Key result
Retrograde BASE enables successful CTO PCI in a case with impenetrable proximal and distal caps.
Why the study?
When both the proximal and distal caps of a chronic total occlusion are impenetrable, very few options remain to recanalize the vessel during PCI.
Answers are grounded in this paper and cite their sources.
Retrograde BASE provides an additional option for successful recanalization in complex CTO PCI with impenetrable proximal and distal caps.
An impenetrable proximal cap complicates chronic total occlusion (CTO) percutaneous coronary intervention (PCI) and is often an indication for the retrograde approach. When also the distal cap of the CTO is impenetrable, very few options remain to recanalize the vessel. We report a case of retrograde balloon‐assisted subintimal entry (BASE), enabling successful CTO PCI in a case with impenetrable proximal and distal caps.
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Ng et al. (2026) studied this question. Retrograde balloon‐assisted subintimal entry (BASE) successfully facilitated chronic total occlusion PCI in a case with impenetrable proximal and distal caps.
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