Group, Stavanger University Hospital, Stavanger, Norway.,Faculty of Health Sciences, University of Stavanger, Stavanger, Norway
| | - Kathinka D Kurz
- Stavanger Medical Imaging Laboratory (SMIL), Department of Radiology, Stavanger University Hospital, Stavanger, Norway.,Department of Electrical Engineering and Computer Science, University of Stavanger, Stavanger, Norway
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Affiliation(s)
- Else Charlotte Sandset
- Department of Neurology, Stroke Unit, Oslo University Hospital, Oslo, Norway; The Norwegian Air Ambulance Foundation, 0424 Oslo, Norway.
| | - Georgios Tsivgoulis
- Second Department of Neurology, National and Kapodistrian University of Athens, "Attikon" University Hospital, Athens, Greece; Department of Neurology, University of Tennessee Health Science Center, Memphis, TN, USA
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Lee VH, Howell R, Yadav R, Heaton S, Wiles KL, Lakhani S. Thrombolysis of stroke mimics via telestroke. Stroke Vasc Neurol 2022; 7:267-270. [PMID: 35105730 PMCID: PMC9240458 DOI: 10.1136/svn-2020-000776] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 12/22/2021] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND The rate of intravenous tissue plasminogen activator (IVtPA) administered to stroke mimics (SM) occurs in 24%-44% of telestroke series. METHODS We reviewed 270 suspected acute ischaemic stroke (AIS) patients who were evaluated by telestroke and received IVtPA from 1 July 2016 to 30 September 2017 at our academic comprehensive stroke centre. RESULTS Among 270 AIS patients who received IVtPA via telestroke, 64 (23.7%) were diagnosed with SM. Compared with patients who had a stroke, the SM group was younger (mean age 56.4 vs 68.2, p<0.0001), more likely to be female (60.9% vs 45.6%, p=0.0324) and had longer door-to-needle times (85.3 vs 69.9, p=0.0008). The most common SM diagnoses were migraine 26 (40.6%), conversion disorder 12 (18.8%), encephalopathy 7 (10.9%) and unmasking (9.4%). Among the SM, migraine and conversion disorder were younger compared with the other subgroups (p<0.001). Functional exam elements were noted more frequently in conversion disorder (66.7%) and migraine (34.6%), but rare in other diagnoses (p=0.006). Among the SM, 23 (35.9%) had a history of a prior similar episodes, and 15 (23.4%) had a history of more than 5 spells. CONCLUSIONS In our telestroke programme, 23.7% of those administered thrombolysis had a final diagnosis of SM.
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Affiliation(s)
- Vivien H Lee
- Neurology, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Ravyn Howell
- Neurology, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Randheer Yadav
- Neurology, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Sharon Heaton
- Neurology, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Karen L Wiles
- Neurology, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Sushil Lakhani
- Neurology, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
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Kvistad CE, Næss H, Helleberg BH, Idicula T, Hagberg G, Nordby LM, Jenssen KN, Tobro H, Rörholt DM, Kaur K, Eltoft A, Evensen K, Haasz J, Singaravel G, Fromm A, Thomassen L. Tenecteplase versus alteplase for the management of acute ischaemic stroke in Norway (NOR-TEST 2, part A): a phase 3, randomised, open-label, blinded endpoint, non-inferiority trial. Lancet Neurol 2022; 21:511-519. [DOI: 10.1016/s1474-4422(22)00124-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/14/2022] [Accepted: 03/17/2022] [Indexed: 12/18/2022]
