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Molina-Lopez VH, Ortiz-Mendiguren D, Diaz-Rodriguez PE, Ortiz-Troche S, Cordova-Perez F, Ortiz-Cartagena I. Unusual Presentation of De Winter's Sign Due to Bezold-Jarisch Reflex in a Patient With Severe Aortic Valve Stenosis. Cureus 2024; 16:e61563. [PMID: 38962646 PMCID: PMC11220733 DOI: 10.7759/cureus.61563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2024] [Indexed: 07/05/2024] Open
Abstract
The de Winter electrocardiogram (ECG) pattern, marked by upsloping ST depression in leads V2-V6, ST elevation in lead aVR, and tall symmetric T waves, typically indicates left anterior descending artery (LAD) occlusion. Traditionally linked to LAD occlusion, it is rare in severe aortic stenosis and the Bezold-Jarisch reflex (BJR). We report an 83-year-old man with severe aortic stenosis who developed hypotension due to bleeding and exhibited the de Winter ECG pattern. This case highlights how severe aortic stenosis and BJR can lead to significant hemodynamic instability and ischemic ECG changes, resolving after hemodynamic stabilization.
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Affiliation(s)
- Victor H Molina-Lopez
- Cardiovascular Medicine, Veterans Affairs Caribbean Healthcare System, San Juan, PRI
| | | | | | | | | | - Ismael Ortiz-Cartagena
- Interventional Cardiology, Veterans Affairs Caribbean Healthcare System, San Juan, PRI
- Interventional Cardiology, Pavia Santurce Hospital, San Juan, PRI
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2
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Minten L, Bennett J, Otsuki H, Takahashi K, Fearon WF, Dubois C. Differential Effect of Aortic Valve Replacement for Severe Aortic Stenosis on Hyperemic and Resting Epicardial Coronary Pressure Indices. J Am Heart Assoc 2024; 13:e034401. [PMID: 38761080 PMCID: PMC11179829 DOI: 10.1161/jaha.124.034401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 04/23/2024] [Indexed: 05/20/2024]
Abstract
BACKGROUND Coronary pressure indices to assess coronary artery disease are currently underused in patients with aortic stenosis due to many potential physiological effects that might hinder their interpretation. Studies with varying sample sizes have provided us with conflicting results on the effect of transcatheter aortic valve replacement (TAVR) on these indices. The aim of this meta-analysis was to study immediate and long-term effects of TAVR on fractional flow reserve (FFR) and nonhyperemic pressure ratios (NHPRs). METHODS AND RESULTS Lesion-specific coronary pressure data were extracted from 6 studies, resulting in 147 lesions for immediate change in FFR analysis and 105 for NHPR analysis. To investigate the long-term changes, 93 lesions for FFR analysis and 68 for NHPR analysis were found. Lesion data were pooled and compared with paired t tests. Immediately after TAVR, FFR decreased significantly (-0.0130±0.0406 SD, P: 0.0002) while NHPR remained stable (0.0003±0.0675, P: 0.9675). Long-term after TAVR, FFR decreased significantly (-0.0230±0.0747, P: 0.0038) while NHPR increased nonsignificantly (0.0166±0.0699, P: 0.0543). When only borderline NHPR lesions were considered, this increase became significant (0.0249±0.0441, P: 0.0015). Sensitivity analysis confirmed our results in borderline lesions. CONCLUSIONS TAVR resulted in small significant, but opposite, changes in FFR and NHPR. Using the standard cut-offs in patients with severe aortic stenosis, FFR might underestimate the physiological significance of a coronary lesion while NHPRs might overestimate its significance. The described changes only play a clinically relevant role in borderline lesions. Therefore, even in patients with aortic stenosis, an overtly positive or negative physiological assessment can be trusted.
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Affiliation(s)
- Lennert Minten
- Department of Cardiovascular Sciences Katholieke Universiteit Leuven Leuven Belgium
- Division of Cardiovascular Medicine Stanford University Palo Alto CA
| | - Johan Bennett
- Department of Cardiovascular Sciences Katholieke Universiteit Leuven Leuven Belgium
- Department of Cardiovascular Medicine University Hospitals Leuven (UZ Leuven) Leuven Belgium
| | - Hisao Otsuki
- Division of Cardiovascular Medicine Stanford University Palo Alto CA
| | - Kuniaki Takahashi
- Division of Cardiovascular Medicine Stanford University Palo Alto CA
| | - William F Fearon
- Division of Cardiovascular Medicine Stanford University Palo Alto CA
| | - Christophe Dubois
- Department of Cardiovascular Sciences Katholieke Universiteit Leuven Leuven Belgium
- Department of Cardiovascular Medicine University Hospitals Leuven (UZ Leuven) Leuven Belgium
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3
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Jo HH, Kang DY, Lee JM, Lim SM, Park YS, Choi Y, Kim H, Lee J, Ahn JM, Park DW, Park SJ. Evaluation of Instantaneous Wave-Free Ratio and Fractional Flow Reserve in Severe Aortic Valve Stenosis. Circ Cardiovasc Interv 2024; 17:e013237. [PMID: 38629298 DOI: 10.1161/circinterventions.123.013237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 02/08/2024] [Indexed: 04/30/2024]
Abstract
BACKGROUND The optimal functional evaluation of coronary artery stenosis in patients with severe aortic stenosis (AS) has not been established. The objective of the study was to evaluate the instantaneous wave-free ratio (iFR) and fractional flow reserve (FFR) in patients with and without severe AS. METHODS We retrospectively investigated 395 lesions in 293 patients with severe AS and 2257 lesions in 1882 patients without severe AS between 2010 and 2022 from a subgroup of the Interventional Cardiology Research In-Cooperation Society FFR Registry. All patients had FFR values, and iFR was analyzed post hoc using dedicated software only in lesions with adequate resting pressure curves (311 lesions in patients with severe AS and 2257 lesions in patients with nonsevere AS). RESULTS The incidence of iFR ≤0.89 was 66.6% and 31.8% (P<0.001), while the incidence of FFR ≤0.80 was 45.3% and 43.9% (P=0.60) in the severe AS group and the nonsevere AS group, respectively. In the severe AS group, most lesions (95.2%) with iFR >0.89 had FFR >0.80, while 36.2% of lesions with iFR ≤0.89 had FFR >0.80. During a median follow-up of 2 years, FFR ≤0.80 was significantly associated with deferred lesion failure (adjusted hazard ratio, 2.71 [95% CI, 1.08-6.80]; P=0.034), while iFR ≤0.89 showed no prognostic value (adjusted hazard ratio, 1.31 [95% CI, 0.47-3.60]; P=0.60) in the severe AS group. Lesions with iFR ≤0.89 and FFR >0.80, in particular, were not associated with a higher rate of deferred lesion failure at 3 years compared with lesions with iFR >0.89 (15.4% versus 17.0%; P=0.58). CONCLUSIONS This study suggested that FFR appears to be less affected by the presence of severe AS and is more associated with prognosis. iFR may overestimate the functional severity of coronary artery disease without prognostic significance, yet it can be useful for excluding significant stenosis in patients with severe AS.
