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05.11.2015 | Original Paper | Ausgabe 5/2016 Open Access

Clinical Research in Cardiology 5/2016

Comparative assessment of the antirestenotic efficacy of two paclitaxel drug-eluting balloons with different coatings in the treatment of in-stent restenosis

Clinical Research in Cardiology > Ausgabe 5/2016
Freek Nijhoff, Pieter R. Stella, Maartje S. Troost, Anouar Belkacemi, Hendrik M. Nathoe, Michiel Voskuil, Mariam Samim, Pieter A. Doevendans, Pierfrancesco Agostoni
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Electronic supplementary material

The online version of this article (doi:10.​1007/​s00392-015-0934-0) contains supplementary material, which is available to authorized users.



Preclinical investigations have suggested that coating technology is crucial for the efficacy of drug-eluting balloons (DEB). Aim of this study is to compare the antirestenotic efficacy of two paclitaxel DEB with different coatings in the treatment of in-stent restenosis (ISR) by means of a morphological and functional assessment.


In a single center, prospective, non-randomized study, the shellac-paclitaxel coated DIOR, and the urea-paclitaxel coated IN.PACT Falcon were compared in the setting of ISR. Quantitative angiography, fractional flow reserve (FFR), and optical coherence tomography (OCT) were performed at baseline, postprocedure and 6-month follow-up. Main endpoints were QCA, FFR and OCT-based parameters of restenosis.


Forty-five patients were included, 20 (44 %) received treatment with the DIOR and 25 (56 %) with the IN.PACT Falcon. Angiographic and device success were 100 and 90 % for the DIOR, and 100 and 92 % for the IN.PACT Falcon, respectively. After 6-months, in-segment late lumen loss (−0.03 ± 0.43 vs. 0.36 ± 0.48 mm, p = 0.014) and diameter stenosis (30.7 ± 16.2 vs. 41.3 ± 22.6 %, p = 0.083) were lower for the IN.PACT Falcon. FFR distal of the stent was significantly higher in the IN.PACT Falcon group (0.92 ± 0.07 vs. 0.84 ± 0.13, p = 0.029) and in-stent FFR gradient was lower (0.05 ± 0.05 vs. 0.13 ± 0.12, p = 0.002). Between postprocedure and follow-up, a 16 % decrease in neointimal volume was observed for the IN.PACT Falcon, while a 30 % increase was observed for the DIOR (p = 0.006).


The IN.PACT Falcon DEB showed higher antirestenotic efficacy than the DIOR in the treatment of ISR, demonstrating that DEB with an excipient-based coating is not equally effective.

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Supplementary material 1 (PDF 221 kb)
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