1
|
He J, Bian X, Zhang R, Yuan S, Guan C, Zou T, Liu L, Song C, Xie L, Wang H, Qiao Z, Yin D, Xu B, Dou K. Impact of Relative Improvement in Quantitative Flow Ratio on Clinical Outcomes After Percutaneous Coronary Intervention - A Subanalysis of the PANDA III Trial. Circ J 2024; 88:921-930. [PMID: 38143084 DOI: 10.1253/circj.cj-22-0743] [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] [Indexed: 12/26/2023]
Abstract
BACKGROUND The clinical impact of relative improvements in coronary physiology in patients receiving percutaneous coronary intervention (PCI) for coronary artery disease (CAD) remains undetermined.Methods and Results: The quantitative flow ratio (QFR) recovery ratio (QRR) was calculated in 1,424 vessels in the PANDA III trial as (post-PCI QFR-pre-PCI QFR)/(1-pre-PCI QFR). The primary endpoint was the 2-year vessel-oriented composite endpoint (VOCE; a composite of vessel-related cardiac death, vessel-related non-procedural myocardial infarction, and ischemia-driven target vessel revascularization). Study vessels were dichotomously stratified according to the optimal QRR cut-off value. During the 2-year follow-up, 41 (2.9%) VOCEs occurred. Low (<0.86) QRR was associated with significantly higher rates of 2-year VOCEs than high (≥0.86) QRR (6.6% vs. 1.4%; adjusted hazard ratio [aHR] 5.05; 95% confidence interval [CI] 2.53-10.08; P<0.001). Notably, among vessels with satisfactory post-procedural physiological results (post-PCI QFR >0.89), low QRR also conferred an increased risk of 2-year VOCEs (3.7% vs. 1.4%; aHR 3.01; 95% CI 1.30-6.94; P=0.010). Significantly better discriminant and reclassification performance was observed after integrating risk stratification by QRR and post-PCI QFR to clinical risk factors (area under the curve 0.80 vs. 0.71 [P=0.010]; integrated discrimination improvement 0.05 [P<0.001]; net reclassification index 0.64 [P<0.001]). CONCLUSIONS Relative improvement of coronary physiology assessed by QRR showed applicability in prognostication. Categorical classification of coronary physiology could provide information for risk stratification of CAD patients.
Collapse
Affiliation(s)
- Jining He
- State Key Laboratory of Cardiovascular Disease
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Xiaohui Bian
- State Key Laboratory of Cardiovascular Disease
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Rui Zhang
- State Key Laboratory of Cardiovascular Disease
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Sheng Yuan
- State Key Laboratory of Cardiovascular Disease
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Changdong Guan
- Catheterization Laboratories, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Tongqiang Zou
- Catheterization Laboratories, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | | | - Chenxi Song
- State Key Laboratory of Cardiovascular Disease
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Lihua Xie
- Catheterization Laboratories, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Haoyu Wang
- State Key Laboratory of Cardiovascular Disease
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Zheng Qiao
- State Key Laboratory of Cardiovascular Disease
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Dong Yin
- State Key Laboratory of Cardiovascular Disease
- Coronary Heart Disease Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Bo Xu
- Catheterization Laboratories, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
- National Clinical Research Center for Cardiovascular Diseases
| | - Kefei Dou
- State Key Laboratory of Cardiovascular Disease
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| |
Collapse
|
2
|
Ahn JM, Kang DY, Kim JH, Choi Y, Kim H, Lee J, Park DW, Park SJ. Prognostic Value of Poststenting Fractional Flow Reserve After Imaging-Guided Optimal Stenting. JACC Cardiovasc Interv 2024; 17:907-916. [PMID: 38599694 DOI: 10.1016/j.jcin.2024.01.313] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 12/29/2023] [Accepted: 01/30/2024] [Indexed: 04/12/2024]
Abstract
BACKGROUND Prognostic value of poststenting fractional flow reserve (FFR) remains uncertain in patients undergoing an imaging-guided optimal stenting strategy. OBJECTIVES The authors evaluated the prognostic value of poststenting FFR according to the intracoronary imaging-guided lesion preparation, stent sizing, and postdilation (iPSP) strategy to optimize stent outcomes. METHODS Poststenting FFR assessment was performed in 1,108 lesions in 1,005 patients from the IRIS-FFR registry. The primary outcome was target vessel failure (TVF), a composite of cardiac death, target vessel myocardial infarction, and target vessel revascularization at 5 years. RESULTS At the index procedure, 326 lesions (29.4%) were treated using all 3 parts of the iPSP strategy. In the overall population, poststenting FFR was significantly associated with the risk of TVF at 5 years (per 0.01 increase of FFR, adjusted HR [aHR]: 0.94; 95% CI: 0.90-0.98; P = 0.004). Significant interaction was detected between poststenting FFR and the iPSP strategy on the risk of TVF at 5 years (P = 0.045 for interaction). In the iPSP group, poststenting FFR was not associated with the risk of TVF at 5 years (per 0.01 increase of FFR, aHR: 1.00; 95% CI: 0.96-1.05; P = 0.95), whereas a significant association between poststenting FFR and TVF at 5 years was observed in the no iPSP group (per 0.01 increase of FFR, aHR: 0.94; 95% CI: 0.90-0.99; P = 0.009). CONCLUSIONS Poststenting FFR showed a significant association with cardiac events. However, its prognostic value appeared to be limited after the application of an imaging-guided optimal stenting strategy.
Collapse
Affiliation(s)
- Jung-Min Ahn
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Do-Yoon Kang
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ju Hyeon Kim
- Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Yeonwoo Choi
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hoyun Kim
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jinho Lee
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Duk-Woo Park
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seung-Jung Park
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| |
Collapse
|
3
|
Chen H, Hong L, Xi G, Wang H, Hu J, Liu Q, Yang L. Prognostic value of quantitative flow ratio in patients with coronary heart disease after percutaneous coronary intervention therapy: a meta-analysis. Front Cardiovasc Med 2023; 10:1164290. [PMID: 37608814 PMCID: PMC10441770 DOI: 10.3389/fcvm.2023.1164290] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 07/24/2023] [Indexed: 08/24/2023] Open
Abstract
Background Coronary atherosclerotic heart disease is one of the most serious health and life-threatening diseases. There is no doubt that despite the increasing number of assessment methods used clinically, the prognosis assessment is still not ideal, and newer assessment methods are needed. Objective To investigate the predictive value of quantitative flow ratio (QFR) for adverse events (vessel-oriented composite endpoint events/target lesion failure) in patients after percutaneous coronary intervention (PCI). Method Eight studies involving 4,173 patients (5,688 vascular lesions) were included. These are studies on the relationship between QFR values and prognosis of adverse cardiac events after PCI. This meta-analysis was performed after quality assessment and data extraction of clinical trials data that met the inclusion criteria. Result Each of the eight studies described the cut-off values for the best predictive ability of post-PCI QFR and the hazard ratio (HR) between QFR values and adverse events, respectively. The pooled HR of these studies was 4.72 (95% CI: 3.29-6.75). Concurrently, lower post-PCI QFR values were associated with the occurrence of individual clinical events (cardiac death/myocardial infarction/target vessel revascularization), with relative risk values of 6.51 (95% CI: 4.96-8.53), 4.83 (95% CI: 3.08-7.57), and 4.21 (95% CI: 2.66-6.68), respectively. Conclusion QFR may have great potential in the assessment of prognosis. It is necessary to measure QFR value after PCI. A lower QFR value after PCI was an important predictor for experiencing adverse events.
Collapse
Affiliation(s)
- Huaigang Chen
- Medical College of Nanchang University, Nanchang, China
- Department of Cardiology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Lang Hong
- Department of Cardiology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Gang Xi
- Department of Cardiology, The Third People's Hospital of Jingdezhen, Jingdezhen, China
| | - Hong Wang
- Department of Cardiology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Jing Hu
- Department of Cardiology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Qi Liu
- Medical College of Nanchang University, Nanchang, China
- Department of Cardiology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Liu Yang
- Department of Cardiology, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| |
Collapse
|
4
|
Collison D. "One of These Things Is Not Like the Other": FFR or IVUS to Guide Post-PCI Optimization? JACC Cardiovasc Interv 2023:S1936-8798(23)00854-3. [PMID: 37354159 DOI: 10.1016/j.jcin.2023.05.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 06/26/2023]
Affiliation(s)
- Damien Collison
- West of Scotland Regional Heart and Lung Centre, Golden Jubilee National Hospital, Glasgow, United Kingdom.
