1
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Altstidl JM, Achenbach S, Feyrer J, Nazli JB, Marwan M, Gaede L, Möllmann H, Giesler T, Rittger H, Pauschinger M, Rudolph TK, Moshage W, Brück M, Tröbs M. Use of coronary physiology to guide revascularization in clinical practice: results of the F(FR) 2 registry. Clin Res Cardiol 2024; 113:1081-1091. [PMID: 38832995 PMCID: PMC11219411 DOI: 10.1007/s00392-024-02463-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 05/15/2024] [Indexed: 06/06/2024]
Abstract
BACKGROUND Despite the recommendation of coronary physiology to guide revascularization in angiographically intermediate stenoses without established correlation to ischemia, its uptake in clinical practice is slow. AIMS This study aimed to analyze the use of coronary physiology in clinical practice. METHODS Based on a multicenter registry (Fractional Flow Reserve Fax Registry, F(FR)2, ClinicalTrials.gov identifier NCT03055910), clinical use, consequences, and complications of coronary physiology were systematically analyzed. RESULTS F(FR)2 enrolled 2,000 patients with 3,378 intracoronary pressure measurements. Most measurements (96.8%) were performed in angiographically intermediate stenoses. Out of 3,238 lesions in which coronary physiology was used to guide revascularization, revascularization was deferred in 2,643 (78.2%) cases. Fractional flow reserve (FFR) was the most common pressure index used (87.6%), with hyperemia induced by an intracoronary bolus of adenosine in 2,556 lesions (86.4%) and intravenous adenosine used for 384 measurements (13.0%). The route of adenosine administration did not influence FFR results (change-in-estimate -3.1% for regression model predicting FFR from diameter stenosis). Agreement with the subsequent revascularization decision was 93.4% for intravenous and 95.0% for intracoronary adenosine (p = 0.261). Coronary artery occlusion caused by the pressure wire was reported in two cases (0.1%) and dissection in three cases (0.2%), which was fatal once (0.1%). CONCLUSIONS In clinical practice, intracoronary pressure measurements are mostly used to guide revascularization decisions in angiographically intermediate stenoses. Intracoronary and intravenous administration of adenosine seem equally suited. While the rate of serious complications of wire-based intracoronary pressure measurements in clinical practice seems to be low, it is not negligible.
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Affiliation(s)
- J Michael Altstidl
- Department of Medicine 2 - Cardiology and Angiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Ulmenweg 18, 91054, Erlangen, Germany
| | - Stephan Achenbach
- Department of Medicine 2 - Cardiology and Angiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Ulmenweg 18, 91054, Erlangen, Germany
| | - Johannes Feyrer
- Department of Medicine 2 - Cardiology and Angiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Ulmenweg 18, 91054, Erlangen, Germany
| | - J Benedikt Nazli
- Department of Medicine 2 - Cardiology and Angiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Ulmenweg 18, 91054, Erlangen, Germany
| | - Mohamed Marwan
- Department of Medicine 2 - Cardiology and Angiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Ulmenweg 18, 91054, Erlangen, Germany
| | - Luise Gaede
- Department of Medicine 2 - Cardiology and Angiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Ulmenweg 18, 91054, Erlangen, Germany
| | - Helge Möllmann
- Department of Medicine 1 - Cardiology, Nephrology, Intensive Care and Rhythmology, St. Johannes Hospital Dortmund, Dortmund, Germany
| | - Tom Giesler
- Department of Cardiology, Helios Klinik Jerichower Land, Burg, Germany
| | - Harald Rittger
- Department of Cardiology and Pulmonology, Hospital Fürth, Fürth, Germany
| | - Matthias Pauschinger
- Department of Medicine 8 - Cardiology, Nuremberg Hospital South, Nuremberg, Germany
| | - Tanja K Rudolph
- Department of General and Interventional Cardiology, Heart and Diabetes Center NRW, Bad Oeynhausen, Germany
| | - Werner Moshage
- Department of Cardiology, Hospital Traunstein, Traunstein, Germany
| | - Martin Brück
- Department of Medicine 1, Hospital Wetzlar, Wetzlar, Germany
| | - Monique Tröbs
- Department of Medicine 2 - Cardiology and Angiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Ulmenweg 18, 91054, Erlangen, Germany.
