# Acute Stroke

Acute stroke care hinges on immediate hemorrhage exclusion, rapid identification of disabling ischemia and large-vessel occlusion, timely reperfusion when eligible, physiologic stabilization, and early stroke-unit management. Contemporary guidelines emphasize systems that shorten treatment delays and extend thrombectomy to selected late-window patients.

**Clinical question:** How should physicians rapidly evaluate, select, and stabilize adults presenting with suspected acute stroke?

Updated: 2026-08-21T00:39:24.633531+00:00

## What matters in practice
- Treat suspected acute stroke as a time-critical emergency: establish stroke onset or last-known-well time, rapidly exclude hemorrhage, and activate reperfusion pathways without avoidable delay. [1][16]
- Mechanical thrombectomy plus best medical management improves functional outcomes in eligible large-vessel occlusion within 6 hours and in selected patients presenting 6 to 24 hours after onset. [6]
- For patients undergoing intravenous thrombolysis, lower blood pressure to less than 185/110 mm Hg before treatment and maintain less than 180/105 mm Hg during the first 24 hours. [11]
- Acute intracerebral hemorrhage requires active prevention of secondary brain injury, attention to hydrocephalus and raised intracranial pressure, and stroke-unit or intensive care rather than early therapeutic nihilism. [8][9]
- Rehabilitation begins after stroke diagnosis and should address mobility, self-care, dysphagia, cognition, communication, sensory deficits, and prevention of inpatient complications. [12][13][21]

## Activate a parallel diagnostic and reperfusion pathway

The initial objective is to identify treatable ischemia while excluding hemorrhage and stabilizing physiology.

Document the last-known-well time, obtain a focused neurologic examination including standardized severity assessment, establish glucose and vital signs, and immediately determine whether the presentation represents ischemic stroke, intracerebral hemorrhage, or a mimic. Acute ischemic stroke reflects critical reduction in cerebral blood flow from arterial stenosis or occlusion; treatment selection therefore depends on timing, clinical deficit, vascular anatomy, and brain imaging. [4][5]

Operational performance matters: current American Heart Association/American Stroke Association guidance addresses early management across the acute stroke continuum, and mobile stroke units can accelerate recognition and treatment of thrombolytic-eligible ischemic stroke. [15][16] Hospitals should use a protocol that permits noncontrast brain imaging, vascular imaging when large-vessel occlusion is suspected, laboratory testing, treatment eligibility review, and neurovascular consultation to proceed in parallel rather than sequentially. [1][16]
- Establish time last known well; do not substitute symptom recognition time when a patient awakened with deficits. [5][7]
- Obtain emergent brain imaging to distinguish ischemic stroke from hemorrhage before reperfusion treatment. [1][4]
- Assess for large-vessel occlusion early because endovascular eligibility is time-sensitive and extends to selected patients through 24 hours. [6]
- Admit to an organized acute stroke service or intensive care setting when neurologic or physiologic instability warrants it. [8][21]

*Time-sensitive decisions in suspected acute stroke. [1][6][8][11]*

| Clinical decision | Immediate action | Management consequence |
| --- | --- | --- |
| Hemorrhage versus ischemia | Urgent brain imaging | Hemorrhage excludes ischemic reperfusion therapy and initiates hemorrhage-specific management. [1][8] |
| Possible large-vessel occlusion | Obtain vascular and selection imaging through the local stroke pathway | Prompt transfer or neurointerventional activation may enable mechanical thrombectomy. [6] |
| Thrombolysis candidate with elevated blood pressure | Lower blood pressure below 185/110 mm Hg before treatment | Maintain blood pressure below 180/105 mm Hg during the first 24 hours after thrombolysis. [11] |
| Declining consciousness, hydrocephalus, or herniation concern in ICH | Escalate to neurocritical care and assess for raised intracranial pressure | Intensive intracranial pressure monitoring is recommended with GCS below 9, herniation, or hydrocephalus. [8] |

## Select reperfusion therapy by time, disability, imaging, and occlusion status

Intravenous thrombolysis and thrombectomy are complementary rather than competing therapies in eligible large-vessel occlusion.