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Pre-hospital transdermal glyceryl trinitrate in patients with stroke mimics: data from the RIGHT-2 randomised-controlled ambulance trial. BMC Emerg Med 2022; 22:2. [PMID: 35012462 PMCID: PMC8744321 DOI: 10.1186/s12873-021-00560-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 11/28/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Prehospital stroke trials will inevitably recruit patients with non-stroke conditions, so called stroke mimics. We undertook a pre-specified analysis to determine outcomes in patients with mimics in the second Rapid Intervention with Glyceryl trinitrate in Hypertensive stroke Trial (RIGHT-2). METHODS RIGHT-2 was a prospective, multicentre, paramedic-delivered, ambulance-based, sham-controlled, participant-and outcome-blinded, randomised-controlled trial of transdermal glyceryl trinitrate (GTN) in adults with ultra-acute presumed stroke in the UK. Final diagnosis (intracerebral haemorrhage, ischaemic stroke, transient ischaemic attack, mimic) was determined by the hospital investigator. This pre-specified subgroup analysis assessed the safety and efficacy of transdermal GTN (5 mg daily for 4 days) versus sham patch among stroke mimic patients. The primary outcome was the 7-level modified Rankin Scale (mRS) at 90 days. RESULTS Among 1149 participants in RIGHT-2, 297 (26%) had a final diagnosis of mimic (GTN 134, sham 163). The mimic group were younger, mean age 67 (SD: 18) vs 75 (SD: 13) years, had a longer interval from symptom onset to randomisation, median 75 [95% CI: 47,126] vs 70 [95% CI:45,108] minutes, less atrial fibrillation and a lower systolic blood pressure and Face-Arm-Speech-Time tool score than the stroke group. The three most common mimic diagnoses were seizure (17%), migraine or primary headache disorder (17%) and functional disorders (14%). At 90 days, the GTN group had a better mRS score as compared to the sham group (adjusted common odds ratio 0.54; 95% confidence intervals 0.34, 0.85; p = 0.008), a difference that persisted at 365 days. There was no difference in the proportion of patients who died in hospital, were discharged to a residential care facility, or suffered a serious adverse event. CONCLUSIONS One-quarter of patients suspected by paramedics to have an ultra-acute stroke were subsequently diagnosed with a non-stroke condition. GTN was associated with unexplained improved functional outcome observed at 90 days and one year, a finding that may represent an undetected baseline imbalance, chance, or real efficacy. GTN was not associated with harm. TRIAL REGISTRATION This trial is registered with International Standard Randomised Controlled Trials Number ISRCTN 26986053 .
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Li G, Wang C, Wang S, Xiong Y, Zhao X. Tenecteplase in Ischemic Stroke: Challenge and Opportunity. Neuropsychiatr Dis Treat 2022; 18:1013-1026. [PMID: 35586365 PMCID: PMC9109727 DOI: 10.2147/ndt.s360967] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 04/15/2022] [Indexed: 11/30/2022] Open
Abstract
PURPOSE OF REVIEW Intravenous thrombolysis is the first-line therapy for ischemic stroke, and alteplase has been used as an intravenous thrombolysis drug for over 20 years. However, considering its low rate of recanalization and risk of intracerebral hemorrhage, alteplase may not be the optimal thrombolytic drug of choice for ischemic stroke. Tenecteplase (TNK) is a genetically engineered, mutant, tissue plasminogen activator that is a potential substitute to alteplase in ischemic stroke. The pharmacokinetic advantages of TNK include greater fibrin selectivity than alteplase and prolonged half-life time. In this review, we have summarized the clinical trials of TNK in ischemic stroke. RECENT FINDINGS Clinical trials showed a higher recanalization rate of TNK over alteplase without increasing the rate of intracerebral hemorrhage. However, not all clinical trials showed superiority of TNK over alteplase in functional outcomes and early neurological improvement. TNK was superior to alteplase in terms of recanalization in patients who fulfilled the imaging mismatch criteria and in those planning to undergo mechanical thrombectomy. SUMMARY TNK has the potential to substitute alteplase for ischemic stroke therapy. Future TNK clinical trials that target functional outcomes are warranted.
