Hiroshi Yamaguchi1, Ryo Arikawa2, Junichiro Takaoka2, Akihiro Miyamura2, Nobuhiko Atsuchi2, Toshiko Ninomiya2, Yoshihiko Atsuchi2, Mitsuru Ohishi3, Mitsuyasu Terashima4, Hideaki Kaneda5. 1. Division of Cardiology, Tenyoukai Central Hospital, Izumi-cho, Kagoshima city, Kagoshima, Japan. Electronic address: yhclinic@po5.synapse.ne.jp. 2. Division of Cardiology, Tenyoukai Central Hospital, Izumi-cho, Kagoshima city, Kagoshima, Japan. 3. Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Science, Kagoshima University, Kagoshima, Japan. 4. Department of Cardiology, Toyohashi Heart Center, Toyohashi, Japan. 5. Okinaka Memorial Institute for Medical Research, Tokyo, Japan; Translational Research Informatics Center, Foundation for Biomedical Research and Innovation, Kobe, Japan.
Abstract
OBJECTIVES: To gain insight into the pathophysiology of late drug-eluting stent (DES) restenosis. BACKGROUND: Restenosis of DES has a different time course from that of bare metal stents. METHODS: Patients who underwent follow-up coronary angiography (CAG) twice (six to nine months and 18 to 24 months) after DES implantation were examined using optical coherence tomography (OCT). All lesions with target lesion revascularization at first follow-up were excluded. Late catch-up was defined as lesions that progressed from less than 50% diameter stenosis (DS) at the first CAG to more than 50% DS at the second CAG. Lesions with the late catch-up were further divided into two groups; lesions with jump-up (less than 25% DS at the first CAG) and lesions with gradual progression (25-50% DS at the first CAG). RESULTS: Of the 25 patients who had late ISR, 23 patients (10 jump-up/13 gradual progression) were examined with OCT at late follow-up and enrolled in this study. In the qualitative OCT assessment, each ratio of homogeneous, layered, heterogeneous with or without attenuation tissue morphologies were in jump-up group, and gradual progression group were 0% and 15%, 0% and 23%, and 60% and 8%, and 40% and 54%, respectively. All of jump-up group showed heterogeneous restenotic tissue, while 62% of gradual progression group showed heterogeneous restenotic tissue (P = .04). CONCLUSIONS: These findings suggest different pathophysiology of the late catch-up after DES implantation between the jump-up and gradual progression groups.
OBJECTIVES: To gain insight into the pathophysiology of late drug-eluting stent (DES) restenosis. BACKGROUND: Restenosis of DES has a different time course from that of bare metal stents. METHODS:Patients who underwent follow-up coronary angiography (CAG) twice (six to nine months and 18 to 24 months) after DES implantation were examined using optical coherence tomography (OCT). All lesions with target lesion revascularization at first follow-up were excluded. Late catch-up was defined as lesions that progressed from less than 50% diameter stenosis (DS) at the first CAG to more than 50% DS at the second CAG. Lesions with the late catch-up were further divided into two groups; lesions with jump-up (less than 25% DS at the first CAG) and lesions with gradual progression (25-50% DS at the first CAG). RESULTS: Of the 25 patients who had late ISR, 23 patients (10 jump-up/13 gradual progression) were examined with OCT at late follow-up and enrolled in this study. In the qualitative OCT assessment, each ratio of homogeneous, layered, heterogeneous with or without attenuation tissue morphologies were in jump-up group, and gradual progression group were 0% and 15%, 0% and 23%, and 60% and 8%, and 40% and 54%, respectively. All of jump-up group showed heterogeneous restenotic tissue, while 62% of gradual progression group showed heterogeneous restenotic tissue (P = .04). CONCLUSIONS: These findings suggest different pathophysiology of the late catch-up after DES implantation between the jump-up and gradual progression groups.
Authors: Annunziata Nusca; Michele Mattia Viscusi; Francesco Piccirillo; Aurelio De Filippis; Antonio Nenna; Cristiano Spadaccio; Francesco Nappi; Camilla Chello; Fabio Mangiacapra; Francesco Grigioni; Massimo Chello; Gian Paolo Ussia Journal: Life (Basel) Date: 2022-03-08