ReviewCardiology2026
Effects of Pharmacologic, Non-Pharmacologic, and Exercise-Based Interventions on Coronary Collateral Circulation: A Scoping Review.
Review in Cardiology, 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
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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
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Who cites it
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Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionCoronary collaterals are vascular connections that bridge epicardial arteries and supply blood to the oxygen-deprived myocardium in patients with coronary artery disease (CAD). This comprehensive review aimed to identify and evaluate potential interventions that may enhance the growth of coronary collateral vessels.
methodsWe conducted a scoping review of five databases to identify relevant studies that focused on interventions that may promote coronary collateral circulation in patients with CAD.
resultsOur search identified 23 studies that met our inclusion criteria. Studies (n = 7) using pharmacologic agents (i.e., angiotensin-converting enzyme inhibitors, granulocyte macrophage colony stimulating factor, statins, human recombinant basic fibroblast growth factor, and granulocyte macrophage colony stimulating factor) were found to improve collateralization, as did the non-pharmacologic studies (n = 13) (i.e., exercise training, electrical stimulation, and enhanced external counterpulsation), which formed most of the studies. Three studies found benefits of a combination of exercise and heparin. Improvements were seen in collateralization as measured by the coronary flow index and Rentrop scores across all interventions. Effect sizes from randomized trials with pharmacologic, non-pharmacologic, and exercise-based interventions ranged between 0.4 and 0.7.
conclusionThis review provides a comprehensive overview and update of the existing literature on interventions that may promote coronary collateralization (CC). In summary, we observed a few pharmacological and non-pharmacological (exercise, electrical stimulation, and enhanced external counterpulsation) interventions that have shown a positive effect on CC. These data provide a framework for more robust trials regarding the proliferation and clinical significance of enhanced CC in cardiovascular outcomes in patients with known or occult CAD.
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