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Nijjer SS. Using Physiology Pullback for Percutaneous Coronary Intervention Guidance: Is this the Future? Cardiol Clin 2024; 42:41-53. [PMID: 37949539 DOI: 10.1016/j.ccl.2023.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Modern coronary intervention requires integration of angiographic, physiologic, and intravascular imaging. This article describes the use and techniques needed to understand coronary physiology pullback data and how use it to make revascularization decisions. The article describes instantaneous wave-free ratio, fractional flow reserve, and the data that support their use and how they differ when used in tandem disease. Common practical mistakes and errors are discussed together with a brief review of the limited published research data.
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Affiliation(s)
- Sukhjinder Singh Nijjer
- Department of Cardiology, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0HS, United Kingdom. https://twitter.com/SukhNijjer
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2
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Fawaz S, Cook CM. Understanding the Basis for Hyperemic and Nonhyperemic Coronary Pressure Assessment. Cardiol Clin 2024; 42:1-11. [PMID: 37949531 DOI: 10.1016/j.ccl.2023.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Despite the now routine integration of invasive physiologic systems into coronary catheter laboratories worldwide, it remains critical that all operators maintain a sound understanding of the fundamental physiologic basis for coronary pressure assessment. More specifically, performing operators should be well informed regarding the basis for hyperemic (ie, fractional flow reserve) and nonhyperemic (ie, instantaneous wave-free ratio and other nonhyperemic pressure ratio) coronary pressure assessment. In this article, we provide readers a comprehensive history charting the inception, development, and validation of hyperemic and nonhyperemic coronary pressure assessment.
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Affiliation(s)
- Samer Fawaz
- Essex Cardiothoracic Centre, Mid and South Essex NHS Hospitals Trust, Basildon SS16 5NL, United Kingdom; Anglia Ruskin University, Chelmsford, Essex CM1 1SQ, United Kingdom
| | - Christopher M Cook
- Essex Cardiothoracic Centre, Mid and South Essex NHS Hospitals Trust, Basildon SS16 5NL, United Kingdom; Anglia Ruskin University, Chelmsford, Essex CM1 1SQ, United Kingdom.
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Joseph T, Foley M, Al-Lamee R. Physiology and Intravascular Imaging Coregistration-Best of all Worlds? Cardiol Clin 2024; 42:77-87. [PMID: 37949541 DOI: 10.1016/j.ccl.2023.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Percutaneous coronary intervention is increasingly guided by coronary physiology and optimized using intravascular imaging. Pressure-based measurements determine the significance of a stenosis using hyperemic or nonhyperemic pressure ratios (eg, the instantaneous wave-free ratio). Intravascular ultrasound and optical coherence tomography provide cross-sectional and longitudinal detail regarding plaque composition and vessel characteristics. These facilitate lesion preparation and optimization of stent sizing and positioning. This review explores the evidence-base and practical aspects of coregistering pressure gradient assessment and intravascular imaging with angiography. We then discuss gaps in the evidence and what is needed to help integrate these techniques into clinical practice.
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Affiliation(s)
- Tobin Joseph
- National Heart and Lung Institute, Imperial College London, Du Cane Road, London, W120HS, UK; Imperial College Healthcare NHS Trust, Du Cane Road, London, W120HS, UK
| | - Michael Foley
- National Heart and Lung Institute, Imperial College London, Du Cane Road, London, W120HS, UK; Imperial College Healthcare NHS Trust, Du Cane Road, London, W120HS, UK.
| | - Rasha Al-Lamee
- National Heart and Lung Institute, Imperial College London, Du Cane Road, London, W120HS, UK; Imperial College Healthcare NHS Trust, Du Cane Road, London, W120HS, UK; Hammersmith Hospital, Du Cane Road, London W12 0HS, UK
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4
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Pintea Bentea G, Berdaoui B, Samyn S, Morissens M, van de Borne P, Castro Rodriguez J. Major Adverse Cardiac Events After Fractional Flow Reserve, Instantaneous Wave-Free Ratio, or Angiography-Guided Revascularization in Atrial Fibrillation: A Retrospective Study. Am J Cardiol 2024; 211:69-71. [PMID: 38180036 DOI: 10.1016/j.amjcard.2023.10.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/21/2023] [Accepted: 10/24/2023] [Indexed: 01/06/2024]
Affiliation(s)
| | | | - Sophie Samyn
- Department of Cardiology, CHU Brugmann, Brussels, Belgium
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Elbadawi A, Sedhom R, Ghoweba M, Etewa AM, Kayani W, Rahman F. Contemporary Use of Coronary Physiology in Cardiology. Cardiol Ther 2023; 12:589-614. [PMID: 37668939 DOI: 10.1007/s40119-023-00329-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 08/11/2023] [Indexed: 09/06/2023] Open
Abstract
Coronary angiography has a limited ability to predict the functional significance of intermediate coronary lesions. Hence, physiological assessment of coronary lesions, via fractional flow reserve (FFR) or instantaneous wave-free ratio (iFR), has been introduced to determine their functional significance. An accumulating body of evidence has consolidated the role of physiology-guided revascularization, particularly among patients with stable ischemic heart disease. The use of FFR or iFR to guide decision-making in patients with stable ischemic heart disease and intermediate coronary lesions received a class I recommendation from major societal guidelines. Nevertheless, the role of coronary physiology testing is less clear among certain patients' groups, including patients with serial coronary lesions, acute coronary syndromes, aortic stenosis, heart failure, as well as post-percutaneous coronary interventions. In this review, we aimed to discuss the utility and clinical evidence of coronary physiology (mainly FFR and iFR), with emphasis on those specific patient groups.
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Affiliation(s)
- Ayman Elbadawi
- Division of Cardiology, Christus Good Shepherd, 707 East Marshall Avenue, Longview, TX, 75604, USA.
| | - Ramy Sedhom
- Department of Internal Medicine, Einstein Medical Centre, Philadelphia, PA, USA
| | - Mohamed Ghoweba
- Department of Internal Medicine, Christus Good Shepherd, Longview, TX, 75601, USA
| | | | - Waleed Kayani
- Section of Cardiology, Baylor College of Medicine, Houston, TX, USA
| | - Faisal Rahman
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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6
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Berry C, McClure JD, Oldroyd KG. Coronary revascularization guided by instantaneous wave-free ratio compared with fractional flow reserve: pooled 5-year mortality in the DEFINE-FLAIR and iFR-SWEDEHEART trials. Eur Heart J 2023; 44:4388-4390. [PMID: 37634165 PMCID: PMC10627273 DOI: 10.1093/eurheartj/ehad552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/06/2023] [Accepted: 08/17/2023] [Indexed: 08/29/2023] Open
Affiliation(s)
- Colin Berry
- School of Cardiovascular and Metabolic Health, British Heart Foundation Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health, University of Glasgow, 126 University Place, Glasgow G12 8TA, UK
| | - John D McClure
- School of Cardiovascular and Metabolic Health, British Heart Foundation Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health, University of Glasgow, 126 University Place, Glasgow G12 8TA, UK
| | - Keith G Oldroyd
- Department of Cardiology, West of Scotland Regional Heart and Lung Centre, Golden Jubilee National Hospital, Clydebank G81 4DY, UK
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Vasiljevs D, Kakurina N, Pontaga N, Kokina B, Osipovs V, Sorokins N, Pikta S, Trusinskis K, Lejnieks A. Culprit versus Complete Revascularization during the Initial Intervention in Patients with Acute Coronary Syndrome Using a Virtual Treatment Planning Tool: Results of a Single-Center Pilot Study. Medicina (Kaunas) 2023; 59:medicina59020270. [PMID: 36837471 PMCID: PMC9967361 DOI: 10.3390/medicina59020270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 01/12/2023] [Accepted: 01/27/2023] [Indexed: 02/01/2023]
Abstract
Background and Objectives: The revascularization strategy for percutaneous coronary intervention (PCI) in patients with multivessel (MV) acute coronary syndrome (ACS) remains controversial. Certain gaps in the evidence are related to the optimal timing of non-culprit lesion revascularization and the utility of instantaneous wave-free ratio (iFR) in the management of MV ACS intervention. The major benefits of iFR utilization in MV ACS patients in one-stage complete revascularization are: (1) the possibility to virtually plan the PCI, both the location and the extension of the necessary stenting to achieve the prespecified final hemodynamic result; (2) the opportunity to validate the final hemodynamic result of the PCI, both in culprit artery and all non-culprit arteries and (3) the value of obliviating the uncomfortable, costly, time consuming and sometimes deleterious effects from Adenosine, as there is no requirement for administration. Thus, iFR use fosters the achievement of physiologically appropriate complete revascularization in MV ACS patients during acute hospitalization. Materials and Methods: This pilot study was aimed to test the feasibility of a randomized trial research protocol as well as to assess patient safety signals of co-registration iFR-guided one-stage complete revascularization compared with that of standard staged angiography-guided PCI in de novo patients with MV ACS. This was a single-center, prospective, randomized, open-label clinical trial consecutively screening patients with ACS for MV disease. The intervention strategy of interest was iFR-guided physiologically complete one-stage revascularization, in which the virtual PCI planning of non-culprit lesions and the intervention itself were performed in one stage directly following treatment of the culprit lesion and other critical stenosis of more than ninety percent. Seventeen patients were recruited and completed the 3-month follow-up. Results: Index PCI duration was significantly longer while the volume of contrast media delivered in index PCI was significantly greater in the iFR-guided group than in the angiography-guided group (119.4 ± 40.7 vs. 47 ± 15.5 min, p = 0.004; and 360 ± 97.9 vs. 192.5 ± 52.8 mL, p = 0.003). There were no significant differences in PCI-related major adverse cardiovascular events (MACE) between the groups during acute hospitalization and at 3-months follow-up. One-stage iFR-guided PCI requires fewer PCI attempts until complete revascularization than does angiography-guided staged PCI. Conclusions: Complete revascularization with the routine use of the virtual planning tool in one-stage iFR-guided PCI is a feasible practical strategy in an everyday Cath lab environment following the protocol designed for the study. No statistically significant safety signals were documented in the number of PCI related MACE during the 3-month follow-up.
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Affiliation(s)
- Deniss Vasiljevs
- Daugavpils Regional Hospital, 20 Vasarnicu Str., LV-5417 Daugavpils, Latvia
- Department of Internal Diseases, Riga Stradins University, 16 Dzirciema Str., LV-1007 Riga, Latvia
- Correspondence: ; Tel.: +371-6544-0858
| | - Natalja Kakurina
- Daugavpils Regional Hospital, 20 Vasarnicu Str., LV-5417 Daugavpils, Latvia
| | - Natalja Pontaga
- Daugavpils Regional Hospital, 20 Vasarnicu Str., LV-5417 Daugavpils, Latvia
| | - Baiba Kokina
- Department of Internal Diseases, Riga Stradins University, 16 Dzirciema Str., LV-1007 Riga, Latvia
| | - Vladimirs Osipovs
- Daugavpils Regional Hospital, 20 Vasarnicu Str., LV-5417 Daugavpils, Latvia
| | - Nikolajs Sorokins
- Daugavpils Regional Hospital, 20 Vasarnicu Str., LV-5417 Daugavpils, Latvia
| | - Sergejs Pikta
- Daugavpils Regional Hospital, 20 Vasarnicu Str., LV-5417 Daugavpils, Latvia
| | - Karlis Trusinskis
- Department of Internal Diseases, Riga Stradins University, 16 Dzirciema Str., LV-1007 Riga, Latvia
- Latvian Center of Cardiology, Pauls Stradins Clinical University Hospital, 13 Pilsonu Str., LV-1002 Riga, Latvia
| | - Aivars Lejnieks
- Department of Internal Diseases, Riga Stradins University, 16 Dzirciema Str., LV-1007 Riga, Latvia
- Riga East Clinical University Hospital, 2 Hipokrata Str., LV-1038 Riga, Latvia
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8
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Joseph T, Foley M, Al-Lamee R. Physiology and Intravascular Imaging Coregistration-Best of all Worlds? Interv Cardiol Clin 2023; 12:71-82. [PMID: 36372463 DOI: 10.1016/j.iccl.2022.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Percutaneous coronary intervention is increasingly guided by coronary physiology and optimized using intravascular imaging. Pressure-based measurements determine the significance of a stenosis using hyperemic or nonhyperemic pressure ratios (eg, the instantaneous wave-free ratio). Intravascular ultrasound and optical coherence tomography provide cross-sectional and longitudinal detail regarding plaque composition and vessel characteristics. These facilitate lesion preparation and optimization of stent sizing and positioning. This review explores the evidence-base and practical aspects of coregistering pressure gradient assessment and intravascular imaging with angiography. We then discuss gaps in the evidence and what is needed to help integrate these techniques into clinical practice.
