title: Late endovascular revascularization in acute ischemic stroke based on clinical-diffusion mismatch.
abstract: OBJECTIVE
  A clinical-diffusion mismatch (CDM) among stroke patients presenting within 12-24 hours has been correlated with neurologic deterioration and infarct expansion. We sought to study the feasibility and safety of reperfusion therapy in a series of 11 consecutive patients fulfilling this criterion.
  
  
  METHODS
  Patients presenting with large vessel syndromes were considered for revascularization therapy. Of these patients, we identified those presenting beyond 8 hours who scored > or =8 on the National Institutes of Health Stroke Scale (NIHSS) and had limited abnormalities on diffusion-weighted MR imaging. One- and 7-day NIHSS scores were obtained. Rates of early neurologic deterioration (END, increase in NIHSS score by > or =4 points) and early neurologic improvement (ENI, decrease in NIHSS score by > or =4 points) at 1 week were determined. Follow-up imaging was obtained to evaluate intracranial hemorrhage (ICH).
  
  
  RESULTS
  Eleven patients were identified, 8 of whom were successfully revascularized. The mean age of all patients was 55 years with mean initial, 24-hour, and 1-week NIHSS scores of 14 +/- 4, 11 +/- 7, and 6 +/- 5, respectively, with lower scores at 24 hours and 1 week (8 +/- 5 and 4 +/- 3, respectively) among patients successfully revascularized. Eight of the treated patients (72% of the total, 100% of those successfully revascularized) experienced ENI. No patient had END or ICH.
  
  
  CONCLUSIONS
  Endovascular treatment for acute ischemic stroke beyond 8 hours is feasible and may prevent END and promote ENI in patients fulfilling the criteria of a CDM. A prospective study is planned.
authors.affiliation: Department of Neurology, Division of Interventional and Critical Care Neurology, Long Island College Hospital, Brooklyn, NY 11201, USA. NJanjua@chpnet.org
authors.forename: N
authors.initials: N
authors.lastname: Janjua
authors.forename: A
authors.initials: A
authors.lastname: El-Gengaihy
authors.forename: J
authors.initials: J
authors.lastname: Pile-Spellman
authors.forename: A I
authors.initials: AI
authors.lastname: Qureshi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002545:Brain Ischemia / Q000175:diagnosis* / Q000209:etiology / Q000517:prevention & control*; D002548:Cerebral Revascularization / Q000379:methods*; D002648:Child; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D005240:Feasibility Studies; D005260:Female; D005343:Fibrinolytic Agents / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D020521:Stroke / Q000150:complications / Q000175:diagnosis* / Q000628:therapy*; D015912:Thrombolytic Therapy / Q000379:methods; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D005343:Fibrinolytic Agents