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Routine use of optical coherence tomography in bioresorbable vascular scaffold implantation

insights on technique optimization and long-term outcomes

Abdelaziz, Hesham K.a,b; Abuomara, Hossamaldin Z.a,b; Ali, Montasir H.a; Eichhofer, Jonasa; Patel, Billala; Saad, Marwanb,c

doi: 10.1097/MCA.0000000000000736
Bioresorbable Scaffolds
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SDC

Background Data from prior studies have shown increased risk of adverse outcomes with bioresorbable vascular scaffolds (BVS) compared with drug-eluting stents.

Objective The objective of this study was to study the long-term outcomes with routine use of optical coherence tomography (OCT) for optimization of BVS implantation.

Patients and methods Clinical, procedural, and outcome data were collected for all patients who received ABSORB BVS between February 2014 and March 2016 in our tertiary center (n=86). Preimplantation and postimplantation OCT was performed in all cases. Outcomes of interest included acute device success and long-term clinical outcomes including cardiac mortality, target vessel myocardial infarction, ischemia-driven target lesion revascularization, and scaffold thrombosis.

Results A total of 86 patients were included (106 lesions, 115 BVS implanted). Mean age was 59.5±10.9 years, with 66% men. Mean lesion length was 25.2±15.6 mm and mean reference vessel diameter was 3.42±0.45 mm. Type B2/C accounted for 40% of the lesions. All scaffold implantations followed the predilation, proper sizing, and postdilation strategy. Of the 115 scaffolds analyzed, 11 (9.5%) required further intervention based on prespecified OCT endpoints. On multivariate regression analysis, complex coronary lesion (type B2/C) was the single independent predictor of OCT use in scaffold optimization (odds ratio=6.3, 95% confidence interval: 1.3–7.8, P=0.02). At a mean follow-up duration of 31±7.1 months, no cases of cardiac mortality, target vessel myocardial infarction, ischemia-driven target lesion revascularization, or scaffold thrombosis were reported.

Conclusion Operators may consider OCT use for optimization of BVS implantation particularly in patients with complex coronary lesions.

aDepartment of Cardiovascular Medicine, Lancashire Cardiac Center, Blackpool Victoria Hospital, Blackpool, UK

bDepartment of Cardiovascular Medicine, Ain Shams University, Cairo, Egypt

cDepartment of Medicine, Division of Cardiovascular Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA

Correspondence to Hesham K. Abdelaziz, MD, PhD, Lancashire Cardiac Center, Blackpool Victoria Hospital, Whinney Heys Road, FY3 8NR Blackpool, UK Tel: +44 012 539 57758; fax: +44 012 539 57845; e-mail: heshamkabdelaziz@gmail.com

Received September 21, 2018

Received in revised form February 5, 2019

Accepted February 24, 2019

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