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Affiliation(s)
- Ha Hye Jo
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Do-Yoon Kang
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Joong Min Lee
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - So-Min Lim
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Young-Sun Park
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Yeonwoo Choi
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Hoyun Kim
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jinho Lee
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jung-Min Ahn
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Duk-Woo Park
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Seung-Jung Park
- Division of Cardiology, Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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Ribichini F, Pesarini G, Fabris T, Lunardi M, Barbierato M, D'Amico G, Zanchettin C, Gregori D, Piva T, Nicolini E, Gandolfo C, Fineschi M, Petronio AS, Berti S, Caprioglio F, Saia F, Sclafani R, Esposito G, D'Ascenzo F, Tarantini G. A randomised multicentre study of angiography- versus physiologyguided percutaneous coronary intervention in patients with coronary artery disease undergoing TAVI: design and rationale of the FAITAVI trial. EUROINTERVENTION 2024; 20:e504-e510. [PMID: 38629420 PMCID: PMC11017223 DOI: 10.4244/eij-d-23-00679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 01/16/2024] [Indexed: 04/19/2024]
Abstract
The treatment of coronary artery disease (CAD) in patients with severe aortic valve stenosis (AVS) eligible for transcatheter aortic valve implantation (TAVI) is not supported by clinical evidence, and the role of physiology over anatomy as well as the timing of coronary intervention are not defined. FAITAVI (ClinicalTrials.gov: NCT03360591) is a nationwide prospective, open-label, multicentre, randomised controlled study comparing the angiography-guided versus the physiology-guided coronary revascularisation strategy in patients with combined significant CAD and severe AVS undergoing TAVI. Significant CAD will be defined as coronary stenosis ≥50%, as assessed by visual estimation in vessels ≥2.5 mm. Physiology will be tested by fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR). The study will be conducted at 15 sites in Italy. In the angiography arm, percutaneous coronary intervention (PCI) will be performed either before TAVI, during the TAVI procedure - before or after the valve implantation - or within 1 month±5 days of the valve implantation, left to the operator's decision. In the physiology arm, FFR and iFR will be performed before TAVI, and PCI will be indicated for FFR ≤0.80, otherwise the intervention will be deferred. In case of borderline values (0.81-0.85), FFR and iFR will be repeated after TAVI, with PCI performed when needed. With a sample size of 320 patients, the study is powered to evaluate the primary endpoint (a composite of death, myocardial infarction, stroke, major bleeding, or ischaemia-driven target vessel revascularisation). TAVI indication, strategy and medical treatment will be the same in both groups. After discharge, patients will be contacted at 1, 6, 12 and 24 months after the procedure to assess their general clinical status, and at 12 months for the occurrence of events included in the primary and secondary endpoints. FAITAVI is the first randomised clinical trial to investigate "optimal" percutaneous coronary intervention associated with TAVI in patients with severe AVS and CAD.
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Affiliation(s)
- Flavio Ribichini
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Gabriele Pesarini
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Tommaso Fabris
- Department of Cardiac, Thoracic and Vascular Science, University of Padova, Padova, Italy
| | - Mattia Lunardi
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Marco Barbierato
- Division of Cardiology, Ospedale dell'Angelo di Mestre, Chirignago-Zelarino, Italy
| | - Gianpiero D'Amico
- Division of Cardiology, Ospedale dell'Angelo di Mestre, Chirignago-Zelarino, Italy
| | - Chiara Zanchettin
- Department of Cardiac, Thoracic and Vascular Science, University of Padova, Padova, Italy
- Division of Cardiology, Ospedale dell'Angelo di Mestre, Chirignago-Zelarino, Italy
| | - Dario Gregori
- Department of Cardiac, Thoracic and Vascular Science, University of Padova, Padova, Italy
| | - Tommaso Piva
- Division of Cardiology, Azienda Ospedaliero Universitaria delle Marche, Ancona, Italy
| | - Elisa Nicolini
- Division of Cardiology, Azienda Ospedaliero Universitaria delle Marche, Ancona, Italy
| | | | - Massimo Fineschi
- Division of Cardiology, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - Anna Sonia Petronio
- Division of Cardiology, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | - Sergio Berti
- Division of Cardiology, Ospedale del Cuore - Fondazione Monasterio, Massa, Italy
| | | | - Francesco Saia
- Division of Cardiology, Policlinico S. Orsola-Malpighi, Bologna, Italy
| | - Rocco Sclafani
- Division of Cardiology, Azienda Ospedaliera di Perugia - Ospedale S. Maria della Misericordia, Perugia, Italy
| | - Giovanni Esposito
- Division of Cardiology, Policlinico Universitario Federico II di Napoli, Napoli, Italy
| | - Fabrizio D'Ascenzo
- Division of Cardiology, Department of Medical Sciences, Città della Salute e della Scienza, Hospital University of Turin, Torino, Italy
| | - Giuseppe Tarantini
- Department of Cardiac, Thoracic and Vascular Science, University of Padova, Padova, Italy
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5