| |
Collapse
|
5
|
Neleman T, Scoccia A, Groenland FTW, Ziedses des Plantes AC, van Zandvoort LJC, Ligthart JMR, Witberg KT, Lenzen MJ, Boersma E, Nuis RJ, den Dekker WK, Diletti R, Wilschut J, Zijlstra F, Van Mieghem NM, Daemen J. Validation of Segmental Post-PCI Physiological Gradients With IVUS-Detected Focal Lesions and Stent Underexpansion. JACC Cardiovasc Interv 2023:S1936-8798(23)00676-3. [PMID: 37354158 DOI: 10.1016/j.jcin.2023.03.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/24/2023] [Accepted: 03/28/2023] [Indexed: 06/26/2023]
Abstract
BACKGROUND Segmental post-percutaneous coronary intervention (PCI) pressure gradients may detect residual disease and potential targets for optimization. However, universal definitions of relevant segmental gradients are lacking. OBJECTIVES The study sought to evaluate the diagnostic performance of post-PCI fractional flow reserve (FFR), distal coronary pressure-to-aortic pressure ratio (Pd/Pa), and diastolic pressure ratio (dPR) gradients to detect residual focal lesions and stent underexpansion as observed by intravascular ultrasound (IVUS). METHODS Patients from the IVUS-guided optimization arm of the FFR REACT (FFR-guided PCI Optimization Directed by High-Definition IVUS Versus Standard of Care) trial with complete IVUS and FFR pullback data were included. Patients with angiographically successful PCI and post-PCI FFR <0.90 underwent FFR, Pd/Pa, and IVUS pullbacks. dPR was calculated offline using dedicated software. Segmental pressure gradients (distal, in stent, and proximal) in segments ≥5 mm were evaluated against IVUS-detected residual disease (distal or proximal focal lesions and stent underexpansion). RESULTS A total of 139 vessels were included (mean post-PCI FFR: 0.83 ± 0.05, range 0.56-0.89). Focal distal and proximal lesions were detected by IVUS in 23 (17.4%) of 132 and 14 (12.6%) of 111 vessels, respectively, whereas stent underexpansion was present in 86 (61.9%) vessels. Diagnostic ability of segmental FFR gradients to predict IVUS-detected distal and proximal lesions was moderate to good (area under the curve [AUC]: 0.69 and 0.84, respectively) and poor to moderate for segmental Pd/Pa and dPR gradients (AUC ranging from 0.58 to 0.69). In-stent gradients had no discriminative ability to detect stent underexpansion (FFR AUC: 0.52; Pd/Pa AUC: 0.54; dPR AUC: 0.55). CONCLUSIONS In patients with post-PCI FFR <0.90, segmental post-PCI pressure gradients have moderate discriminative ability to identify IVUS-detected focal lesions but no discriminative ability to identify IVUS-detected stent underexpansion.
Collapse
Affiliation(s)
- Tara Neleman
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Alessandra Scoccia
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | | | | | | | - Jurgen M R Ligthart
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Karen T Witberg
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Mattie J Lenzen
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Eric Boersma
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Rutger-Jan Nuis
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Wijnand K den Dekker
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Roberto Diletti
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Jeroen Wilschut
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Felix Zijlstra
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Nicolas M Van Mieghem
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Joost Daemen
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, the Netherlands.
| |
Collapse
|
6
|
Ding D, Yu W, Tauzin H, De Maria G, Wu P, Yang F, Kotronias R, Terentes-Printzios D, Wolfrum M, Banning A, Meneveau N, Wijns W, Tu S. Optical flow ratio for assessing stenting result and physiological significance of residual disease. EUROINTERVENTION 2021; 17:e989-e998. [PMID: 34105514 PMCID: PMC9725050 DOI: 10.4244/eij-d-21-00185] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Optical flow ratio (OFR) is a novel method for fast computation of fractional flow reserve (FFR) from optical coherence tomography (OCT) images. AIMS We aimed to evaluate the accuracy of OFR in predicting post-percutaneous coronary intervention (PCI) FFR and the impact of stent expansion on within-stent OFR pressure drop (in-stent OFR). METHODS Post-PCI OFR was computed in patients with both OCT and FFR interrogation immediately after PCI. Calculation of post-PCI OFR (called simulated residual OFR) from pre-PCI OCT pullbacks after elimination of the stenotic segment by virtual stenting was performed in a subgroup of patients who had pre-PCI OCT images. Stent underexpansion was quantified by the minimum expansion index (MEI) of the stented segment. RESULTS A total of 125 paired comparisons between post-PCI OFR and FFR were obtained in 119 patients, among which simulated residual OFR was obtained in 64 vessels. Mean post-PCI FFR was 0.92±0.05. Post-PCI OFR showed good correlation (r=0.74, p<0.001) and agreement (mean difference=-0.01±0.03, p=0.051) with FFR. The accuracy in predicting post-PCI FFR ≤0.90 was 84% for post-PCI OFR. Simulated residual OFR significantly correlated with post-PCI FFR (r=0.42, p<0.001). MEI showed a moderate correlation (r=-0.49, p<0.001) with in-stent OFR. CONCLUSIONS Post-PCI OFR showed good diagnostic concordance with post-PCI FFR. Simulated residual OFR significantly correlated with post-PCI FFR. Stent underexpansion significantly correlated with in-stent pressure drop.
Collapse
Affiliation(s)
- Daixin Ding
- Biomedical Instrument Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China,The Lambe Institute for Translational Medicine and CÚRAM, National University of Ireland Galway, Galway, Ireland
| | - Wei Yu
- Biomedical Instrument Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Hélène Tauzin
- Department of Cardiology, University Hospital Jean Minjoz, Besançon, France
| | - Giovanni De Maria
- Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Peng Wu
- Biomedical Instrument Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Fan Yang
- Biomedical Instrument Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Rafail Kotronias
- Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Dimitrios Terentes-Printzios
- Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Mathias Wolfrum
- Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Adrian Banning
- Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Nicolas Meneveau
- Department of Cardiology, University Hospital Jean Minjoz, Besançon, France
| | - William Wijns
- The Lambe Institute for Translational Medicine and CÚRAM, National University of Ireland Galway, Galway, Ireland
| | - Shengxian Tu
- Shanghai Jiao Tong University, Room 123, Med-X Research Institute, No. 1954 Hua Shan Road, Xuhui District, Shanghai 200030, China. E-mail:
| |
Collapse
|
7
|
Improving PCI Outcomes Using Postprocedural Physiology and Intravascular Imaging. JACC Cardiovasc Interv 2021; 14:2415-2430. [PMID: 34794649 DOI: 10.1016/j.jcin.2021.08.069] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 07/07/2021] [Accepted: 08/03/2021] [Indexed: 11/24/2022]
Abstract
Although clinical outcomes after percutaneous coronary intervention (PCI) are improving, the long-term risk for target vessel failure remains concerning. Although the application of intravascular imaging and physiological indexes significantly improves outcomes, their routine use in practice remains limited. Nevertheless, merely using these modalities is not enough, and to truly improve patient outcomes, optimal intravascular dimensions with minimal vascular injury should be targeted. When assessing post-PCI results using either type of physiological or imaging technology, a broad spectrum of stent- and vessel-related anomalies can be expected. As not all of these issues warrant treatment, a profound knowledge of what to expect and how to recognize and when to treat these intraluminal problems is needed. Additionally, promising new modalities such as angiography-derived coronary physiology and hybrid imaging catheters are becoming available. The authors provide an overview of the currently available tools and techniques to define suboptimal PCI and when to apply these technologies to improve outcomes.
Collapse
|
8
|
Zhang J, Hwang D, Yang S, Kim CH, Lee JM, Nam CW, Shin ES, Doh JH, Hoshino M, Hamaya R, Kanaji Y, Murai T, Zhang JJ, Ye F, Li X, Ge Z, Chen SL, Kakuta T, Koo BK. Differential Prognostic Implications of Pre- and Post-Stent Fractional Flow Reserve in Patients Undergoing Percutaneous Coronary Intervention. Korean Circ J 2021; 52:47-59. [PMID: 34877828 PMCID: PMC8738713 DOI: 10.4070/kcj.2021.0128] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 08/10/2021] [Accepted: 09/01/2021] [Indexed: 01/10/2023] Open
Abstract
The current study showed that pre-percutaneous coronary intervention (PCI) fractional flow reserve (FFR) was associated with target vessel failure (TVF) after PCI. When the prognostic value of post-PCI FFR was evaluated according to pre-PCI FFR value, the risk of TVF significantly decreased along with the increase of post-PCI FFR in the low pre-PCI FFR group, but not in the high pre-PCI FFR group. Our study results suggest that patient prognosis can be varied according to the level of physiologic indices, both before and after PCI, and the integration of both information can provide better risk stratification after PCI. Background and Objectives The influence of pre-intervention coronary physiologic status on outcomes post percutaneous coronary intervention (PCI) is not well known. We sought to investigate the prognostic implications of pre-PCI fractional flow reserve (FFR) combined with post-PCI FFR. Methods A total of 1,479 PCI patients with pre-and post-PCI FFR data were analyzed. The patients were classified according to the median values of pre-PCI FFR (0.71) and post-PCI FFR (0.88). The primary outcome was target vessel failure (TVF) at 2 years. Results The risk of TVF was higher in the low pre-PCI FFR group than in the high pre-PCI FFR group (hazard ratio, 1.82; 95% confidence interval, 1.15–2.87; p=0.011). In 4 group comparisons, the cumulative incidences of TVF at 2 years were 3.8%, 4.1%, 4.8%, and 10.2% in the high pre-/high post-, low pre-/high post-, high pre-/low post-, and low pre-/low post-PCI FFR groups, respectively. The risk of TVF was the highest in the low pre-/low post-PCI FFR group among the groups (p values for comparisons <0.05). In addition, the high pre-/low post-PCI FFR group presented a comparable risk of TVF with the high post-PCI FFR groups (p values for comparison >0.05). When the prognostic value of the post-PCI FFR was evaluated according to the pre-PCI FFR, the risk of TVF significantly decreased with an increase in post-PCI FFR in the low pre-PCI FFR group, but not in the high pre-PCI FFR group. Conclusions Pre-PCI FFR was associated with clinical outcomes after PCI, and the prognostic value of post-PCI FFR differed according to the pre-PCI FFR. Trial Registration ClinicalTrials.gov Identifier: NCT04012281
Collapse
Affiliation(s)
- Jinlong Zhang
- Department of Cardiology, The Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
| | - Doyeon Hwang
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Seokhun Yang
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Chee Hae Kim
- Cardiovascular Center, Dongguk University Ilsan Hospital, Goyang, Korea
| | - Joo Myung Lee
- Division of Cardiology, Department of Internal Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chang-Wook Nam
- Department of Cardiology, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Eun-Seok Shin
- Division of Cardiology, Ulsan Hospital, Ulsan, Korea
| | - Joon-Hyung Doh
- Department of Cardiology, Inje University Ilsan Paik Hospital, Goyang, Korea.
