Volume 28, Issue 6 pp. 2006-2016
ORIGINAL ARTICLE

Thrombolytic therapy for wake-up stroke: A systematic review and meta-analysis

Brian Mac Grory

Brian Mac Grory

Department of Neurology, Duke University School of Medicine, Durham, North Carolina, USA

Contribution: Conceptualization (lead), Data curation (lead), Formal analysis (lead), ​Investigation (lead), Methodology (lead), Validation (lead), Writing - original draft (lead), Writing - review & editing (equal)

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Ian J. Saldanha

Ian J. Saldanha

Center for Evidence Synthesis in Health, Department of Health Services, Policy, and Practice, Brown University School of Public Health, Providence, Rhode Island, USA

Department of Epidemiology, Brown University School of Public Health, Providence, Rhode Island, USA

Contribution: Data curation (equal), Formal analysis (lead), Methodology (equal), Writing - review & editing (equal)

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Eva A. Mistry

Eva A. Mistry

Department of Neurology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA

Contribution: Conceptualization (supporting), Writing - review & editing (supporting)

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Christoph Stretz

Christoph Stretz

Department of Neurology, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA

Contribution: Conceptualization (supporting), Writing - review & editing (supporting)

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Sven Poli

Sven Poli

Department of Neurology With Focus on Neurovascular Diseases, University Hospital Tübingen, Tübingen, Germany

Hertie Institute for Clinical Brain Research, University Hospital Tübingen, Tübingen, Germany

Contribution: Conceptualization (supporting), Data curation (equal), Writing - review & editing (supporting)

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Marek Sykora

Marek Sykora

Department of Neurology, St. John’s Hospital, Medical Faculty, Sigmund Freud University, Vienna, Austria

Contribution: Conceptualization (supporting), Data curation (equal), Writing - review & editing (supporting)

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Lars Kellert

Lars Kellert

Department of Neurology, Ludwig Maximilians University, Munich, Germany

Contribution: Conceptualization (supporting), Data curation (equal), Writing - review & editing (supporting)

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Katharina Feil

Katharina Feil

Department of Neurology, Ludwig Maximilians University, Munich, Germany

Contribution: Data curation (supporting), Writing - review & editing (supporting)

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Shreyansh Shah

Shreyansh Shah

Department of Neurology, Duke University School of Medicine, Durham, North Carolina, USA

Contribution: Conceptualization (supporting), Writing - review & editing (supporting)

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Ryan McTaggart

Ryan McTaggart

Department of Neurology, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA

Department of Neurosurgery, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA

Department of Radiology, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA

Contribution: Conceptualization (equal), Writing - review & editing (equal)

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Derek Riebau

Derek Riebau

Department of Neurology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA

Contribution: Conceptualization (supporting), Writing - review & editing (supporting)

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Shadi Yaghi

Shadi Yaghi

Department of Neurology, New York University School of Medicine, New York, New York, USA

Contribution: Conceptualization (supporting), ​Investigation (supporting), Writing - review & editing (supporting)

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Kenneth Gaines

Kenneth Gaines

Department of Neurology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA

Contribution: Conceptualization (supporting), Writing - review & editing (supporting)

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Ying Xian

Ying Xian

Department of Neurology, Duke University School of Medicine, Durham, North Carolina, USA

Contribution: Writing - review & editing (supporting)

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Wuwei Feng

Wuwei Feng

Department of Neurology, Duke University School of Medicine, Durham, North Carolina, USA

Contribution: Conceptualization (supporting), Supervision (supporting), Writing - review & editing (supporting)

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Matthew Schrag

Corresponding Author

Matthew Schrag

Department of Neurology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA

Correspondence

Matthew Schrag, Department of Neurology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.

Email: [email protected]

Contribution: Conceptualization (lead), Data curation (equal), Formal analysis (supporting), Supervision (lead), Writing - original draft (supporting), Writing - review & editing (lead)

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First published: 26 March 2021
Citations: 7

Registration: This systematic review was prospectively registered through PROSPERO (Registration number: CRD42020151552).

Abstract

Background and purpose

According to evidence-based clinical practice guidelines, patients presenting with disabling stroke symptoms should be treated with intravenous tissue plasminogen activator (IV tPA) within 4.5 h of time last known well. However, 25% of strokes are detected upon awakening (i.e., wake-up stroke [WUS]), which renders patients ineligible for IV tPA administered via time-based treatment algorithms, because it is impossible to establish a reliable time of symptom onset. We performed a systematic review and meta-analysis of the efficacy and safety of IV tPA compared with normal saline, placebo, or no treatment in patients with WUS using imaging-based treatment algorithms.

Methods

We searched MEDLINE, Web of Science, and Scopus between January 1, 2006 and April 30, 2020. We included controlled trials (randomized or nonrandomized), observational cohort studies (prospective or retrospective), and single-arm studies in which adults with WUS were administered IV tPA after magnetic resonance imaging (MRI)- or computed tomography (CT)-based imaging. Our primary outcome was recovery at 90 days (defined as a modified Rankin Scale [mRS] score of 0–2), and our secondary outcomes were symptomatic intracranial hemorrhage (sICH) within 36 h, mortality, and other adverse effects.

Results

We included 16 studies that enrolled a total of 14,017 patients. Most studies were conducted in Europe (37.5%) or North America (37.5%), and 1757 patients (12.5%) received IV tPA. All studies used MRI-based (five studies) or CT-based (10 studies) imaging selection, and one study used a combination of modalities. Sixty-one percent of patients receiving IV tPA achieved an mRS score of 0 to 2 at 90 days (95% confidence interval [CI]: 51%–70%, 12 studies), with a relative risk (RR) of 1.21 compared with patients not receiving IV tPA (95% CI: 1.01–1.46, four studies). Three percent of patients receiving IV tPA experienced sICH within 36 h (95% CI: 2.5%–4.1%; 16 studies), which is an RR of 4.00 compared with patients not receiving IV tPA (95% CI: 2.85–5.61, seven studies).

Conclusions

This systematic review and meta-analysis suggests that IV tPA is associated with a better functional outcome at 90 days despite the increased but acceptable risk of sICH. Based on these results, IV tPA should be offered as a treatment for WUS patients with favorable neuroimaging findings.

CONFLICT OF INTERESTS

None of the authors declare conflicts of interest related to these data. The corresponding author had access to all data and takes responsibility for the accuracy of this article. All coauthors have reviewed the final draft and approved the submission.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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