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2
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Wong CC, Yong AS. Quantitative Flow Ratio-Guided Revascularization: Equally Effective Between the Sexes. JACC. ASIA 2024; 4:213-215. [PMID: 38463682 PMCID: PMC10920045 DOI: 10.1016/j.jacasi.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Affiliation(s)
- Christopher C.Y. Wong
- Department of Cardiology, Concord Repatriation General Hospital, Concord, New South Wales, Australia
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Andy S.C. Yong
- Department of Cardiology, Concord Repatriation General Hospital, Concord, New South Wales, Australia
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3
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Pellegrini D, Caramori PRA, Soccol RC, Lasevitch R, Agostini GL, Dussin A, Ferreira FVC, Wagner MB, Bodanese LC. Prognostic Assessment of Fractional Flow Reserve in Different Strata in Patients with Coronary Artery Disease. Arq Bras Cardiol 2023; 120:e20211051. [PMID: 37341225 PMCID: PMC10263408 DOI: 10.36660/abc.20211051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 01/23/2023] [Accepted: 04/05/2023] [Indexed: 06/22/2023] Open
Abstract
BACKGROUND There are limited real-world data on the clinical course of untreated coronary lesions according to their functional severity. OBJECTIVE To evaluate the 5-year clinical outcomes of patients with revascularized lesions with fractional flow reserve (FFR) ≤ 0.8 and patients with non-revascularized lesions with FFR > 0.8. METHODS The FFR assessment was performed in 218 patients followed for up to 5 years. Participants were classified based on FFR into ischemia group (≤ 0.8, intervention group, n = 55), low-normal FFR group (> 0.8-0.9, n = 91), and high-normal FFR group (> 0.9, n = 72). The primary endpoint was major adverse cardiac events (MACEs), a composite of death, myocardial infarction, and need for repeat revascularization. The significance level was set at 0.05; therefore, results with a p-value < 0.05 were considered statistically significant. RESULTS Most patients were male (62.8%) with a mean age of 64.1 years. Diabetes was present in 27%. On coronary angiography, the severity of stenosis was 62% in the ischemia group, 56.4% in the low-normal FFR group, and 54.3% in the high-normal FFR group (p<0.05). Mean follow-up was 3.5 years. The incidence of MACEs was 25.5%, 13.2%, and 11.1%, respectively (p=0.037). MACE incidence did not differ significantly between the low-normal and high-normal FFR groups. CONCLUSION Patients with FFR indicative of ischemia had poorer outcomes than those in non-ischemia groups. There was no difference in the incidence of events between the low-normal and high-normal FFR groups. Long-term studies with a large sample size are needed to better assess cardiovascular outcomes in patients with moderate coronary stenosis with FFR values between 0.8 and 1.0.