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Affiliation(s)
- Tobin Joseph
- National Heart and Lung Institute, Imperial College London, Du Cane Road, London, W120HS, UK; Imperial College Healthcare NHS Trust, Du Cane Road, London, W120HS, UK
| | - Michael Foley
- National Heart and Lung Institute, Imperial College London, Du Cane Road, London, W120HS, UK; Imperial College Healthcare NHS Trust, Du Cane Road, London, W120HS, UK.
| | - Rasha Al-Lamee
- National Heart and Lung Institute, Imperial College London, Du Cane Road, London, W120HS, UK; Imperial College Healthcare NHS Trust, Du Cane Road, London, W120HS, UK; Hammersmith Hospital, Du Cane Road, London W12 0HS, UK
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Nijjer SS. Using Physiology Pullback for Percutaneous Coronary Intervention Guidance: Is this the Future? Interv Cardiol Clin 2023; 12:41-53. [PMID: 36372461 DOI: 10.1016/j.iccl.2022.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Modern coronary intervention requires integration of angiographic, physiologic, and intravascular imaging. This article describes the use and techniques needed to understand coronary physiology pullback data and how use it to make revascularization decisions. The article describes instantaneous wave-free ratio, fractional flow reserve, and the data that support their use and how they differ when used in tandem disease. Common practical mistakes and errors are discussed together with a brief review of the limited published research data.
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Affiliation(s)
- Sukhjinder Singh Nijjer
- Department of Cardiology, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0HS, United Kingdom. https://twitter.com/SukhNijjer
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10
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Fawaz S, Cook CM. Understanding the Basis for Hyperemic and Nonhyperemic Coronary Pressure Assessment. Interv Cardiol Clin 2023; 12:1-12. [PMID: 36372454 DOI: 10.1016/j.iccl.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Despite the now routine integration of invasive physiologic systems into coronary catheter laboratories worldwide, it remains critical that all operators maintain a sound understanding of the fundamental physiologic basis for coronary pressure assessment. More specifically, performing operators should be well informed regarding the basis for hyperemic (ie, fractional flow reserve) and nonhyperemic (ie, instantaneous wave-free ratio and other nonhyperemic pressure ratio) coronary pressure assessment. In this article, we provide readers a comprehensive history charting the inception, development, and validation of hyperemic and nonhyperemic coronary pressure assessment.
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Affiliation(s)
- Samer Fawaz
- Essex Cardiothoracic Centre, Mid and South Essex NHS Hospitals Trust, Basildon SS16 5NL, United Kingdom; Anglia Ruskin University, Chelmsford, Essex CM1 1SQ, United Kingdom
| | - Christopher M Cook
- Essex Cardiothoracic Centre, Mid and South Essex NHS Hospitals Trust, Basildon SS16 5NL, United Kingdom; Anglia Ruskin University, Chelmsford, Essex CM1 1SQ, United Kingdom.
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Di Serafino L, Barbato E, Serino F, Svanerud J, Scalamogna M, Cirillo P, Petitto M, Esposito M, Silvestri T, Franzone A, Piccolo R, Esposito G. Myocardial mass affects diagnostic performance of non-hyperemic pressure-derived indexes in the assessment of coronary stenosis. Int J Cardiol 2023; 370:84-89. [PMID: 36265648 DOI: 10.1016/j.ijcard.2022.10.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 09/09/2022] [Accepted: 10/12/2022] [Indexed: 11/05/2022]
Abstract
Background Several non-hyperemic pressure-derived Indexes (NHPI) have been introduced for the assessment of coronary stenosis, showing a good correlation with fractional flow reserve (FFR). Notably, either the assessment of NHPI during adenosine administration (NHPIADO) or the Hybrid Approach (NHPIHA), combining NHPI with FFR, have been showed to increase the accuracy of such indexes. It remains unclear whether diagnostic performance might be affected by the extent of the subtended myocardial mass. METHODS We enrolled consecutive patients with an intermediate coronary stenosis assessed with NHPI and FFR. NHPI were also measured during adenosine (ADO) administration (NHPIADO). The amount of jeopardized myocardium was assessed using the Duke Jeopardy Score (DJS). With FFR as reference, we assessed the accuracy of NHPI, NHPIADO and NHPIHA according to the extent of the subtended myocardium. RESULTS One-hundred-seventy stenoses from 151 patients were grouped according to the DJS as follows: A) Small Extent (SE, n = 82); B) Moderate Extent (ME, n = 53); C) Large Extent (LE, n = 35). As compared with FFR, NHPI showed a significantly different accuracy, as assessed by the Youden's index, according to the extent of the jeopardized myocardium (SE: 0.39 ± 0.05, ME: 0.68 ± 0.06, LE: 0.28 ± 0.06, p < 0.001). Conversely, both the NHPIADO (SE: 0.76 ± 0.02, ME: 0.88 ± 0.02, LE: 0.82 ± 0.02, p = 0.72) and NHPIHA (SE: 0.82 ± 0.07, ME: 0.84 ± 0.02, LE: 0.88 ± 0.02, p = 0.70) allowed for a better diagnostic accuracy regardless of the amount of myocardium subtended. CONCLUSIONS Diagnostic performance of NHPI might be affected by the extent of myocardial territory subtended by the coronary stenosis. A hybrid approach might be useful to overcome this limitation.
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Affiliation(s)
- Luigi Di Serafino
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy.
| | - Emanuele Barbato
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy; Cardiovascular Center Aalst, OLV Hospital, Aalst, Belgium
| | - Federica Serino
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | | | - Maria Scalamogna
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Plinio Cirillo
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Marta Petitto
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Mafalda Esposito
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Tania Silvestri
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Anna Franzone
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Raffaele Piccolo
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Giovanni Esposito
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
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12
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Nour D, Allahwala U, Hansen P, Figtree GA, Nelson G, Ward M, Bhindi R. Angiographic predictors of coronary hemodynamics. Future Cardiol 2022; 18:299-308. [PMID: 35189697 DOI: 10.2217/fca-2020-0090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aims: Assess the correlation between diameter stenosis, lesion length, location, diffuse coronary disease and with fractional flow reserve (FFR). Methods/Results: We performed quantitative coronary analysis analysis on 384 lesions with stable coronary artery disease undergoing FFR assessment. Vessels were 59.1% left anterior descending artery (LAD), 16.1% left circumflex artery and 14.8% right coronary artery. Median diameter stenosis was 58% ± 2.5 and median lesion length was 10 mm ± 7.36. 21% of vessels were diffusely diseased. Lesions were 33.6% proximal, 44% mid-vessel and 12% distal. Median FFR was 0.85. Diameter stenosis correlated with lower FFR (p < 0.005, odds ratio [OR]: 2.4 [95% CI: 0.99-5.63]). There was no association between lesion length, location, number of proximal side branches and FFR. Vessels with diffuse disease had a nonsignificant trend for lower FFR (0.84 vs 0.85, p = 0.375, OR: 1.26 [95% CI: 0.76-2.09]). LAD lesions had significantly lower FFR compared with non-LAD (p < 0.001, OR: 2.55 [95% CI: 1.61-4.04]); including left circumflex artery and right coronary artery lesions (p = 0.001, OR: 3.4 [95% CI: 1.7-6.9]) and p = 0.02, OR: 2.55 [95% CI: 1.17-4.34]). Conclusion: FFR is not related to lesion length, location or number of proximal branches.
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Affiliation(s)
- Daniel Nour
- Department of Cardiology, Royal North Shore Hospital, North Sydney, Sydney
| | - Usaid Allahwala
- Department of Cardiology, Royal North Shore Hospital, North Sydney, Sydney
| | - Peter Hansen
- Department of Cardiology, Royal North Shore Hospital, North Sydney, Sydney
| | - Gemma A Figtree
- Department of Cardiology, Royal North Shore Hospital, North Sydney, Sydney
| | - Gregory Nelson
- Department of Cardiology, Royal North Shore Hospital, North Sydney, Sydney
| | - Michael Ward
- Department of Cardiology, Royal North Shore Hospital, North Sydney, Sydney
| | - Ravinay Bhindi
- Department of Cardiology, Royal North Shore Hospital, North Sydney, Sydney
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Raposo L, Gonçalves M, Roque D, Gonçalves PA, Magno P, Brito J, Leal S, Madeira S, Santos M, Teles RC, E Abreu PF, Almeida M, Morais C, Mendes M, Baptista SB. Adoption and patterns of use of invasive physiological assessment of coronary artery disease in a large cohort of 40821 real-world procedures over a 12-year period. Rev Port Cardiol 2021; 40:771-781. [PMID: 34857116 DOI: 10.1016/j.repce.2021.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 01/17/2021] [Indexed: 01/09/2023] Open
Abstract
INTRODUCTION AND OBJECTIVES Use of invasive physiological assessment in patients with coronary artery disease varies widely and is perceived to be low. We aimed to examine adoption rates as well as patterns and determinants of use in an unselected population undergoing invasive coronary angiography over a long time frame. METHODS We retrospectively determined the per-procedure prevalence of physiological assessment in 40821 coronary cases performed between 2007 and 2018 in two large-volume centers. Adoption was examined according to procedure type and patient- and operator-related variables. Its association with relevant scientific landmarks, such as the release of clinical trial results and practice guidelines, was also assessed. RESULTS Overall adoption was low, ranging from 0.6% in patients undergoing invasive coronary angiography due to underlying valve disease, to 6% in the setting of stable coronary artery disease (CAD); it was 3.1% in patients sustaining an acute coronary syndrome. Of scientific landmarks, FAME 1, the long-term results of FAME 2 and the 2014 European myocardial revascularization guidelines were associated with changes in practice. Publication of instantaneous wave-free ratio (iFR) trials had no influence on adoption rates, except for a higher proportion of iFR use. In 42.9% of stable CAD patients undergoing percutaneous coronary intervention there was no objective non-invasive evidence of ischemia, nor was physiological assessment performed. Younger operator age (4.5% vs. 4.0% vs. 0.9% for ages <40, 40-55 and >55 years, respectively; p<0.001) and later time of procedure during the day (2.9% between 6 and 8 p.m. vs. 4.4% at other times) were independent correlates of use of invasive physiology. CONCLUSIONS Our study confirms the low use of invasive physiology in routine practice. The availability of resting indices did not increase adoption. Strategies are warranted to promote guideline implementation and to improve patient care and clinical outcomes.
