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Milzi A, Thomsen TÁ, Landi A, Dettori R, Marx N, Kahles F, Escaned J, Mejía-Rentería H, Burgmaier M, Valgimigli M. Diagnostic accuracy of quantitative flow ratio in patients with arrhythmias. EUROINTERVENTION 2024; 20:1039-1041. [PMID: 39155760 PMCID: PMC11317827 DOI: 10.4244/eij-d-24-00144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 05/28/2024] [Indexed: 08/20/2024]
Affiliation(s)
- Andrea Milzi
- Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale (EOC), Università Della Svizzera Italiana, Lugano, Switzerland
- Department of Cardiology, University Hospital of the RWTH Aachen, Aachen, Germany
| | | | - Antonio Landi
- Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale (EOC), Università Della Svizzera Italiana, Lugano, Switzerland
| | - Rosalia Dettori
- Department of Cardiology, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Nikolaus Marx
- Department of Cardiology, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Florian Kahles
- Department of Cardiology, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Javier Escaned
- Interventional Cardiology, Hospital Clínico San Carlos, Madrid, Spain
| | | | - Mathias Burgmaier
- Department of Cardiology, University Hospital of the RWTH Aachen, Aachen, Germany
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, Deggendorf, Germany
| | - Marco Valgimigli
- Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale (EOC), Università Della Svizzera Italiana, Lugano, Switzerland
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Milzi A, Dettori R, Lubberich RK, Reith S, Burgmaier K, Marx N, Burgmaier M. Quantitative Flow Ratio Is Feasible and Accurate Even at Lower Frame Acquisition Rate. Circ Cardiovasc Interv 2023; 16:e013266. [PMID: 37846560 DOI: 10.1161/circinterventions.123.013266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Affiliation(s)
- Andrea Milzi
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Germany (A.M., R.D., R.K.L., N.M., M.B.)
- Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale (EOC), Università Della Svizzera Italiana, Lugano, Switzerland (A.M.)
| | - Rosalia Dettori
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Germany (A.M., R.D., R.K.L., N.M., M.B.)
| | - Richard Karl Lubberich
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Germany (A.M., R.D., R.K.L., N.M., M.B.)
| | - Sebastian Reith
- Department of Cardiology, Angiology and Electrophysiology, St. Franziskus Hospital, Münster, Germany (S.R.)
| | - Kathrin Burgmaier
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, Germany (K.B., M.B.)
| | - Nikolaus Marx
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Germany (A.M., R.D., R.K.L., N.M., M.B.)
| | - Mathias Burgmaier
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Germany (A.M., R.D., R.K.L., N.M., M.B.)
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, Germany (K.B., M.B.)
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Xu H, Qiao S, Cui J, Yuan J, Yang W, Liu R, Wang T, Guan H, Tian T, Zhu F, Wang J, Chang Y, Yang Z, Liu S. Drug-eluting stent and drug-coated balloon for the treatment of de novo diffuse coronary artery disease lesions: A retrospective case series study. Clin Cardiol 2023; 46:1511-1518. [PMID: 37667499 PMCID: PMC10716315 DOI: 10.1002/clc.24140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 08/06/2023] [Accepted: 08/21/2023] [Indexed: 09/06/2023] Open
Abstract
BACKGROUND The hybrid strategy of a combination of drug-eluting stent (DES) and drug-coated balloon (DCB) is promising for the treatment of de novo diffuse coronary artery disease (CAD). HYPOTHESIS To investigate the efficacy and functional results of hybrid strategy. METHODS This case series study included patients treated with a hybrid approach for de novo diffuse CAD between February 2017 and November 2021. Postprocedural quantitative flow ratio (QFR) was used to evaluate the functional results. The primary endpoint was procedural success rate. The secondary endpoints were major adverse cardiovascular events (MACE) including cardiac death, myocardial infarction (MI) (including peri-procedural MI), and target vessel revascularization. RESULTS A total of 109 patients with 114 lesions were treated. DES and DCB were commonly used in larger proximal segments and smaller distal segments, respectively. The mean QFR value was 0.9 ± 0.1 and 105 patients (96.3%) had values >0.8 in all the treated vessels. Procedural success was achieved in 106 (97.2%) patients. No cases of cardiac death were reported at a median follow-up of 19 months. Spontaneous MI occurred in three (2.8%) patients and target vessel revascularization in six (5.5%) patients. Estimated 2-year rate of MACE excluding peri-procedural MI was higher in the group with lower QFR value (12.1 ± 5.7% vs. 5.6 ± 4.4%, log-rank p = .035) (cut-off value 0.9). CONCLUSION Hybrid strategy is a promising approach for the treatment of de novo diffuse CAD. Postprocedural QFR has some implications for prognosis and may be helpful in guiding this approach.