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Affiliation(s)
- Denise Pellegrini
- Pontifícia Universidade Católica do Rio Grande do SulPorto AlegreRSBrasilPontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS – Brasil
| | - Paulo R. A. Caramori
- Hospital São LucasPUCRSPorto AlegreRSBrasilHospital São Lucas da PUCRS, Porto Alegre, RS – Brasil
| | - Ricardo Czarnobai Soccol
- Hospital São LucasPUCRSPorto AlegreRSBrasilHospital São Lucas da PUCRS, Porto Alegre, RS – Brasil
| | - Ricardo Lasevitch
- Hospital São LucasPUCRSPorto AlegreRSBrasilHospital São Lucas da PUCRS, Porto Alegre, RS – Brasil
| | - Gustavo Luís Agostini
- Hospital São LucasPUCRSPorto AlegreRSBrasilHospital São Lucas da PUCRS, Porto Alegre, RS – Brasil
| | - Alice Dussin
- Pontifícia Universidade Católica do Rio Grande do SulPorto AlegreRSBrasilPontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS – Brasil
| | | | - Mario Bernardes Wagner
- Pontifícia Universidade Católica do Rio Grande do SulPorto AlegreRSBrasilPontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS – Brasil
| | - Luiz Carlos Bodanese
- Hospital São LucasPUCRSPorto AlegreRSBrasilHospital São Lucas da PUCRS, Porto Alegre, RS – Brasil
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4
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Premaratne M, Garcia GP, Thomas W, Hameed S, Leadbeatter A, Htun N, Dwivedi G, Kaye DM. Opportunities and Challenges of Computed Tomography Coronary Angiography in the Investigation of Chest Pain in the Emergency Department-A Narrative Review. Heart Lung Circ 2023; 32:307-314. [PMID: 36621394 DOI: 10.1016/j.hlc.2022.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 11/02/2022] [Accepted: 12/06/2022] [Indexed: 01/07/2023]
Abstract
Chest pain is one of the most common presentations to emergency departments. However, only 5.1% will be diagnosed with an acute coronary syndrome, representing considerable time and expense in the diagnosis and investigation of the patients eventually found not to be suffering from an acute coronary syndrome. PubMed and Medline databases were searched with variations of the terms "chest pain", "emergency department", "computed tomography coronary angiography". After review, 52 articles were included. Computed tomography coronary angiography (CTCA) is a class I endorsement for investigating chest pain in major international societal guidelines. CTCA offers excellent sensitivity and negative predictive value in identifying patients with coronary disease, with prognostic data impacting patient management. If CTCA is to be applied to all comers, it is pertinent to discuss the advantages and potential pitfalls if use in the Australian system is to be increased.
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Affiliation(s)
- Manuja Premaratne
- Department of Medicine, Cardiology, Peninsula Health, Melbourne, Vic, Australia.
| | | | - William Thomas
- Department of Radiology, Peninsula Health, Melbourne, Vic, Australia
| | - Shaiq Hameed
- Department of Medicine, Peninsula Health, Melbourne, Vic, Australia
| | | | - Nay Htun
- Department of Medicine, Cardiology, Peninsula Health, Melbourne, Vic, Australia
| | - Girish Dwivedi
- Department of Cardiology, Harry Perkins Institute of Medical Research, Perth, WA, Australia
| | - David M Kaye
- Department of Cardiology, Alfred Health, Melbourne, Vic, Australia
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5
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Agujetas R, Ferrera C, González-Fernández R, Nogales-Asensio JM, Fernández-Tena A. Influence of the position of the distal pressure measurement point on the Fractional Flow Reserve using in-silico simulations. Biocybern Biomed Eng 2022. [DOI: 10.1016/j.bbe.2022.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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6
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Freitas SA, Nienow D, da Costa CA, Ramos GDO. Functional Coronary Artery Assessment: a Systematic Literature Review. Wien Klin Wochenschr 2021; 134:302-318. [PMID: 34870740 DOI: 10.1007/s00508-021-01970-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 10/11/2021] [Indexed: 11/28/2022]
Abstract
Cardiovascular diseases represent the number one cause of death in the world, including the most common disorders in the heart's health, namely coronary artery disease (CAD). CAD is mainly caused by fat accumulated in the arteries' internal walls, creating an atherosclerotic plaque that impacts the blood flow functional behavior. Anatomical plaque characteristics are essential but not sufficient for a complete functional assessment of CAD. In fact, plaque analysis and visual inspection alone have proven insufficient to determine the lesion severity and hemodynamic repercussion. Furthermore, the fractional flow reserve (FFR) exam, which is considered the gold standard for stenosis functional impair determination, is invasive and contains several limitations. Such a panorama evidences the need for new techniques applied to image exams to improve CAD functional assessment. In this article, we perform a systematic literature review on emerging methods determining CAD significance, thus delivering a unique base for comparing these methods, qualitatively and quantitatively. Our goal is to guide further studies with evidence from the most promising methods, highlighting the benefits from both areas. We summarize benchmarks, metrics for evaluation, and challenges already faced, thus shedding light on the requirements for a valid, meaningful, and accepted technique for functional assessment evaluation. We create a base of comparison based on quantitative and qualitative indicators and highlight the most relevant geometrical metrics that correlate with lesion significance. Finally, we point out future benchmarks based on recent literature.