| | - Masahiro Hoshino
- Division of Cardiovascular Medicine, Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Rikuta Hamaya
- Division of Cardiovascular Medicine, Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Yoshihisa Kanaji
- Division of Cardiovascular Medicine, Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Tadashi Murai
- Division of Cardiovascular Medicine, Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Jun-Jie Zhang
- Division of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Fei Ye
- Division of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xiaobo Li
- Division of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Zhen Ge
- Division of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Shao-Liang Chen
- Division of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Tsunekazu Kakuta
- Division of Cardiovascular Medicine, Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Bon-Kwon Koo
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea.
| |
Collapse
|
9
|
Ding D, Huang J, Westra J, Cohen DJ, Chen Y, Andersen BK, Holm NR, Xu B, Tu S, Wijns W. Immediate post-procedural functional assessment of percutaneous coronary intervention: current evidence and future directions. Eur Heart J 2021; 42:2695-2707. [PMID: 33822922 DOI: 10.1093/eurheartj/ehab186] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/17/2021] [Accepted: 03/11/2021] [Indexed: 01/10/2023] Open
Abstract
Percutaneous coronary intervention (PCI) guided by coronary physiology provides symptomatic benefit and improves patient outcomes. Nevertheless, over one-fourth of patients still experience recurrent angina or major adverse cardiac events following the index procedure. Coronary angiography, the current workhorse for evaluating PCI efficacy, has limited ability to identify suboptimal PCI results. Accumulating evidence supports the usefulness of immediate post-procedural functional assessment. This review discusses the incidence and possible mechanisms behind a suboptimal physiology immediately after PCI. Furthermore, we summarize the current evidence base supporting the usefulness of immediate post-PCI functional assessment for evaluating PCI effectiveness, guiding PCI optimization, and predicting clinical outcomes. Multiple observational studies and post hoc analyses of datasets from randomized trials demonstrated that higher post-PCI functional results are associated with better clinical outcomes as well as a reduced rate of residual angina and repeat revascularization. As such, post-PCI functional assessment is anticipated to impact patient management, secondary prevention, and resource utilization. Pre-PCI physiological guidance has been shown to improve clinical outcomes and reduce health care costs. Whether similar benefits can be achieved using post-PCI physiological assessment requires evaluation in randomized clinical outcome trials.
Collapse
Affiliation(s)
- Daixin Ding
- The Lambe Institute for Translational Medicine and Curam, National University of Ireland, University Road, Galway H91 TK3, Ireland.,Biomedical Instrument Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, No. 1954 Hua Shan Road, Xuhui District, Shanghai 200030, China
| | - Jiayue Huang
- The Lambe Institute for Translational Medicine and Curam, National University of Ireland, University Road, Galway H91 TK3, Ireland.,Biomedical Instrument Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, No. 1954 Hua Shan Road, Xuhui District, Shanghai 200030, China
| | - Jelmer Westra
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - David Joel Cohen
- St. Francis Hospital, Roslyn NY and Cardiovascular Research Foundation, 100 Port Washington Blvd (Middle Neck Road), New York, NY 11576, USA
| | - Yundai Chen
- Department of Cardiology, Chinese PLA General Hospital, No. 28 Fuxing Road, Haidian District, Beijing 100853, China
| | | | - Niels Ramsing Holm
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Bo Xu
- Catheterization Laboratories, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Cardiovascular Diseases, A 167, Beilishi Road, Xicheng District, Beijing 100037, China
| | - Shengxian Tu
- Biomedical Instrument Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, No. 1954 Hua Shan Road, Xuhui District, Shanghai 200030, China.,Department of Cardiology, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Gulou District, Fuzhou, Fujian 350001, China
| | - William Wijns
- The Lambe Institute for Translational Medicine and Curam, National University of Ireland, University Road, Galway H91 TK3, Ireland
| |
Collapse
|
10
|
Collison D, McClure JD, Berry C, Oldroyd KG. A randomized controlled trial of a physiology-guided percutaneous coronary intervention optimization strategy: Rationale and design of the TARGET FFR study. Clin Cardiol 2020; 43:414-422. [PMID: 32037592 PMCID: PMC7244297 DOI: 10.1002/clc.23342] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/23/2020] [Accepted: 01/27/2020] [Indexed: 01/09/2023] Open
Abstract
Post-percutaneous coronary intervention (PCI) fractional flow reserve (FFR) ≥0.90 confers an improved cardiac prognosis. There are currently limited data available to determine how often it is possible to improve an angiographically acceptable but physiologically suboptimal result. A physiology-guided optimization strategy can achieve a clinically meaningful increase in the proportion of patients achieving a final post-PCI FFR ≥0.90 compared to standard care. Following angiographically successful PCI procedures, 260 patients will be randomized (1:1) to receive either a physiology-guided incremental optimization strategy (intervention group) or blinded post-PCI coronary physiology measurements (control group). Patients undergoing successful, standard-of-care PCI for either stable angina or non-ST-segment-elevation myocardial infarction who meet the study's inclusion and exclusion criteria will be eligible for randomization. The primary endpoint is defined as the proportion of patients with a final post-PCI FFR result ≥0.90. Secondary endpoints include change from baseline in Seattle Angina Questionnaire and EQ-5D-5L scores at 3 months and the rate of target vessel failure and its components (cardiac death, myocardial infarction, stent thrombosis, unplanned rehospitalization with target vessel revascularization) at 3 months and 1 year. 260 individual patients were successfully randomized between March 2018 and November 2019. Key baseline demographics of the study population are reported within. TARGET FFR is an investigator-initiated, prospective, single-center, randomized controlled trial of an FFR-guided PCI optimization strategy. The study has completed recruitment and is now in clinical follow-up. It is anticipated that primary results will be presented in Autumn 2020. ClinicalTrials.gov Identifier: NCT03259815. [Correction added on Apr 3 2020, after first online publication: Clinical Trials identifier added.].
Collapse
Affiliation(s)
- Damien Collison
- West of Scotland Regional Heart and Lung CentreGolden Jubilee National HospitalClydebankUK
- Institute of Cardiovascular and Medical SciencesUniversity of GlasgowGlasgowUK
| | - John D. McClure
- Institute of Cardiovascular and Medical SciencesUniversity of GlasgowGlasgowUK
| | - Colin Berry
- West of Scotland Regional Heart and Lung CentreGolden Jubilee National HospitalClydebankUK
- Institute of Cardiovascular and Medical SciencesUniversity of GlasgowGlasgowUK
| | - Keith G. Oldroyd
- West of Scotland Regional Heart and Lung CentreGolden Jubilee National HospitalClydebankUK
- Institute of Cardiovascular and Medical SciencesUniversity of GlasgowGlasgowUK
| |
Collapse
|
11
|
Validation of post-stenting fractional flow reserve with intravascular ultrasound parameters for optimal stent deployment. Int J Cardiovasc Imaging 2019; 36:197-203. [DOI: 10.1007/s10554-019-01712-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 10/03/2019] [Indexed: 11/26/2022]
|
12
|
Fearon WF. Nonhyperemic Coronary Pressure Ratios to Assess Percutaneous Coronary Intervention. JACC Cardiovasc Interv 2019; 12:2015-2017. [PMID: 31648763 DOI: 10.1016/j.jcin.2019.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 08/13/2019] [Indexed: 11/15/2022]
Affiliation(s)
- William F Fearon
- Division of Cardiovascular Medicine and Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, California.