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Affiliation(s)
- Guangshuo Li
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Chuanying Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Shang Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, People's Republic of China.,China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China
| | - Yunyun Xiong
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, People's Republic of China.,China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China.,Chinese Institute of Brain Research, Beijing, People's Republic of China
| | - Xingquan Zhao
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, People's Republic of China.,China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China
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Pohl M, Hesszenberger D, Kapus K, Meszaros J, Feher A, Varadi I, Pusch G, Fejes E, Tibold A, Feher G. Ischemic stroke mimics: A comprehensive review. J Clin Neurosci 2021; 93:174-182. [PMID: 34656244 DOI: 10.1016/j.jocn.2021.09.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/01/2021] [Accepted: 09/12/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND Ischemic stroke is the leading cause of disability and one of the leading causes of death. Ischemic stroke mimics (SMs) can account for a noteble number of diagnosed acute strokes and even can be thrombolyzed. METHODS The aim of our comprehensive review was to summarize the findings of different studies focusing on the prevalence, type, risk factors, presenting symptoms, and outcome of SMs in stroke/thrombolysis situations. RESULTS Overall, 61 studies were selected with 62.664 participants. Ischemic stroke mimic rate was 24.8% (15044/60703). Most common types included peripheral vestibular dysfunction in 23.2%, toxic/metabolic in 13.2%, seizure in 13%, functional disorder in 9.7% and migraine in 7.76%. Ischemic stroke mimic have less vascular risk factors, younger age, female predominance, lower (nearly normal) blood pressure, no or less severe symptoms compared to ischemic stroke patients (p < 0.05 in all cases). 61.7% of ischemic stroke patients were thrombolysed vs. 26.3% among SMs (p < 0.001). (p < 0.001). Overall intracranial hemorrhage was reported in 9.4% of stroke vs. 0.7% in SM patients (p < 0.001). Death occurred in 11.3% of stroke vs 1.9% of SM patients (p < 0.001). Excellent outcome was (mRS 0-1) was reported in 41.8% ischemic stroke patients vs. 68.9% SMs (p < 0.001). Apart from HINTS manouvre or Hoover sign there is no specific method in the identification of mimics. MRI DWI or perfusion imaging have a role in the setup of differential diagnosis, but merit further investigation. CONCLUSION Our article is among the first complex reviews focusing on ischemic stroke mimics. Although it underscores the safety of thrombolysis in this situation, but also draws attention to the need of patient evaluation by physicians experienced in the diagnosis of both ischemic stroke and SMs, especially in vertigo, headache, seizure and conversional disorders.
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Affiliation(s)
- Marietta Pohl
- Centre for Occupational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | | | - Krisztian Kapus
- Centre for Occupational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Janos Meszaros
- Centre for Occupational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | | | - Imre Varadi
- Centre for Occupational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | | | | | - Antal Tibold
- Centre for Occupational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Gergely Feher
- Centre for Occupational Medicine, Medical School, University of Pécs, Pécs, Hungary; Neurology Outpatient Clinic, EÜ-MED KFT, Komló, Hungary.
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10
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Kleindorfer DO, Towfighi A, Chaturvedi S, Cockroft KM, Gutierrez J, Lombardi-Hill D, Kamel H, Kernan WN, Kittner SJ, Leira EC, Lennon O, Meschia JF, Nguyen TN, Pollak PM, Santangeli P, Sharrief AZ, Smith SC, Turan TN, Williams LS. 2021 Guideline for the Prevention of Stroke in Patients With Stroke and Transient Ischemic Attack: A Guideline From the American Heart Association/American Stroke Association. Stroke 2021; 52:e364-e467. [PMID: 34024117 DOI: 10.1161/str.0000000000000375] [Citation(s) in RCA: 1214] [Impact Index Per Article: 404.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Tu TM, Tan GZ, Saffari SE, Wee CK, Chee DJMS, Tan C, Lim HC. External validation of stroke mimic prediction scales in the emergency department. BMC Neurol 2020; 20:269. [PMID: 32635897 PMCID: PMC7339435 DOI: 10.1186/s12883-020-01846-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 06/28/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Acute ischemic stroke is a time-sensitive emergency where accurate diagnosis is required promptly. Due to time pressures, stroke mimics who present with similar signs and symptoms as acute ischemic stroke, pose a diagnostic challenge to the emergency physician. With limited access to investigative tools, clinical prediction, tools based only on clinical features, may be useful to identify stroke mimics. We aim to externally validate the performance of 4 stroke mimic prediction scales, and derive a novel decision tree, to improve identification of stroke mimics. METHODS We performed a retrospective cross-sectional study at a primary stroke centre, served by a telestroke hub. We included consecutive patients who were administered intravenous thrombolysis for suspected acute ischemic stroke from January 2015 to October 2017. Four stroke mimic prediction tools (FABS, simplified FABS, Telestroke Mimic Score and Khan Score) were rated simultaneously, using only clinical information prior to administration of thrombolysis. The final diagnosis was ascertained by an independent stroke neurologist. Area under receiver operating curve (AUROC) analysis was performed. A classification tree analysis was also conducted using variables which were found to be significant in the univariate analysis. RESULTS Telestroke Mimic Score had the highest discrimination for stroke mimics among the 4 scores tested (AUROC = 0.75, 95% CI = 0.63-0.87). However, all 4 scores performed similarly (DeLong p > 0.05). Telestroke Mimic Score had the highest sensitivity (91.3%), while Khan score had the highest specificity (88.2%). All 4 scores had high positive predictive value (88.1 to 97.5%) and low negative predictive values (4.7 to 32.3%). A novel decision tree, using only age, presence of migraine and psychiatric history, had a higher prediction performance (AUROC = 0.80). CONCLUSION Four tested stroke mimic prediction scales performed similarly to identify stroke mimics in the emergency setting. A novel decision tree may improve the identification of stroke mimics.