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Affiliation(s)
- Samuel A Freitas
- Software Innovation Laboratory, Graduate Program in Applied Computing, Universidade do Vale do Rio dos Sinos, São Leopoldo, Brazil
| | - Débora Nienow
- Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Cristiano A da Costa
- Software Innovation Laboratory, Graduate Program in Applied Computing, Universidade do Vale do Rio dos Sinos, São Leopoldo, Brazil
| | - Gabriel de O Ramos
- Software Innovation Laboratory, Graduate Program in Applied Computing, Universidade do Vale do Rio dos Sinos, São Leopoldo, Brazil.
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7
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Influence of lesion and disease subsets on the diagnostic performance of the quantitative flow ratio in real-world patients. Sci Rep 2021; 11:2995. [PMID: 33542310 PMCID: PMC7862355 DOI: 10.1038/s41598-021-82235-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 01/08/2021] [Indexed: 11/26/2022] Open
Abstract
The quantitative flow ratio (QFR) is a novel angiography-based computational method assessing functional ischemia caused by coronary stenosis. This study aimed to evaluate the diagnostic performance of quantitative flow ratio (QFR) in patients with angina and acute myocardial infarction (AMI) and to identify the conditions with low diagnostic performance. We assessed the QFR for 1077 vessels under fractional flow ratio (FFR) evaluation in 915 patients with angina and AMI. The diagnostic accuracies of the QFR for identifying an FFR ≤ 0.8 were 95.98% (95% confidence interval [CI] 94.52 to 97.14%) for the angina group and 92.42% (95% CI 86.51 to 96.31%) for the AMI group. The diagnostic accuracy of the QFR in the borderline FFR zones (> 0.75, ≤ 0.85) (91.23% [95% CI 88.25 to 93.66%]) was significantly lower than that in others (difference: 4.32; p = 0.001). The condition accompanying both AMI and the borderline FFR zone showed the lowest QFR diagnostic accuracy in our data (83.93% [95% CI 71.67 to 92.38]). The diagnostic accuracy was reduced for tandem lesions (p = 0.04, not correcting for multiple testing). Our study found that the QFR method yielded a high overall diagnostic performance in real-world patients. However, low diagnostic accuracy has been observed in borderline FFR zones with AMI, and the hybrid FFR approach needs to be considered.
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8
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A case report of significant progression after FFR-guided deferred PCI. J Geriatr Cardiol 2020; 17:649-652. [PMID: 33224187 PMCID: PMC7657948 DOI: 10.11909/j.issn.1671-5411.2020.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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9
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Fractional Flow Reserve following Percutaneous Coronary Intervention. J Interv Cardiol 2020; 2020:7467943. [PMID: 32565755 PMCID: PMC7293753 DOI: 10.1155/2020/7467943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 05/05/2020] [Accepted: 05/11/2020] [Indexed: 11/18/2022] Open
Abstract
Fractional flow reserve (FFR) is routinely used to determine lesion severity prior to percutaneous coronary intervention (PCI). However, there is an increasing recognition that FFR may also be useful following PCI to identify mechanisms leading to restenosis and the need for repeat revascularization. Post-PCI FFR is associated with the presence and severity of stent under-expansion and may help identify peri-stent-related complications. FFR pullback may also unmask other functionally significant lesions within the target vessel that were not appreciable on angiography. Recent studies have confirmed the prognostic utility of performing routine post-PCI FFR and suggest possible interventional targets that would improve stent durability. In this review, we detail the theoretical basis underlying post-PCI FFR, provide practical tips to facilitate measurement, and discuss the growing evidence supporting its use.