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Scarsini R, Portolan L, Della Mora F, Fabroni M, Andreaggi S, Mainardi A, Springhetti P, Dotto A, Del Sole PA, Fezzi S, Pazzi S, Tavella D, Mammone C, Lunardi M, Pesarini G, Benfari G, Ribichini FL. Coronary microvascular dysfunction in patients undergoing transcatheter aortic valve implantation. Heart 2024; 110:603-612. [PMID: 38040448 DOI: 10.1136/heartjnl-2023-323461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 11/09/2023] [Indexed: 12/03/2023] Open
Abstract
OBJECTIVES This study aimed to evaluate the prognostic value of coronary microvascular dysfunction (CMD) at long term after transcatheter aortic valve implantation (TAVI) and to explore its relationship with extravalvular cardiac damage (EVCD). Moreover, we sought to test the correlation between angiography-derived index of microcirculatory resistance (IMRangio) and invasive IMR in patients with aortic stenosis (AS). METHODS This was a retrospective analysis of the Verona Valvular Heart Disease Registry (Italy) including 250 patients (83 (80-86) years, 53% female) with severe AS who underwent TAVI between 2019 and 2021. IMRangio was calculated offline using a computational flow model applied to coronary angiography obtained during the TAVI workup. CMD was defined as IMRangio ≥30 units.The primary endpoint was the composite of cardiovascular death and rehospitalisation for heart failure (HF). Advanced EVCD was defined as pulmonary circulation impairment, severe tricuspid regurgitation or right ventricular dysfunction.The correlation between IMR and IMRangio was prospectively assessed in 31 patients undergoing TAVI. RESULTS The primary endpoint occurred in 28 (11.2%) patients at a median follow-up of 22 (IQR 12-30) months. Patients with CMD met the primary endpoint more frequently than those without CMD (22.9% vs 2.8%, p<0.0001). Patients with CMD were more frequently characterised by advanced EVCD (33 (31.4%) vs 27 (18.6%), p=0.024). CMD was an independent predictor of adverse outcomes (adjusted HR 6.672 (2.251 to 19.778), p=0.001) and provided incremental prognostic value compared with conventional clinical and imaging variables. IMRangio demonstrated fair correlation with IMR. CONCLUSIONS CMD is an independent predictor of cardiovascular mortality and HF after TAVI.
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Affiliation(s)
- Roberto Scarsini
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
- Interventional Cardiology Unit, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Leonardo Portolan
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Francesco Della Mora
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Margherita Fabroni
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Stefano Andreaggi
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Andrea Mainardi
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Paolo Springhetti
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Alberto Dotto
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | | | - Simone Fezzi
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Sara Pazzi
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Domenico Tavella
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
- Interventional Cardiology Unit, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Concetta Mammone
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
- Interventional Cardiology Unit, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Mattia Lunardi
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
- Interventional Cardiology Unit, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Gabriele Pesarini
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
- Interventional Cardiology Unit, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Giovanni Benfari
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
| | - Flavio Luciano Ribichini
- Department of Medicine, Division of Cardiology, University of Verona, Verona, Italy
- Interventional Cardiology Unit, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
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6
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Gutiérrez-Barrios A, Cañadas-Pruaño D, Alfaro LM, Gheorghe L, Silva E, Noval-Morillas I, Pino CCC, Rueda RZ, Calle-Pérez G, Vázquez-García R, Toro-Cebada R. Coronary Flow Reserve and Myocardial Resistance Reserve Changes After Transcatheter Aortic Valve Implantation in Aortic Stenosis. Am J Cardiol 2024; 214:109-114. [PMID: 38232809 DOI: 10.1016/j.amjcard.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/09/2023] [Accepted: 01/01/2024] [Indexed: 01/19/2024]
Abstract
Aortic valve stenosis (AS) induces an alteration in hemodynamic conditions that are responsible for coronary microvasculature impairment. Relief of AS by transcatheter aortic valve implantation (TAVI) is expected to improve the coronary artery hemodynamic. We aimed to assess the midterm effects of TAVI in coronary flow reserve (CFR) and myocardial resistance reserve (MRR) by a continuous intracoronary thermodilution technique. At-rest and hyperemic coronary flow was measured by a continuous thermodilution technique in 23 patients with AS and compared with that in 17 matched controls, and repeated 6 ± 3 months after TAVI in 11 of the patients with AS. In patients with AS, absolute coronary flow at rest was significantly greater, and absolute resistance at rest was significantly less, than in controls (p <0.01 for both), causing less CFR and MRR (1.73 ± 0.4 vs 2.85 ± 1.1, p <0.01 and 1.95 ± 0.4 vs 3.22 ± 1.4, p <0.01, respectively). TAVI implantation yielded a significant 35% increase in CFR (p >0.01) and a 39% increase in MRR (p <0.01) driven by absolute coronary flow at rest reduction (p = 0.03). In patients with AS, CFR and MRR determined by continuous thermodilution are significantly impaired. At 6-month follow-up, TAVI improves these indexes and partially relieves the pathophysiologic alterations, leading to a partial restoration of CFR and MRR.