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Affiliation(s)
- Luís Raposo
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal.
| | - Mariana Gonçalves
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - David Roque
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal
| | - Pedro Araújo Gonçalves
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal; NOVA Medical School, Lisbon, Portugal
| | - Pedro Magno
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal
| | - João Brito
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - Sílvio Leal
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - Sérgio Madeira
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - Miguel Santos
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal
| | - Rui Campante Teles
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - Pedro Farto E Abreu
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal
| | - Manuel Almeida
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal; NOVA Medical School, Lisbon, Portugal
| | - Carlos Morais
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal
| | - Miguel Mendes
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - Sérgio Bravo Baptista
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal; University Clinic of Cardiology, Faculty of Medicine at University of Lisbon, Lisboa, Portugal
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van Zandvoort LJC, Ali Z, Kern M, van Mieghem NM, Mintz GS, Daemen J. Improving PCI Outcomes Using Postprocedural Physiology and Intravascular Imaging. JACC Cardiovasc Interv 2021; 14:2415-30. [PMID: 34794649 DOI: 10.1016/j.jcin.2021.08.069] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [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.
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Ono M, Serruys PW, Patel MR, Escaned J, Akasaka T, Lavieren MAV, Haase C, Grass M, Kogame N, Hara H, Kawashima H, Wykrzykowska JJ, Piek JJ, Garg S, O'Leary N, Inderbitzen B, Onuma Y. A prospective multicenter validation study for a novel angiography-derived physiological assessment software: Rationale and design of the radiographic imaging validation and evaluation for Angio- iFR (ReVEAL iFR) study. Am Heart J 2021; 239:19-26. [PMID: 33992606 DOI: 10.1016/j.ahj.2021.05.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/05/2021] [Indexed: 01/15/2023]
Abstract
Angiography-derived physiological assessment of coronary lesions has emerged as an alternative to wire-based assessment aiming at less-invasiveness and shorter procedural time as well as cost effectiveness in physiology-guided decision making. However, current available image-derived physiology software have limitations including the requirement of multiple projections and are time consuming. METHODS/DESIGN: The ReVEAL iFR (Radiographic imaging Validation and EvALuation for Angio-iFR) trial is a multicenter, multicontinental, validation study which aims to validate the diagnostic accuracy of the Angio-iFR medical software device (Philips, San Diego, US) in patients undergoing angiography for Chronic Coronary Syndrome (CCS). The Angio-iFR will enable operators to predict both the iFR and FFR value within a few seconds from a single projection of cine angiography by using a lumped parameter fluid dynamics model. Approximately 440 patients with at least one de-novo 40% to 90% stenosis by visual angiographic assessment will be enrolled in the study. The primary endpoint is the sensitivity and specificity of the iFR and FFR for a given lesion compared to the corresponding invasive measures. The enrollment started in August 2019, and was completed in March 2021. SUMMARY: The Angio-iFR system has the potential of simplifying physiological evaluation of coronary stenosis compared with available systems, providing estimates of both FFR and iFR. The ReVEAL iFR study will investigate the predictive performance of the novel Angio-iFR software in CCS patients. Ultimately, based on its unique characteristics, the Angio-iFR system may contribute to improve adoption of functional coronary assessment and the workflow in the catheter laboratory.
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Raposo L, Gonçalves M, Roque D, Gonçalves PA, Magno P, Brito J, Leal S, Madeira S, Santos M, Teles RC, E Abreu PF, Almeida M, Morais C, Mendes M, Baptista SB. Adoption and patterns of use of invasive physiological assessment of coronary artery disease in a large cohort of 40821 real-world procedures over a 12-year period. Rev Port Cardiol 2021; 40:S0870-2551(21)00322-X. [PMID: 34474954 DOI: 10.1016/j.repc.2021.01.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 01/06/2021] [Accepted: 01/17/2021] [Indexed: 01/09/2023] Open
Abstract
INTRODUCTION AND OBJECTIVES Use of invasive physiological assessment in patients with coronary artery disease varies widely and is perceived to be low. We aimed to examine adoption rates as well as patterns and determinants of use in an unselected population undergoing invasive coronary angiography over a long time frame. METHODS We retrospectively determined the per-procedure prevalence of physiological assessment in 40821 coronary cases performed between 2007 and 2018 in two large-volume centers. Adoption was examined according to procedure type and patient- and operator-related variables. Its association with relevant scientific landmarks, such as the release of clinical trial results and practice guidelines, was also assessed. RESULTS Overall adoption was low, ranging from 0.6% in patients undergoing invasive coronary angiography due to underlying valve disease, to 6% in the setting of stable coronary artery disease (CAD); it was 3.1% in patients sustaining an acute coronary syndrome. Of scientific landmarks, FAME 1, the long-term results of FAME 2 and the 2014 European myocardial revascularization guidelines were associated with changes in practice. Publication of instantaneous wave-free ratio (iFR) trials had no influence on adoption rates, except for a higher proportion of iFR use. In 42.9% of stable CAD patients undergoing percutaneous coronary intervention there was no objective non-invasive evidence of ischemia, nor was physiological assessment performed. Younger operator age (4.5% vs. 4.0% vs. 0.9% for ages <40, 40-55 and >55 years, respectively; p<0.001) and later time of procedure during the day (2.9% between 6 and 8 p.m. vs. 4.4% at other times) were independent correlates of use of invasive physiology. CONCLUSIONS Our study confirms the low use of invasive physiology in routine practice. The availability of resting indices did not increase adoption. Strategies are warranted to promote guideline implementation and to improve patient care and clinical outcomes.
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Affiliation(s)
- Luís Raposo
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal.
| | - Mariana Gonçalves
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - David Roque
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal
| | - Pedro Araújo Gonçalves
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal; NOVA Medical School, Lisbon, Portugal
| | - Pedro Magno
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal
| | - João Brito
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - Sílvio Leal
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - Sérgio Madeira
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - Miguel Santos
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal
| | - Rui Campante Teles
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - Pedro Farto E Abreu
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal
| | - Manuel Almeida
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal; NOVA Medical School, Lisbon, Portugal
| | - Carlos Morais
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal
| | - Miguel Mendes
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Cardiology Department, Carnaxide, Portugal
| | - Sérgio Bravo Baptista
- Hospital Prof. Doutor Fernando da Fonseca, EPE, Cardiology Department, Amadora, Portugal; University Clinic of Cardiology, Faculty of Medicine at University of Lisbon, Lisboa, Portugal
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17
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Tahir H, Livesay J, Fogelson B, Baljepally R. Association of Echocardiographic Diastolic Dysfunction with Discordance of Invasive Intracoronary Pressure Indices. J Clin Med 2021; 10:3670. [PMID: 34441970 DOI: 10.3390/jcm10163670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 08/12/2021] [Indexed: 01/10/2023] Open
Abstract
Instantaneous wave-free ratio (iFR)-guided coronary revascularization has similar clinical outcomes compared to fractional flow reserve (FFR)-guided revascularization strategy. However, some studies have shown a discordance of around 20% between iFR and FFR. Although various factors have been reported in the literature to affect pressure indices and lead to such discordance, there is a paucity of data regarding the effect of diastolic dysfunction on functional assessment of coronary arteries. Our study aimed to investigate whether there was an association between echocardiographic left ventricular diastolic dysfunction and iFR/FFR discordance. This retrospective observational study evaluated 100 patients with angiographically intermediate coronary stenosis (50-70%) who underwent physiological testing with iFR and FFR. Transthoracic echocardiograms were reviewed to assess echocardiographic indices of diastolic function. The study population was divided into two groups based on diastolic function. iFR and FFR discordance was measured in each group and compared to evaluate the statistical difference. The mean age of the study population was 66.22 ± 10.02 years. Discordance between iFR and FFR was seen in 45.16% of patients with diastolic dysfunction compared to 24.64% of patients with normal diastolic function (p = 0.04). Multivariable logistic regression analysis indicated that echocardiographic E/e' was independently associated with iFR/FFR discordance (p = 0.02). Left ventricular diastolic dysfunction is a significant factor that can lead to discordance between iFR and FFR and should be taken into account during coronary physiological testing.
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18
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Tahir H, Livesay J, Fogelson B, Baljepally R. Effect of Elevated Left Ventricular End Diastolic Pressure on Instantaneous Wave-Free Ratio and Fractional Flow Reserve Discordance. Cardiol Res 2021; 12:117-125. [PMID: 33738015 PMCID: PMC7935642 DOI: 10.14740/cr1230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 02/09/2021] [Indexed: 01/22/2023] Open
Abstract
Background Instantaneous wave-free ratio (iFR)-guided physiological assessment has been shown to be non-inferior to fractional flow reserve (FFR)-guided assessment for deciding best treatment strategy for angiographically intermediate stenosis. The diagnostic accuracy of iFR compared to FFR reported in various studies is around 80%. Many factors can lead to iFR/FFR discordance, though underlying physiological mechanism of discordance and its associated factors have not been fully evaluated. The effect of left ventricle end diastolic pressure (LVEDP) on iFR/FFR discordance is unknown and needs further evaluation. Methods We performed a single center, non-randomized, both retrospective and prospective study. A total of 65 patients with intermediate coronary stenosis undergoing physiological assessment were included in the study. Patients were assigned to two groups (normal LVEDP and high LVEDP group) based on LVEDP cutoff of 15 mm Hg. iFR and FFR were measured for each patient and iFR/FFR results were compared between the two groups. Results A significantly large number of patients in elevated LVEDP group had iFR/FFR discordance compared to normal LVEDP group (42.8% vs. 6.7%, P = 0.001). More patients with acute coronary syndrome (ACS) had discordance compared to stale coronary artery disease (CAD) patients (53% vs. 15%, P = 0.003). Conclusions Elevated LVEDP can affect iFR and FFR measurements and can lead to discordance. Further studies are required to determine effect of elevated LVEDP on iFR/FFR discordance and whether such discordance is clinically relevant. “Normal range” iFR results should be cautiously interpreted in patients with elevated LVEDP, especially those with ACS.
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Affiliation(s)
- Hassan Tahir
- Department of Cardiology, Heart Lung Vascular Institute, University of Tennessee Medical Center, Knoxville, TN, USA
| | - James Livesay
- Department of Cardiology, Heart Lung Vascular Institute, University of Tennessee Medical Center, Knoxville, TN, USA
| | - Benjamin Fogelson
- Department of Cardiology, Heart Lung Vascular Institute, University of Tennessee Medical Center, Knoxville, TN, USA
| | - Raj Baljepally
- Department of Cardiology, Heart Lung Vascular Institute, University of Tennessee Medical Center, Knoxville, TN, USA
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Demir OM, Schrieken C, Curio J, Rahman H. Behavioural determinants impacting the adoption rate of coronary physiology. Int J Cardiol 2021; 330:12-14. [PMID: 33571564 DOI: 10.1016/j.ijcard.2021.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/22/2021] [Accepted: 02/03/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Despite international revascularisation guidelines strongly recommending functional assessment of coronary artery stenosis using pressure-wire derived indices, the adoption rate of coronary physiology remains low. METHODS An online questionnaire was designed to evaluate behavioural determinants impacting the adoption rate of coronary physiology. Factor analysis was performed to combine multiple items of a common behavioural domain into one explanatory factor. Regression analysis was performed to evaluate the influence of resulting factors on the variance of the coronary physiology adoption rate. Additionally, the influence of experience, demographics and provider structures was assessed. RESULTS 104 interventional cardiologists, from 21 countries, completed the questionnaire. Mean adoption rate of coronary physiology was 26.9%. Regression analysis revealed that factors ease-of-use (Coefficient = 0.58, p = 0.01), financial and/or time constraints (Coefficient = -0.22, p = 0.01) and knowledge about guideline recommendations (Coefficient = 0.21, p = 0.06) had the greatest influence on coronary physiology adoption rate variance (R2 = 0.3, p < 0.001), with ease-of-use and guideline recommendations positively influencing greater uptake and constraints influencing lesser uptake of adoption of coronary physiology. CONCLUSION Ease-of-use, financial and/or time constraints, and knowledge about guideline recommendations were the most relevant behavioural factors impacting the adoption rate of coronary physiology. Ease-of-use was identified as the most influential factor, highlighting the importance of cardiac catheterisation laboratory teams being adequately trained to perform coronary physiology assessment seamlessly.
