ArticleJACC. Case reports2026
Intracoronary Electrocardiography During Dobutamine Stress for Functional Assessment of Myocardial Bridging.
Article in JACC. Case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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
1 citing paper in PubMed.
- Exertional Syncope Caused by Hemodynamically Significant Myocardial Bridging With Coronary Vasospasm.JACC. Case reports · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMyocardial bridging (MB) can cause exertional ischemia, but functional assessment is challenging when ischemia is localized and undetected by surface electrocardiography (ECG). CASE SUMMARY: An 83-year-old man with vasospastic angina presented with recurrent exertional chest discomfort. Coronary angiography revealed MB in the mid-left anterior descending artery without significant epicardial stenosis. Intracoronary acetylcholine induced complete occlusion of a diagonal branch with symptom reproduction. Dobutamine stress testing using a pressure-sensor guidewire showed a resting full-cycle ratio ≤0.76 at 20 μg/kg/min, indicating functionally significant ischemia. Surface ECG remained unchanged; however, intracoronary ECG demonstrated marked ST-segment depression distal to the bridged segment, confirming localized ischemia. Switching medical therapy from nifedipine to diltiazem led to symptomatic improvement. TAKE-HOME MESSAGE: Intracoronary ECG performed during dobutamine stress testing may enable direct visualization of localized myocardial ischemia associated with MB, even in the absence of ischemic changes on surface ECG.
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.