ArticleJACC. Case reports2026
Shark-Fin Pattern in aVR Lead as First Manifestation of Acute Left Main Coronary Artery Occlusion.
Article in JACC. Case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
background"Shark-fin" is a rare but serious electrocardiogram (ECG) pattern often suggestive of proximal left anterior descending or left main coronary artery (LMCA) involvement. CASE SUMMARY: A 66-year-old man came to our hospital for acute chest pain and cardiogenic shock. ECG showed a shark-fin waveform in aVR lead along with diffuse ST-segment depression. Urgent coronary angiography demonstrated complete thrombotic LMCA occlusion and primary percutaneous coronary intervention with stent implantation allowed for hemodynamic stabilization and ECG normalization. DISCUSSION: Shark-fin is one of a series of patterns described as "ST-segment elevation myocardial infarction equivalent." It usually affects the anterior leads, expressing a left anterior descending artery critical lesion or occlusion. Here, the presence of this sign in the aVR lead was associated with LMCA acute, total, occlusion and a rapid diagnosis was crucial to enable the most appropriate treatment. TAKE-HOME MESSAGES: Shark-fin sign is an "ST-segment elevation myocardial infarction equivalent" pattern. When involving the aVR lead, it should raise immediate suspicion for LMCA occlusion. Rapid recognition and emergent reperfusion can be lifesaving.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.