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Affiliation(s)
- Haobo Xu
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Shubin Qiao
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Jingang Cui
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Jiansong Yuan
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Weixian Yang
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Rong Liu
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Tianjie Wang
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Hao Guan
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Tao Tian
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Fasheng Zhu
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Juan Wang
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Yue Chang
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
| | - Zhuoxuan Yang
- Department of CardiologyYuncheng Central HospitalShanxiPeople's Republic of China
| | - Shengwen Liu
- Department of CardiologyFuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical SciencesBeijingPeople's Republic of China
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Milzi A, Dettori R, Lubberich RK, Reith S, Frick M, Burgmaier K, Marx N, Burgmaier M. Coronary microvascular dysfunction is a hallmark of all subtypes of MINOCA. Clin Res Cardiol 2023:10.1007/s00392-023-02294-1. [PMID: 37658913 DOI: 10.1007/s00392-023-02294-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 08/21/2023] [Indexed: 09/05/2023]
Abstract
INTRODUCTION Myocardial infarction without obstructive coronary artery disease (MINOCA) is a heterogeneous clinical condition presenting with myocardial necrosis not due to an obstruction of a major coronary artery. Recently, a relevant role of coronary microvascular dysfunction (CMD) in the pathogenesis of MINOCA has been suggested; however, data on this are scarce. Particularly, it is unclear if CMD is equally present in all subtypes of MINOCA or differentially identifies one or more of these conditions. Therefore, the aim of this study was to assess CMD in all three coronary vessels of MINOCA patients, relating it with the clinical subtype. METHODS We retrospectively assessed coronary microvascular function in all three coronary territories by means of angiography-based index of microvascular resistance (aIMR) in 92 patients (64 with working diagnosis of MINOCA, 28 control patients). To further assess the association of CMD with MINOCA subtypes, MINOCA patients were subdivided according to clinical data in coronary cause (n = 13), takotsubo (n = 13), infiltrative or inflammatory cardiomyopathy (n = 9) or unclear (n = 29). RESULTS Patients with working diagnosis of MINOCA showed a significantly elevated average aIMR compared to control patients (30.5 ± 7.6 vs. 22.1 ± 5.9, p < 0.001) as a marker of a relevant CMD; these data were consistent in all vessels. Among MINOCA subtypes, no significant difference in average aIMR could be detected between patients with coronary cause (33.2 ± 6.6), takotsubo cardiomyopathy (29.2 ± 6.9), infiltrative or inflammatory cardiomyopathy (28.1 ± 6.8) or unclear cause (30.6 ± 8.5; p = 0.412). Interestingly, aIMR was significantly elevated in the coronary vessel supplying the diseased myocardium compared with other vessels (31.9 ± 11.4 vs. 27.8 ± 8.2, p = 0.049). CONCLUSION Coronary microvascular dysfunction is a hallmark of all MINOCA subtypes. This study adds to the pathophysiological understanding of MINOCA and sheds light into the role of CMD in MINOCA.
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Affiliation(s)
- Andrea Milzi
- Department of Internal Medicine I, University Hospital of the RWTH, Aachen, Germany.