| |
Collapse
|
13
|
Yang H, Lim H, Yoon M, Seo K, Choi B, Choi S, Hwang G, Tahk S. Usefulness of the trans‐stent fractional flow reserve gradient for predicting clinical outcomes. Catheter Cardiovasc Interv 2019; 95:E123-E129. [DOI: 10.1002/ccd.28363] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 04/12/2019] [Accepted: 05/18/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Hyoung‐Mo Yang
- Department of CardiologyAjou University School of Medicine Suwon Republic of Korea
| | - Hong‐Seok Lim
- Department of CardiologyAjou University School of Medicine Suwon Republic of Korea
| | - Myeong‐Ho Yoon
- Department of CardiologyAjou University School of Medicine Suwon Republic of Korea
| | - Kyoung‐Woo Seo
- Department of CardiologyAjou University School of Medicine Suwon Republic of Korea
| | - Byoung‐Joo Choi
- Department of CardiologyAjou University School of Medicine Suwon Republic of Korea
| | - So‐Yeon Choi
- Department of CardiologyAjou University School of Medicine Suwon Republic of Korea
| | - Gyo‐Seung Hwang
- Department of CardiologyAjou University School of Medicine Suwon Republic of Korea
| | - Seung‐Jea Tahk
- Department of CardiologyAjou University School of Medicine Suwon Republic of Korea
| |
Collapse
|
14
|
Capodanno D. Angiographic or Functional Success?: Rethinking the Goal of Percutaneous Coronary Intervention. JACC Cardiovasc Interv 2018; 11:246-248. [PMID: 29361448 DOI: 10.1016/j.jcin.2017.10.004] [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] [Received: 09/28/2017] [Accepted: 10/03/2017] [Indexed: 11/20/2022]
Affiliation(s)
- Davide Capodanno
- Division of Cardiology, Cardio-Thoracic-Vascular Department, Azienda Ospedaliero Universitaria "Policlinico-Vittorio Emanuele," Catania, Italy; and the Department of General Surgery and Medical-Surgical Specialties, University of Catania, Catania, Italy.
| |
Collapse
|
15
|
In-stent fractional flow reserve variations and related optical coherence tomography findings: the FFR–OCT co-registration study. Int J Cardiovasc Imaging 2017; 34:495-502. [DOI: 10.1007/s10554-017-1262-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/19/2017] [Indexed: 10/18/2022]
|
16
|
Cutoff Value and Long-Term Prediction of Clinical Events by FFR Measured Immediately After Implantation of a Drug-Eluting Stent in Patients With Coronary Artery Disease. JACC Cardiovasc Interv 2017; 10:986-995. [DOI: 10.1016/j.jcin.2017.02.012] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 02/14/2017] [Accepted: 02/14/2017] [Indexed: 11/18/2022]
|
17
|
Tanaka N, Pijls NH, Yamashita J, Kimura Y, Ogawa M, Murata N, Sakoda K, Hoshino K, Hokama Y, Yamashina A. Analysis of suboptimal stent deployment using intravascular ultrasound and coronary pressure pullback measurement. J Cardiol 2017; 69:613-618. [DOI: 10.1016/j.jjcc.2016.09.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 09/05/2016] [Accepted: 09/12/2016] [Indexed: 10/20/2022]
|
18
|
Rimac G, Fearon WF, De Bruyne B, Ikeno F, Matsuo H, Piroth Z, Costerousse O, Bertrand OF. Clinical value of post-percutaneous coronary intervention fractional flow reserve value: A systematic review and meta-analysis. Am Heart J 2017; 183:1-9. [PMID: 27979031 DOI: 10.1016/j.ahj.2016.10.005] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 10/03/2016] [Indexed: 01/23/2023]
Abstract
BACKGROUND Fractional flow reserve (FFR) prior to percutaneous coronary intervention (PCI) is useful to guide treatment. Whether post-PCI FFR assessment might have clinical impact is controversial. The aim of this study is to evaluate the range of post-PCI FFR values and analyze the relationship between post-PCI FFR and clinical outcomes. METHODS We systematically searched the PubMed, EMBASE, and Cochrane Library databases with cross-referencing of articles reporting post-PCI FFR and correlating post-PCI FFR values and clinical outcomes. The outcomes of interest were the immediate post-PCI FFR values and the correlations between post-PCI FFR and the incidence of repeat intervention and major adverse cardiac events (MACE). RESULTS From 1995 to 2015, a total of 105 studies (n = 7470) were included, with 46 studies reporting post-PCI FFR and 59 studies evaluating relationship between post-PCI and clinical outcomes up to 30 months after PCI. Overall, post-PCI FFR values demonstrated a normal distribution with a mean value of 0.90 ± 0.04. There was a positive correlation between the percentage of stent use and post-PCI FFR (P < .0001). Meta-regression analysis indicated that higher post-PCI FFR values were associated with reduced rates of repeat intervention (P < .0001) and MACE (P = .0013). A post-PCI FFR ≥0.90 was associated with significantly lower risk of repeat PCI (odds ratio 0.43, 95% CI 0.34-0.56, P < .0001) and MACE (odds ratio 0.71, 95% CI 0.59-0.85, P = .0003). CONCLUSIONS FFR measurement after PCI was associated with prognostic significance. Further investigation is required to assess the role of post-PCI FFR and validate cutoff values in contemporary clinical practice.
Collapse
|
19
|
Wolfrum M, Fahrni G, de Maria GL, Knapp G, Curzen N, Kharbanda RK, Fröhlich GM, Banning AP. Impact of impaired fractional flow reserve after coronary interventions on outcomes: a systematic review and meta-analysis. BMC Cardiovasc Disord 2016; 16:177. [PMID: 27608682 PMCID: PMC5017064 DOI: 10.1186/s12872-016-0355-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 08/26/2016] [Indexed: 12/26/2022] Open
Abstract
Background FFR is routinely used to guide percutaneous coronary interventions (PCI). Visual assessment of the angiographic result after PCI has limited efficacy. Even when the angiographic result seems satisfactory FFR after a PCI might be useful for identifying patients with a suboptimal interventional result and higher risk for poor clinical outcome who might benefit from additional procedures. The aim of this meta-analysis was to investigate available data of studies that examined clinical outcomes of patients with impaired vs. satisfactory fractional flow reserve (FFR) after percutaneous coronary interventions (PCI). Methods This meta-analysis was carried out according to the Cochrane Handbook for Systematic Reviews. The Mantel-Haenszel method using the fixed-effect meta-analysis model was used for combining the results. Studies were identified by searching the literature through mid-January, 2016, using the following search terms: fractional flow reserve, coronary circulation, after, percutaneous coronary intervention, balloon angioplasty, stent implantation, and stenting. Primary endpoint was the rate of major adverse cardiac events (MACE). Secondary endpoints included rates of death, myocardial infarction (MI), repeated revascularisation. Results Eight relevant studies were found including a total of 1337 patients. Of those, 492 (36.8 %) had an impaired FFR after PCI, and 853 (63.2 %) had a satisfactory FFR after PCI. Odds ratios indicated that a low FFR following PCI was associated with an impaired outcome: major adverse cardiac events (MACE, OR: 4.95, 95 % confidence interval [CI]: 3.39–7.22, p <0.001); death (OR: 3.23, 95 % CI: 1.19–8.76, p = 0.022); myocardial infarction (OR: 13.83, 95 % CI: 4.75–40.24, p <0.0001) and repeated revascularisation (OR: 4.42, 95 % CI: 2.73–7.15, p <0.0001). Conclusions Compared to a satisfactory FFR, a persistently low FFR following PCI is associated with a worse clinical outcome. Prospective studies are needed to identify underlying causes, determine an optimal threshold for post-PCI FFR, and clarify whether simple additional procedures can influence the post-PCI FFR and clinical outcome. Electronic supplementary material The online version of this article (doi:10.1186/s12872-016-0355-7) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Mathias Wolfrum
- Oxford Heart Centre, Oxford University Hospitals, Headley Way, Oxford, OX39DU, UK
| | - Gregor Fahrni
- Oxford Heart Centre, Oxford University Hospitals, Headley Way, Oxford, OX39DU, UK
| | | | - Guido Knapp
- Department of Statistics, TU University Dortmund, Dortmund, Germany
| | - Nick Curzen
- University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Rajesh K Kharbanda
- Oxford Heart Centre, Oxford University Hospitals, Headley Way, Oxford, OX39DU, UK
| | - Georg M Fröhlich
- Department of Cardiology, Charité Universitätsmedizin Berlin (Campus Benjamin Franklin), Berlin, Germany
| | - Adrian P Banning
- Oxford Heart Centre, Oxford University Hospitals, Headley Way, Oxford, OX39DU, UK.
