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TerminatedNCT01502748Updated Aug 1, 2017

Endovascular Magnesium Sampling in Acute Stroke

An interventional study of endovascular sampling in Acute Stroke, sponsored by University of Southern California. Terminated at 2 sites in United States. Open to participants aged 40 Years to 95 Years. Per ClinicalTrials.gov, last updated 2017-08-01.

Sponsored by University of Southern California · Not applicable, Interventional, and Diagnostic

Why this study was terminated
FAST-Mag study finished
Phase
Not applicable
Study type
Interventional
Enrollment
2
Allocation
Not applicable
Ages
40 Years to 95 Years
Sex
All
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Study summary

This investigation will address the safety and feasibility of distal, intra-arterial sampling through endovascular access, in acute stroke patients. Levels of Magnesium will be measured in the region of infarct in patients who had been treated with intravenous Magnesium therapy following an acute stroke. This study attempts to address whether the traditional intravenous means of neuroprotectant administration achieves adequate concentration of the therapeutic agent in the area of diseased tissue.

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Conditions studied

  • Acute Stroke

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Keywords

  • stroke
  • Magnesium
  • Endovascular
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In context

Stroke

7,286 studies on the registry are indexed under Stroke; 2,007 are open to participants now.

This study's enrollment of 2 is below the median of 50 across 5,369 interventional studies indexed under Stroke.

Browse Stroke studies →

Lead sponsor

University of Southern California is the lead sponsor of 773 studies on the registry; 135 are open to participants now.

Of its 68 completed or terminated interventional studies of FDA-regulated products, 32 (47%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
40 Years to 95 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Patient with acute cerebral ischemia due to ICA or MCA occlusion,
  2. Patient already enrolled in the NIH FAST-MAG clinical trial,
  3. Patient's clinical attending physician plans mechanical embolectomy procedure as part of routine clinical care.
  4. Age 40-95 inclusive (age criteria for FAST-MAG Trial).

Exclusion criteria

Exclusion Criteria:

  1. Technical inability to navigate microcatheter to target clot.
  2. Patient or surrogate unavailable for consent
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Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
2 participants (actual)

Study arms

  • Experimental
    Endovascular Sampling

    Paired sampling from the distal arterial(endovascular catheter) and peripheral venous (femoral sheath) locations in acute stroke patients undergoing endovascular recanalization who received intravenous Magnesium Sulfate as a part of the FAST-MAG study

    Other: endovascular sampling

Interventions

  • Otherendovascular sampling

    Paired sampling from the distal arterial(endovascular catheter) and peripheral venous (femoral sheath) locations: withdrawal of 3ml of blood from vasculature distal to the occlusive thrombus

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What researchers measure

Primary outcomes

  1. Magnesium concentration

    The primary endpoint is the relative concentration of Mg in the core cerebral ischemic zone, compared to systemic therapeutic Mg levels, as a measure of delivery efficacy of systemic administration.

    Time frame: intra-procedure (at time of first pass of retrieval device)

Secondary outcomes

  1. Sampling feasibility

    sampling feasibility will be determined by the proportion of cases in which a cerebral circulation Mg level was successfully assayed

    Time frame: intra-procedural (at time of first pass of retrieval device)

  2. Safety

    safety will be assessed by intraoperative adverse events, postoperative neurologic examination including NIH stroke scale, and postoperative brain imaging.

    Time frame: post-operative day 1

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Study locations

2 sites
  • University California Los Angeles: Ronald Reagan and Santa Monica Hospitals
    Los Angeles, California 900094, United States
  • University of Southern California University and LA County Hospitals
    Los Angeles, California 90033, United States
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 1, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01502748
Lead sponsor
University of Southern California
Collaborators
University of California, Los Angeles
Responsible party
William Mack (Assistant Professor of Neurosurgery, University of Southern California) — Principal investigator
First posted
Jan 2, 2012
Start date
Mar 2012
Primary completion
Feb 2013
Completion
Feb 2013
Last update
Aug 1, 2017

Study contacts

William J Mack, MD
principal investigator · University of Southern California
Jeffrey Saver, MD
principal investigator · University of California, Los Angeles

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Jul 2017. You cannot join it, but the record below documents what was studied.

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