| | - Rosalia Dettori
- Department of Internal Medicine I, University Hospital of the RWTH, Aachen, Germany
| | | | - Sebastian Reith
- Department of Cardiology, Angiology and Electrophysiology, St. Franziskus Hospital, Münster, Germany
| | - Michael Frick
- Department of Internal Medicine I, University Hospital of the RWTH, Aachen, Germany
| | - Kathrin Burgmaier
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, Deggendorf, Germany
| | - Nikolaus Marx
- Department of Internal Medicine I, University Hospital of the RWTH, Aachen, Germany
| | - Mathias Burgmaier
- Department of Internal Medicine I, University Hospital of the RWTH, Aachen, Germany
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, Deggendorf, Germany
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Chu J, Lin H, Yan W, Yuan D, Lai Y, Liu X. Angiographic quantitative flow ratio in acute coronary syndrome: beyond a tool to define ischemia-causing stenosis-a literature review. Cardiovasc Diagn Ther 2022; 12:892-907. [PMID: 36605069 PMCID: PMC9808114 DOI: 10.21037/cdt-22-334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 11/15/2022] [Indexed: 12/12/2022]
Abstract
Background and Objective Numerous studies have demonstrated the safety and effectiveness of physiology-guided coronary revascularization in chronic coronary syndrome, resulting in a high level of guideline recommendation for these patients. However, the application of coronary physiology in acute coronary syndrome (ACS), especially in the acute phase of myocardial infarction, remains challenging. Over the last decade, the number of novel physiological indices derived from the computation of angiography have been developed as alternatives to pressure wire-based fractional flow reserve. Among these angiography-based indices, the quantitative flow ratio (QFR) is undoubtedly the one with the largest amount of data cumulated so far. In this article, we aim to review the related studies that describe efforts to investigate the diagnostic role of QFR and discuss perspectives for its current and future applications in the setting of the ACS. Methods A literature search was performed on the electronic databases, including PubMed, Google Scholar and Web of Science covering publications in English up to May 2022. Key Content and Findings An emerging body of evidence has validated the diagnostic accuracy of angiography-derived QFR for the assessment of functional severity of coronary stenosis in both acute and chronic coronary syndromes. In parallel, multiple technologies, i.e., QFR-based pullback pressure gradient index, angiography-derived index of microcirculatory resistance and intravascular imaging-based morphofunctional evaluation methods, have been proposed, allowing operators to easily obtained physiological data of micro and macro-circulation, together with atherosclerotic lesion characteristics in catheterization laboratories. More recently, promising results supporting the clinical value of QFR in guiding revascularization and predicting outcomes for ACS patients have been published. Conclusions Angiography-based QFR bears the potential of a wider adoption of coronary physiology assessment in the ACS setting due to its quicker and less-invasive nature. However, the current evidence mainly derived from retrospective studies or post-hoc analyses of prospective trials. Future studies are needed to further explore the benefits of QFR-guided revascularization on outcomes in ACS.
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Affiliation(s)
- Jiapeng Chu
- Department of Cardiology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Hao Lin
- Department of Cardiology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Wenwen Yan
- Department of Cardiology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Deqiang Yuan
- Department of Cardiology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yan Lai
- Department of Cardiology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xuebo Liu
- Department of Cardiology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
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Milzi A, Dettori R, Lubberich RK, Burgmaier K, Marx N, Reith S, Burgmaier M. Coronary microvascular dysfunction as assessed by angiography-derived index of microvascular resistance co-localizes with and may explain the presence of ischemia in stress-cardiac magnetic resonance imaging in the absence of coronary artery disease. Front Cardiovasc Med 2022; 9:1060764. [PMID: 36505374 PMCID: PMC9729244 DOI: 10.3389/fcvm.2022.1060764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 11/07/2022] [Indexed: 11/26/2022] Open
Abstract
Introduction Ischemia with no obstructive coronary disease (INOCA) is a frequent phenomenon in the cath lab. A possible cause is coronary microvascular dysfunction (CMD), which may be assessed by invasive testing with possible complications; therefore, less invasive approaches have emerged, such as the angiography-derived index of microvascular resistance (aIMR). The aim of our study was to investigate the association of single-vessel aIMR as a measure of CMD with areas of INOCA in stress testing. Methods We measured aIMR in 286 vessels from 102 patients undergoing both stress cMRI and coronary angiography. Groups were (a) INOCA group (93 vessels, 32 patients); (b) coronary artery disease (CAD) control group (116 vessels, 42 patients) with ischemia due to relevant stenosis; and (c) control group (77 vessels, 28 patients) without ischemia or relevant stenosis. Results INOCA patients presented higher mean aIMR (28.3 ± 5.7) compared to both CAD patients (17.4 ± 5.7, p < 0.001) and controls (22.1 ± 5.9, p < 0.001). Furthermore, in INOCA patients aIMR was significantly increased (33.0 ± 8.1 vs. 25.8 ± 6.3, p = 0.021) in vessels with vs. without ischemia. Single vessel aIMR presented a very good diagnostic efficiency in detecting INOCA [AUC 0.865 (0.804-0.925), optimal cut-off 27.1, p < 0.001]. Conclusion CMD, as assessed by 3-vessel aIMR, co-localizes with and may explain the presence of ischemia in stress-cMRI in INOCA.