| |
Collapse
|
20
|
Utilizing Post-Intervention Fractional Flow Reserve to Optimize Acute Results and the Relationship to Long-Term Outcomes. JACC Cardiovasc Interv 2016; 9:1022-31. [DOI: 10.1016/j.jcin.2016.01.046] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 01/28/2016] [Indexed: 01/11/2023]
|
21
|
Niccoli G, Scalone G, Crea F. Coronary Functional Tests in the Catheterization Laboratory – Pathophysiological and Clinical Relevance –. Circ J 2015; 79:676-84. [DOI: 10.1253/circj.cj-15-0201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | | | - Filippo Crea
- Institute of Cardiology, Catholic University of the Sacred Heart
| |
Collapse
|
22
|
Ito T, Tani T, Fujita H, Ohte N. Relationship between fractional flow reserve and residual plaque volume and clinical outcomes after optimal drug-eluting stent implantation: Insight from intravascular ultrasound volumetric analysis. Int J Cardiol 2014; 176:399-404. [DOI: 10.1016/j.ijcard.2014.07.115] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Revised: 07/06/2014] [Accepted: 07/26/2014] [Indexed: 11/30/2022]
|
23
|
Does optical coherence tomography optimize results of stenting? Rationale and study design. Am Heart J 2014; 168:175-81.e1-2. [PMID: 25066556 DOI: 10.1016/j.ahj.2014.05.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 05/14/2014] [Indexed: 11/21/2022]
Abstract
BACKGROUND To date, no randomized study has investigated the value of optical coherence tomography (OCT) in optimizing the results of coronary angioplasty for non-ST-segment elevation acute coronary syndromes. METHODS DOCTORS is a randomized, prospective, multicenter, open-label clinical trial to evaluate the utility of OCT to optimize results of angioplasty of a lesion responsible for non-ST-elevation acute coronary syndromes. Patients (n = 250) will be randomized to undergo OCT-guided angioplasty (use of OCT to optimize procedural result, including change to strategy with the possibility of additional interventions) or angioplasty under fluoroscopy alone. The primary end point is the functional result of the angioplasty procedure as assessed by fractional flow reserve (FFR) measured at the end of the procedure. Secondary end points include safety of OCT in the context of angioplasty for ACS, percentage of patients in whom OCT reveals suboptimal result of stenting, percentage of patients in whom a change in procedural strategy is decided based on OCT data, correlation between quantitative measures by OCT and FFR, determination of a threshold for quantitative OCT measure that best predicts FFR ≥ 0.90, and identification of OCT variables that predict postprocedure FFR. Adverse cardiac events (death, recurrent myocardial infarction, stent thrombosis, and repeat target lesion revascularization) at 6 months will be recorded. CONCLUSION The DOCTORS randomized trial (ClinicalTrials.gov NCT01743274) is designed to investigate whether use of OCT yields useful additional information beyond that obtained by angiography alone and, if so, whether this information changes physician strategy and impacts on the functional result of angioplasty as assessed by FFR.
Collapse
|
24
|
Affiliation(s)
- William F Fearon
- Division of Cardiovascular Medicine, Stanford University Medical Center, Stanford, CA
| |
Collapse
|
25
|
Murai T, Lee T, Yonetsu T, Isobe M, Kakuta T. Influence of microvascular resistance on fractional flow reserve after successful percutaneous coronary intervention. Catheter Cardiovasc Interv 2014; 85:585-92. [DOI: 10.1002/ccd.25499] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 03/12/2014] [Accepted: 03/23/2014] [Indexed: 11/12/2022]
Affiliation(s)
- Tadashi Murai
- Department of Cardiology; Tsuchiura Kyodo General Hospital; Tsuchiura Japan
| | - Tetsumin Lee
- Department of Cardiology; Tsuchiura Kyodo General Hospital; Tsuchiura Japan
| | - Taishi Yonetsu
- Department of Cardiology; Kameda Medical Center; Kamogawa Japan
| | - Mitsuaki Isobe
- Department of Cardiovascular Medicine; Tokyo Medical and Dental University; Tokyo Japan
| | - Tsunekazu Kakuta
- Department of Cardiology; Tsuchiura Kyodo General Hospital; Tsuchiura Japan
| |
Collapse
|
26
|
Nijjer SS, Sen S, Petraco R, Sachdeva R, Cuculi F, Escaned J, Broyd C, Foin N, Hadjiloizou N, Foale RA, Malik I, Mikhail GW, Sethi AS, Al-Bustami M, Kaprielian RR, Khan MA, Baker CS, Bellamy MF, Hughes AD, Mayet J, Kharbanda RK, Di Mario C, Davies JE. Improvement in coronary haemodynamics after percutaneous coronary intervention: assessment using instantaneous wave-free ratio. Heart 2013; 99:1740-8. [PMID: 24047640 PMCID: PMC3841762 DOI: 10.1136/heartjnl-2013-304387] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Objective To determine whether the instantaneous wave-free ratio (iFR) can detect improvement in stenosis significance after percutaneous coronary intervention (PCI) and compare this with fractional flow reserve (FFR) and whole cycle Pd/Pa. Design A prospective observational study was undertaken in elective patients scheduled for PCI with FFR ≤0.80. Intracoronary pressures were measured at rest and during adenosine-mediated vasodilatation, before and after PCI. iFR, Pd/Pa and FFR values were calculated using the validated fully automated algorithms. Setting Coronary catheter laboratories in two UK centres and one in the USA. Patients 120 coronary stenoses in 112 patients were assessed. The mean age was 63±10 years, while 84% were male; 39% smokers; 33% with diabetes. Mean diameter stenosis was 68±16% by quantitative coronary angiography. Results Pre-PCI, mean FFR was 0.66±0.14, mean iFR was 0.75±0.21 and mean Pd/Pa 0.83±0.16. PCI increased all indices significantly (FFR 0.89±0.07, p<0.001; iFR 0.94±0.05, p<0.001; Pd/Pa 0.96±0.04, p<0.001). The change in iFR after intervention (0.20±0.21) was similar to ΔFFR 0.22±0.15 (p=0.25). ΔFFR and ΔiFR were significantly larger than resting ΔPd/Pa (0.13±0.16, both p<0.001). Similar incremental changes occurred in patients with a higher prevalence of risk factors for microcirculatory disease such as diabetes and hypertension. Conclusions iFR and FFR detect the changes in coronary haemodynamics elicited by PCI. FFR and iFR have a significantly larger dynamic range than resting Pd/Pa. iFR might be used to objectively document improvement in coronary haemodynamics following PCI in a similar manner to FFR.
Collapse
|
27
|
Kim HL, Koo BK, Nam CW, Doh JH, Kim JH, Yang HM, Park KW, Lee HY, Kang HJ, Cho YS, Youn TJ, Kim SH, Chae IH, Choi DJ, Kim HS, Oh BH, Park YB. Clinical and physiological outcomes of fractional flow reserve-guided percutaneous coronary intervention in patients with serial stenoses within one coronary artery. JACC Cardiovasc Interv 2013; 5:1013-8. [PMID: 23078728 DOI: 10.1016/j.jcin.2012.06.017] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 06/14/2012] [Accepted: 06/21/2012] [Indexed: 12/17/2022]
Abstract
OBJECTIVES This study was performed to evaluate the physiological and clinical outcomes of fractional flow reserve (FFR)-guided revascularization strategy with drug-eluting stents in serial stenoses within the same coronary artery. BACKGROUND Identifying a functionally significant stenosis is difficult when several stenoses exist within 1 coronary artery. METHODS A total of 131 patients (141 vessels and 298 lesions) with multiple intermediate stenoses within the same coronary artery were assessed by FFR with pullback pressure tracings. In vessels with an FFR <0.8, the stenosis that caused the largest pressure step-up was stented first. Major adverse cardiac events were assessed during follow-up. RESULTS FFR was measured 239 times and there were no procedure-related complications. There was a weak negative correlation between FFR and angiographic percent diameter stenosis (r = -0.282, p < 0.001). In total, 116 stents were implanted and revascularization was deferred in 61.1% (182 of 298) of lesions. When the vessels with an initial FFR <0.8 were divided into 2 groups according to FFR after first stenting (FFR ≥0.8 vs. FFR <0.8), there were no differences in baseline angiographic and physiological parameters between the 2 groups. During the mean follow-up of 501 ± 311 days, there was only 1 target vessel revascularization due to in-stent restenosis. There were no events related to deferred lesions. CONCLUSIONS FFR-guided revascularization strategy using pullback pressure tracing in serial stenoses was safe and effective. This strategy can reduce unnecessary intervention and maximize the benefit of percutaneous coronary intervention with drug-eluting stents in patients with multiple stenoses within 1 coronary artery.
Collapse
Affiliation(s)
- Hack-Lyoung Kim
- Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Clinical implications of coronary pressure measurement after stent implantation. Cardiovasc Interv Ther 2012; 28:170-7. [DOI: 10.1007/s12928-012-0147-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Accepted: 11/06/2012] [Indexed: 11/25/2022]
|
29
|
Leesar MA, Satran A, Yalamanchili V, Helmy T, Abdul-Waheed M, Wongpraparut N. The impact of fractional flow reserve measurement on clinical outcomes after transradial coronary stenting. EUROINTERVENTION 2011; 7:917-23. [DOI: 10.4244/eijv7i8a145] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
30
|
Godinho Teixeira T, Silva J, Mota P, Leitão-Marques A. Importância de diferentes técnicas na avaliação da significância de estenoses coronárias. Rev Port Cardiol 2011; 30:679-82. [DOI: 10.1016/s0870-2551(11)70007-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Accepted: 02/18/2011] [Indexed: 11/29/2022] Open
|
31
|
Importance of different techniques in assessing the significance of coronary stenosis. REVISTA PORTUGUESA DE CARDIOLOGIA (ENGLISH EDITION) 2011. [DOI: 10.1016/s2174-2049(11)70007-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
32
|
Nam CW, Hur SH, Cho YK, Park HS, Yoon HJ, Kim H, Chung IS, Kim YN, Kim KB, Doh JH, Koo BK, Tahk SJ, Fearon WF. Relation of fractional flow reserve after drug-eluting stent implantation to one-year outcomes. Am J Cardiol 2011; 107:1763-7. [PMID: 21481828 DOI: 10.1016/j.amjcard.2011.02.329] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 02/12/2011] [Accepted: 02/12/2011] [Indexed: 10/18/2022]
Abstract
Patients still present with drug-eluting stent (DES) failure despite an angiographically successful implantation. The aim of the present study was to investigate the relation between the fractional flow reserve (FFR) measured after DES implantation and the clinical outcomes at 1 year. A total of 80 patients (mean age 62 years, 74% men, 99 DESs) underwent coronary pressure measurement at maximum hyperemia after successful DES implantation. The composite of major adverse cardiac events (MACE), including death, myocardial infarction, and ischemia-driven target vessel revascularization was evaluated at 1 year. The patients were divided into 2 groups (low-FFR group, FFR ≤0.90 and high-FFR group, FFR >0.90) according to the median FFR. The mean poststent percent diameter stenosis was 11 ± 5% in the low-FFR group and 12 ± 3% in the high-FFR group (p = 0.31). Left anterior descending coronary artery lesions were more frequent in the low-FFR group than in the high-FFR group (82% vs 55%, p = 0.02). The mean stent length was greater in the low-FFR group than in the high-FFR group (38 ± 18 vs 28 ± 13 mm, p = 0.01). Six cases (7.5%) of MACE occurred during the 1-year follow-up. The rate of MACE was 12.5% in the low-FFR group and 2.5% in the high-FFR group (p <0.01). Receiver operating characteristic curves revealed 0.90 as the best cutoff of FFR after DES implantation for the prediction of 1-year MACE. In conclusion, a poststent FFR of ≤0.90 correlated with a greater adverse event rate at 1 year.