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Affiliation(s)
- Ozan M Demir
- Department of Cardiology, St Thomas' Hospital, London, UK.
| | | | - Jonathan Curio
- Charité University Medical Care, Department of Cardiology, Campus Benjamin Franklin, Berlin, Germany
| | - Haseeb Rahman
- Department of Cardiology, St Thomas' Hospital, London, UK
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20
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Thim T, van der Hoeven NW, Musto C, Nijveldt R, Götberg M, Engstrøm T, Smits PC, Oldroyd KG, Gershlick AH, Escaned J, Baptista SB, Raposo L, van Royen N, Maeng M. Evaluation and Management of Nonculprit Lesions in STEMI. JACC Cardiovasc Interv 2020; 13:1145-1154. [PMID: 32438985 DOI: 10.1016/j.jcin.2020.02.030] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 02/18/2020] [Accepted: 02/25/2020] [Indexed: 02/08/2023]
Abstract
Nonculprit lesions are frequently observed in patients with ST-segment elevation myocardial infarction. Results from recent randomized clinical trials suggest that complete revascularization after ST-segment elevation myocardial infarction improves outcomes. In this state-of-the-art paper, the authors review these trials and consider how best to determine which nonculprit lesions require revascularization and when this should be performed.
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Affiliation(s)
- Troels Thim
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark.
| | | | - Carmine Musto
- Department of Interventional Cardiology, San Camillo Hospital, Rome, Italy
| | - Robin Nijveldt
- Department of Cardiology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Matthias Götberg
- Department of Cardiology, Clinical Sciences, Lund University, Skåne University Hospital, Lund, Sweden
| | - Thomas Engstrøm
- Department of Cardiology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Pieter C Smits
- Department of Cardiology, Maasstad Ziekenhuis, Rotterdam, the Netherlands
| | - Keith G Oldroyd
- Department of Cardiology, Golden Jubilee National Hospital, Glasgow, United Kingdom
| | - Anthony H Gershlick
- University of Leicester, University Hospitals of Leicester, Leicester Biomedical Research Unit, Leicester, United Kingdom
| | - Javier Escaned
- Hospital Clinico San Carlos IDISSC, Complutense University, Madrid, Spain
| | - Sergio Bravo Baptista
- University Clinic of Cardiology, Faculty of Medicine at University of Lisbon, Hospital Prof. Doutor Fernando Fonseca, Amadora, Portugal
| | - Luis Raposo
- Cardiology Department, Santa Cruz Hospital-CHLO, Lisbon, Portugal
| | - Niels van Royen
- Department of Cardiology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Michael Maeng
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
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21
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Zeitouni M, Kerneis M. Resting Coronary Physiology in Stable Coronary Artery Disease: Still Building Evidence. JACC Cardiovasc Interv 2020; 13:2699-701. [PMID: 33129817 DOI: 10.1016/j.jcin.2020.07.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 07/28/2020] [Indexed: 11/22/2022]
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Tajeddini F, Nikmaneshi MR, Firoozabadi B, Pakravan HA, Ahmadi Tafti SH, Afshin H. High precision invasive FFR, low-cost invasive iFR, or non-invasive CFR?: optimum assessment of coronary artery stenosis based on the patient-specific computational models. Int J Numer Method Biomed Eng 2020; 36:e3382. [PMID: 32621661 DOI: 10.1002/cnm.3382] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 05/15/2020] [Accepted: 06/28/2020] [Indexed: 06/11/2023]
Abstract
The objective of this paper is to apply computational fluid dynamic (CFD) as a complementary tool for clinical tests to not only predict the present and future status of left coronary artery stenosis but also to evaluate some clinical hypotheses. In order to assess the present status of the coronary artery stenosis severity, and thereby selecting the most appropriate type of treatment for each patient, fractional flow reserve (FFR), instantaneous wave free-ratio (iFR), and coronary flow reserve (CFR) are calculated. To examine FFR, iFR, and CFR results, the effect of geometric features of stenoses, including diameter reduction (%), lesion length (LL), and minimum lumen diameter (MLD), is studied on them. It is observed that FFR is a more conservative index than iFR and CFR to assess the severity of coronary stenosis. In addition, it is seen that FFR, iFR, and CFR decrease by increasing LL and decreasing MLD. Therefore, the morphological indices, LL/MLD and LL/MLD̂4, with the calculated conservative cut-off values equal to 5.5 and 3.6, are considered. Next, some controversial clinical hypotheses about the assessment of the severity of coronary stenosis are evaluated numerically. These include the examination of FFR, iFR, and CFR accuracies, investigating the effect of coronary hyperemia on iFR, as well as the reliability of the hybrid iFR-FFR decision-making strategy. The presented numerical model can also be used as a predictive tool to identify the atherosuseptible sites of arteries by calculating the time-averaged wall shear stress (TAWSS), oscillatory shear index (OSI), and relative residence time (RRT).
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Affiliation(s)
- Farshad Tajeddini
- Center of Excellence in Energy Conversion, School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
| | - Mohammad Reza Nikmaneshi
- Center of Excellence in Energy Conversion, School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
- Department of Radiation Oncology, Harvard Medical School, Boston, Massachusetts, USA
| | - Bahar Firoozabadi
- Center of Excellence in Energy Conversion, School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
| | | | | | - Hossein Afshin
- Center of Excellence in Energy Conversion, School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
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23
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Thim T, Götberg M, Fröbert O, Nijveldt R, van Royen N, Baptista SB, Koul S, Kellerth T, Bøtker HE, Terkelsen CJ, Christiansen EH, Jakobsen L, Kristensen SD, Maeng M. Agreement between nonculprit stenosis follow-up iFR and FFR after STEMI (iSTEMI substudy). BMC Res Notes 2020; 13:410. [PMID: 32873327 PMCID: PMC7466494 DOI: 10.1186/s13104-020-05252-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 08/21/2020] [Indexed: 11/20/2022] Open
Abstract
Objective To evaluate agreement between instantaneous wave free ratio (iFR) and fractional flow reserve (FFR) for the functional assessment of nonculprit coronary stenoses at staged follow-up after ST-segment elevation myocardial infarction (STEMI). Results We measured iFR and FFR at staged follow-up in 112 STEMI patients with 146 nonculprit stenoses. Median interval between STEMI and follow-up was 16 (interquartile range 5–32) days. Agreement between iFR and FFR was 77% < 5 days after STEMI and 86% after ≥ 5 days (p = 0.19). Among cases with disagreement, the proportion of cases with hemodynamically significant iFR and non-significant FFR were different when assessed < 5 days (5 in 8, 63%) versus ≥ 5 days (3 in 15, 20%) after STEMI (p = 0.04). Overall classification agreement between iFR and FFR was comparable to that observed in stable patients. Time interval between STEMI and follow-up evaluation may impact agreement between iFR and FFR.
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Affiliation(s)
- Troels Thim
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark.
| | - Matthias Götberg
- Department of Cardiology, Skåne University Hospital, Malmö, Sweden
| | - Ole Fröbert
- Department of Cardiology, Örebro University, Örebro, Sweden
| | - Robin Nijveldt
- Department of Cardiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Niels van Royen
- Department of Cardiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Sasha Koul
- Department of Cardiology, Skåne University Hospital, Malmö, Sweden
| | | | - Hans Erik Bøtker
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Christian Juhl Terkelsen
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Evald Høj Christiansen
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Lars Jakobsen
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Steen Dalby Kristensen
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Michael Maeng
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
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Cook CM, Warisawa T, Howard JP, Keeble TR, Iglesias JF, Schampaert E, Bhindi R, Ambrosia A, Matsuo H, Nishina H, Kikuta Y, Shiono Y, Nakayama M, Doi S, Takai M, Goto S, Yakuta Y, Karube K, Akashi YJ, Clesham GJ, Kelly PA, Davies JR, Karamasis GV, Kawase Y, Robinson NM, Sharp ASP, Escaned J, Davies JE. Algorithmic Versus Expert Human Interpretation of Instantaneous Wave-Free Ratio Coronary Pressure-Wire Pull Back Data. JACC Cardiovasc Interv 2020; 12:1315-1324. [PMID: 31320025 PMCID: PMC6645043 DOI: 10.1016/j.jcin.2019.05.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/15/2019] [Accepted: 05/21/2019] [Indexed: 11/03/2022]
Abstract
Objectives The aim of this study was to investigate whether algorithmic interpretation (AI) of instantaneous wave-free ratio (iFR) pressure-wire pull back data would be noninferior to expert human interpretation. Background Interpretation of iFR pressure-wire pull back data can be complex and is subjective. Methods Fifteen human experts interpreted 1,008 iFR pull back traces (691 unique, 317 duplicate). For each trace, experts determined the hemodynamic appropriateness for percutaneous coronary intervention (PCI) and, in such cases, the optimal physiological strategy for PCI. The heart team (HT) interpretation was determined by consensus of the individual expert opinions. The same 1,008 pull back traces were also interpreted algorithmically. The coprimary hypotheses of this study were that AI would be noninferior to the interpretation of the median expert human in determining: 1) the hemodynamic appropriateness for PCI; and 2) the physiological strategy for PCI. Results Regarding the hemodynamic appropriateness for PCI, the median expert human demonstrated 89.3% agreement with the HT in comparison with 89.4% for AI (p < 0.01 for noninferiority). Across the 372 cases judged as hemodynamically appropriate for PCI according to the HT, the median expert human demonstrated 88.8% agreement with the HT in comparison with 89.7% for AI (p < 0.0001 for noninferiority). On reproducibility testing, the HT opinion itself changed 1 in 10 times for both the appropriateness for PCI and the physiological PCI strategy. In contrast, AI showed no change. Conclusions AI of iFR pressure-wire pull back data was noninferior to expert human interpretation in determining both the hemodynamic appropriateness for PCI and the optimal physiological strategy for PCI.
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Affiliation(s)
- Christopher M Cook
- Hammersmith Hospital, Imperial College NHS Trust, London, United Kingdom
| | - Takayuki Warisawa
- Hammersmith Hospital, Imperial College NHS Trust, London, United Kingdom; St. Marianna University School of Medicine, Kawasaki, Japan
| | - James P Howard
- Hammersmith Hospital, Imperial College NHS Trust, London, United Kingdom
| | - Thomas R Keeble
- Essex Cardiothoracic Centre, Basildon, United Kingdom; Anglia Ruskin School of Medicine, Chelmsford, Essex, United Kingdom
| | | | - Erick Schampaert
- Hôpital Sacré-Coeur de Montréal, Université de Montréal, Montréal, Canada
| | | | | | | | | | | | | | | | - Shunichi Doi
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - Manabu Takai
- St. Marianna University School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan
| | - Sonoka Goto
- Toda Central General Hospital, Toda, Japan; Hospital Clinico San Carlos, Madrid, Spain
| | - Yohei Yakuta
- Kanazawa Cardiovascular Hospital, Kanazawa, Japan
| | | | | | - Gerald J Clesham
- Essex Cardiothoracic Centre, Basildon, United Kingdom; Anglia Ruskin School of Medicine, Chelmsford, Essex, United Kingdom
| | - Paul A Kelly
- Essex Cardiothoracic Centre, Basildon, United Kingdom
| | - John R Davies
- Essex Cardiothoracic Centre, Basildon, United Kingdom; Anglia Ruskin School of Medicine, Chelmsford, Essex, United Kingdom
| | - Grigoris V Karamasis
- Essex Cardiothoracic Centre, Basildon, United Kingdom; Anglia Ruskin School of Medicine, Chelmsford, Essex, United Kingdom
| | | | | | | | | | - Justin E Davies
- Hammersmith Hospital, Imperial College NHS Trust, London, United Kingdom.