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Affiliation(s)
- Alejandro Gutiérrez-Barrios
- Cardiology Department, Hospital Puerta del Mar, Cádiz, Spain; Instituto de Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), University of Cadiz, Cadiz, Spain.
| | - Dolores Cañadas-Pruaño
- Cardiology Department, Hospital Puerta del Mar, Cádiz, Spain; Instituto de Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), University of Cadiz, Cadiz, Spain
| | | | - Livia Gheorghe
- Cardiology Department, Hospital Puerta del Mar, Cádiz, Spain; Instituto de Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), University of Cadiz, Cadiz, Spain
| | - Etelvino Silva
- Instituto de Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), University of Cadiz, Cadiz, Spain
| | - Inmaculada Noval-Morillas
- Cardiology Department, Hospital Puerta del Mar, Cádiz, Spain; Instituto de Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), University of Cadiz, Cadiz, Spain
| | | | - Ricardo Zayas Rueda
- Cardiology Department, Hospital Puerta del Mar, Cádiz, Spain; Instituto de Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), University of Cadiz, Cadiz, Spain
| | - Germán Calle-Pérez
- Cardiology Department, Hospital Puerta del Mar, Cádiz, Spain; Instituto de Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), University of Cadiz, Cadiz, Spain
| | - Rafael Vázquez-García
- Cardiology Department, Hospital Puerta del Mar, Cádiz, Spain; Instituto de Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), University of Cadiz, Cadiz, Spain
| | - Rocio Toro-Cebada
- Instituto de Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), University of Cadiz, Cadiz, Spain
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7
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Tehrani DM, Seto AH. Is Coronary Physiology Assessment Valid in Special Circumstances?: Aortic Stenosis, Atrial Fibrillation, Left Ventricular Hypertrophy, and Other. Cardiol Clin 2024; 42:21-29. [PMID: 37949537 DOI: 10.1016/j.ccl.2023.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Fractional flow reserve (FFR) and nonhyperemic pressure ratios (NHPRs) provide an important clinical tool to evaluate the hemodynamic significance of coronary lesions. However, these indices have major limitations. As these indices are meant to be surrogates of coronary flow, clinical scenarios such as aortic stenosis (with increased end-systolic and end-diastolic pressures) or atrial fibrillation (with significant beat-to-beat cardiac output variability) can have significant effect on the accuracy and reliability of these hemodynamic indices. Here, we provide a comprehensive evaluation of the pitfalls, limitations, and strengths of FFR and NHPRs in common clinical scenarios paired with coronary artery disease.
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Affiliation(s)
- David M Tehrani
- Ronald Reagan UCLA Medical Center, 650 Charles East Young Drive South, CHS A2-237, Los Angeles, CA 90095-1679, USA.
| | - Arnold H Seto
- Long Beach Veterans Administration Medical Center, 5901 East 7th Street, 111C, Long Beach, CA 90822, USA. https://twitter.com/arnoldseto
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8
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Mohammed AA, Zhang H, Li S, Liu L, Mareai RM, Xu Y, Abdu FA, Che W. Prognostic value of coronary microvascular dysfunction in patients with aortic stenosis and nonobstructed coronary arteries. J Cardiovasc Med (Hagerstown) 2023; 24:891-899. [PMID: 37942790 DOI: 10.2459/jcm.0000000000001561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
BACKGROUND Patients with aortic valve stenosis have been postulated to have coronary microvascular dysfunction (CMD) contributing to the clinical symptoms and adverse outcomes. The coronary angiography (CAG)-derived index of microcirculatory resistance (caIMR) is proposed as a novel, less invasive and pressure-wire-free index to assess CMD. This study aimed to quantify CMD assessed by caIMR and investigate its prognostic impact in patients with aortic valve stenosis. METHODS This study included 77 moderate or severe aortic valve stenosis patients with no obstructive coronary disease (defined as having no stenosis more than 50% in diameter) who underwent caIMR measurement. CMD was defined by caIMR at least 25. Major adverse cardiovascular events (MACE) were the clinical outcomes during the median 40 months of follow-up. RESULTS The incidence of CMD was 47.7%. Seventeen MACE occurred during the follow-up duration. CMD was associated with an increased risk of MACE (log-rank P < 0.001) and an independent predictor of clinical outcomes [hazard ratio 5.467, 95% confidence interval (CI) 1.393-21.458; P = 0.015]. The receiver-operating characteristic (ROC) curve analysis demonstrated that caIMR could provide a significant predictive value for MACE in aortic valve stenosis patients (AUC 0.785, 95% CI 0.609-0.961, P < 0.001). In addition, the risk of MACE was higher in CMD patients with severe aortic valve stenosis (log-rank P < 0.001) and no aortic valve replacement (log-rank P = 0.003) than in other groups. CONCLUSION Aortic valve stenosis patients demonstrated markedly impaired caIMR. CMD assessed by caIMR increases the risk of MACE and is an independent predictor of adverse outcomes in aortic valve stenosis patients. This finding suggests that using caIMR in the clinical assessment may help identify high-risk groups and stimulate earlier intervention.
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Affiliation(s)
- Ayman A Mohammed
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine; Shanghai, China
- Department of Internal Medicine, Faculty of Medicine and Health Science, Taiz University, Yemen
| | - Hengbin Zhang
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine; Shanghai, China
| | - Siqi Li
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine; Shanghai, China
| | - Lu Liu
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine; Shanghai, China
| | - Redhwan M Mareai
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine; Shanghai, China
| | - Yawei Xu
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine; Shanghai, China
| | - Fuad A Abdu
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine; Shanghai, China
| | - Wenliang Che
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine; Shanghai, China
- Department of Cardiology, Shanghai Tenth People's Hospital Chongming Branch, Shanghai, China
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9
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Koo BK, Hwang D, Park S, Kuramitsu S, Yonetsu T, Kim CH, Zhang J, Yang S, Doh JH, Jeong YH, Choi KH, Lee JM, Ahn JM, Matsuo H, Shin ES, Hu X, Low AF, Kubo T, Nam CW, Yong AS, Harding SA, Xu B, Hur SH, Choo GH, Tan HC, Mullasari A, Hsieh IC, Kakuta T, Akasaka T, Wang J, Tahk SJ, Fearon WF, Escaned J, Park SJ. Practical Application of Coronary Physiologic Assessment: Asia-Pacific Expert Consensus Document: Part 2. JACC. ASIA 2023; 3:825-842. [PMID: 38155788 PMCID: PMC10751650 DOI: 10.1016/j.jacasi.2023.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 07/08/2023] [Indexed: 12/30/2023]
Abstract
Coronary physiologic assessment is performed to measure coronary pressure, flow, and resistance or their surrogates to enable the selection of appropriate management strategy and its optimization for patients with coronary artery disease. The value of physiologic assessment is supported by a large body of clinical data that has led to major recommendations in all practice guidelines. This expert consensus document aims to convey practical and balanced recommendations and future perspectives for coronary physiologic assessment for physicians and patients in the Asia-Pacific region, based on updated information in the field that includes both wire- and image-based physiologic assessment. This is Part 2 of the whole consensus document, which provides theoretical and practical information on physiologic indexes for specific clinical conditions and patient statuses.
