Prevalence, indications and management of balloon uncrossable chronic total occlusions: Insights from a contemporary multicenter US registry

Document Type

Article

Publication Date

7-1-2017

Publication Title

Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions

Keywords

Aged, Angioplasty, Balloon, Coronary, Atherectomy, Coronary, Chronic Disease, Coronary Angiography, Coronary Occlusion, Female, Humans, Lasers, Excimer, Male, Middle Aged, Prevalence, Registries, Risk Factors, Stents, Time Factors, Treatment Outcome, United States

Abstract

BACKGROUND: Balloon uncrossable lesions can be challenging to treat, requiring specialized techniques and equipment.

METHODS: We examined the prevalence, clinical and angiographic characteristics, management and procedural outcomes of balloon uncrossable lesions in a multicenter chronic total occlusion (CTO) percutaneous coronary intervention (PCI) registry.

RESULTS: Between 2012 and 2016, 718 CTO PCIs (in which the occlusion was successfully crossed with a guidewire) were performed in 701 patients at 11 US centers. Mean age was 65.6 ± 10 years and 84% of the patients were men. Balloon uncrossable lesions represented 9% of all CTOs. Balloon uncrossable CTOs had more moderate/severe calcification (82% vs. 52%, P < 0.0001), moderate/severe tortuosity (61% vs. 35% P < 0.0001) and higher J-CTO score (2.95 ± 1.32 vs. 2.43 ± 1.23, P = 0.005) as compared with the remaining lesions. Technical and procedural success was significantly lower for balloon uncrossable lesions (90.5% vs. 98.3%, P < 0.0001 and 88.9% vs. 96.6% P = 0.004), respectively, but the incidence of major adverse events was similar (1.6% vs. 2.2%, P = 0.751). Balloon uncrossable lesions required longer procedure (208 [interquartile range: 135, 258] vs. 135 [94, 194] min, P < 0.0001) and fluoroscopy (77 [52, 100] vs. 45 min [27, 75], P < 0.0001) time. Techniques used to treat balloon uncrossable lesions included balloon-assisted microdissection (23%), excimer laser atherectomy (18%), and rotational atherectomy (16%). Excimer laser atherectomy and balloon-assisted microdissection were associated with the highest technical and procedural success rates.

CONCLUSIONS: Balloon uncrossable CTOs are common, are associated with high rates of technical failure, and require specialized techniques for successful treatment. © 2016 Wiley Periodicals, Inc.

Medical Subject Headings

Aged; Angioplasty, Balloon, Coronary; Atherectomy, Coronary; Chronic Disease; Coronary Angiography; Coronary Occlusion; Female; Humans; Lasers, Excimer; Male; Middle Aged; Prevalence; Registries; Risk Factors; Stents; Time Factors; Treatment Outcome; United States

PubMed ID

27650935

Volume

90

Issue

1

First Page

12

Last Page

20

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