1. Articles from Gregoire Rangé

    1-5 of 5
    1. Increased Exposure to X-Rays During Coronary Angiography and Percutaneous Coronary Interventions Associated with Fractional Flow Reserve Measurement and Endocoronary Imaging Techniques

      Increased Exposure to X-Rays During Coronary Angiography and Percutaneous Coronary Interventions Associated with Fractional Flow Reserve Measurement and Endocoronary Imaging Techniques

      Growing use of fractional flow reserve (FFR) and intracoronary imaging techniques by optical coherence tomography or intravascular ultrasound has raised concerns about additional exposure during coronary angiography and percutaneous coronary interventions (PCIs). Using data from the prospective CRAC-France PCI Prospective Multicentre registry, we sought to evaluate the effect of these new techniques on the radiation dose to patients undergoing coronary procedures. Data on Kerma Area Product ( P KA ), total air kerma (KA r ) and fluoroscopy time from 42 182 coronary procedures were retrospectively compared, using multivariable linear regression, according to whether they included FFR and intracoronary imaging. In coronary angiography ...

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    2. Optical Coherence Tomography to Guide Percutaneous Coronary Intervention of the Left Main Coronary Artery: the LEMON study

      Optical Coherence Tomography to Guide Percutaneous Coronary Intervention of the Left Main Coronary Artery: the LEMON study

      Aims: IVUS is currently recommended by international guidelines to guide left main stem (LMS) PCI. Although OCT resolution outmatches IVUS, this tool is not yet recommended in LMS angioplasty due to the absence of data. This pilot study aimed to analyze the feasibility, safety and impact of OCT-guided LMS PCI. Methods and results: This prospective, multicenter trial investigated whether patients might benefit from OCT-guided PCI for mid/distal LMS according to a pre-specified protocol. The primary endpoint was procedural success defined as follows: residual angiographic stenosis <50% + TIMI 3 flow in all branches + adequate OCT stent expansion (LEMON criteria ...

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    3. Characteristics of stent thrombosis in bifurcation lesions analyzed by optical coherence tomography

      Characteristics of stent thrombosis in bifurcation lesions analyzed by optical coherence tomography

      Aims: This work aimed to investigate a cohort of patients presenting with stent thrombosis (ST) explored by optical coherence tomography (OCT) to identify the underlying mechanical abnormalities in case of bifurcation lesions. Methods and results: The PESTO study was a prospective national registry involving 29 French catheterization facilities. Patients with acute coronary syndromes were prospectively screened for presence of definite ST and analyzed by OCT after culprit lesion reopening.The cohort involved n=120 subjects, including n=21 patients (17.5% of the global PESTO group; median age: 62.6 y; 76% male) with bifurcation lesions. The clinical presentation was ...

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    4. Mechanical abnormalities associated with first and second-generation drug eluting stent thrombosis analyzed by optical coherence tomography in the national PESTO French registry

      Mechanical abnormalities associated with first and second-generation drug eluting stent thrombosis analyzed by optical coherence tomography in the national PESTO French registry

      Background and objectives DES thrombosis may be triggered by different mechanisms that are difficult to identify by angiography alone. This work aimed to investigate and compare the characteristics of stent thrombosis (ST) between 1 st and 2 nd generation drug eluting stents (DES) among a large cohort of patients explored by optical coherence tomography (OCT). Methods and results The PESTO study was a prospective national registry involving 29 French catheterization facilities. Patients with acute coronary syndromes were prospectively screened for presence of definite ST and analyzed by OCT after culprit lesion deocclusion The analysis involved 71 subjects including 34 patients ...

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    5. Mechanisms of stent thrombosis analysed by optical coherence tomography: insights from the national PESTO French registr

      Mechanisms of stent thrombosis analysed by optical coherence tomography: insights from the national PESTO French registr

      Aims Angiography has limited value for identifying the causes of stent thrombosis (ST). We studied a large cohort of patients by optical coherence tomography (OCT) to explore ST characteristics and mechanisms. Methods and results A prospective multicentre registry was screened for patients with confirmed ST. Optical coherence tomography was performed after initial intervention to the culprit lesion (in 69% of cases in a deferred procedure). Stent thrombosis was classified as acute (AST), sub-acute (SAST), late (LST), and very late (VLST). Optical coherence tomography records were analysed in a central core lab. The analysis included 120 subjects aged 61.7 [51 ...

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    1-5 of 5
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    Mechanisms of stent thrombosis analysed by optical coherence tomography: insights from the national PESTO French registr Mechanical abnormalities associated with first and second-generation drug eluting stent thrombosis analyzed by optical coherence tomography in the national PESTO French registry Characteristics of stent thrombosis in bifurcation lesions analyzed by optical coherence tomography Optical Coherence Tomography to Guide Percutaneous Coronary Intervention of the Left Main Coronary Artery: the LEMON study Increased Exposure to X-Rays During Coronary Angiography and Percutaneous Coronary Interventions Associated with Fractional Flow Reserve Measurement and Endocoronary Imaging Techniques New insights from non-invasive imaging: from prospection of skin photodamages to training with mobile application Short-sighted woman assumes debilitating headaches mean she needs new glasses but discovers she has multiple sclerosis Shedding light on the impact of microplastics on lentil seedling growth Comparison of radial peripapillary capillary density results of individuals with and without Helicobacter pylori infection Ai, Oct Operate in Tandem to Detect Plaque Erosion in the Heart Noninvasive, in vivo, characterization of cutaneous metastases using a novel multimodal RCM-OCT imaging device: A case-series Mimickers of punctate inner retinal toxoplasmosis on optical coherence tomography