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The primary objectives of the Multi MERCI trial were:
Per the Multi MERCI protocol, up to 230 patients could be treated at up to 30 centers.
The intended trial indication for the Merci L5 Retriever was to restore blood flow in the neurovasculature by removing thrombus in patients experiencing ischemic stroke. Patients that were contraindicated or failed treatment with intravenous t-PA were allowed to be enrolled under the Multi MERCI protocol.
Per the Multi MERCI protocol, following inclusion of the Merci L5 Retriever the operating physician was required to initiate treatment with the Merci L5 Retriever. At the physician's discretion, subsequent passes could be made with the Merci L5 Retriever, Merci X6 Retriever and/or Merci X5 Retriever.
Adverse events were adjudicated by an independent Data Safety and Monitoring Board (Capital DSMB).
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Treatment | Experimental | Treatment arm patients had at least one Merci Retriever deployed |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Merci Retriever | Device | For patients eligible to participate in the trial, the operating physician initiated treatment with the Merci L5 Retriever to remove large vessel thrombotic occlusion and recanalization of the vessel. Subsequent treatment could be made with Merci X6 or X5 Merci Retrievers. Large vessel arteries are defined as internal carotid, middle cerebral M1/M2 segments, basilar, and vertebral arteries. Recanalization was defined as TIMI II or TIMI III per angiography. |
| Measure | Description | Time Frame |
|---|---|---|
| Revascularization success; Rates of device-related serious adverse events | post-procedure |
| Measure | Description | Time Frame |
|---|---|---|
| modified Rankin scores | 90-day | |
| mortality | 90-day | |
| Symptomatic hemorrhage rate |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Wade S Smith, MD, PhD | University of California, San Francisco | Principal Investigator |
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| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 18309168 | Result | Smith WS, Sung G, Saver J, Budzik R, Duckwiler G, Liebeskind DS, Lutsep HL, Rymer MM, Higashida RT, Starkman S, Gobin YP; Multi MERCI Investigators; Frei D, Grobelny T, Hellinger F, Huddle D, Kidwell C, Koroshetz W, Marks M, Nesbit G, Silverman IE. Mechanical thrombectomy for acute ischemic stroke: final results of the Multi MERCI trial. Stroke. 2008 Apr;39(4):1205-12. doi: 10.1161/STROKEAHA.107.497115. Epub 2008 Feb 28. | |
| 16775259 |
| Label | URL |
|---|---|
| Concentric Medical Website | View source |
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| ID | Term |
|---|---|
| D000083242 | Ischemic Stroke |
| D020521 | Stroke |
| D007511 | Ischemia |
| D013927 | Thrombosis |
| D004617 | Embolism |
| ID | Term |
|---|---|
| D002561 | Cerebrovascular Disorders |
| D001927 | Brain Diseases |
| D002493 | Central Nervous System Diseases |
| D009422 | Nervous System Diseases |
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|
| 24 hour post procedure |
| Result |
| Smith WS. Safety of mechanical thrombectomy and intravenous tissue plasminogen activator in acute ischemic stroke. Results of the multi Mechanical Embolus Removal in Cerebral Ischemia (MERCI) trial, part I. AJNR Am J Neuroradiol. 2006 Jun-Jul;27(6):1177-82. |
| 17332445 | Result | Flint AC, Duckwiler GR, Budzik RF, Liebeskind DS, Smith WS; MERCI and Multi MERCI Writing Committee. Mechanical thrombectomy of intracranial internal carotid occlusion: pooled results of the MERCI and Multi MERCI Part I trials. Stroke. 2007 Apr;38(4):1274-80. doi: 10.1161/01.STR.0000260187.33864.a7. Epub 2007 Mar 1. |
| 18346645 | Result | Lutsep HL, Rymer MM, Nesbit GM. Vertebrobasilar revascularization rates and outcomes in the MERCI and multi-MERCI trials. J Stroke Cerebrovasc Dis. 2008 Mar-Apr;17(2):55-7. doi: 10.1016/j.jstrokecerebrovasdis.2007.11.003. |
| 24876082 | Derived | Shi ZS, Liebeskind DS, Xiang B, Ge SG, Feng L, Albers GW, Budzik R, Devlin T, Gupta R, Jansen O, Jovin TG, Killer-Oberpfalzer M, Lutsep HL, Macho J, Nogueira RG, Rymer M, Smith WS, Wahlgren N, Duckwiler GR; Multi MERCI, TREVO, and TREVO 2 Investigators. Predictors of functional dependence despite successful revascularization in large-vessel occlusion strokes. Stroke. 2014 Jul;45(7):1977-84. doi: 10.1161/STROKEAHA.114.005603. Epub 2014 May 29. |
| 24789707 | Derived | Liebeskind DS, Flint AC, Budzik RF, Xiang B, Smith WS, Duckwiler GR, Nogueira RG; MERCI and Multi-MERCI Investigators. Carotid I's, L's and T's: collaterals shape the outcome of intracranial carotid occlusion in acute ischemic stroke. J Neurointerv Surg. 2015 Jun;7(6):402-7. doi: 10.1136/neurintsurg-2014-011231. Epub 2014 May 1. |
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D016769 | Embolism and Thrombosis |