Collapse
|
33
|
Thomas DE, Yousef ZR, Kinnaird TD, Anderson RA. The value of using fractional flow reserve measurements in helping to diagnose acute left ventricular failure in the presence of normal left ventricular systolic function. CARDIOVASCULAR REVASCULARIZATION MEDICINE 2011; 12:181-183. [PMID: 21640937 DOI: 10.1016/j.carrev.2010.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2009] [Revised: 01/13/2010] [Accepted: 01/26/2010] [Indexed: 10/18/2022]
|
34
|
Ishii H, Kataoka T, Kobayashi Y, Tsumori T, Takeshita H, Matsumoto R, Shirai N, Nishioka H, Hasegawa T, Nakata S, Shimada Y, Ehara S, Muro T, Yoshiyama M. Utility of myocardial fractional flow reserve for prediction of restenosis following sirolimus-eluting stent implantation. Heart Vessels 2011; 26:572-81. [PMID: 21221600 DOI: 10.1007/s00380-010-0105-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2010] [Accepted: 11/12/2010] [Indexed: 10/18/2022]
Abstract
Drug-eluting stents reduce restenosis due to neointimal growth suppression. Considering long-term outcomes, it is both difficult and important to predict drug-eluting stent restenosis. Thus, this study was designed to examine the utility of myocardial fractional flow reserve (FFR) as a predictor of sirolimus-eluting stent (SES) restenosis. Thirty-three patients (35 lesions) were enrolled. Upon completion of SES implantation, FFR was obtained under hyperemia. At 8 months of follow-up, coronary angiography revealed that five lesions had restenosis. Percent diameter stenosis (restenosis 68.7 ± 12.8% vs. non-restenosis 68.7 ± 12.4%, p = 0.78) and lesion length (restenosis 15.8 ± 9.4 mm vs. non-restenosis 14.4 ± 9.2 mm, p = 0.60) were similar. At post-intervention, percent diameter stenosis (restenosis 16.4 ± 6.1% vs. non-restenosis 14.0 ± 7.4%, p = 0.48) and minimum stent area (restenosis 6.01 ± 1.08 mm2 vs. non-restenosis 6.27 ± 1.85 mm2, p = 0.92) were also equivalent. However, proximal edge lumen area was smaller (restenosis 4.24 ± 1.40 mm2 vs. non-restenosis 7.73 ± 2.64 mm2, p = 0.004) and FFR was lower in the restenosis group (restenosis 0.81 ± 0.12 vs. non-restenosis 0.92 ± 0.06, p = 0.029). SES patients with restenosis had a lower FFR post stent deployment, suggesting the decreased FFR may be a useful predictor for SES restenosis.
Collapse
Affiliation(s)
- Hideshi Ishii
- Department of Cardiology, Higashisumiyoshi Morimoto Hospital, Osaka, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Iwasaki K, Kusachi S. Coronary pressure measurement based decision making for percutaneous coronary intervention. Curr Cardiol Rev 2009; 5:323-33. [PMID: 21037849 PMCID: PMC2842964 DOI: 10.2174/157340309789317832] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2008] [Revised: 02/12/2009] [Accepted: 02/19/2009] [Indexed: 01/17/2023] Open
Abstract
The fractional flow reserve (FFR) is a simple, reliable, and reproducible physiologic index of lesion severity. In patients with intermediate stenosis, FFR≥0.75 can be used to safely defer percutaneous coronary intervention (PCI), and patients with FFR≥0.75 have a very low cardiac event rate. Coronary pressure measurement can determine which lesion should be treated with PCI in patients with tandem lesions, and PCI on the basis of FFR has been demonstrated to result in an acceptably low repeat PCI rate. FFR can identify patients with equivocal left main coronary artery disease who benefit from coronary bypass surgery. Coronary pressure measurement distinguishes patients with an abrupt pressure drop pattern from those with a gradual pressure drop pattern, and the former group of patients benefit from PCI. Coronary pressure measurement is clinically useful in evaluating sufficient recruitable coronary collateral blood flow for prevention of ischemia, which affects future cardiac events. FFR is useful for the prediction of restenosis after PCI. As an end-point of PCI, FFR ≥0.95 and ≥0.90 would be appropriate for coronary stenting and coronary angioplasty, respectively. In summary, if you encounter a coronary stenosis in doubt you should measure pressure rather than dilate it.
Collapse
Affiliation(s)
| | - Shozo Kusachi
- Department of Medical Technology, Okayama University Graduate School of Health Sciences, Japan
| |
Collapse
|
36
|
Abstract
Coronary stent under expansion is a major contributor to in-stent restenosis and acute stent thrombosis. StentBoost and IC Stent are advanced x-ray image enhancing techniques that provide improved stent visualization by eliminating motion artifact. These techniques can be useful in the detection of inadequate stent expansion. These motion-corrected x-ray stent (MXS) visualization techniques are more time-efficient compared to intravascular ultrasound (IVUS), require less training of catheterization laboratory personnel, and have lower procedural costs. However, little clinical or outcome data evidence exist for MXS. Though IVUS remains the gold standard for evaluation of the adequacy of stent expansion, MXS may be a viable adjunctive imaging tool in certain clinical scenarios.
Collapse
|
37
|
Stempfle HU, König A, Drescher E, Siebert U, Klauss V. Discrepancy between morphologic and functional criteria of optimal stent deployment using intravascular ultrasound and pressure derived myocardial fractional flow reserve. ACTA ACUST UNITED AC 2009; 7:101-7. [PMID: 16093220 DOI: 10.1080/14628840510039540] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Pressure derived myocardial FFR, a functional index of epicardial stenosis has been proposed for the assessment of optimal stent deployment. The following study evaluated the potential of serial fractional flow reserve (FFR) measurements in comparison to the 'gold standard' intravascular ultrasound (IVUS) for optimal stent deployment and its long-term outcome. METHODS 35 patients with a single de novo lesion underwent PTCA followed by stent implantation with an initial inflation pressure of 12 atm. If optimal stent expansion using IVUS-criteria were not fulfilled, re-dilatation at 16 atm as well as additional inflations with larger balloon sizes were performed to reach the procedural end-point. IVUS and FFR were performed after each dilatation (n = 136). Angiography was repeated after 6 months. RESULTS In 30 pts who fulfilled IVUS criteria, mean lumen area (2.9+/-1.3 mm2) increased after PTCA and stent implantation to 10.0+/-3.0 mm2. In six pts, optimum stent deployment according to a value of FFR0.94 was not reached. Four of six pts reached the IVUS criteria at 12 atm and two pts at 16 atm, respectively. Positive and negative predictive values of FFR were 26 and 64%. Three of the 30 pts (10%) revealed a restenosis at three months follow-up. One of these restenosis was seen in a patient with a post-procedural FFR<0.94. CONCLUSIONS FFR was not valid to predict optimal stent expansion according to IVUS criteria but could delineate under-expanded stents despite a reasonable angiographic appearance. Morphologic (IVUS) and functional criteria (FFR) for optimal stent deployment revealed a comparably low restenosis rate.