Intravenous thrombolysis remains an early reperfusion strategy for eligible acute ischemic stroke. The supplied sources identify a conventional treatment window of less than 4.5 hours and describe evidence that tenecteplase 0.25 mg/kg as an intravenous push was noninferior to standard-dose recombinant tissue plasminogen activator in that time window; this statement derives from a Chinese guideline and should not be interpreted as a complete U.S. dosing or eligibility protocol. [7] The 2026 AHA/ASA guideline is the current U.S. early-management reference, but the available search content does not provide its detailed thrombolytic agent-selection, dosing, exclusion, or imaging criteria. [15][16]

For large-vessel occlusion, mechanical thrombectomy plus best medical management, including intravenous thrombolysis whenever indicated, improves functional outcome within 6 hours of symptom onset. Moderate-quality evidence also supports thrombectomy plus best medical management from 6 to 24 hours in patients meeting eligibility criteria used in published randomized trials. [6] Late-window care is therefore an imaging- and trial-eligibility decision, not a reason to deny evaluation solely because presentation exceeds the conventional thrombolysis window. [6][7]

During thrombectomy, avoid excessive blood pressure reductions. General anesthesia may be used when necessary, but patients receiving general anesthesia, conscious sedation, or local anesthesia require close vital-sign monitoring. [6] Transfer decisions should prioritize rapid access to an endovascular-capable center when a potentially eligible large-vessel occlusion is identified. [6]
- Do not delay thrombectomy evaluation because intravenous thrombolysis is being considered or administered; guideline-based best medical management includes thrombolysis when indicated. [6]
- Consider extended-window thrombectomy only after assessing whether the patient meets published randomized-trial eligibility criteria. [6]
- For wake-up or extended-window ischemic stroke, use protocolized advanced imaging selection rather than relying on clock time alone. [7]
- Use current U.S. AHA/ASA guidance and local stroke-center protocols for thrombolytic contraindications, agent selection, dose, and post-treatment antithrombotic timing; those details are not supplied in the available source excerpts. [15][16]

*Reperfusion evidence represented in the supplied sources. [6][7]*

| Scenario | Supported approach | Important limitation |
| --- | --- | --- |
| Large-vessel occlusion within 6 hours | Mechanical thrombectomy plus best medical management improves functional outcome. [6] | Patient-level vascular, clinical, and imaging selection remains necessary. [6] |
| Large-vessel occlusion 6 to 24 hours | Mechanical thrombectomy plus best medical management is supported for patients meeting published randomized-trial eligibility criteria. [6] | Do not generalize late-window benefit to unselected patients. [6] |
| Ischemic stroke within 4.5 hours | A cited international guideline reports tenecteplase 0.25 mg/kg IV push noninferior to standard-dose recombinant tissue plasminogen activator. [7] | The source is not a U.S. guideline and does not provide a complete U.S. eligibility or dosing framework. [7][15] |

## Use reperfusion-specific blood pressure targets and prevent secondary injury

Blood pressure management must preserve treatment eligibility without inducing harmful hypotension.

For acute ischemic stroke patients undergoing intravenous thrombolysis, contemporary guideline comparisons report a target below 185/110 mm Hg before treatment and below 180/105 mm Hg for the first 24 hours afterward. [11] These thresholds are specifically tied to reperfusion care; the available sources do not support a universal acute blood pressure target for ischemic stroke patients who are not receiving reperfusion therapy.

In patients undergoing thrombectomy, avoid excessive blood pressure drops and monitor vital signs regardless of whether general anesthesia, conscious sedation, or local anesthesia is used. [6] Acute care should also include active surveillance for complications that alter neurologic trajectory and rehabilitation readiness, including dysphagia, immobility-related complications, bowel and bladder dysfunction, respiratory complications, pressure injury, and venous thromboembolism risk. [12][21]
- Before intravenous thrombolysis: blood pressure less than 185/110 mm Hg. [11]
- First 24 hours after intravenous thrombolysis: blood pressure less than 180/105 mm Hg. [11]
- During thrombectomy: avoid excessive blood pressure reduction and maintain close vital-sign monitoring. [6]
- Perform dysphagia-focused assessment and implement complication prevention as part of acute and early rehabilitation care. [12][21]

*Physiologic targets and monitoring supported by the available sources. [6][11][21]*

| Context | Target or monitoring priority | Clinical rationale |
| --- | --- | --- |
| Before IV thrombolysis | Blood pressure less than 185/110 mm Hg. [11] | Meets the stated reperfusion-treatment threshold. [11] |
| First 24 hours after IV thrombolysis | Blood pressure less than 180/105 mm Hg. [11] | Meets the stated post-thrombolysis target. [11] |
| Thrombectomy anesthesia or sedation | Monitor vital signs and avoid excessive blood pressure drops. [6] | Hemodynamic instability may compromise cerebral perfusion. [6] |
| Acute hospitalization | Monitor swallowing, mobility, skin integrity, respiratory status, and bowel/bladder function. [21] | Early rehabilitation aims to prevent complications and facilitate self-care recovery. [21] |

## Manage intracerebral hemorrhage as an active neurocritical illness

Early management centers on stabilization, neurologic monitoring, and prevention of secondary brain injury.