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Affiliation(s)
- Andrea Milzi
- Department of Internal Medicine I, University Hospital RWTH Aachen, Aachen, Germany,*Correspondence: Andrea Milzi,
| | - Rosalia Dettori
- Department of Internal Medicine I, University Hospital RWTH Aachen, Aachen, Germany
| | | | - Kathrin Burgmaier
- Department of Pediatrics, University Hospital of Cologne, Cologne, Germany,Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, Deggendorf, Germany
| | - Nikolaus Marx
- Department of Internal Medicine I, University Hospital RWTH Aachen, Aachen, Germany
| | - Sebastian Reith
- Department of Internal Medicine I, University Hospital RWTH Aachen, Aachen, Germany,Department of Cardiology, Angiology and Electrophysiology, St. Franziskus-Hospital, Münster, Germany
| | - Mathias Burgmaier
- Department of Internal Medicine I, University Hospital RWTH Aachen, Aachen, Germany,Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, Deggendorf, Germany
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Milzi A, Dettori R, Lubberich RK, Burgmaier K, Marx N, Reith S, Burgmaier M. Quantitative Flow Ratio Is Related to Anatomic Left Main Stem Lesion Parameters as Assessed by Intravascular Imaging. J Clin Med 2022; 11:jcm11206024. [PMID: 36294345 PMCID: PMC9604622 DOI: 10.3390/jcm11206024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/29/2022] [Accepted: 10/10/2022] [Indexed: 11/16/2022] Open
Abstract
Introduction: Previously, an association between anatomic left main stem (LMS) lesion parameters, as described by intravascular ultrasound (IVUS) and fractional flow reserve (FFR), was shown. Quantitative flow ratio (QFR) is a novel, promising technique which can assess functional stenosis relevance based only on angiography. However, as little is known about the relationship between anatomic LMS parameters and QFR, it was thus investigated in this study. Methods: In 53 patients with LMS disease, we tested the association between anatomic assessment using OCT (n = 28) or IVUS (n = 25) on the one hand and functional assessment as determined by QFR on the other hand. LMS-QFR was measured using a dedicated approach, averaging QFR over left anterior descending (LAD) and circumflex (LCX) and manually limiting segment of interest to LMS. Results: The minimal luminal area of the LMS (LMS-MLA) as measured by intravascular imaging showed a consistent correlation with QFR (R = 0.61, p < 0.001). QFR could predict a LMS-MLA < 6 mm2 with very good diagnostic accuracy (AUC 0.919) and a LMS-MLA < 4.5 mm2 with good accuracy (AUC 0.798). Similar results were obtained for other stenosis parameters. Conclusions: QFR might be a valuable tool to assess LMS disease. Further studies focusing on patient outcomes are needed to further validate the effectiveness of this approach.