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Li J, Song L, Zhang H. DFENet: Deep Feature Enhancement Network for Accurate Calculation of Instantaneous Wave-Free Ratio. IEEE J Transl Eng Health Med 2020; 8:1900611. [PMID: 32542119 PMCID: PMC7292482 DOI: 10.1109/jtehm.2020.2999725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/21/2020] [Accepted: 05/28/2020] [Indexed: 01/10/2023]
Abstract
Accurate iFR calculation can provide important clinical information for intracoronary functional assessment without administration of adenosine, which needs to locate object points in the pressure waveforms: peak, the dichrotic notch and the pressure nadir at the end of diastole. We propose a DFENet that is capable of locating object points to calculate iFR accurately. We first design a SFRA into DFENet with the idea of DenseNet. To avoid overfitting when dealing with sparse signals, we set appropriate number of network layers, growth rate of dense blocks and compression rate of transition blocks in 1D DenseNet. Then, we introduce a feature enhancement mechanism named 1D SE block for enhancing inconspicuous but vital features from SFRA, which guides DFENet to focus on these important features via feature recalibration. Finally, we prove an effective interaction mode between SFRA and 1D SE block to locate object points accurately. Adequate experiments demonstrate that DFENet reaches a high accuracy of 94.22%, error of 5.6 on object point localization of 1D pressure waveforms that include 1457 samples from 100 subjects via a cross-validation of Leave-One-Out. Comparison experiment demonstrates that the accuracy of DFENet exceeds other state-of-the-art methods by 3.35%, and ablation experiment demonstrates that the accuracy of SFRA and cSE exceed the other variations by 6.63% and 2.56% respectively. Importantly, we reveal how the DFENet enhance inconspicuous but vital feature by applying gradient-weighted class activation maps. DFENet can locate object points accurately, which is applicable to other signal processing tasks, especially in health sensing.
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Affiliation(s)
- Jiping Li
- School of Biomedical EngineeringSun Yat-sen UniversityGuangzhou510275China
| | - Liang Song
- Insight Lifetech Company Ltd.Shenzhen518052China
| | - Heye Zhang
- School of Biomedical EngineeringSun Yat-sen UniversityGuangzhou510275China
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Kovárník T, Kala P. „All-in-one“ concept of functional myocardial revascularization in the cathlab. Vnitr Lek 2020; 66:152-159. [PMID: 32972159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The concept of functional revascularization based on proving ischemia has been strongly recommended in the practical guidelines of both European and Czech Societies of Cardiology. In daily practice, application of this concept decreases the rate of coronary interventions. Though the best clinical evidence has been provided in patients with chronic coronary syndromes, recent data strongly advocate its usage also in patients with acute coronary syndromes. Invasive pressure-derived indices: hyperemic FFRmyo (fractional flow reserve of myocardium) and resting iFR (instantaneous wave-free ratio) require an interventional procedure by wiring the diseased vessel. FFRmyo 0.80 and iFR 0.89 mean functionally significant coronary disease mostly indicated for revascularization. Besides that, there are several non-invasive functional tests that may be used for detecting ischemia: perfusion scintigraphy, cardiovascular magnetic resonance, positron emission tomography and recently developed FFRCT or quantitative flow ratio (QFR). In routine practice, the concept of functional revascularization avoids unneccessary coronary interventions and, in case of functionally non-significant disease/stenoses, the patients may be treated conservatively with a very good prognosis. Currently, the „functionally complete revascularization“, instead of the anatomic one, might become the goal of our treatment as the all-in-one concept in the cathetrization laboratory.
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Hafiz AM, Perras M, Kakouros N. Acquired Coronary Fenestration. J Invasive Cardiol 2019; 31:E396. [PMID: 31786535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
OCT in a 74-year-old woman highlights how an angiographic coronary fenestration can be acquired through calcific nodule atherosclerosis in the coronary arteries. We demonstrate how tandem anatomic and physiologic assessment can be used to diagnose, functionally evaluate, and effectively treat this rare finding.
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Affiliation(s)
- Abdul Moiz Hafiz
- Division of Cardiology, Southern Illinois University School of Medicine, 701 North 1st Street, P.O. Box 19636, Springfield, IL 62794-9636 USA.
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Andell P, Berntorp K, Christiansen EH, Gudmundsdottir IJ, Sandhall L, Venetsanos D, Erlinge D, Fröbert O, Koul S, Reitan C, Götberg M. Reclassification of Treatment Strategy With Instantaneous Wave-Free Ratio and Fractional Flow Reserve: A Substudy From the iFR-SWEDEHEART Trial. JACC Cardiovasc Interv 2019; 11:2084-2094. [PMID: 30336812 DOI: 10.1016/j.jcin.2018.07.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/16/2018] [Accepted: 07/24/2018] [Indexed: 01/10/2023]
Abstract
OBJECTIVES The authors sought to compare reclassification of treatment strategy following instantaneous wave-free ratio (iFR) and fractional flow reserve (FFR). BACKGROUND iFR was noninferior to FFR in 2 large randomized controlled trials in guiding coronary revascularization. Reclassification of treatment strategy by FFR is well-studied, but similar reports on iFR are lacking. METHODS The iFR-SWEDEHEART (Instantaneous Wave-Free Ratio Versus Fractional Flow Reserve in Patients With Stable Angina Pectoris or Acute Coronary Syndrome Trial) study randomized 2,037 participants with stable angina or acute coronary syndrome to treatment guided by iFR or FFR. Interventionalists entered the preferred treatment (optimal medical therapy [OMT], percutaneous coronary intervention [PCI], or coronary artery bypass grafting [CABG]) on the basis of coronary angiograms, and the final treatment decision was mandated by the iFR/FFR measurements. RESULTS In the iFR/FFR (n = 1,009/n = 1,004) populations, angiogram-based treatment approaches were similar (p = 0.50) with respect to OMT (38%/35%), PCI of 1 (37%/39%), 2 (15%/16%), and 3 vessels (2%/2%) and CABG (8%/8%). iFR and FFR reclassified 40% and 41% of patients, respectively (p = 0.78). The majority of reclassifications were conversion of PCI to OMT in both the iFR/FFR groups (31.4%/29.0%). Reclassification increased with increasing number of lesions evaluated (odds ratio per evaluated lesion for FFR: 1.46 [95% confidence interval: 1.22 to 1.76] vs. iFR 1.37 [95% confidence interval: 1.18 to 1.59]). Reclassification rates for patients with 1, 2, and 3 assessed vessels were 36%, 52%, and 53% (p < 0.01). CONCLUSIONS Reclassification of treatment strategy of intermediate lesions was common and occurred in 40% of patients with iFR or FFR. The most frequent reclassification was conversion from PCI to OMT regardless of physiology modality. Irrespective of the physiological index reclassification of angiogram-based treatment strategy increased with the number of lesions evaluated.
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Affiliation(s)
- Pontus Andell
- Department of Cardiology, Clinical Sciences, Lund University, Skane University Hospital, Lund, Sweden.
| | - Karolina Berntorp
- Department of Cardiology, Clinical Sciences, Lund University, Skane University Hospital, Lund, Sweden
| | | | | | - Lennart Sandhall
- Departments of Cardiology and Radiology, Helsingborg Hospital, Helsingborg, Sweden
| | - Dimitrios Venetsanos
- Departments of Cardiology and of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - David Erlinge
- Department of Cardiology, Clinical Sciences, Lund University, Skane University Hospital, Lund, Sweden
| | - Ole Fröbert
- Department of Cardiology, Faculty of Health, Örebro University, Örebro, Sweden
| | - Sasha Koul
- Department of Cardiology, Clinical Sciences, Lund University, Skane University Hospital, Lund, Sweden
| | - Christian Reitan
- Department of Cardiology, Clinical Sciences, Lund University, Skane University Hospital, Lund, Sweden
| | - Matthias Götberg
- Department of Cardiology, Clinical Sciences, Lund University, Skane University Hospital, Lund, Sweden
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Escaned J, Ryan N, Mejía-Rentería H, Cook CM, Dehbi HM, Alegria-Barrero E, Alghamdi A, Al-Lamee R, Altman J, Ambrosia A, Baptista SB, Bertilsson M, Bhindi R, Birgander M, Bojara W, Brugaletta S, Buller C, Calais F, Silva PC, Carlsson J, Christiansen EH, Danielewicz M, Di Mario C, Doh JH, Erglis A, Erlinge D, Gerber RT, Going O, Gudmundsdottir I, Härle T, Hauer D, Hellig F, Indolfi C, Jakobsen L, Janssens L, Jensen J, Jeremias A, Kåregren A, Karlsson AC, Kharbanda RK, Khashaba A, Kikuta Y, Krackhardt F, Koo BK, Koul S, Laine M, Lehman SJ, Lindroos P, Malik IS, Maeng M, Matsuo H, Meuwissen M, Nam CW, Niccoli G, Nijjer SS, Olsson H, Olsson SE, Omerovic E, Panayi G, Petraco R, Piek JJ, Ribichini F, Samady H, Samuels B, Sandhall L, Sapontis J, Sen S, Seto AH, Sezer M, Sharp ASP, Shin ES, Singh J, Takashima H, Talwar S, Tanaka N, Tang K, Van Belle E, van Royen N, Varenhorst C, Vinhas H, Vrints CJ, Walters D, Yokoi H, Fröbert O, Patel MR, Serruys P, Davies JE, Götberg M. Safety of the Deferral of Coronary Revascularization on the Basis of Instantaneous Wave-Free Ratio and Fractional Flow Reserve Measurements in Stable Coronary Artery Disease and Acute Coronary Syndromes. JACC Cardiovasc Interv 2019; 11:1437-1449. [PMID: 30093050 DOI: 10.1016/j.jcin.2018.05.029] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/14/2018] [Accepted: 05/16/2018] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The aim of this study was to investigate the clinical outcomes of patients deferred from coronary revascularization on the basis of instantaneous wave-free ratio (iFR) or fractional flow reserve (FFR) measurements in stable angina pectoris (SAP) and acute coronary syndromes (ACS). BACKGROUND Assessment of coronary stenosis severity with pressure guidewires is recommended to determine the need for myocardial revascularization. METHODS The safety of deferral of coronary revascularization in the pooled per-protocol population (n = 4,486) of the DEFINE-FLAIR (Functional Lesion Assessment of Intermediate Stenosis to Guide Revascularisation) and iFR-SWEDEHEART (Instantaneous Wave-Free Ratio Versus Fractional Flow Reserve in Patients With Stable Angina Pectoris or Acute Coronary Syndrome) randomized clinical trials was investigated. Patients were stratified according to revascularization decision making on the basis of iFR or FFR and to clinical presentation (SAP or ACS). The primary endpoint was major adverse cardiac events (MACE), defined as the composite of all-cause death, nonfatal myocardial infarction, or unplanned revascularization at 1 year. RESULTS Coronary revascularization was deferred in 2,130 patients. Deferral was performed in 1,117 patients (50%) in the iFR group and 1,013 patients (45%) in the FFR group (p < 0.01). At 1 year, the MACE rate in the deferred population was similar between the iFR and FFR groups (4.12% vs. 4.05%; fully adjusted hazard ratio: 1.13; 95% confidence interval: 0.72 to 1.79; p = 0.60). A clinical presentation with ACS was associated with a higher MACE rate compared with SAP in deferred patients (5.91% vs. 3.64% in ACS and SAP, respectively; fully adjusted hazard ratio: 0.61 in favor of SAP; 95% confidence interval: 0.38 to 0.99; p = 0.04). CONCLUSIONS Overall, deferral of revascularization is equally safe with both iFR and FFR, with a low MACE rate of about 4%. Lesions were more frequently deferred when iFR was used to assess physiological significance. In deferred patients presenting with ACS, the event rate was significantly increased compared with SAP at 1 year.