Intracerebral hemorrhage may require immediate intensive care admission; otherwise, admission to an acute stroke unit is recommended as soon as possible. [8] Raised intracranial pressure can result from hematoma mass effect, perihematomal edema, or hydrocephalus. [8] Patients with GCS below 9, clinical evidence of herniation, or hydrocephalus warrant intensive intracranial pressure monitoring. [8]

Supportive measures used for raised intracranial pressure in other settings may be considered, including head-of-bed elevation to 30 degrees, analgesia, mild sedation, and mannitol or hypertonic saline selected in light of cardiac and renal comorbidity; the source emphasizes limited direct evidence for these measures in ICH. [8] Corticosteroids should not be used to lower intracranial pressure in ICH because they may cause more harm than benefit. [8]

Avoid early limitation of care based solely on pessimistic assumptions. The ICH literature warns that therapeutic nihilism and early comfort-focused ceilings of care occur more often than in ischemic stroke and can influence outcome. [8] Reassess prognosis after initial stabilization and communicate uncertainty explicitly.
- Escalate immediately for reduced consciousness, hydrocephalus, or herniation concern. [8]
- Use stroke-unit care for all appropriate patients and ICU-level care when instability or neurocritical monitoring is needed. [8]
- Do not use corticosteroids for intracranial pressure reduction in spontaneous ICH. [8]
- Avoid premature prognostic closure and early treatment limitation. [8]

*Early intracerebral hemorrhage priorities. [8]*

| Problem | Action | Evidence qualification |
| --- | --- | --- |
| Raised intracranial pressure | Consider head elevation, analgesia, mild sedation, mannitol, or hypertonic saline individualized to cardiac and renal status. [8] | Direct evidence in ICH is limited. [8] |
| GCS below 9, herniation, or hydrocephalus | Use intensive intracranial pressure monitoring. [8] | Recommended in the cited review. [8] |
| Corticosteroid use for ICP | Avoid corticosteroids. [8] | Potential harm exceeds benefit. [8] |

## Begin rehabilitation and secondary-prevention planning during the acute admission

Rehabilitation is an acute-care responsibility, not a post-discharge add-on.

Stroke rehabilitation begins once the diagnosis is established. In the acute phase, priorities include mobilization as tolerated, resumption of self-care, prevention of recurrent stroke and medical complications, and support for patients and families. [21] U.S. rehabilitation guidance emphasizes timing and approach, motor therapy, dysphagia, and cognitive, speech, and sensory deficits. [12][13]

Use an interdisciplinary assessment to determine rehabilitation needs and destination. The available sources do not provide validated disposition thresholds, medication regimens for secondary prevention, or detailed post-stroke antithrombotic strategies; these should be determined by stroke subtype and current U.S. prevention guidance. [9][13]
- Assess and address motor impairment, dysphagia, cognition, speech, sensory impairment, and ability to perform self-care. [12][13]
- Prevent immobility-related complications through positioning, range-of-motion activity, progressive mobilization as tolerated, and skin and respiratory care. [21]
- Integrate secondary-prevention planning before discharge; stroke and TIA prevention guidance is cited in current stroke references. [9]

## Common questions

### Should intravenous thrombolysis delay transfer for mechanical thrombectomy?

No. For eligible large-vessel occlusion, thrombectomy is used with best medical management, including intravenous thrombolysis whenever indicated. Parallel treatment and transfer processes are preferable to serial delays. [6]

### What blood pressure is required for intravenous thrombolysis?

Lower blood pressure to less than 185/110 mm Hg before intravenous thrombolysis, then maintain less than 180/105 mm Hg for the first 24 hours. [11]

### Can thrombectomy be considered beyond 6 hours from onset?

Yes. Mechanical thrombectomy plus best medical management is supported from 6 to 24 hours in patients meeting eligibility criteria from published randomized trials. [6]

### When should intracranial pressure monitoring be used in intracerebral hemorrhage?

The cited review recommends intensive monitoring in patients with GCS below 9, evidence of herniation, or hydrocephalus. [8]