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Affiliation(s)
- Andrea Milzi
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Germany
- Correspondence: ; Tel.: +49-241-8036098
| | - Rosalia Dettori
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Germany
| | - Richard Karl Lubberich
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Germany
| | - Kathrin Burgmaier
- Department of Pediatrics, Faculty of Medicine, University of Cologne, University Hospital of Cologne, 50931 Cologne, Germany
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, 94469 Deggendorf, Germany
| | - Nikolaus Marx
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Germany
| | - Sebastian Reith
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Germany
| | - Mathias Burgmaier
- Department of Internal Medicine I, University Hospital of the RWTH Aachen, Pauwelsstr. 30, 52074 Aachen, Germany
- Faculty of Applied Healthcare Science, Deggendorf Institute of Technology, 94469 Deggendorf, Germany
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Huang Y, Lin Z, Wu Q, Chen L, Yang J, Deng H, Liu Y, Xie N. Morphometric Assessment for Functional Evaluation of Coronary Stenosis with Optical Coherence Tomography and the Optical Flow Ratio in a Vessel with Single Stenosis. J Clin Med 2022; 11:5198. [PMID: 36079128 PMCID: PMC9457468 DOI: 10.3390/jcm11175198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/19/2022] [Accepted: 08/26/2022] [Indexed: 02/05/2023] Open
Abstract
Objectives: The study aimed to evaluate the diagnostic performance of optical coherence tomography (OCT) in identifying functionally significant coronary stenosis in a vessel with single stenosis. Background: The OCT-based morphofunctional computational method for deriving the optical flow ratio (OFR) has diagnostic value, as it can identify the functional severity of coronary stenosis, but the ability of the OFR to aid the OCT in determining coronary stenosis hemodynamics in single-stenosis lesion remains unclear. Methods: 74 vessels with single stenosis were studied in 69 patients; all cases were performed through OCT and quantitative flow ratio (QFR), and OCT images were used to perform OFR. Results: Among vessels with single stenosis, OFR showed a good correlation with QFR (r = 0.86; p < 0.001). Taking QFR as the standard, the vessel-level diagnosis accuracy, sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of OFR were 90% (95% CI: 81 to 96), 94% (95% CI: 77 to 99), 88% (95% CI: 74 to 96), 85% (95% CI: 68 to 94) and 95% (95% CI: 82 to 99), respectively. Among vessels with OFR/QFR concordance, both the minimum lumen area (MLA) and minimum lumen diameter (MLD) showed excellent diagnostic efficiency (MLA: area under the curve (AUC) = 0.92, 95% CI: 0.85 to 0.98, p < 0.001; MLD: AUC = 0.93, 95% CI: 0.86 to 0.98, p < 0.001) in determining the functional significance of coronary stenosis in a single stenosis lesion, and the best cutoff values were 1.55 mm2 and 1.40 mm. Conclusions: OFR has a good correlation with QFR. OCT-measured MLA and MLD have excellent diagnostic efficiency in identifying the hemodynamic significance of coronary stenosis in a vessel with single stenosis.
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Affiliation(s)
- Yuming Huang
- Department of Catheterization Lab, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Zehuo Lin
- Shantou University Medical College, Shantou 515041, China
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Quanmin Wu
- Department of Catheterization Lab, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Liansheng Chen
- Department of Catheterization Lab, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Junqing Yang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Huiliang Deng
- Department of Catheterization Lab, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Yuanhui Liu
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Nianjin Xie
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
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Functional Evaluation of Coronary Stenosis: is Quantitative Flow Ratio a Step Forward? COR ET VASA 2022. [DOI: 10.33678/cor.2022.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Dettori R, Frick M, Burgmaier K, Lubberich RK, Hellmich M, Marx N, Reith S, Burgmaier M, Milzi A. Quantitative Flow Ratio Is Associated with Extent and Severity of Ischemia in Non-Culprit Lesions of Patients with Myocardial Infarction. J Clin Med 2021; 10:jcm10194535. [PMID: 34640551 PMCID: PMC8509261 DOI: 10.3390/jcm10194535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 11/16/2022] Open
Abstract
Quantitative flow ratio (QFR) is a novel method to assess the relevance of coronary stenoses based only on angiographic projections. We could previously show that QFR is able to predict the hemodynamic relevance of non-culprit lesions in patients with myocardial infarction. However, it is still unclear whether QFR is also associated with the extent and severity of ischemia, which can effectively be assessed with imaging modalities such as cardiac magnetic resonance (CMR). Thus, our aim was to evaluate the associations of QFR with both extent and severity of ischemia. We retrospectively determined QFR in 182 non-culprit coronary lesions from 145 patients with previous myocardial infarction, and compared it with parameters assessing extent and severity of myocardial ischemia in staged CMR. Whereas ischemic burden in lesions with QFR > 0.80 was low (1.3 ± 5.5% in lesions with QFR ≥ 0.90; 1.8 ± 7.3% in lesions with QFR 0.81–0.89), there was a significant increase in ischemic burden in lesions with QFR ≤ 0.80 (16.6 ± 15.6%; p < 0.001 for QFR ≥ 0.90 vs. QFR ≤ 0.80). These data could be confirmed by other parameters assessing extent of ischemia. In addition, QFR was also associated with severity of ischemia, assessed by the relative signal intensity of ischemic areas. Finally, QFR predicts a clinically relevant ischemic burden ≥ 10% with good diagnostic accuracy (AUC 0.779, 95%-CI: 0.666–0.892, p < 0.001). QFR may be a feasible tool to identify not only the presence, but also extent and severity of myocardial ischemia in non-culprit lesions of patients with myocardial infarction.
