The “index vein” as a sign for migraine aura in the emergency setting is a research paper published in Cephalalgia (2023). On theSindex it has a DataRank of 0.351. It has been cited 8 times, with 4 citing works in its 1-hop citation network.
Background and objectives To assess the usefulness of the “index vein” for making the diagnosis of migraine aura. Methods 400 patients were included when they: i) presented with an acute neurological deficit, ii) had a brain MRI, and iii) had a discharge diagnosis of migraine aura, ischemic stroke, epileptic seizure or controls (n = 100 per group). Results Compared to stroke (2%), epileptic seizure (4%) and controls (1%), the index vein is more prevalent in migraine aura (17%, p < 0.001). The index vein is highly specific for migraine aura (specificity 97%, 95% CI 95–99). The index vein has a positive predictive value for the diagnosis of migraine aura of 70% (95%CI 48–87). The index vein-score has the ability to diagnose migraine aura with a sensitivity of 94% (95%CI 87.4–97.8) and specificity of 73.5% (95%CI 66.8–79.5) at a cut-off of 4 points. Discussion The index vein serves as a good biomarker for migraine aura in the emergency setting.
FAIR checklist signals are shown for context only and do not affect DataRank scoring.
Base Score Contribution
0.330
From this paper's citation signal
Citation Network Contribution
0.0209
From 2 citing papers with measurable signal
Ranked by citation count — the same ordering the engine uses when summing log1p(Cq) over citers.
DataRank blends this paper's own citation count with the influence of the papers that cite it. Here, roughly 94% comes from its base citations and 6% from the citation network (2 citing papers contributed measurable signal).
Citers are pulled from OpenAlex sorted by cited_by_count:descand capped per paper, so when the cap binds we keep the highest-signal references and the score is reproducible across reruns.
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