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Affiliation(s)
- Javier Escaned
- Hospital Clínico San Carlos, IDISSC, and Universidad Complutense de Madrid, Madrid, Spain
| | - Nicola Ryan
- Hospital Clínico San Carlos, IDISSC, and Universidad Complutense de Madrid, Madrid, Spain
| | - Hernán Mejía-Rentería
- Hospital Clínico San Carlos, IDISSC, and Universidad Complutense de Madrid, Madrid, Spain
| | | | - Hakim-Moulay Dehbi
- CRUK & UCL Cancer Trials Centre, University College London, London, United Kingdom
| | | | - Ali Alghamdi
- King Abdulaziz Medical City Cardiac Center, Riyadh, Saudi Arabia
| | - Rasha Al-Lamee
- Hammersmith Hospital, Imperial College London, London, United Kingdom
| | - John Altman
- Colorado Heart and Vascular, Lakewood, Colorado
| | | | | | - Maria Bertilsson
- Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | | | - Mats Birgander
- Department of Cardiology, Clinical Sciences, Lund University, Skåne University Hospital, Lund, Sweden
| | - Waldemar Bojara
- Gemeinschaftsklinikum Mittelrhein, Kemperhof Koblenz, Koblenz, Germany
| | - Salvatore Brugaletta
- Cardiovascular Institute, Hospital Clinic, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | | | - Fredrik Calais
- Department of Cardiology, Faculty of Health, Örebro University, Örebro, Sweden
| | | | - Jörg Carlsson
- Kalmar County Hospital, and Linnaeus University, Faculty of Health and Life Sciences, Kalmar, Sweden
| | | | | | - Carlo Di Mario
- Royal Brompton Hospital, Imperial College London, United Kingdom, and University of Florence, Florence, Italy
| | - Joon-Hyung Doh
- Inje University Ilsan Paik Hospital, Daehwa-Dong, South Korea
| | - Andrejs Erglis
- Pauls Stradins Clinical University Hospital, Riga, Latvia
| | - David Erlinge
- Department of Cardiology, Clinical Sciences, Lund University, Skåne University Hospital, Lund, Sweden
| | | | - Olaf Going
- Sana Klinikum Lichtenberg, Lichtenberg, Germany
| | | | - Tobias Härle
- Klinikum Oldenburg, European Medical School, Carl von Ossietzky University, Oldenburg, Germany
| | - Dario Hauer
- Departments of Cardiology and Medical and Health Sciences, Linköping University, Linköping, Sweden
| | | | | | - Lars Jakobsen
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Jens Jensen
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, and Unit of Cardiology, Capio S:t Görans Sjukhus, Stockholm, and Department of Medicine, Sundsvall Hospital, Sundsvall, Sweden
| | - Allen Jeremias
- Stony Brook University Medical Center, Stony Brook, New York
| | - Amra Kåregren
- Department of Internal Medicine, Västmanland Hospital Västerås, Västerås, Sweden
| | | | - Rajesh K Kharbanda
- John Radcliffe Hospital, Oxford University Hospitals Foundation Trust, Oxford, United Kingdom
| | | | | | | | - Bon-Kwon Koo
- Seoul National University Hospital, Seoul, South Korea
| | - Sasha Koul
- Department of Cardiology, Clinical Sciences, Lund University, Skåne University Hospital, Lund, Sweden
| | - Mika Laine
- Helsinki University Hospital, Helsinki, Finland
| | | | - Pontus Lindroos
- Department of Cardiology, St. Göran Hospital, Stockholm, Sweden
| | - Iqbal S Malik
- Hammersmith Hospital, Imperial College London, London, United Kingdom
| | - Michael Maeng
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | | | | | - Chang-Wook Nam
- Keimyung University Dongsan Medical Center, Daegu, South Korea
| | | | | | - Hans Olsson
- Department of Cardiology, Karlstad Hospital, Karlstad, Sweden
| | - Sven-Erik Olsson
- Departments of Cardiology and Radiology, Helsingborg Hospital, Helsingborg, Sweden
| | - Elmir Omerovic
- Department of Cardiology, Sahlgrenska University Gothenburg, Sweden
| | - Georgios Panayi
- Departments of Cardiology and Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Ricardo Petraco
- Hammersmith Hospital, Imperial College London, London, United Kingdom
| | - Jan J Piek
- AMC Heart Center, Academic Medical Center, Amsterdam, the Netherlands
| | | | | | - Bruce Samuels
- Cedars-Sinai Heart Institute, Los Angeles, California
| | - Lennart Sandhall
- Departments of Cardiology and Radiology, Helsingborg Hospital, Helsingborg, Sweden
| | | | - Sayan Sen
- Hammersmith Hospital, Imperial College London, London, United Kingdom
| | - Arnold H Seto
- Veterans Affairs Long Beach Healthcare System, Long Beach, California
| | - Murat Sezer
- Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Andrew S P Sharp
- Royal Devon and Exeter Hospital and University of Exeter, Exeter, United Kingdom
| | - Eun-Seok Shin
- Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
| | - Jasvindar Singh
- Washington University School of Medicine, St. Louis, Missouri
| | | | - Suneel Talwar
- Royal Bournemouth General Hospital, Bournemouth, United Kingdom
| | | | - Kare Tang
- Essex Cardiothoracic Centre, Basildon and Anglia Ruskin University, Chelmsford, United Kingdom
| | - Eric Van Belle
- Institut Coeur Poumon, Lille University Hospital, and INSERM Unité 1011, Lille, France
| | | | | | | | | | | | | | - Ole Fröbert
- Department of Cardiology, Faculty of Health, Örebro University, Örebro, Sweden
| | | | - Patrick Serruys
- Department of Cardiology, Imperial College London, London, United Kingdom
| | - Justin E Davies
- Hammersmith Hospital, Imperial College London, London, United Kingdom.
| | - Matthias Götberg
- Department of Cardiology, Clinical Sciences, Lund University, Skåne University Hospital, Lund, Sweden
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Carson JM, Roobottom C, Alcock R, Nithiarasu P. Computational instantaneous wave-free ratio ( IFR) for patient-specific coronary artery stenoses using 1D network models. Int J Numer Method Biomed Eng 2019; 35:e3255. [PMID: 31469943 PMCID: PMC7003475 DOI: 10.1002/cnm.3255] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 07/22/2019] [Accepted: 08/21/2019] [Indexed: 05/05/2023]
Abstract
In this work, we estimate the diagnostic threshold of the instantaneous wave-free ratio (iFR) through the use of a one-dimensional haemodynamic framework. To this end, we first compared the computed fractional flow reserve (cFFR) predicted from a 1D computational framework with invasive clinical measurements. The framework shows excellent promise and utilises minimal patient data from a cohort of 52 patients with a total of 66 stenoses. The diagnostic accuracy of the cFFR model was 75.76%, with a sensitivity of 71.43%, a specificity of 77.78%, a positive predictive value of 60%, and a negative predictive value of 85.37%. The validated model was then used to estimate the diagnostic threshold of iFR. The model determined a quadratic relationship between cFFR and the ciFR. The iFR diagnostic threshold was determined to be 0.8910 from a receiver operating characteristic curve that is in the range of 0.89 to 0.9 that is normally reported in clinical studies.
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Affiliation(s)
- Jason M. Carson
- Zienkiewicz Centre for Computational Engineering, College of EngineeringSwansea UniversitySwanseaUK
- Data Science Building, Swansea University Medical SchoolSwansea UniversitySwanseaUK
- HDR UK Wales and Northern IrelandHealth Data Research UKLondonUK
| | - Carl Roobottom
- Derriford Hospital and Peninsula Medical SchoolPlymouth Hospitals NHS TrustPlymouthUK
| | - Robin Alcock
- Derriford Hospital and Peninsula Medical SchoolPlymouth Hospitals NHS TrustPlymouthUK
| | - Perumal Nithiarasu
- Zienkiewicz Centre for Computational Engineering, College of EngineeringSwansea UniversitySwanseaUK
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Van't Veer M, Pijls NHJ, Hennigan B, Watkins S, Ali ZA, De Bruyne B, Zimmermann FM, van Nunen LX, Barbato E, Berry C, Oldroyd KG. Comparison of Different Diastolic Resting Indexes to iFR: Are They All Equal? J Am Coll Cardiol 2019; 70:3088-3096. [PMID: 29268922 DOI: 10.1016/j.jacc.2017.10.066] [Citation(s) in RCA: 146] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/26/2017] [Accepted: 10/29/2017] [Indexed: 01/10/2023]
Abstract
BACKGROUND Pressure measurement for the duration of the wave-free period (WFP) is considered essential for resting-state physiological assessment of coronary stenosis severity using the instantaneous wave-free ratio (iFR). OBJECTIVES The aim of this study was to compare other diastolic resting indexes to iFR. METHODS In the population of the VERIFY2 (Pd/Pa vs iFR in an Unselected Population Referred for Invasive Angiography) study, iFR calculated by proprietary software (Volcano Harvest, Volcano Corporation, Rancho Cordova, California) was compared with the ratio of resting distal coronary pressure and aortic pressure during the complete duration of diastole (dPR), 25% to 75% of diastole (dPR25-75), and midpoint of diastole (dPRmid), along with Matlab calculated iFR (iFRmatlab) and iFR-like indexes shortening the length of the WFP by 50 and 100 ms (iFR-50ms and iFR-100ms), respectively. Mutual differences, Spearman correlations, area under the curve values from receiver-operating characteristic analyses, and diagnostic performance with respect to iFR and fractional flow reserve (FFR) were calculated for all indexes. RESULTS Median iFR in 197 patients with 257 vessels was 0.91 with an interquartile range of 0.87 to 0.95. The mutual differences (± SD) with iFR were 0.006 ± 0.011 (dPR), 0.001 ± 0.007 (dPR25-75), 0.001 ± 0.008 (dPRmid), 0.005 ± 0.009 (iFRmatlab), 0.003 ± 0.008 (iFR-50ms), and 0.001 ± 0.009 (iFR-100ms). Correlations for all indexes with iFR were >0.99 (p < 0.001 for all). Area under the curve values for predicting iFR were >0.99 for all indexes as well. Diagnostic accuracy compared with FFR was 76% to 77% for all indexes including iFR. CONCLUSIONS All diastolic resting indexes tested were identical to iFR, both numerically and with respect to their agreement with FFR. A numerically equal value to iFR can be determined without restriction to the WFP. Cutoff values, guidelines, and clinical recommendations for iFR can therefore be extended to these other indexes. (Pd/Pa vs iFR in an Unselected Population Referred for Invasive Angiography [VERIFY2]; NCT02377310).