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Affiliation(s)
- Rosalia Dettori
- Department of Cardiology, University Hospital of the RWTH Aachen, D-52070 Aachen, Germany; (R.D.); (M.F.); (R.K.L.); (N.M.); (S.R.); (M.B.)
| | - Michael Frick
- Department of Cardiology, University Hospital of the RWTH Aachen, D-52070 Aachen, Germany; (R.D.); (M.F.); (R.K.L.); (N.M.); (S.R.); (M.B.)
| | - Kathrin Burgmaier
- Department of Pediatrics, University Hospital Cologne, D-50937 Cologne, Germany;
| | - Richard Karl Lubberich
- Department of Cardiology, University Hospital of the RWTH Aachen, D-52070 Aachen, Germany; (R.D.); (M.F.); (R.K.L.); (N.M.); (S.R.); (M.B.)
| | - Martin Hellmich
- Institute of Medical Statistics and Computational Biology (IMSB), Faculty of Medicine and University Hospital Cologne, University of Cologne, D-50937 Cologne, Germany;
| | - Nikolaus Marx
- Department of Cardiology, University Hospital of the RWTH Aachen, D-52070 Aachen, Germany; (R.D.); (M.F.); (R.K.L.); (N.M.); (S.R.); (M.B.)
| | - Sebastian Reith
- Department of Cardiology, University Hospital of the RWTH Aachen, D-52070 Aachen, Germany; (R.D.); (M.F.); (R.K.L.); (N.M.); (S.R.); (M.B.)
| | - Mathias Burgmaier
- Department of Cardiology, University Hospital of the RWTH Aachen, D-52070 Aachen, Germany; (R.D.); (M.F.); (R.K.L.); (N.M.); (S.R.); (M.B.)
| | - Andrea Milzi
- Department of Cardiology, University Hospital of the RWTH Aachen, D-52070 Aachen, Germany; (R.D.); (M.F.); (R.K.L.); (N.M.); (S.R.); (M.B.)
- Correspondence:
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OCT-Derived Plaque Morphology and FFR-Determined Hemodynamic Relevance in Intermediate Coronary Stenoses. J Clin Med 2021; 10:jcm10112379. [PMID: 34071299 PMCID: PMC8197966 DOI: 10.3390/jcm10112379] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/17/2021] [Accepted: 05/21/2021] [Indexed: 12/19/2022] Open
Abstract
Background: optical coherence tomography (OCT) might allow identifying lesion features reportedly associated with plaque vulnerability and increased risk of clinical events. Previous studies on correlation between OCT and functional lesion significance indices reported contradictory results, yet integration of complementary information from both modalities is gaining increased interest. The aim of the study was to compare plaque morphology using OCT in hemodynamically relevant vs. non-relevant lesions by fractional flow reserve (FFR). Methods: consecutive patients with intermediate grade coronary stenoses by angiography were evaluated by both FFR and OCT in this single-center study. Stenoses were labeled hemodynamically relevant in case of the FFR ≤ 0.80. Minimal lumen area (MLA), fibrous cap thickness (FCT), minimal cap thickness over the calcium, angle of the calcium, and necrotic core within the lesions were evaluated. Results: a total of 105 patients (124 vessels) were analyzed. Of them, 65 patients were identified with at least one lesion identified as hemodynamically relevant by FFR (72 vessels, 58.1%). Lesions with FFR ≤0.80 presented with lower mean and minimal lumen area (3.46 ± 1.29 vs. 4.65 ± 2.19, p =0.001 and 1.84 ± 0.97 vs. 2.66 ± 1.40, p = 0.001) compared to patients with FFR > 0.80. No differences were found between groups in the mean and minimal FCT, mean, and maximal necrotic core, calcium angle, as well as the overall rate of calcified and lipid plaques. Conclusion: hemodynamic relevance of intermediate grade lesions correlated moderately with the luminal assessment by OCT. No differences were identified in the plaque morphology between relevant and non-relevant coronary stenoses by FFR.
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