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10
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Ihdayhid AR, Sapontis J. The fractional flow reserve grey zone: a blueprint for the future of coronary revascularisation. Heart 2020; 106:714-715. [PMID: 32114517 DOI: 10.1136/heartjnl-2019-316435] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
| | - James Sapontis
- MonashHeart, Monash Medical Centre, Clayton, Victoria, Australia
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11
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Ihdayhid AR, Koh JS, Ramzy J, Kumar A, Michail M, Brown A, Samady H. The Role of Fractional Flow Reserve and Instantaneous Wave-Free Ratio Measurements in Patients with Acute Coronary Syndrome. Curr Cardiol Rep 2019; 21:159. [PMID: 31768835 DOI: 10.1007/s11886-019-1233-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
PURPOSE OF REVIEW The role of fractional flow reserve to guide revascularization in patients with stable angina is well established. The instantaneous wave-free ratio (iFR) is an emerging adenosine-free resting index that is non-inferior to FFR and has potential to streamline the functional evaluation of coronary artery disease. The feasibility and utility of intracoronary physiology in patients with acute coronary syndrome (ACS) is unclear. This review will discuss the physiological principles and validity of using FFR and iFR in patients presenting with ACS. We will also provide an overview of the available evidence for their role in guiding revascularization in this patient group. RECENT FINDINGS The use of intracoronary physiology in culprit lesions of patients presenting with STEMI is not recommended and its accuracy is uncertain in patients with NSTEMI. In contrast, the physiological assessment of non-culprit vessels with FFR and IFR is a reliable measure of lesion-specific ischemia. Recent studies have demonstrated that FFR-guided revascularization of non-culprit lesions improves clinical outcomes although the role of iFR in this patient cohort is unknown. Physiology-guided revascularization of non-culprit ACS lesions improves clinical outcomes. Future studies investigating the complementary role of plaque morphology, biomechanics, and systemic inflammation may provide clinicians with a more comprehensive framework to guide treatment decisions.
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Affiliation(s)
- Abdul Rahman Ihdayhid
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Australia
| | - Jin-Sin Koh
- Department of Internal Medicine, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea.,Andreas Gruentzig Cardiovascular Center, Division of Cardiology, Department of Medicine, Emory University School of Medicine, 1364 Clifton Road, Suite F606, Atlanta, GA, 30322, USA
| | - John Ramzy
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Australia
| | - Arnav Kumar
- Andreas Gruentzig Cardiovascular Center, Division of Cardiology, Department of Medicine, Emory University School of Medicine, 1364 Clifton Road, Suite F606, Atlanta, GA, 30322, USA
| | - Michael Michail
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Australia.,Institute of Cardiovascular Science, University College London, London, UK
| | - Adam Brown
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Australia
| | - Habib Samady
- Department of Internal Medicine, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea. .,Andreas Gruentzig Cardiovascular Center, Division of Cardiology, Department of Medicine, Emory University School of Medicine, 1364 Clifton Road, Suite F606, Atlanta, GA, 30322, USA.
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12
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Renard BM, Cami E, Jiddou-Patros MR, Said A, Kado H, Trivax J, Berman A, Gulati A, Rabah M, Timmis S, Shoukfeh M, Abbas AE, Hanzel G, Hanson I, Dixon S, Safian RD. Optimizing the Technique for Invasive Fractional Flow Reserve to Assess Lesion-Specific Ischemia. Circ Cardiovasc Interv 2019; 12:e007939. [DOI: 10.1161/circinterventions.119.007939] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
Invasive fractional flow reserve (FFR
INV
) is the standard technique for assessing myocardial ischemia. Pressure distortions and measurement location may influence FFR
INV
interpretation. We report a technique for performing invasive fractional flow reserve (FFR
INV
) by minimizing pressure distortions and identifying the proper location to measure FFR
INV
.
Methods:
FFR
INV
recordings were obtained prospectively during manual hyperemic pullback in 100 normal and diseased coronary arteries with single stenosis, using 4 measurements from the terminal vessel, distal-to-the-lesion, proximal vessel, and guiding catheter. FFR
INV
profiles were developed by plotting FFR
INV
values (
y
-axis) and site of measurement (
x
-axis), stratified by stenosis severity. FFR
INV
≤0.8 was considered positive for lesion-specific ischemia.