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Affiliation(s)
- Bon-Kwon Koo
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Doyeon Hwang
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Sungjoon Park
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Shoichi Kuramitsu
- Department of Cardiovascular Medicine, Sapporo Heart Center, Sapporo Cardio Vascular Clinic, Sapporo, Japan
| | - Taishi Yonetsu
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Chee Hae Kim
- Department of Internal Medicine and Cardiovascular Center, Dongguk University Ilsan Hospital, Goyang, Korea
| | - Jinlong Zhang
- Department of Cardiology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Seokhun Yang
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Joon-Hyung Doh
- Department of Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
| | - Young-Hoon Jeong
- CAU Thrombosis and Biomarker Center, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong, Korea and Department of Internal Medicine, Chung-Ang University School of Medicine, Seoul, Korea
| | - Ki Hong Choi
- Division of Cardiology, Department of Internal Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joo Myung Lee
- Division of Cardiology, Department of Internal Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jung-Min Ahn
- Division of Cardiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hitoshi Matsuo
- Department of Cardiovascular Medicine, Gifu Heart Center, Japan
| | - Eun-Seok Shin
- Department of Cardiology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Xinyang Hu
- Department of Cardiology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Adrian F. Low
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore; National University Heart Centre, National University Health System, Singapore
| | - Takashi Kubo
- Department of Cardiology, Tokyo Medical University, Hachioji Medical Center, Tokyo, Japan
| | - Chang-Wook Nam
- Department of Internal Medicine and Cardiovascular Research Institute, Keimyung University Dongsan Hospital, Daegu, Korea
| | - Andy S.C. Yong
- Department of Cardiology, Concord Hospital, University of Sydney, Sydney, Australia
| | - Scott A. Harding
- Department of Cardiology, Wellington Hospital, Wellington, New Zealand
| | - Bo Xu
- Department of Cardiology, National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Seung-Ho Hur
- Department of Internal Medicine and Cardiovascular Research Institute, Keimyung University Dongsan Hospital, Daegu, Korea
| | - Gim Hooi Choo
- Department of Cardiology, Cardiac Vascular Sentral KL (CVSKL), Kuala Lumpur, Malaysia
| | - Huay Cheem Tan
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore; National University Heart Centre, National University Health System, Singapore
| | - Ajit Mullasari
- Department of Cardiology, Madras Medical Mission, Chennai, India
| | - I-Chang Hsieh
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou and Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Tsunekazu Kakuta
- Division of Cardiovascular Medicine, Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - Takashi Akasaka
- Department of Cardiovascular Medicine, Wakayama Medical University, Wakayama, Japan
| | - Jian'an Wang
- Department of Cardiology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Seung-Jea Tahk
- Department of Cardiology, Ajou University Medical Center, Suwon, Korea
| | - William F. Fearon
- Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, Palo Alto, California, USA
| | - Javier Escaned
- Hospital Clinico San Carlos IDISSC, Complutense University of Madrid, Madrid, Spain
| | - Seung-Jung Park
- Division of Cardiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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10
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Seguchi M, Aytekin A, Steiger L, Nicol P, Pellegrini C, Rheude T, Engel LC, Alvarez-Covarrubias HA, Xhepa E, Mayr NP, Hadamitzky M, Kastrati A, Schunkert H, Joner M, Lenz T. Near-infrared spectroscopy-intravascular ultrasound to improve assessment of coronary artery disease severity in patients referred for transcatheter aortic valve implantation (The IMPACTavi registry): Design and rationale. Am Heart J 2023; 264:114-122. [PMID: 37315878 DOI: 10.1016/j.ahj.2023.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 05/29/2023] [Accepted: 06/08/2023] [Indexed: 06/16/2023]
Abstract
BACKGROUND Transcatheter aortic valve implantation (TAVI) was established as a standard treatment for high-operative risk patients with severe aortic stenosis (AS). Although coronary artery disease (CAD) often coexists with AS, clinical and angiographic evaluations of stenosis severity are unreliable in this specific setting. To provide precise risk stratification of coronary lesions, combined near-infrared spectroscopy and intravascular ultrasound (NIRS-IVUS) was developed to integrate morphological and molecular information on plaque composition. However, there is a lack of evidence on the association between NIRS-IVUS derived findings such as maximum 4mm lipid core burden index (maxLCBI4mm) and clinical outcomes in AS patients undergoing TAVI. This registry aims to assess feasibility and safety of NIRS-IVUS imaging in the setting of routine pre-TAVI coronary angiography to improve assessment of CAD severity. METHODS The registry is designed as a non-randomized, prospective, observational, multicenter cohort registry. Patients referred for TAVI with angiographic evidence of CAD receive NIRS-IVUS imaging and are followed up to 24 months. Enrolled patients are classified as NIRS-IVUS positive and NIRS-IVUS negative, respectively, based on their maxLCBI4mm to compare their clinical outcomes. The primary endpoint of the registry is major adverse cardiovascular events over a 24-month follow-up period. CONCLUSIONS Identification of patients likely or unlikely to benefit from revascularization prior to TAVI represents an important unmet clinical need. This registry is designed to investigate whether NIRS-IVUS-derived atherosclerotic plaque characteristics can identify patients and lesions at risk for future adverse cardiovascular events after TAVI, in order to refine interventional decision-making in this challenging patient population.
