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Background
Proximal cap ambiguity is a key parameter in the global chronic total occlusion (CTO) percutaneous coronary intervention (PCI) crossing algorithm.
Methods
We examined the baseline characteristics and procedural outcomes of 9718 CTO PCIs performed in 9498 patients at 41 US and non‐US centers between 2012 and 2022.
Results
Proximal cap ambiguity was present in 35% of CTO lesions. Patients...
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