Angiographic and clinical outcomes after recanalization of coronary chronic total occlusions with the Orsiro sirolimus-eluting stent compared with the resolute zotarolimus-eluting stent

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Abstract

Objective

The third generation drug eluting Orsiro stent had shown already promising results in non-complex lesions.

Background

We evaluated angiographic and 24 month clinical results of the sirolimus eluting Orsiro stents (O-SES) after recanalization of coronary chronic total occlusions (CTO). Results were compared with the zotarolimus eluting Resolute Integrity (R-ZES).

Methods

In a prospective series 57 patients were treated with a R-ZES followed by 74 patients treated with a O-SES stent. Angiographic follow up after 9 months and clinical follow-up after 12 and 24 months was performed.

Results

In-stent late lumen loss was 0.24±0.53 mm for the O-SES compared with 0.59±0.72 (P=0.01) for R-ZES. Rates for TLR were similar (O-SES 10.0% versus R-ZES 11.1%, P=0.84). There was no definite stent thrombosis.

Conclusion

The O-SES resulted in a significant lower late lumen loss but with similar clinical results up to 24 month compared to the R-ZES after treatment of CTO lesions.

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