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Affiliation(s)
- Masaru Seguchi
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany; Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan.
| | - Alp Aytekin
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
| | - Lena Steiger
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
| | - Philipp Nicol
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
| | - Costanza Pellegrini
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
| | - Tobias Rheude
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
| | - Leif-Christopher Engel
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
| | - Hector A Alvarez-Covarrubias
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany; Catheter laboratory, Hospital de Cardiología, Centro Médico Nacional Siglo XXI, IMMS, Ciudad de México, México
| | - Erion Xhepa
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
| | - N Patrick Mayr
- Department of Anaesthesiology, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
| | - Martin Hadamitzky
- Department of Radiology and Nuclear Medicine, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
| | - Adnan Kastrati
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany; Deutsches Zentrum für Herz- und Kreislauf-Forschung (DZHK) e.V. (German Center for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Heribert Schunkert
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany; Deutsches Zentrum für Herz- und Kreislauf-Forschung (DZHK) e.V. (German Center for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Michael Joner
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany; Deutsches Zentrum für Herz- und Kreislauf-Forschung (DZHK) e.V. (German Center for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Tobias Lenz
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technical University Munich, Munich, Germany
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11
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Weferling M, Kim WK. Invasive Functional Assessment of Coronary Artery Disease in Patients with Severe Aortic Stenosis in the TAVI Era. J Clin Med 2023; 12:5414. [PMID: 37629456 PMCID: PMC10455333 DOI: 10.3390/jcm12165414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/14/2023] [Accepted: 08/19/2023] [Indexed: 08/27/2023] Open
Abstract
Coronary artery disease (CAD) is a common finding in patients suffering from aortic valve stenosis (AS), with a prevalence of over 50% in patients 70 years of age or older. Transcatheter aortic valve intervention (TAVI) is the standard treatment option for patients with severe AS and at least 75 years of age. Current guidelines recommend percutaneous coronary intervention (PCI) in patients planned for TAVI with stenoses of >70% in the proximal segments of non-left main coronary arteries and in >50% of left main stenoses. While the guidelines on myocardial revascularization clearly recommend functional assessment of coronary artery stenoses of less than 90% in the absence of non-invasive ischemia testing, a statement regarding invasive functional testing in AS patients with concomitant CAD is lacking in the recently published guideline on the management of valvular heart disease. This review aims to provide an overview of the hemodynamic background in AS patients, discusses and summarizes the current evidence of invasive functional testing in patients with severe AS, and gives a future perspective on the ongoing trials on that topic.
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Affiliation(s)
- Maren Weferling
- Department of Cardiology, Kerckhoff Heart and Thorax Center, 61231 Bad Nauheim, Germany;
- German Center for Cardiovascular Research (DZHK), Partnersite Rhein-Main, 10785 Berlin, Germany
| | - Won-Keun Kim
- Department of Cardiology, Kerckhoff Heart and Thorax Center, 61231 Bad Nauheim, Germany;
- German Center for Cardiovascular Research (DZHK), Partnersite Rhein-Main, 10785 Berlin, Germany
- Department of Cardio-Thoracic Surgery, Kerckhoff Heart and Thorax Center, 61231 Bad Nauheim, Germany
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12
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Abraham B, Farina JM, Fath A, Abdou M, Elbanna M, Suppah M, Sleem M, Eldaly A, Aly M, Megaly M, Agasthi P, Chao CJ, Fortuin D, Alsidawi S, Ayoub C, Alkhouli M, El Sabbagh A, Holmes D, Brilakis ES, Arsanjani R. The impact of moderate aortic stenosis in acute myocardial infarction: A multicenter retrospective study. Catheter Cardiovasc Interv 2023. [PMID: 37146200 DOI: 10.1002/ccd.30676] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/31/2023] [Accepted: 04/22/2023] [Indexed: 05/07/2023]
Abstract
BACKGROUND Aortic stenosis (AS) is associated with myocardial ischemia through different mechanisms and may impair coronary arterial flow. However, data on the impact of moderate AS in patients with acute myocardial infarction (MI) is limited. AIMS This study aimed to investigate the impact of moderate AS in patients presenting with acute myocardial infarction (MI). METHODS We conducted a retrospective analysis of all patients who presented with acute MI to all Mayo Clinic hospitals, using the Enterprise Mayo PCI Database from 2005 to 2016. Patients were stratified into two groups: moderate AS and mild/no AS. The primary outcome was all cause mortality. RESULTS The moderate AS group included 183 (13.3%) patients, and the mild/no AS group included 1190 (86.7%) patients. During hospitalization, there was no difference between both groups in mortality. Patients with moderate AS had higher in-hospital congestive heart failure (CHF) (8.2% vs. 4.4%, p = 0.025) compared with mild/no AS patients. At 1-year follow-up, patients with moderate AS had higher mortality (23.9% vs. 8.1%, p < 0.001) and higher CHF hospitalization (8.3% vs. 3.7%, p = 0.028). In multivariate analysis, moderate AS was associated with higher mortality at 1-year (odds ratio 2.4, 95% confidence interval [1.4-4.1], p = 0.002). In subgroup analyses, moderate AS increased all-cause mortality in STEMI and NSTEMI patients. CONCLUSION The presence of moderate AS in acute MI patients was associated with worse clinical outcomes during hospitalization and at 1-year follow-up. These unfavorable outcomes highlight the need for a close follow-up of these patients and for timely therapeutic strategies to best manage these coexisting conditions.
