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Safety and Efficacy of the Penumbra™ System in Acute Middle Cerebral Artery (MCA) Stroke

This study has been withdrawn prior to enrollment.
Information provided by (Responsible Party):
Lucas Scotta Cabral, Hospital de Clinicas de Porto Alegre Identifier:
First received: May 26, 2010
Last updated: September 2, 2015
Last verified: September 2015
Stroke prognosis is intimately related to reperfusion. Reperfusion in acute setting can be achieved with different strategies - varying from intravenous rtPA from mechanical thrombectomy. Recently, interventional approaches have been gaining attention and playing an increasing role in stroke care. However, no solid scientifical data is available to date. The investigators want do conduct a pilot trial to test if the use of the Penumbra™ System can improve clinical outcomes in a specific stroke setting.

Condition Intervention Phase
Device: Penumbra™ System
Drug: Recombinant tissue plasminogen activator
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Randomized Clinical Trial Comparing Intravenous Thrombolysis With Thrombectomy by the Penumbra™ System in Patients With Middle Cerebral Artery Stem Occlusion - Pilot Study

Further study details as provided by Lucas Scotta Cabral, Hospital de Clinicas de Porto Alegre:

Primary Outcome Measures:
  • Functional independence (modified Rankin Scale 0-2) [ Time Frame: 3 months ]

Secondary Outcome Measures:
  • Minimal or no disability (modified Rankin Scale 0-1) [ Time Frame: 3 months ]
  • Overall mortality [ Time Frame: 7 days and 3 months ]
  • Symptomatic cerebral bleeding rate [ Time Frame: 48 hours, 7 days and 3 months ]

Enrollment: 0
Study Start Date: May 2010
Estimated Study Completion Date: September 2015
Primary Completion Date: September 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Thrombectomy Device: Penumbra™ System
Patients assigned to the Thrombectomy arm will be conducted to the angio suite. Mechanical thrombectomy will be attempted with the use of the Penumbra™ System, and can be assisted by intraarterial thrombolysis (rTPA up to 20 mg)
Active Comparator: Usual Care Drug: Recombinant tissue plasminogen activator
Patients assigned to Usual Care arm will be thrombolysed according to the NINDS protocol (rtPA 0,9 mg/kg, 10% IV bolus and remaining in the next hour, up to 90 mg)


Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patient enrolled in acute ischemic stroke protocol
  • Up to 3,5h from symptoms onset
  • Clinical findings compatible with middle cerebral artery syndrome
  • Angiotomographic evidence of proximal middle cerebral artery occlusion

Exclusion Criteria:

  • NIHSS < 10
  • Overt contraindication to thrombolysis or angiopgraphy
  • Disagreement with informed consent term or refusal to participate
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Please refer to this study by its identifier: NCT01133223

Hospital de Clinicas de Porto Alegre
Porto Alegre, Rio Grande do Sul, Brazil, 90035-903
Sponsors and Collaborators
Hospital de Clinicas de Porto Alegre
Principal Investigator: Sheila Cristina Ouriques Martins, MD, PhD Hospital de Clinicas de Porto Alegre
  More Information


Responsible Party: Lucas Scotta Cabral, Hospital de Clinicas de Porto Alegre Identifier: NCT01133223     History of Changes
Other Study ID Numbers: GPPG 09-587
Study First Received: May 26, 2010
Last Updated: September 2, 2015

Keywords provided by Lucas Scotta Cabral, Hospital de Clinicas de Porto Alegre:
Stroke, mecanical thrombectomy

Additional relevant MeSH terms:
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases
Tissue Plasminogen Activator
Fibrinolytic Agents
Fibrin Modulating Agents
Molecular Mechanisms of Pharmacological Action processed this record on May 25, 2017