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Publications (5)8.52 Total impact

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    ABSTRACT: BACKGROUND: Patient selection for acute ischemic stroke has been largely driven by time-based criteria, although emerging data suggest that image-based criteria may be useful. The purpose of this study was to directly compare outcomes of patients treated within a traditional time window with those treated beyond this benchmark when CT perfusion (CTP) imaging was used as the primary selection tool. METHODS: A prospectively collected database of all patients with acute ischemic stroke who received intra-arterial therapy at the Medical University of South Carolina was retrospectively analyzed, regardless of time from symptom onset. At presentation, CTP maps were qualitatively assessed. Selected patients underwent intra-arterial therapy. Functional outcome according to the modified Rankin scale (mRS) score at about 90 days was documented. RESULTS: 140 patients were included in the study. The median time from symptom onset to groin access was 7.0 h. Overall, 28 patients (20%) had bleeding complications, but only 10 (7.1%) were symptomatic. The average National Institute of Health Stroke Scale (NIHSS) score for patients treated ≤7 h from symptom onset was 17.3 and 30.2% had a mRS score of 0-2 at 90 days. Patients treated >7 h from symptom onset had an average NIHSS score of 15.1 and 45.5% achieved a mRS score of 0-2 at 90 days (p=0.104). Patients in the two groups had similar rates of symptomatic intracerebral hemorrhage (8.5% and 5.8%, respectively; p=0.745). CONCLUSIONS: No difference was found in the rates of good functional outcome between patients treated ≤7 h and those treated >7 h from symptom onset. These data suggest that imaging-based patient selection is a safe and viable methodology.
    Journal of Neurointerventional Surgery 08/2012; · 2.50 Impact Factor
  • Jordan Magarik, Joseph Kavolus, Robert Louis
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    ABSTRACT: There are only three fully trained neurosurgeons to care for Tanzania's population of more than 41 million people. Madaktari was founded in 2006 to serve as a physician training partnership to establish more self-sufficient health care through education and training. Medical students play a valuable role in Madaktari as they are primarily responsible for collecting postneurosurgical outcome data on operations performed by Tanzanian physicians trained by our organization. In addition, medical students represent the future of global medicine. Thus, it is important to determine the extent that Madaktari has affected student interest in global health. Our purpose in this article is to explore one student's experience working in global neurosurgery while working with Madaktari. In addition we attempted to determine the effect Madaktari may play on the future medical careers of eight medical student volunteers. To determine that effect we conducted a six-question online survey of medical student volunteers. We received responses from four of our eight medical student volunteers, all of whom stated they had a good or excellent experience volunteering with Madaktari and that their experience further increased their desire to incorporate global health into their careers. After working with Madaktari nearly half of the medical student volunteers have pursued or will be pursuing year-long funded global health research during their medical school careers. Madaktari is not only pioneering a path toward increased and more independent neurosurgical capabilities in Tanzania, but it is also helping foster increased interest and participation among U.S. medical students in global neurosurgery.
    World Neurosurgery 11/2011; 77(1):28-31. · 1.77 Impact Factor
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    ABSTRACT: To elucidate the progress of neurosurgical practices in Tanzania, taking into account humanitarian, socioeconomic, and geographic influences. Articles, records, and historical texts were consulted to establish a timeline and history of neurosurgery in Tanzania. Reulen, a German neurosurgeon, was integral to the development of sustainable neurosurgical services in Tanzania. By training Tanzanians who returned to their country to practice, Reulen helped to establish a continuity of care and legacy on which future Tanzanian surgeons could build. Subsequently, as neurosurgical services were integrated into the Muhimbili Orthopedic Institute, surgeons found a hospital to call home and a place to focus their efforts. Neurosurgical services have now been offered to the Tanzanian people for >40 years, a direct consequence of international influences coupled with certain extraordinary Tanzanian physicians. Neurosurgery in Tanzania and Africa more generally has a long history; however, it was not until more recent efforts of certain local pioneers and educational advisors abroad that modernization occurred. The progress of the past 50 years is substantial and with continued efforts advances will continue to be made.
    World Neurosurgery 11/2011; 78(1-2):31-4. · 1.77 Impact Factor
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    ABSTRACT: Traditional treatment in acute ischemic stroke is based on time criteria when administering intravenous and intra-arterial therapies. However, recent evidence suggests that image-based criteria may be useful for selecting patients for intra-arterial interventions. The use of CT perfusion (CTP)-based criteria, regardless of time from symptom onset, in patient selection for intra-arterial treatment of ischemic stroke was assessed. Patients with ischemic stroke who presented to the emergency department at the Medical University of South Carolina with a National Institute of Health Stroke Scale score of ≥ 8, regardless of time from symptom onset, were assessed retrospectively. CTP maps were qualitatively assessed for the presence of penumbra and infarction. Selected patients underwent mechanical aspiration of their occlusion using the Penumbra system. Functional outcome was then recorded using the modified Rankin scale (mRS) at 90 days or the closest follow-up to 90 days. 53 patients were included in the study. The median time from symptom onset to groin vascular access was 6.3 h. Eight patients (15%) had bleeding complications including subarachnoid hemorrhage, parenchymal hemorrhage and intraventricular hemorrhage. After CTP-based selection, the patients were divided into two groups for analysis: ≤6 h and >6 h from symptom onset to endovascular procedure. No difference was found in functional outcome between the two groups (38.5% and 40.7% achieved 90-day mRS ≤2, respectively (p=1.0) and 57.7% and 51.9% achieved 90-day mRS ≤3, respectively (p=0.785)). There was no difference in the rate of intracranial hemorrhage between the two groups (11.5 vs 18.5, p=0.704). This study demonstrated similar rates of good functional outcome and intracranial hemorrhage in patients with ischemic stroke when endovascular treatment was performed based on CTP selection rather than time-guided selection. These findings suggest that endovascular reperfusion in ischemic stroke may be effective and safe, and may allow patient selection not solely based on time from symptom onset.
    Journal of Neurointerventional Surgery 09/2011; 4(4):261-5. · 2.50 Impact Factor
  • Journal of the South Carolina Medical Association (1975) 108(5):128-31.