Collapse
Affiliation(s)
- Hans-Ulrich Stempfle
- Medizinische Poliklinik-Innenstadt, Department of Cardiology, University of Munich, Germany
| | | | | | | | | |
Collapse
|
38
|
Prediction of Hypertension Improvement After Stenting of Renal Artery Stenosis. J Am Coll Cardiol 2009; 53:2363-71. [DOI: 10.1016/j.jacc.2009.03.031] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Revised: 02/17/2009] [Accepted: 03/03/2009] [Indexed: 11/16/2022]
|
39
|
Samady H, McDaniel M, Veledar E, De Bruyne B, Pijls NH, Fearon WF, Vaccarino V. Baseline Fractional Flow Reserve and Stent Diameter Predict Optimal Post-Stent Fractional Flow Reserve and Major Adverse Cardiac Events After Bare-Metal Stent Deployment. JACC Cardiovasc Interv 2009; 2:357-63. [DOI: 10.1016/j.jcin.2009.01.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2008] [Revised: 12/15/2008] [Accepted: 01/09/2009] [Indexed: 12/01/2022]
|
40
|
Ramcharitar S, Pugliese F, Schultz C, Ligthart J, de Feyter P, Li H, Mollet N, van de Ent M, Serruys PW, van Geuns RJ. Integration of multislice computed tomography with magnetic navigation facilitates percutaneous coronary interventions without additional contrast agents. J Am Coll Cardiol 2009; 53:741-6. [PMID: 19245963 DOI: 10.1016/j.jacc.2008.10.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2008] [Revised: 10/21/2008] [Accepted: 10/26/2008] [Indexed: 11/28/2022]
Abstract
OBJECTIVES We hypothesized that percutaneous coronary intervention (PCI) without additional contrast agents can be performed by directly integrating multislice computed tomography coronary angiography (CTCA) within the magnetic navigation system (MNS). BACKGROUND Increasingly, CTCA is being used in the diagnostic work-up of patients with coronary disease. Its inherent 3-dimensional information should be exploited, as it potentially offers advantages over 2-dimensional radiography in guiding invasive diagnostic and therapeutic interventions. METHODS CTCA-derived centerlines from 15 patients were coregistered and overlaid on real-time fluoroscopic images employing the MNS. Vessels were manually wired with a magnetically enabled guidewire assisted by variable local magnetic fields. Fractional flow reserve (FFR) determined the lesion severity, and the dimensions were quantified by intravascular ultrasound (IVUS). Locations of the IVUS catheter probe along the lesion were incorporated in software to facilitate stenting without contrast agents. RESULTS The average crossing and fluoroscopic times were 105.3 +/- 35.5 s and 83.4 +/- 38.6 s, respectively, with no contrast agents used in 11 of 15 patients (73.3%). Contrast agents were used in only 1 of 10 patients (10%) in whom an IVUS was performed. In 4 patients, apart from a "blinded" safety check angiogram, the entire PCI (lesion crossing, stent sizing, positioning, and deployment) was performed without additional contrast agents following the coregistration of the IVUS probe position in the MNS. CONCLUSIONS The integration of pre-procedural CTCA within the MNS can facilitate PCI without additional contrast agents.
Collapse
Affiliation(s)
- Steve Ramcharitar
- Department of Cardiology, The Thoraxcenter, Erasmus Medical Center, Rotterdam, the Netherlands
| | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Mishell JM, Vakharia KT, Ports TA, Yeghiazarians Y, Michaels AD. Determination of adequate coronary stent expansion using StentBoost, a novel fluoroscopic image processing technique. Catheter Cardiovasc Interv 2007; 69:84-93. [PMID: 17139686 DOI: 10.1002/ccd.20901] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE We tested the hypothesis that the use of motion-corrected fluoroscopic images results in enhanced coronary stent visualization and improved detection of inadequate stent expansion. BACKGROUND Intravascular ultrasound (IVUS) more accurately detects inadequate stent expansion when compared with coronary angiography. Stent under-expansion is associated with stent restenosis and thrombosis. Developing a technique to improve fluoroscopic-based assessment of stent expansion is desirable. METHODS We analyzed measurements of 48 coronary stents implanted in 30 patients using quantitative coronary angiography (QCA), IVUS, and StentBoost (SB), a novel fluoroscopic image processing technique. Correlations of stent diameter between the modalities were determined. Using established IVUS criteria for adequate stent deployment, we assessed the diagnostic test characteristics of SB to detect inadequate stent expansion. RESULTS Correlations of minimum stent diameter were highest between IVUS and SB (r=0.75; P<0.0001) when compared with QCA and IVUS (r=0.65; P<0.0001), and QCA and SB (r=0.49; P=0.0004). IVUS and SB demonstrated a small difference in minimum stent diameter, 0.043 mm (95% CI: 0.146-0.061 mm). The correlation between IVUS and SB was lower for vessels with intimal calcification (r=0.57; P=0.002) when compared with vessels with deeper calcification (r=0.84; P<0.0001). A SB minimum diameter of <2.5 mm predicted inadequate stent expansion by IVUS with 88% sensitivity, 70% specificity, and a positive likelihood ratio of 2.9. CONCLUSIONS SB had superior correlations for stent expansion measured by IVUS when compared with QCA. A minimum stent diameter by SB measurement<2.5 mm is associated with inadequate stent expansion using IVUS criteria.
Collapse
Affiliation(s)
- Jacob M Mishell
- Division of Cardiology, Department of Medicine, University of California, San Francisco, California, USA
| | | | | | | | | |
Collapse
|
42
|
Tobis J, Azarbal B, Slavin L. Assessment of intermediate severity coronary lesions in the catheterization laboratory. J Am Coll Cardiol 2007; 49:839-48. [PMID: 17320741 DOI: 10.1016/j.jacc.2006.10.055] [Citation(s) in RCA: 137] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2006] [Revised: 09/07/2006] [Accepted: 10/16/2006] [Indexed: 12/19/2022]
Abstract
The management of intermediate coronary lesions, defined by a diameter stenosis of 40% to 70%, continues to be a therapeutic dilemma for cardiologists. The 2-dimensional representation of the arterial lesion provided by angiography is limited in distinguishing intermediate lesions that require stenting from those that simply need appropriate medical therapy. In the era of drug-eluting stents, some might propose that stenting all intermediate coronary lesions is an appropriate solution. However, the possibility of procedural complications such as coronary dissection, no reflow phenomenon, in-stent restenosis, and stent thrombosis requires accurate stratification of patients with intermediate coronary lesions to appropriate therapy. Intravascular ultrasound (IVUS) and fractional flow reserve index (FFR) provide anatomic and functional information that can be used in the catheterization laboratory to designate patients to the most appropriate therapy. The purpose of this review is to discuss the critical information obtained from IVUS and FFR in guiding treatment of patients with intermediate coronary lesions. In addition, the importance of IVUS and FFR in the management of patients with serial stenosis, bifurcation lesions, left main disease, saphenous vein graft disease, and acute coronary syndrome will be discussed.
Collapse
Affiliation(s)
- Jonathan Tobis
- David Geffen School of Medicine at UCLA, Department of Medicine, Division of Cardiology, Los Angeles, California 90095-1717, USA.
| | | | | |
Collapse
|
43
|
Van Herck PL, Vrints CJ, Carlier SG. Coronary Circulation and Interventional Cardiology. Ann Biomed Eng 2005; 33:1735-42. [PMID: 16389522 DOI: 10.1007/s10439-005-8778-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2005] [Accepted: 06/03/2005] [Indexed: 10/25/2022]
Abstract
Cardiovascular disease has long been the leading cause of death in developed countries and it is rapidly becoming the number one killer in developing countries. Sudden heart attacks remain the primary cause of death in the United States: over 1.4 million attacks are suffered every year, more than half of which prove fatal. Interventional Cardiology is aimed to alleviate symptoms of cardiac pains and poor coronary circulation, and reduce the risk of death and nonfatal myocardial infarction. Our understanding of the coronary circulation has improved several folds due to the introduction of advance technologies. Yet, the microcirculatory flow needs future investigation.
Collapse
Affiliation(s)
- P L Van Herck
- Department of Cardiology, Antwerp University, Belgium
| | | | | |
Collapse
|
44
|
Choi CD, Savage J, Stephens DN, O'Donnell M. An integrated semicompliant balloon ultrasound catheter for quantitative feedback and image guidance during stent deployment. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2005; 52:1498-503. [PMID: 16285448 DOI: 10.1109/tuffc.2005.1516022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
An integrated balloon ultrasound catheter prototype was designed to image from inside the balloon for real-time guidance during stent deployment. It was fabricated using a semicompliant balloon material (polyethylene) and a 20 MHz, 64-element circumferential ultrasound array. A commercial stent, nominally 4.4 mm in diameter and 12 mm in length, was used for a phantom study and placed along the length of the integrated balloon ultrasound catheter. A rubber phantom was created with an elastic modulus of 175 kPa with a 4.36 mm diameter lumen. Real-time balloon pressure measurements were recorded using a digital pressure sensor, and real-time radio-frequency (RF) data were captured as the balloon was inflated. The slope of the area-pressure ratio (APR) was compared to a reference measure of the balloon and stent expanded in water to determine a measure for optimal stent deployment. The results clearly indicate stent deployment at 11.1 atm using this metric. The APR slope could serve as quantitative feedback parameter for guiding stent deployment to reduce arterial injury and subsequent restenosis. After the stent deployment experiment, RF data were captured as the balloon catheter was moved along the length of the stent in pullback mode to confirm successful stent deployment. Ultimately, an integrated balloon ultrasound catheter could serve as a single catheter intervention device by providing real-time intravascular ultrasound (IVUS) imaging and quantitative feedback during stent deployment.