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Affiliation(s)
- Marcel Van't Veer
- Department of Cardiology, Catharina Hospital Eindhoven, Eindhoven, the Netherlands; Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands.
| | - Nico H J Pijls
- Department of Cardiology, Catharina Hospital Eindhoven, Eindhoven, the Netherlands; Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Barry Hennigan
- British Heart Foundation, Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, Scotland, United Kingdom; West of Scotland Heart and Lung Center, Golden Jubilee National Hospital, Clydebank, Scotland, United Kingdom
| | - Stuart Watkins
- British Heart Foundation, Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, Scotland, United Kingdom; West of Scotland Heart and Lung Center, Golden Jubilee National Hospital, Clydebank, Scotland, United Kingdom
| | - Ziad A Ali
- Columbia University Medical Center, New York, New York
| | | | | | - Lokien X van Nunen
- Department of Cardiology, Catharina Hospital Eindhoven, Eindhoven, the Netherlands
| | - Emanuele Barbato
- Cardiovascular Center Aalst, Aalst, Belgium; Department of Advanced Biomedical Science, University of Naples, Naples, Italy
| | - Colin Berry
- British Heart Foundation, Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, Scotland, United Kingdom; West of Scotland Heart and Lung Center, Golden Jubilee National Hospital, Clydebank, Scotland, United Kingdom
| | - Keith G Oldroyd
- British Heart Foundation, Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, Scotland, United Kingdom; West of Scotland Heart and Lung Center, Golden Jubilee National Hospital, Clydebank, Scotland, United Kingdom
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Ahmad Y, Al-Lamee R, Davies J, Sen S. A case report of the clinical effect of chronic total occlusion recanalization on the instantaneous wave-free ratio in the donor artery. Eur Heart J Case Rep 2019; 2:1-4. [PMID: 31020109 PMCID: PMC6177112 DOI: 10.1093/ehjcr/yty014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 01/03/2018] [Indexed: 01/10/2023]
Abstract
Introduction Coronary physiology is recommended for guiding percutaneous coronary intervention (PCI). Previous cases have demonstrated changes in fractional flow reserve in a donor collateral vessel after PCI to a chronic total occlusion (CTO). The behaviour of instantaneous wave-free ratio (iFR) in the context of CTO has not been described. Case presentation In this case, we share the first case of the effect of CTO recanalization on iFR in the donor artery, and show how iFR can reflect the amount of myocardium subtended by a stenosis. Discussion Instantaneous wave-free ratio is able to incorporate the amount of subtended myocardium in its quantification of coronary stenosis severity.
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Affiliation(s)
- Yousif Ahmad
- Imperial College London, International Centre of Circulatory Health, National Heart and Lung Institute, The Hammersmith Hospital, Du Cane Road, London, UK
| | - Rasha Al-Lamee
- Imperial College London, International Centre of Circulatory Health, National Heart and Lung Institute, The Hammersmith Hospital, Du Cane Road, London, UK
| | - Justin Davies
- Imperial College London, International Centre of Circulatory Health, National Heart and Lung Institute, The Hammersmith Hospital, Du Cane Road, London, UK
| | - Sayan Sen
- Imperial College London, International Centre of Circulatory Health, National Heart and Lung Institute, The Hammersmith Hospital, Du Cane Road, London, UK
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Cook CM, Jeremias A, Petraco R, Sen S, Nijjer S, Shun-Shin MJ, Ahmad Y, de Waard G, van de Hoef T, Echavarria-Pinto M, van Lavieren M, Al Lamee R, Kikuta Y, Shiono Y, Buch A, Meuwissen M, Danad I, Knaapen P, Maehara A, Koo BK, Mintz GS, Escaned J, Stone GW, Francis DP, Mayet J, Piek JJ, van Royen N, Davies JE. Fractional Flow Reserve/Instantaneous Wave-Free Ratio Discordance in Angiographically Intermediate Coronary Stenoses: An Analysis Using Doppler-Derived Coronary Flow Measurements. JACC Cardiovasc Interv 2017; 10:2514-24. [PMID: 29268881 DOI: 10.1016/j.jcin.2017.09.021] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 09/15/2017] [Accepted: 09/19/2017] [Indexed: 01/10/2023]
Abstract
Objectives The study sought to determine the coronary flow characteristics of angiographically intermediate stenoses classified as discordant by fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR). Background Discordance between FFR and iFR occurs in up to 20% of cases. No comparisons have been reported between the coronary flow characteristics of FFR/iFR discordant and angiographically unobstructed vessels. Methods Baseline and hyperemic coronary flow velocity and coronary flow reserve (CFR) were compared across 5 vessel groups: FFR+/iFR+ (108 vessels, n = 91), FFR–/iFR+ (28 vessels, n = 24), FFR+/iFR– (22 vessels, n = 22), FFR–/iFR– (208 vessels, n = 154), and an unobstructed vessel group (201 vessels, n = 153), in a post hoc analysis of the largest combined pressure and Doppler flow velocity registry (IDEAL [Iberian-Dutch-English] collaborators study). Results FFR disagreed with iFR in 14% (50 of 366). Baseline flow velocity was similar across all 5 vessel groups, including the unobstructed vessel group (p = 0.34 for variance). In FFR+/iFR– discordants, hyperemic flow velocity and CFR were similar to both FFR–/iFR– and unobstructed groups; 37.6 (interquartile range [IQR]: 26.1 to 50.4) cm/s vs. 40.0 [IQR: 29.7 to 52.3] cm/s and 42.2 [IQR: 33.8 to 53.2] cm/s and CFR 2.36 [IQR: 1.93 to 2.81] vs. 2.41 [IQR: 1.84 to 2.94] and 2.50 [IQR: 2.11 to 3.17], respectively (p > 0.05 for all). In FFR–/iFR+ discordants, hyperemic flow velocity, and CFR were similar to the FFR+/iFR+ group; 28.2 (IQR: 20.5 to 39.7) cm/s versus 23.5 (IQR: 16.4 to 34.9) cm/s and CFR 1.44 (IQR: 1.29 to 1.85) versus 1.39 (IQR: 1.06 to 1.88), respectively (p > 0.05 for all). Conclusions FFR/iFR disagreement was explained by differences in hyperemic coronary flow velocity. Furthermore, coronary stenoses classified as FFR+/iFR– demonstrated similar coronary flow characteristics to angiographically unobstructed vessels.
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Abstract
Instantaneous wave-free ratio (iFR) is a vasodilator-free index of coronary blood flow used for revascularization decision-making. iFR-based revascularization also had a decreased rate of adverse effects from vasodilators, shorter procedure times, and lower revascularization rates. iFR-pullback predicts post-percutaneous coronary intervention physiologic outcomes in tandem and diffuse coronary lesions. iFR may be particularly useful in patients with potential adenosine resistance, contraindications to adenosine, and multivessel or serial lesions. iFR is a useful tool both with and without fractional-flow reserve for revascularization planning.
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Affiliation(s)
- Masood Younus
- Department of Medicine, University of California, 101 The City Drive South, Orange, CA 92868, USA
| | - Arnold H Seto
- Department of Medicine, University of California, 101 The City Drive South, Orange, CA 92868, USA; Department of Medicine, Veterans Administration Long Beach Health Care System, 5901 East 7th Street, 111C, Long Beach, CA 90822, USA.
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de Waard GA, van Royen N. Coronary Physiology in the Nonculprit Vessel After Acute Myocardial Infarction: To Go With the Flow or Unexpected Resistance? JACC Cardiovasc Interv 2018; 11:1859-1861. [PMID: 30236359 DOI: 10.1016/j.jcin.2018.07.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 07/24/2018] [Indexed: 10/28/2022]
Affiliation(s)
- Guus A de Waard
- Department of Cardiology, Amsterdam Cardiovascular Sciences, VU University Medical Center, Amsterdam, the Netherlands.
| | - Niels van Royen
- Department of Cardiology, Amsterdam Cardiovascular Sciences, VU University Medical Center, Amsterdam, the Netherlands; Department of Cardiology, Radboud University Medical Center, Nijmegen, the Netherlands
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Kern MJ, Seto AH. Newsflash, PCI Works: Stenting Stenoses Increases Coronary Blood Flow During Exercise and Reduces Ischemia. J Am Coll Cardiol 2018; 72:984-986. [PMID: 30139443 DOI: 10.1016/j.jacc.2018.06.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 06/20/2018] [Accepted: 06/25/2018] [Indexed: 01/10/2023]
Affiliation(s)
- Morton J Kern
- School of Medicine, University of California, Irvine, Orange, California; Veterans Administration Long Beach Health Care System, Long Beach, California.
| | - Arnold H Seto
- Veterans Administration Long Beach Health Care System, Long Beach, California; Department of Cardiology, Veterans Administration Long Beach Health Care System, Long Beach, California
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Tebaldi M, Biscaglia S, Campo G. Low FFR equal to low ischemia: Really? Int J Cardiol 2018; 265:81. [PMID: 29885704 DOI: 10.1016/j.ijcard.2017.12.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 12/23/2017] [Indexed: 11/23/2022]
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Pisters R, Ilhan M, Veenstra LF, Gho BCG, Stein M, Hoorntje JCA, Rasoul S. Instantaneous wave-free ratio and fractional flow reserve in clinical practice. Neth Heart J 2018; 26:385-92. [PMID: 29923057 DOI: 10.1007/s12471-018-1125-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Objectives To compare fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) measurements in an all-comer patient population with moderate coronary artery stenoses. Background Visual assessment of the severity of coronary artery stenoses is often discordant in moderate lesions. FFR allows reliable functional severity assessment in these cases but requires adenosine-induced hyperaemia with associated additional time, costs and side effects. The iFR is a hyperaemia-independent index. Methods and results Between November 2015 and February 2017, 356 consecutive patients were included in whom 515 coronary stenoses were measured using both iFR and FFR. Mean iFR and FFR were 0.90 ± 0.09 and 0.86 ± 0.08, respectively. iFR correlated well with FFR [r = 0.75; p < 0.001]. Receiver operating characteristic analysis identified an area under the curve of 0.92. An iFR-only strategy with a treatment cut-off ≤0.89 revealed a diagnostic classification agreement with the FFR-only strategy in 420 lesions (82%) with a sensitivity of 87%, a specificity of 80%, a positive predictive value of 56% and a negative predictive value of 96%. Conclusions Real-time iFR measurements have good negative predictive value compared to FFR, but moderate diagnostic accuracy (82%). It exposes fewer patients to adenosine, reduces procedure time and costs. Further prospective trials are needed to evaluate specific clinical settings, cut-off values and endpoints.
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Gupta A. "What is the impact of utilizing so-called best practices in percutaneous coronary intervention?": an interview with Atul Gupta. Future Cardiol 2018; 14:121-123. [PMID: 29359966 DOI: 10.2217/fca-2018-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Atul Gupta, MD speaks to Adam Price-Evans, Managing Commissioning Editor of Future Cardiology. Atul Gupta is the Global Chief Medical Officer for the business group Image Guided Therapy at Philips, providing medical guidance to Philips' clinical vision and strategy. As a practicing interventional and diagnostic radiologist, he also serves as a key external clinical voice for Image Guided Therapy. His key responsibilities include supporting innovation and product development in cardiology, peripheral vascular, surgical, oncology interventions, clinical education, office-based labs, medical affairs and new business development and ventures. He went to medical school and completed his postgraduate training in diagnostic radiology and a fellowship in interventional radiology. He maintains a clinical practice, performing interventional and diagnostic radiology in both hospital and office-based lab settings.