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Affiliation(s)
- Tian Ming Tu
- Department of Neurology, National Neuroscience Institute, Singapore, Singapore. .,Singhealth Duke-NUS Neuroscience Academic Clinical Program, Singapore, Singapore.
| | - Guan Zhong Tan
- Lee Kong Chian School of Medicine, Nanyang Technological University of Singapore, Singapore, Singapore
| | - Seyed Ehsan Saffari
- Centre of Quantitative Medicine, Office of Research, Duke-NUS Medical School, Singapore, Singapore
| | - Chee Keong Wee
- Department of Neurology, National Neuroscience Institute, Singapore, Singapore
| | | | - Camlyn Tan
- Accident and Emergency Department, Changi General Hospital, Singapore, Singapore
| | - Hoon Chin Lim
- Accident and Emergency Department, Changi General Hospital, Singapore, Singapore
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Chtaou N, Bouchal S, Midaoui AEL, Souirti Z, Tachfouti N, Belahsen MF. Stroke Mimics: Experience of a Moroccan Stroke Unit. J Stroke Cerebrovasc Dis 2020; 29:104651. [PMID: 32115340 DOI: 10.1016/j.jstrokecerebrovasdis.2020.104651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 01/01/2020] [Accepted: 01/03/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Stroke mimic is a medical condition presenting with acute neurological deficit and simulate real stroke. The objective of this study was to evaluate the frequency and the various etiologies of stroke mimics in our center. METHODS We retrospectively reviewed the Thrombolysis Alert registry and we studied the frequency and characteristics of patients with stroke mimic. RESULTS Among 673 patients who were admitted to the emergency department within 4.5 hours for sudden focal neurological deficit suggestive of acute stroke, 105 patients (15.6 %) had a stroke mimic. The mean age of patients with mimics and brain strokes were 66.3 and 64.8, respectively. The mean Onset-to-door time was 136.82 minutes and the mean door-to-imaging time was 32.63 minutes in stroke mimics. Seizure (28.5%) was the most common diagnosis of stroke mimics followed by conversion disorder (25.7%). CONCLUSIONS Stroke mimic is frequent and heterogeneous entity that can be difficult to identify. Fortunately, most previous studies show no harmful effects when using thrombolysis in a stroke mimic.
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Affiliation(s)
- Naima Chtaou
- Department of Neurology, Hassan II University Teaching Hospital, Fez, Morocco; Laboratory of Epidemiology, Clinical Research, and Health Community, Faculty of Medicine and Pharmacy, Sidi Mohammed Ben Abdallah University, Fez, Morocco.
| | - Siham Bouchal
- Department of Neurology, Hassan II University Teaching Hospital, Fez, Morocco; Laboratory of Epidemiology, Clinical Research, and Health Community, Faculty of Medicine and Pharmacy, Sidi Mohammed Ben Abdallah University, Fez, Morocco
| | - Aouatef E L Midaoui
- Department of Neurology, Hassan II University Teaching Hospital, Fez, Morocco; Laboratory of Epidemiology, Clinical Research, and Health Community, Faculty of Medicine and Pharmacy, Sidi Mohammed Ben Abdallah University, Fez, Morocco
| | - Zouhayr Souirti
- Department of Neurology, Hassan II University Teaching Hospital, Fez, Morocco
| | - Nabil Tachfouti
- Laboratory of Epidemiology, Clinical Research, and Health Community, Faculty of Medicine and Pharmacy, Sidi Mohammed Ben Abdallah University, Fez, Morocco
| | - Mohammed Faouzi Belahsen
- Department of Neurology, Hassan II University Teaching Hospital, Fez, Morocco; Laboratory of Epidemiology, Clinical Research, and Health Community, Faculty of Medicine and Pharmacy, Sidi Mohammed Ben Abdallah University, Fez, Morocco
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