SynthesisClinical anatomy (New York, N.Y.)2026
A Meta-Analysis and Simplified Nomenclature for Diagonal Coronary Artery and Ramus Intermedius Across Adult and Pediatric Hearts.
Synthesis in Clinical anatomy (New York, N.Y.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.
What it found
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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
2 citing papers in PubMed, 1 synthesis or guideline pooled it.
- A Meta-Analysis and Simplified Nomenclature for Diagonal Coronary Artery and Ramus Intermedius Across Adult and Pediatric Hearts.Clinical anatomy (New York, N.Y.) · 2026Pooled it
- Coronary Artery Anomalies and Anatomical Variants: Cross-Sectional Diagnostic Imaging and Clinical Background.Journal of imaging · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Anatomical descriptions of left-sided oblique coronary branches remain inconsistent, hindering imaging interpretation and surgical planning. To quantify the prevalence, branching patterns and morphometry of the ramus intermedius (RI) and diagonal branches, and propose a unified nomenclature. Following PRISMA guidelines, a PubMed search up to 12 June 2025 yielded 623 records. Forty-six studies involving 25,602 hearts were included, and random-effects meta-analysis was applied to pool prevalence and continuous outcomes. Overall, an additional left-main branch (RI) was present in 25.2% (95% CI: 8.7-54.5). Trifurcation dominated (22.7%), whereas quadrifurcation and pentafurcation occurred in 3.7% and 1.3% respectively. The pooled RI/diagonal diameter averaged 2.21 mm (95% CI 2.02-2.39), and mean branch length was 49.1 mm (95% CI 37.8-60.5). Methodological heterogeneity was high but consistent patterns emerged across cadaveric and imaging modalities. An oblique "diagonal artery", whether arising from the left main (RI) or anterior interventricular artery, is present in roughly 25% of hearts, averages 2.2 mm in caliber and extends to 49 mm. Recognizing this vessel family and standardizing the term "diagonal arteries" will improve coronary imaging reporting and guide revascularization strategies.
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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.