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Affiliation(s)
- Bishoy Abraham
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Juan M Farina
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Ayman Fath
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Merna Abdou
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Mostafa Elbanna
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Mustafa Suppah
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Mohamed Sleem
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Abdullah Eldaly
- Department of Cardiology, Mayo Clinic Hospital, Jacksonville, Florida, USA
| | - Mohamed Aly
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Michael Megaly
- Department of Cardiology, Henry Ford Hospital, Detroit, Michigan, USA
| | - Pradyumna Agasthi
- Department of Cardiology, Mayo Clinic Hospital, Rochester, Minnesota, USA
| | - Chieh-Ju Chao
- Department of Cardiology, Mayo Clinic Hospital, Rochester, Minnesota, USA
| | - David Fortuin
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Said Alsidawi
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Chadi Ayoub
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Mohamad Alkhouli
- Department of Cardiology, Mayo Clinic Hospital, Rochester, Minnesota, USA
| | | | - David Holmes
- Department of Cardiology, Mayo Clinic Hospital, Rochester, Minnesota, USA
| | - Emmanouil S Brilakis
- Department of Cardiology, Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Reza Arsanjani
- Department of Cardiology, Mayo Clinic Hospital, Phoenix, Arizona, USA
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13
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Ekmejian A, Allahwala U, Ward M, Bhindi R. Impact of coronary disease patterns, anatomical factors, micro-vascular disease and non-coronary cardiac factors on invasive coronary physiology. Am Heart J 2023; 257:51-61. [PMID: 36509137 DOI: 10.1016/j.ahj.2022.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/22/2022] [Accepted: 12/07/2022] [Indexed: 05/11/2023]
Abstract
Invasive coronary physiology has been applied by interventional cardiologists to guide the management of coronary artery disease (CAD), with well-defined thresholds applied to determine whether CAD should be managed with optimal medical therapy (OMT) alone or OMT and percutaneous coronary intervention (PCI). There are multiple modalities in clinical use, including hyperaemic and non-hyperaemic indices. Despite endorsement in the major guidelines, there are various factors which impact and confound the readings of invasive coronary physiology, both within the coronary tree and beyond. This review article aims to summarise the mechanisms by which these factors impact invasive coronary physiology, and distinguish factors that contribute to ischaemia from confounding factors. The potential for mis-classification of ischaemic status is highlighted. Lastly, the authors identify targets for future research to improve the precision of physiology-guided management of CAD.
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Affiliation(s)
- Avedis Ekmejian
- Royal North Shore Hospital, Department of Cardiology, Sydney, NSW, Australia; University of Sydney Northern Clinical School, Sydney, NSW, Australia; Kolling Institute of Medical Research, Sydney, NSW, Australia.
| | - Usaid Allahwala
- Royal North Shore Hospital, Department of Cardiology, Sydney, NSW, Australia; University of Sydney Northern Clinical School, Sydney, NSW, Australia; Kolling Institute of Medical Research, Sydney, NSW, Australia
| | - Michael Ward
- Royal North Shore Hospital, Department of Cardiology, Sydney, NSW, Australia; University of Sydney Northern Clinical School, Sydney, NSW, Australia; Kolling Institute of Medical Research, Sydney, NSW, Australia
| | - Ravinay Bhindi
- Royal North Shore Hospital, Department of Cardiology, Sydney, NSW, Australia; University of Sydney Northern Clinical School, Sydney, NSW, Australia; Kolling Institute of Medical Research, Sydney, NSW, Australia
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14
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Tehrani DM, Seto AH. Is Coronary Physiology Assessment Valid in Special Circumstances?: Aortic Stenosis, Atrial Fibrillation, Left Ventricular Hypertrophy, and Other. Interv Cardiol Clin 2023; 12:21-29. [PMID: 36372459 DOI: 10.1016/j.iccl.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Fractional flow reserve (FFR) and nonhyperemic pressure ratios (NHPRs) provide an important clinical tool to evaluate the hemodynamic significance of coronary lesions. However, these indices have major limitations. As these indices are meant to be surrogates of coronary flow, clinical scenarios such as aortic stenosis (with increased end-systolic and end-diastolic pressures) or atrial fibrillation (with significant beat-to-beat cardiac output variability) can have significant effect on the accuracy and reliability of these hemodynamic indices. Here, we provide a comprehensive evaluation of the pitfalls, limitations, and strengths of FFR and NHPRs in common clinical scenarios paired with coronary artery disease.
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Affiliation(s)
- David M Tehrani
- Ronald Reagan UCLA Medical Center, 650 Charles East Young Drive South, CHS A2-237, Los Angeles, CA 90095-1679, USA.
| | - Arnold H Seto
- Long Beach Veterans Administration Medical Center, 5901 East 7th Street, 111C, Long Beach, CA 90822, USA. https://twitter.com/arnoldseto
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15
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Dobrolinska MM, Gąsior P, Błach A, Gocoł R, Hudziak D, Wojakowski W. Myocardial Perfusion and Coronary Physiology Assessment of Microvascular Dysfunction in Patients Undergoing Transcatheter Aortic Valve Implantation-Rationale and Design. Biomimetics (Basel) 2022; 7:biomimetics7040230. [PMID: 36546930 PMCID: PMC9775333 DOI: 10.3390/biomimetics7040230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/01/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
The prevalence of coronary artery disease (CAD) in patients with severe aortic stenosis (AS) is 30-68%. Nevertheless, there is still not enough evidence to use invasive assessment of lesion severity, because the hemodynamic milieu of AS may impact the fractional flow reserve (FFR) and non-hyperemic indices. Therefore, the aim of the study is two-fold. First, to measure acute and long-term changes of FFR, index of microvascular resistance (IMR), and coronary flow reserve (CFR) in patients undergoing TAVI procedure. Second, to compare the diagnostic accuracy of intracoronary indices with myocardial perfusion measured by cadmium-zinc-telluride single-photon emission tomography (CZT-SPECT) and find cut-off values defining significant stenosis. We plan to enroll 40 patients eligible for TAVI with intermediate stenosis (30-70%) in the left anterior descending (LAD) coronary artery. In each patient FFR, CFR, and IMR will be measured in addition to myocardial blood flow calculated by CZT-SPECT before and either immediately after TAVI (acute cohort) or in 6 months (late cohort) after the procedure. FFR, CFR, and IMR will be matched with the results of myocardial perfusion measured by CZT-SPECT in the area of LAD. As a result, cut-off values of FFR, CFR, and IMR defining the decreased blood flow will be found.