Results:
Erroneous FFR
INV
values were observed in 10% of vessels because of aortic pressure distortion and in 21% because of distal pressure drift; these were corrected by disengagement of the guiding catheter and re-equalization of distal pressure/aortic pressure, respectively. There were significant declines in FFR
INV
from the proximal to the terminal vessel in normal and stenotic coronary arteries (
P
<0.001). The rate of positive FFR
INV
was 41% when measured from the terminal vessel and 20% when measured distal-to-the-lesion (
P
<0.001); 41.5% of positive terminal measurements were reclassified to negative when measured distal-to-the-lesion. Measuring FFR
INV
20 to 30 mm distal-to-the-lesion (rather than from the terminal vessel) can reduce errors in measurement and optimize the assessment of lesion-specific ischemia.
Conclusions:
Meticulous technique (disengagement of the guiding catheter, FFR
INV
pullback) is required to avoid erroneous FFR
INV
, which occur in 31% of vessels. Even with optimal technique, FFR
INV
values are influenced by stenosis severity and the site of pressure measurement. FFR
INV
values from the terminal vessel may overestimate lesion-specific ischemia, leading to unnecessary revascularization.
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Affiliation(s)
- Brian M. Renard
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Elvis Cami
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | | | - Ahmad Said
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Herman Kado
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Justin Trivax
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Aaron Berman
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Akhil Gulati
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Maher Rabah
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Steven Timmis
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Mazen Shoukfeh
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Amr E. Abbas
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - George Hanzel
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Ivan Hanson
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Simon Dixon
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
| | - Robert D. Safian
- Department of Cardiovascular Medicine, William Beaumont Hospital, Royal Oak, MI
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13
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Meta-Analysis of Diagnostic Performance of Instantaneous Wave-Free Ratio versus Quantitative Flow Ratio for Detecting the Functional Significance of Coronary Stenosis. BIOMED RESEARCH INTERNATIONAL 2019; 2019:5828931. [PMID: 31119175 PMCID: PMC6500690 DOI: 10.1155/2019/5828931] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 03/24/2019] [Accepted: 04/03/2019] [Indexed: 01/10/2023]
Abstract
Background Fractional flow reserve (FFR), as a functional measurement of coronary stenosis, is recommended for guiding revascularization in intermediate coronary lesions. However, it still remains underutilized for potential reasons including time consumption, costs, or contraindications associated with adenosine administration. Here we performed this meta-analysis to assess the diagnostic performance of two adenosine-free indices, instantaneous wave free-ratio (iFR), and quantitative flow ratio (QFR) in evaluating coronary stenosis severity with FFR as the reference standard. Methods PubMed, Embase, and Cochrane Central Register of Controlled Trials (CENTRAL) were searched to include relevant studies with the diagnostic accuracy of iFR or QFR referenced to FFR. A bivariate model was applied to pool diagnostic parameters. We used Cochran's Q test and I2 index to assess heterogeneity and identify the potential source of heterogeneity by meta-regression. Results A total of 8213 lesions from 28 studies (19 for iFR and 9 for QFR) were included in this meta-analysis. The pooled sensitivity and specificity were 0.79 (95% CI, 0.75 to 0.83) and 0.85 (95% CI, 0.82 to 0.87) for iFR and 0.90 (95% CI, 0.84 to 0.93) and 0.88 (95% CI, 0.86 to 0.90) for QFR, respectively. Significantly higher sensitivity and specificity were observed in the bivariate analysis for QFR than for iFR (P < 0.001 for both). The area under summary receiver-operating curve of iFR and QFR was 0.89 (95% CI, 0.86 to 0.92) and 0.92 (95% CI, 0.89 to 0.94). Conclusion Evidence suggests that both of the two indices have good performance in detecting functional ischemia of coronary arteries and QFR might be a promising method without requiring the pressure wire. Further application of QFR may potentially provide important information to clinicians in the assessment of coronary lesions.
