Background: Transient ischemic attack (TIA) is described as a brief episode of neurological dysfunction caused by focal brain ischemia, with clinical symptoms typically lasting less than an hour, and without evidence of acute infarction. Recent studies depict TIA as a particularly unstable condition. Risk of stroke is greater than 10% in the first 90 days after an index TIA. The presentation, prognosis and intervention for TIA have not been reported in South-Asians in a developing country. Method: A retrospective chart review was done for 158 patients who were admitted with the diagnosis of TIA, as defined by ICD 9 code 435, from

Background: Antiphospholipid antibodies (aPLs) have been associated with thrombosis in the antiphospholipid antibody syndrome (APS) and with atherosclerotic vascular events in patients without APS. We examined the significance of aPLs in transient ischemic attack (TIA). Patients/methods: Patients with TIA <48 h from symptom onset were prospectively enrolled. Traditional aPLs, including anticardiolipin and β2-glycoprotein-I (β2GPI), and newer aPLs, including anti-phosphatidylserine/prothrombin (aPS/PT), β2GPI Domain 4/5 and β2GPI Domain 1 were measured. Primary outcome was a composite of stroke or death within 90 days or identification of a high risk stroke mechanism. Secondary outcomes were stroke or death and the presence of clinical/sub-clinical atherosclerosis. Results: Over 4.5 years, 167 patients were enrolled. Forty one patients (25%) had the composite endpoint. Antibodies were measured in 158 subjects. aPS/PT IgG antibodies were significantly associated with stroke/death (OR 16.3, 95% CI 2.3–116.7, p = 0.005) and were non-significantly associated with the composite endpoint (OR 4.7, 95% CI 0.8–29.2, p = 0.10). In multivariate analysis adjusting for ABCD2 risk score, aPS/PT IgG remained associated with stroke/death (OR 15.7, 95% CI 2.0–125.6, p = 0.009). Other aPLs were not associated with clinical outcome and no association between APLs and atherosclerosis was identified. Conclusion: In contrast to other aPLs, aPS/PT IgG antibodies are independently associated with stroke or death in patients with TIA.

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BACKGROUND The resistivity index (RI) in cerebral venous sinus stenosis (VSS) has not been studied in patients with idiopathic intracranial hypertension (IIH). OBJECTIVE To evaluate the role of RI measured by quantitative magnetic resonance venogram (QMRV) as a noninvasive tool in the diagnosis of venous hypertension associated with VSS in IIH. METHODS Retrospective evaluation of 13 consecutive IIH patients who underwent venous sinus stenting at our institution between 2013 and 2018. Patients’ demographics, clinical presentation, cerebral mean venous sinus pressure (MVP), and RI both pre- and poststenting were recorded. The baseline RI was also compared to a control group. RESULTS Among 13 patients of IIH, 11 had unilateral VSS in dominant sinus, whereas 2 had bilateral VSS. RI was significantly higher in IIH patients compared to the control group in the superior sagittal (SSS) and transverse sinuses (TS) (0.21 vs 0.11, P = .01 and 0.22 vs 0.13, P = .03, respectively). The MVP (in mm Hg) decreased significantly after venous sinus stenting in the SSS (41.9 to 22.5, P &lt; .001) and TS (39.4 to 19.5, P &lt; .001), which was also associated with a significant reduction of the RI (0.22 vs 0.17, P &lt; .01 in SSS and 0.23 vs 0.17, P = .03 in TS) poststenting. CONCLUSION RI calculated using QMRV can serve as a noninvasive tool to aid in the diagnosis of hemodynamically significant VSS. The study had a small sample size, and larger multicenter studies would be required to validate the results further.

BACKGROUND Acute endovascular revascularization for isolated internal carotid occlusion without tandem intracranial occlusion has been proposed to prevent early neurologic deterioration (END) and improve outcome, but has not been shown to be more effective than medical therapy. We aimed to evaluate prognosis with initial medical therapy alone, and also performed a systematic review to put these results in a broader context. METHODS We performed a retrospective cohort study of patients admitted over a 2‐year period with acute stroke/transient ischemic attack due to isolated internal carotid artery occlusion. Subjects with tandem intracranial occlusion or Alberta Stroke Program Early CT Score (ASPECTS) ≤5 were excluded. The primary outcome was END within 48 hours (National Institute of Health Stroke Scale [NIHSS] increase ≥4 persisting for ≥24 hours). Secondary outcomes included discharge NIHSS and disposition. We also performed a systematic review and meta‐analysis of published studies along with the data from our cohort. RESULTS Twenty‐three patients met our inclusion criteria. Median age was 69 years, initial Alberta Stroke Program Early CT Score 10, and NIHSS score 3. END attributed to recurrent ischemia occurred in 5/23 patients (22%, 95% CI: 7%–44%). At discharge, 78% had a favorable outcome with a median NIHSS of 2 (interquartile range 1–3). END appeared more frequent in those with higher baseline NIHSS. In our systematic review, 7 prior studies met our inclusion criteria. END occurred in 17% (95% CI: 12%–23%) of patients, 18% with medical therapy versus 13% with endovascular therapy, with substantial heterogeneity among studies. CONCLUSION In patients with acute stroke or transient ischemic attack due to isolated internal carotid occlusion, END is relatively common (occurring in about 1 out of 6 patients). Further research is needed to evaluate the roles of maximal medical management or acute endovascular thrombectomy in these patients.