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Affiliation(s)
- Atul Gupta
- Royal Philips, Amstelplein 2, 1096 BC Amsterdam, The Netherlands
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Härle T, Luz M, Meyer S, Vahldiek F, van der Harst P, van Dijk R, Ties D, Escaned J, Davies J, Elsässer A. Influence of hydrostatic pressure on intracoronary indices of stenosis severity in vivo. Clin Res Cardiol 2017; 107:222-232. [PMID: 29098379 DOI: 10.1007/s00392-017-1174-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 10/26/2017] [Indexed: 01/10/2023]
Abstract
BACKGROUND An influence of hydrostatic pressure on intracoronary indices of stenosis severity in vitro was recently reported. We sought to analyze the influence of hydrostatic pressure, caused by the height difference between the distal and proximal pressure sensor after guidewire positioning in the interrogated vessel, on intracoronary pressure measurements in vivo. METHODS AND RESULTS In 30 coronary stenoses, intracoronary pressure measurements were performed in supine, left, and right lateral patient position. Height differences between the distal and proximal pressure sensor were measured by blinded observers. Measurement results of the position with the highest ("high") and lowest height difference ("low") were compared. In group "high", all measured indices were higher: mean difference of fractional flow reserve (FFR) 0.045 (SD 0.033, 95% CI 0.033-0.057, p < 0.0001), of instantaneous wave-free ratio (iFR) 0.043 (SD 0.04, 95% CI 0.029-0.057, p < 0.0001), and of resting Pd/Pa 0.037 (SD 0.034, 95% CI 0.025-0.049, p < 0.0001). Addition of the physically expectable hydrostatic pressure to the distal coronary pressures of the control group abolished the differences: corrected ∆FFR - 0.006 (SD 0.027, 95% CI - 0.015 to 0.004, p = 0.26), corrected ∆Pd/Pa - 0.008 (SD 0.03, 95% CI - 0.019 to 0.003, p = 0.18). Adjustment for hydrostatic pressure of FFR values in a standard supine position increased all values in anterior vessels and decreased all values in posterior vessels. The mean changes of FFR due to adjustment were: LAD - 0.048 (SD 0.016), CX 0.02 (SD 0.009), RCA 0.02 (SD 0.021). Dichotomous severity classification changed in 12.9% of stenoses. CONCLUSIONS The study demonstrates a relevant influence of hydrostatic pressure on intracoronary indices of stenosis severity in vivo, caused by the height differences between distal and proximal pressure sensor.
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Affiliation(s)
- Tobias Härle
- Department of Cardiology, Klinikum Oldenburg, European Medical School Oldenburg-Groningen, Carl von Ossietzky University Oldenburg, Rahel-Straus-Str. 10, 26133, Oldenburg, Germany.
| | - Mareike Luz
- Department of Cardiology, Klinikum Oldenburg, European Medical School Oldenburg-Groningen, Carl von Ossietzky University Oldenburg, Rahel-Straus-Str. 10, 26133, Oldenburg, Germany
| | - Sven Meyer
- Department of Cardiology, Klinikum Oldenburg, European Medical School Oldenburg-Groningen, Carl von Ossietzky University Oldenburg, Rahel-Straus-Str. 10, 26133, Oldenburg, Germany
| | - Felix Vahldiek
- Department of Cardiology, Klinikum Oldenburg, European Medical School Oldenburg-Groningen, Carl von Ossietzky University Oldenburg, Rahel-Straus-Str. 10, 26133, Oldenburg, Germany
| | - Pim van der Harst
- Center for Medical Imaging, Groningen, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Randy van Dijk
- Center for Medical Imaging, Groningen, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Daan Ties
- Center for Medical Imaging, Groningen, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Javier Escaned
- Department of Cardiology, Hospital Clinico San Carlos, Madrid, Spain
| | - Justin Davies
- Hammersmith Hospital, Imperial College London, London, UK
| | - Albrecht Elsässer
- Department of Cardiology, Klinikum Oldenburg, European Medical School Oldenburg-Groningen, Carl von Ossietzky University Oldenburg, Rahel-Straus-Str. 10, 26133, Oldenburg, Germany
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Picard F, Pighi M, Ly HQ. Fractional flow reserve and resting indices for coronary physiologic assessment: Practical guide, tips, and tricks. Catheter Cardiovasc Interv 2017; 90:598-611. [PMID: 28160376 DOI: 10.1002/ccd.26933] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 11/19/2016] [Accepted: 12/22/2016] [Indexed: 01/10/2023]
Abstract
Physiologic assessment using fractional flow reserve (FFR) to guide percutaneous coronary interventions (PCI) has been demonstrated to improve clinical outcomes, compared to angiography-guided PCI. Recently, resting indices such as resting Pd/Pa, "instantaneous wave-free ratio", and contrast medium induced FFR have been evaluated for the assessment of the functional consequences of coronary lesions. Herein, we review and discuss the use of FFR and other indices for the functional assessment of coronary lesions. This review will cover theoretical aspects, as well as practical points and common pitfalls related to coronary physiological assessment. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Fabien Picard
- Interventional Cardiology Division, Department of Medicine, Montreal Heart Institute, Université de Montréal, Montréal, Qubec, Canada
| | - Michele Pighi
- Interventional Cardiology Division, Department of Medicine, Montreal Heart Institute, Université de Montréal, Montréal, Qubec, Canada
| | - Hung Q Ly
- Interventional Cardiology Division, Department of Medicine, Montreal Heart Institute, Université de Montréal, Montréal, Qubec, Canada
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Picard F, Tadros VX, Pighi M, Spagnoli V, De Hemptinne Q, Ly HQ. [Fractional flow reserve and instantaneous wave-free ratio for the physiological assessment of coronary artery stenosis in the catheterization laboratory: Practical tips]. Ann Cardiol Angeiol (Paris) 2016; 66:32-41. [PMID: 27211352 DOI: 10.1016/j.ancard.2016.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 03/15/2016] [Indexed: 01/14/2023]
Abstract
In recent years, a large body of evidence has revealed the limitations of angiographic evaluation in determining the physiological significance of coronary stenosis, particularly when these are intermediate lesions. Percutaneous coronary interventions (PCI) guided by physiological assessment using fractional flow reserve (FFR) have been shown to reduce cardiovascular events when compared to angiography alone. Recently, another coronary physiologic parameter has been introduced: the "instantaneous wave-free ratio" (iFR). In this review, we will discuss the FFR, the iFR, and their use in the functional assessment of coronary stenosis in the cardiac catheterization laboratory. This review will cover theoretical aspects for non-interventional cardiologists, as well as practice points and common pitfalls related to coronary physiological assessment for interventional cardiologists.
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Affiliation(s)
- F Picard
- Interventional Cardiology Division, Department of Medicine, Montreal Heart Institute, université de Montréal, Montréal, QC, Canada
| | - V X Tadros
- Interventional Cardiology Division, Department of Medicine, Montreal Heart Institute, université de Montréal, Montréal, QC, Canada
| | - M Pighi
- Interventional Cardiology Division, Department of Medicine, Montreal Heart Institute, université de Montréal, Montréal, QC, Canada
| | - V Spagnoli
- Interventional Cardiology Division, Department of Medicine, Montreal Heart Institute, université de Montréal, Montréal, QC, Canada
| | - Q De Hemptinne
- Interventional Cardiology Division, Department of Medicine, Montreal Heart Institute, université de Montréal, Montréal, QC, Canada
| | - H Q Ly
- Interventional Cardiology Division, Department of Medicine, Montreal Heart Institute, université de Montréal, Montréal, QC, Canada.
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Sen S, Petraco R, Nijjer S, Mayet J, Davies J. Can Resting Indices Obviate the Need for Hyperemia and Promote the Routine Use of Physiologically Guided Revascularization? Interv Cardiol Clin 2015; 4:459-69. [PMID: 28581932 DOI: 10.1016/j.iccl.2015.06.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
This article assesses the data from contemporary human studies to address some of the common assumptions regarding hyperemic and baseline physiology in the context of the baseline pressure-derived index of instant wave-free ratio and the hyperemic index of fractional flow reserve. The article aims to determine if the available evidence supports the continued investigation, development, and use of baseline indices.
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Abstract
BACKGROUND Measurement of fractional flow reserve (FFR) has become a standard diagnostic tool in the catheterization laboratory. FFR evaluation studies were based on pressure recordings during steady-state maximum hyperemia. Commercially available computer systems detect the lowest Pd/Pa ratio automatically, which might not always be measured during steady-state hyperemia. We sought to compare the automatically detected FFR and true steady-state FFR. METHODS AND RESULTS Pressure measurement traces of 105 coronary lesions from 77 patients with intermediate coronary lesions or multivessel disease were reviewed. In all patients, hyperemia had been achieved by intravenous adenosine administration using a dosage of 140 µg/kg/min. In 42 lesions (40%) automatically detected FFR was lower than true steady-state FFR. Mean bias was 0.009 (standard deviation 0.015, limits of agreement -0.02, 0.037). In 4 lesions (3.8%) both methods lead to different treatment recommendations, in all 4 cases instantaneous wave-free ratio confirmed steady-state FFR. CONCLUSIONS Automatically detected FFR was slightly lower than steady-state FFR in more than one-third of cases. Consequently, interpretation of automatically detected FFR values closely below the cutoff value requires special attention.
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Affiliation(s)
- Tobias Härle
- Klinik für Kardiologie, Klinikum Oldenburg gGmbH, European Medical School Oldenburg-Groningen, Carl von Ossietzky Universität Oldenburg, Rahel-Straus-Str. 10, 26133, Oldenburg, Germany.
| | - Sven Meyer
- Klinik für Kardiologie, Klinikum Oldenburg gGmbH, European Medical School Oldenburg-Groningen, Carl von Ossietzky Universität Oldenburg, Rahel-Straus-Str. 10, 26133, Oldenburg, Germany
| | - Felix Vahldiek
- Klinik für Kardiologie, Klinikum Oldenburg gGmbH, European Medical School Oldenburg-Groningen, Carl von Ossietzky Universität Oldenburg, Rahel-Straus-Str. 10, 26133, Oldenburg, Germany
| | - Albrecht Elsässer
- Klinik für Kardiologie, Klinikum Oldenburg gGmbH, European Medical School Oldenburg-Groningen, Carl von Ossietzky Universität Oldenburg, Rahel-Straus-Str. 10, 26133, Oldenburg, Germany
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Park JJ, Petraco R, Nam CW, Doh JH, Davies J, Escaned J, Koo BK. Clinical validation of the resting pressure parameters in the assessment of functionally significant coronary stenosis; results of an independent, blinded comparison with fractional flow reserve. Int J Cardiol 2013; 168:4070-5. [PMID: 23890849 DOI: 10.1016/j.ijcard.2013.07.030] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 06/27/2013] [Accepted: 07/02/2013] [Indexed: 02/06/2023]
Abstract
BACKGROUND The role of resting pressure parameters, i.e. instantaneous wave-free ratio (iFR), and resting distal coronary pressure/aortic pressure (Pd/Pa) in assessing functionally significant stenosis remains controversial. We sought to assess the diagnostic performance of iFR and resting whole-cycle Pd/Pa in Asian patients. METHODS In this study, 238 consecutive lesions (no total occlusions) in which fractional flow reserve (FFR) was measured with both intravenous and intracoronary adenosine administration were included. Coded resting pressure data were sent to the core laboratory in which iFR was calculated in a blinded fashion. RESULTS FFR and iFR had unimodal distributions and the correlation was r = 0.77 (95% confidence interval, 0.71 to 0.82). In a receiver-operating-characteristic curve analysis, iFR had an area under the curve (AUC) of 0.9 at FFR ≤ 0.80. The best cut-off value for iFR was 0.90 with a sensitivity, specificity, positive and negative predictive values, and diagnostic accuracy of 76%, 86%, 82% and 80%, and 82%, respectively. The resting whole-cycle Pd/Pa cut-off of 0.91 demonstrated a diagnostic accuracy of 82% (AUC 0.9). However, iFR had higher discriminatory power than the resting whole-cycle Pd/Pa. CONCLUSION Both iFR and resting whole-cycle Pd/Pa showed good diagnostic performance to define the functionally significant stenosis in an independent Asian cohort distributed unimodally and without total occlusions. However, further validation is needed to explore the areas of disagreement between different physiologic parameters prior to adoption of resting pressure parameters into routine clinical practice.
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Affiliation(s)
- Jin Joo Park
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Republic of Korea; Cardiovascular Center, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
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