Evaluation of Treated and Untreated Stroke

NCT00001840 | Completed

• 2 other identifiers: 99004199-CC-0041
• Study Type: observational
• Target: 100
• Locations: 1 country
• Sites: 1

Brief Summary

This project will investigate the evolution of treated and untreated stroke in patients recruited from the collaborative brain stroke program between NINDS, CC, and Suburban Hospital. The study will use anatomical and functional imaging techniques with emphasis on the acute and subacute stage (less than one month) of the disease. As the availability of new therapeutic options for the management of acute brain stroke increases, the need to define the evolution of the disease becomes paramount, particularly as therapeutic windows, defined by known and perhaps yet undiscovered parameters, may exist. Defining these parameters will be based on state-of-the-art imaging technology with the potential of clarifying the division between ischemia (reversible damage) and infarction (irreversible). Measures of lesion size and distribution along with vascular morphology, diffusion, perfusion, flow-related, and metabolic measures will be obtained over time. We foresee these measurements will significantly develop our understanding of cerebral ischemia and introduce diagnostic and quantitative tools to guide therapy and measure its efficacy.

Conditions

Cerebrovascular Accident; Infarction; Ischemia

Keywords

Infarct; Ischemia; MRI; Natural History; Stroke; Treatment; Brain Stroke

Eligibility Criteria

• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

Any subject suspected of having a stroke based on the NIH Stroke Scale and age 21 years or over. Subjects will be enrolled into this protocol only if they are determined intellectually capable of providing their own informed consent. No subjects will be included if they have a condition which would preclude their entry into the scanner (e.g., paralyzed hemidiaphragm, morbid obesity, claustrophobia, etc.) or present unnecessary risks (e.g., surgery of uncertain type, symptoms of pheochromocytoma or insulinoma, etc.). No women who are pregnant or lactating. No subjects with hemoglobinopathies and asthma. No subjects with renal or hepatic disease. No subjects who have a contraindication to MR scanning such as surgery that involves metal clips or wires which might be expected to concentrate radiofrequency fields or cause tissue damage from twisting in a magnetic field (e.g., aneurysm clip, implanted neural stimulator, implanted cardiac pacemaker or autodefibrillator, cochlear implant, ocular foreign body and mechanical pump).

Contact the study team to discuss eligibility requirements. They can help determine if this study is right for you.

Sponsors & Collaborators

• National Institutes of Health Clinical Center (CC): lead

Study Sites (1)

Warren G. Magnuson Clinical Center (CC)

Bethesda, Maryland, 20892, United States

Location

Related Publications (3)

• Wolpert SM, Bruckmann H, Greenlee R, Wechsler L, Pessin MS, del Zoppo GJ. Neuroradiologic evaluation of patients with acute stroke treated with recombinant tissue plasminogen activator. The rt-PA Acute Stroke Study Group. AJNR Am J Neuroradiol. 1993 Jan-Feb;14(1):3-13.

  PMID: 8427107 BACKGROUND

• Hossmann KA. Viability thresholds and the penumbra of focal ischemia. Ann Neurol. 1994 Oct;36(4):557-65. doi: 10.1002/ana.410360404.

  PMID: 7944288 BACKGROUND

• Bryan RN, Levy LM, Whitlow WD, Killian JM, Preziosi TJ, Rosario JA. Diagnosis of acute cerebral infarction: comparison of CT and MR imaging. AJNR Am J Neuroradiol. 1991 Jul-Aug;12(4):611-20.

  PMID: 1688347 BACKGROUND

MeSH Terms

Conditions

Stroke; Infarction; Ischemia

Condition Hierarchy (Ancestors)

Cerebrovascular Disorders; Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Vascular Diseases; Cardiovascular Diseases; Pathologic Processes; Pathological Conditions, Signs and Symptoms; Necrosis

Study Design

• Study Type: observational
• Sponsor Type: NIH

Study Record Dates

• First Submitted: November 3, 1999
• First Posted: December 10, 2002
• Study Start: February 1, 1999
• Study Completion: July 1, 2001
• Last Updated: March 4, 2008

Record last verified: 2001-01

Locations

US (1)