### When should stroke rehabilitation start?

Begin rehabilitation after stroke diagnosis during the acute phase, with attention to mobilization, self-care, dysphagia, cognitive and communication deficits, and prevention of inpatient complications. [12][13][21]

## References
1. Management of Patients With Acute Ischemic Stroke — jamanetwork.com — https://jamanetwork.com/journals/jama/article-abstract/2738918
2. Public Reporting of Quality and Clinical Outcomes in the ... — jamanetwork.com — https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2843730
3. Extended-Window IV Thrombolysis for Treatment of Acute ... — jamanetwork.com — https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2852523
4. Acute Stroke Intervention: A Systematic Review — jamanetwork.com — https://jamanetwork.com/journals/jama/article-abstract/2247149
5. Ischemic stroke - Symptoms, diagnosis and treatment | BMJ Best Practice US — bestpractice.bmj.com — https://bestpractice.bmj.com/topics/en-us/1078
6. European Stroke Organisation (ESO) - European Society for Minimally Invasive Neurological Therapy (ESMINT) Guidelines on Mechanical Thrombectomy in Acute Ischemic Stroke | Journal of NeuroInterventional Surgery — jnis.bmj.com — https://jnis.bmj.com/content/15/8/e8
7. Chinese Stroke Association guidelines for clinical ... — svn.bmj.com — https://svn.bmj.com/content/8/6/e3
8. Acute intracerebral haemorrhage: diagnosis and management | Practical Neurology — pn.bmj.com — https://pn.bmj.com/content/21/2/128
9. Hemorrhagic stroke - Symptoms, diagnosis and treatment | BMJ Best Practice US — bestpractice.bmj.com — https://bestpractice.bmj.com/topics/en-us/1079
10. Guidelines on early stroke management updated — www.acpjournals.org — https://www.acpjournals.org/doi/10.7326/acph-20260204-guidelines-on-early-stroke-management-updated
11. Blood pressure management in stroke: comparative review of the 2025 AHA/ACC/AANP/ACPM/AGS/AMA/ASPC/NMA/PCNA/SGIM, 2024 ESC, 2023 ESH, and 2025 JSH guidelines | Hypertension Research — www.nature.com — https://www.nature.com/articles/s41440-025-02517-0
12. The Management of Stroke Rehabilitation: A Synopsis ... — www.acpjournals.org — https://www.acpjournals.org/doi/10.7326/M19-1695
13. Stroke Rehabilitation: Synopsis of the 2024 U.S. ... — www.acpjournals.org — https://www.acpjournals.org/doi/10.7326/ANNALS-24-02205
14. Cardiovascular diseases — go.nature.com — http://go.nature.com/3dvysp6
15. 2026 Acute Ischemic Stroke Guidelines — www.ahajournals.org — https://www.ahajournals.org/guidelines/acute-ischemic-stroke
16. 2026 Guideline for the Early Management of Patients With ... — www.ahajournals.org — https://www.ahajournals.org/doi/10.1161/STR.0000000000000513
17. Guidelines for the Early Management of Patients With ... — www.ahajournals.org — https://www.ahajournals.org/doi/10.1161/str.0b013e318284056a
18. 2024 Guideline for the Primary Prevention of Stroke — www.ahajournals.org — https://www.ahajournals.org/doi/10.1161/STR.0000000000000475
19. National Institutes of Health Stroke Scale - an overview — www.sciencedirect.com — https://www.sciencedirect.com/topics/nursing-and-health-professions/national-institutes-of-health-stroke-scale
20. Biomarkers for advancing diagnosis and prognosis in stroke — www.sciencedirect.com — https://www.sciencedirect.com/science/article/pii/S1474442225004806
21. Stroke Rehabilitation - an overview — www.sciencedirect.com — https://www.sciencedirect.com/topics/medicine-and-dentistry/stroke-rehabilitation
22. Drug Dosing Recommendations for All Patients: A Roadmap ... — ascpt.onlinelibrary.wiley.com — https://ascpt.onlinelibrary.wiley.com/doi/10.1002/cpt.1923
23. American Society for Clinical Pharmacology and Therapeutics — ascpt.onlinelibrary.wiley.com — https://ascpt.onlinelibrary.wiley.com/doi/10.1002/cpt.3607
24. 2024 CPDD Abstract Booklet - 2024 - Wiley Online Library — accp1.onlinelibrary.wiley.com — https://accp1.onlinelibrary.wiley.com/doi/full/10.1002/cpdd.1459

## Editorial note

Prepared from cited clinical literature using Astra's research workflow. Verify recommendations against current guidance and patient-specific factors.