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14
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Nørgaard BL, Ko B. Angiography based quantitative flow ratio in coronary artery disease: Mimic of FFR - Ready for clinical use? Int J Cardiol 2019; 279:29-30. [PMID: 30612849 DOI: 10.1016/j.ijcard.2018.12.070] [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: 12/20/2018] [Accepted: 12/24/2018] [Indexed: 11/18/2022]
Affiliation(s)
- B L Nørgaard
- Department Cardiology, Aarhus University Hospital, Aarhus, Denmark.
| | - B Ko
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Clayton, Victoria, Australia
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15
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Allaqaband H, Gutterman DD, Kadlec AO. Physiological Consequences of Coronary Arteriolar Dysfunction and Its Influence on Cardiovascular Disease. Physiology (Bethesda) 2019; 33:338-347. [PMID: 30109826 DOI: 10.1152/physiol.00019.2018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
To date, the major focus of diagnostic modalities and interventions to treat coronary artery disease has been the large epicardial vessels. Despite substantial data showing that microcirculatory dysfunction is a strong predictor of future adverse cardiovascular events, very little research has gone into developing techniques for in vivo diagnosis and therapeutic interventions to improve microcirculatory function. In this review, we will discuss the pathophysiology of coronary arteriolar dysfunction, define its prognostic implications, evaluate the diagnostic modalities available, and provide speculation on current and potential therapeutic opportunities.
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Affiliation(s)
- Hassan Allaqaband
- Cardiovascular Center, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - David D Gutterman
- Cardiovascular Center, Medical College of Wisconsin , Milwaukee, Wisconsin.,Department of Physiology, Medical College of Wisconsin , Milwaukee, Wisconsin.,Department of Medicine, Division of Cardiology, Medical College of Wisconsin , Milwaukee, Wisconsin.,Department of Veterans Administration Medical Center, Milwaukee, Wisconsin
| | - Andrew O Kadlec
- Cardiovascular Center, Medical College of Wisconsin , Milwaukee, Wisconsin.,Department of Physiology, Medical College of Wisconsin , Milwaukee, Wisconsin.,Department of Medicine, Division of Cardiology, Medical College of Wisconsin , Milwaukee, Wisconsin
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Mangiacapra F, Bressi E, Sticchi A, Morisco C, Barbato E. Fractional flow reserve (FFR) as a guide to treat coronary artery disease. Expert Rev Cardiovasc Ther 2018; 16:465-477. [PMID: 29923434 DOI: 10.1080/14779072.2018.1489236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
INTRODUCTION The presence and extent of myocardial ischemia are the major determinants of prognosis in patients with coronary artery disease (CAD). Unlike coronary angiography alone, fractional flow reserve (FFR) has enabled interventional cardiologists to accurately determine whether coronary atherosclerotic plaques are responsible for myocardial ischemia, and therefore deserve to be revascularized. Areas covered: An overview on the role of FFR in the diagnosis and treatment of coronary artery disease, as well as the potential related controversies is provided. Authors describe the coronary physiology underneath this technique and all the procedural aspects in the catheterization laboratory. The landmark trials and the current applications in different coronary lesions and syndromes are also described and potential future research involving FFR and comparisons with other methodologies for the evaluation of coronary physiology are introduced. Expert commentary: FFR is still unsurpassed in diagnostic performance when compared to non-hyperemic indices and noninvasive techniques, and remains the gold standard for the detection of ischemia-inducing coronary stenoses. FFR-guided PCI has been demonstrated superior to an angiography-guided PCI and over medical therapy alone, and ongoing investigation will clarify whether it could perform better, or at least equalize the results of cardiac surgery in patients with severe multivessel disease.
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Affiliation(s)
- Fabio Mangiacapra
- a Unit of Cardiovascular Science , Campus Bio-Medico University , Rome , Italy
| | - Edoardo Bressi
- a Unit of Cardiovascular Science , Campus Bio-Medico University , Rome , Italy
| | - Alessandro Sticchi
- a Unit of Cardiovascular Science , Campus Bio-Medico University , Rome , Italy
| | - Carmine Morisco
- b Department of Advanced Biomedical Sciences , University of Naples Federico II , Napoli , Italy
| | - Emanuele Barbato
- b Department of Advanced Biomedical Sciences , University of Naples Federico II , Napoli , Italy.,c Cardiovascular Research Center Aalst , OLV Hospital , Aalst , Belgium
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