Collapse
Affiliation(s)
- Charles D Choi
- Department of Biomedical Engineering, University of Michigan, Ann Arbor 48109-209, USA.
| | | | | | | |
Collapse
|
45
|
Claessens TE, Van Herck PL, Matthys KS, Segers P, Vrints CJ, Verdonck PR. Influence of zero flow pressure on fractional flow reserve. Biomech Model Mechanobiol 2004; 3:48-55. [PMID: 15249971 DOI: 10.1007/s10237-004-0045-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Fractional flow reserve (FFR) is a commonly used index to assess the functional severity of a coronary artery stenosis. It is conventionally calculated as the ratio of the pressure distal (Pd) and proximal (Pa) to the stenosis (FFR= Pd/Pa). We hypothesize that the presence of a zero flow pressure (Pzf), requires a modification of this equation. Using a dynamic hydraulic bench model of the coronary circulation, which allows one to incorporate an adjustable Pzf, we studied the relation between pressure-derived FFR = Pdo/Pa, flow-derived true FFRQ = Qs/QN (= ratio of flow through a stenosed vessel to flow through a normal vessel), and the corrected pressure-derived FFRc = (Pd-Pzf)/(Pa-Pzf) under physiological aortic pressures (70 mmHg, 90 mmHg, and 110 mmHg). Imposed Pzf values varied between 0 mmHg and 30 mmHg. FFRc was in good agreement with FFRQ, whereas FFR consistently overestimated FFRQ. This overestimation increased when Pzf increased, or when Pa decreased, and could be as high as 56% (Pzf=30 mmHg and Pa =70 mmHg). According to our experimental study, calculating the corrected FFRC instead of FFR, if Pzf is known, provides a physiologically more accurate evaluation of the functional severity of a coronary artery stenosis.
Collapse
Affiliation(s)
- Tom E Claessens
- Institute of Biomedical Technology (IBITECH), Hydraulics Laboratory, Ghent University, Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium.
| | | | | | | | | | | |
Collapse
|
46
|
Abstract
With growing numbers of patients with acute coronary syndromes undergoing catheterization without prior non-invasive imaging and the increasing numbers of patients with angiographic multivessel coronary artery disease, complementary physiologic lesion assessment for directing revascularization is of increasing value. Fractional flow reserve (FFR) has emerged as a simple, reliable, and reproducible physiologic index of lesion severity. In concert with coronary flow reserve, FFR yields significant information about the epicardial artery and the microvascular bed it subtends. This review will critically consider the theory of FFR measurements in the context of recent insights into coronary hemodynamics and how FFR measurements are significantly affected by microvascular disease states such as myocardial infarction, left ventricular hypertrophy, or diabetes mellitus. Clinical studies have demonstrated the usefulness of FFR for the assessment of intermediate lesions in single-vessel, multivessel, and possibly left main disease. In addition, measurement of fractional collateral flow reserve during angioplasty and FFR after stent deployment have prognostic value for major adverse cardiac events after percutaneous intervention. Furthermore, with economic concerns about the appropriate use of drug-eluting stents, FFR assessment can be used to direct percutaneous coronary intervention only to flow-limiting lesions and to achieve optimal stent deployment. Therefore, FFR represents a powerful new tool in the cardiologists' arsenal in the cardiac catheterization laboratory.
Collapse
Affiliation(s)
- Andrew H Bishop
- Cardiovascular Division, Department of Medicine, University of Virginia Health System, Charlottesville, Va 23502, USA
| | | |
Collapse
|
47
|
Orford JL, Lerman A, Holmes DR. Routine intravascular ultrasound guidance of percutaneous coronary intervention. J Am Coll Cardiol 2004; 43:1335-42. [PMID: 15093863 DOI: 10.1016/j.jacc.2003.12.035] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2003] [Revised: 12/08/2003] [Accepted: 12/09/2003] [Indexed: 11/20/2022]
Abstract
Intravascular ultrasound (IVUS) has played an integral role in the evolution of interventional cardiology. However, routine IVUS guidance of coronary stent implantation is not supported by a critical reappraisal of the available evidence. Although there is a trend toward a benefit with respect to target lumen revascularization favoring IVUS-guided coronary stent implantation, it is likely that this effect is driven by improved outcomes in small vessels, long coronary stenoses, and possibly saphenous vein graft interventions. No consistent trend in the incidence of death or myocardial infarction is apparent. Furthermore, the safety, efficacy, and effectiveness of IVUS should be taken into account when considering the goals, risks, benefits, and alternatives to such a treatment strategy.
Collapse
Affiliation(s)
- James L Orford
- Department of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA
| | | | | |
Collapse
|
48
|
Herrmann SC, El-Shafei A, Kern MJ. Current concepts in coronary physiology for the interventionalist. INTERNATIONAL JOURNAL OF CARDIOVASCULAR INTERVENTIONS 2003; 5:109-31. [PMID: 12959728 DOI: 10.1080/14628840310017357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Coronary angiography remains the 'gold standard' for the diagnosis of epicardial coronary disease. However, precise quantification of stenosis severity is limited because of the complex three-dimensional geometry of epicardial plaques. To assist the angiographer in lesion assessment, several physiologic measurements have been developed to evaluate stenosis severity, including coronary flow reserve, relative coronary flow reserve and fractional flow reserve. Physiologic lesion assessment can also be an invaluable tool in coronary intervention, evaluating efficacy of angioplasty and stent deployment.
Collapse
|
49
|
Ozdemir N, Kaymaz C, Kirma C, Akçay M, Yüce M, Turan F, Ozkan M. Intravascular ultrasound correlates of corrected TIMI framecount. JAPANESE HEART JOURNAL 2003; 44:213-24. [PMID: 12718483 DOI: 10.1536/jhj.44.213] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The TIMI frame count (TFC) is an index of coronary blood flow, and a correction in TFC (CTFC) for left anterior descending artery (LAD) has also been proposed. However, the relationship between TFC and intravascular ultrasound (IVUS) parameters of culprit coronary arteries has not been reported. The aim of this study was to investigate IVUS-derived correlates of TFC before and after stenting, and to assess the validation of its correction for LAD. The study population was comprised of 38 patients with acute coronary syndrome or stable coronary artery disease studied by IVUS before and after stenting (LAD 21, circumflex 8, right coronary artery 9). For LAD, CTFC was calculated by dividing the TFC by 1.7. Preintervention luminal % area stenosis was 82 +/- 12.3%. Pre- and postintervention target lesion lumen areas were 1.8 +/- 0.5 mm2 and 8.5 +/- 0.5 mm2 (P<0.0001), and CTFC were 35.3 +/- 16.8 and 16.9 +/- 4.3 (P<0.0001), respectively. In the 76 IVUS studies, CTFC showed a good correlation to luminal % area stenosis (r = 0.69, P<0.001), and a good and negative correlation to target lesion lumen area (r = -0.70, P<0.001). Postprocedural improvement in CTFC showed a modest correlation to acute lumen gain (r = 0.5, P<0.05). With respect to culprit arteries, pre and postintervention IVUS parameters and CTFC, and net CTFC change after stenting were not different (P>0.05). However, uncorrected TFC of LAD was significantly higher than both the CTFC of LAD and TFC of the other two coronary arteries (P<0.05). We conclude that CTFC is closely correlated to target lesion luminal area and luminal % area stenosis whereas a modest correlation is present between improvement in CTFC and acute luminal gain due to stenting. Results from different coronary arteries with comparable IVUS parameters seem to support the validity of a correction in TFC.
Collapse
Affiliation(s)
- Nihal Ozdemir
- Department of Cardiology, Kosuyolu Heart and Research Hospital, Istanbul, Turkey
| | | | | | | | | | | | | |
Collapse
|
50
|
Brosh D, Higano ST, Kern MJ, Lennon RJ, Holmes DR, Lerman A. Pulse transmission coefficient: A nonhyperemic index for physiologic assessment of procedural success following percutaneous coronary interventions. Catheter Cardiovasc Interv 2003; 61:95-102. [PMID: 14696166 DOI: 10.1002/ccd.10716] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Intracoronary pressure measurements and the determination of fractional flow reserve (FFR) after percutaneous coronary intervention (PCI) predict adverse events. Coronary lesions may impair the transmission of pressure waves across a stenosis, potentially acting as a high-frequency filter. The pulse transmission coefficient (PTC) is a nonhyperemic parameter that calculates the transmission of high-frequency components of the pressure signal through a stenosis. It was shown recently that PTC is highly correlated with FFR. This study was designed to examine the change of PTC as compared to FFR following PCI. Pressure signals were obtained by pressure guidewire in 27 lesions pre- and post-PCI and were analyzed with an algorithm that identifies the high-frequency component in the pressure signal. The PTC was calculated at baseline as the ratio between distal and proximal high-frequency components of the pressure waveform across the lesion. FFR measurements were assessed with intracoronary adenosine. There was a significant increase in PTC following PCI (0.15 +/- 0.17 at baseline vs. 0.84 +/- 0.11 post-PCI; P < 0.001). Comparable changes were observed for FFR (0.58 +/- 0.12 at baseline vs. 0.91 +/- 0.05 post-PCI; P < 0.001). PTC is a nonhyperemic parameter for physiologic assessment of coronary artery stenoses. Similar to FFR, PTC is significantly increased following PCI. Thus, it may serve as an adjunct index for the functional assessment of procedural success following PCI.
Collapse
Affiliation(s)
- David Brosh
- Cardiovascular Division, Mayo Clinic Foundation, Rochester, Minnesota 55902, USA
| | | | | | | | | | | |
Collapse
|