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Affiliation(s)
- M. M. Dobrolinska
- Department of Cardiology and Structural Heart Diseases, Medical University of Silesia in Katowice, 40-635 Katowice, Poland
- Correspondence:
| | - P. Gąsior
- Department of Cardiology and Structural Heart Diseases, Medical University of Silesia in Katowice, 40-635 Katowice, Poland
| | - A. Błach
- Department of Cardiology and Structural Heart Diseases, Medical University of Silesia in Katowice, 40-635 Katowice, Poland
- Nuclear Medicine Department, Voxel Medical Diagnostic Centre, 40-635 Katowice, Poland
| | - R. Gocoł
- Department of Cardiac Surgery, Medical University of Silesia, 40-635 Katowice, Poland
| | - D. Hudziak
- Department of Cardiac Surgery, Medical University of Silesia, 40-635 Katowice, Poland
| | - W. Wojakowski
- Department of Cardiology and Structural Heart Diseases, Medical University of Silesia in Katowice, 40-635 Katowice, Poland
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16
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Prakash RO, Chakrala TS, Feuer DS, Valdes CA, Pepine CJ, Keeley EC. Critical role of the coronary microvasculature in heart disease: From pathologic driving force to "innocent" bystander. AMERICAN HEART JOURNAL PLUS : CARDIOLOGY RESEARCH AND PRACTICE 2022; 22:100215. [PMID: 38558907 PMCID: PMC10978433 DOI: 10.1016/j.ahjo.2022.100215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 09/30/2022] [Indexed: 04/04/2024]
Abstract
The coronary microvasculature is responsible for providing oxygen and nutrients to myocardial tissue. A healthy microvasculature with an intact and properly functioning endothelium accomplishes this by seemless changes in vascular tone to match supply and demand. Perturbations in the normal physiology of the microvasculature, including endothelial and/or vascular smooth muscle dysfunction, result in impaired function (vasoconstriction, antithrombotic, etc.) and structural (hypertrophic, fibrotic) abnormalities that lead to microvascular ischemia and potential organ damage. While coronary microvascular dysfunction (CMD) is the primary pathologic driving force in ischemia with non-obstructive coronary artery disease (INOCA), angina with no obstructive coronary arteries (ANOCA), and myocardial infarction with non-obstructed coronary arteries (MINOCA), it may be a bystander in many cardiac disorders which later become pathologically associated with signs and/or symptoms of myocardial ischemia. Importantly, regardless of the primary or secondary basis of CMD in the heart, it is associated with important increases in morbidity and mortality. In this review we discuss salient features pertaining to known pathophysiologic mechanisms driving CMD, the spectrum of heart diseases where it places a critical role, invasive and non-invasive diagnostic testing, management strategies, and the gaps in knowledge where future research efforts are needed.
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Affiliation(s)
- Roshni O. Prakash
- Department of Medicine, University of Florida, Gainesville, FL, United States of America
| | - Teja S. Chakrala
- Department of Medicine, University of Florida, Gainesville, FL, United States of America
| | - Daniel S. Feuer
- Department of Medicine, University of Florida, Gainesville, FL, United States of America
| | - Carlos A. Valdes
- Department of Medicine, University of Florida, Gainesville, FL, United States of America
| | - Carl J. Pepine
- Department of Medicine, University of Florida, Gainesville, FL, United States of America
- Division of Cardiovascular Medicine, University of Florida, Gainesville, FL, United States of America
| | - Ellen C. Keeley
- Department of Medicine, University of Florida, Gainesville, FL, United States of America
- Division of Cardiovascular Medicine, University of Florida, Gainesville, FL, United States of America
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17
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Serial changes of coronary flow reserve over one year after transcatheter aortic valve implantation in patients with severe aortic stenosis. IJC HEART & VASCULATURE 2022; 42:101090. [PMID: 35873862 PMCID: PMC9304717 DOI: 10.1016/j.ijcha.2022.101090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/06/2022] [Accepted: 07/11/2022] [Indexed: 01/09/2023]
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18
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Kleczynski P, Dziewierz A, Rzeszutko L, Dudek D, Legutko J. Quantitative flow ratio for evaluation of borderline coronary lesions in patients with severe aortic stenosis. REVISTA ESPANOLA DE CARDIOLOGIA (ENGLISH ED.) 2022; 75:472-478. [PMID: 34024746 DOI: 10.1016/j.rec.2021.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
INTRODUCTION AND OBJECTIVES Quantitative flow ratio (QFR) is a novel noninvasive method for evaluating coronary physiology. However, data on the QFR in patients with aortic stenosis (AS) and coronary artery disease are scarce. Thus, we compared the diagnostic performance of the QFR with that of the resting distal to aortic coronary pressure (Pd/Pa) ratio, fractional flow reserve (FFR), and instantaneous wave-free ratio (iFR), as well as angiographic indices. METHODS A total of 221 AS patients with 416 vessels undergoing FFR/iFR measurements were enrolled in the study. RESULTS The mean percent diameter stenosis (%DS) was 58.6%±13.4% and the mean Pd/Pa ratio, FFR, iFR, and QFR were 0.95±0.03, 0.85±0.07, 0.90±0.04, and 0.84±0.07, respectively. A FFR ≤ 0.80 was noted in 26.0% of interrogated vessels, as well as an iFR ≤ 0.89 in 33.2% and QFR ≤ 0.80 in 31.7%. The QFR had better agreement with FFR (intraclass correlation coefficient [ICC], 0.96; 95% confidence interval [95%CI], 0.95-0.96) than with the iFR (ICC, 0.79; 95%CI, 0.75-0.82) and Pd/Pa ratio (ICC, 0.52; 95%CI, 0.44-0.58). In addition, the QFR showed better diagnostic accuracy (98.6% vs 94.2%; P <.001) and discriminant function (area under the curve=0.996 vs 0.988; P <.001) when the iFR was used as the reference instead of FFR. CONCLUSIONS In patients with AS, the QFR has good agreement with both FFR and iFR. However, the agreement appears to be even better when the iFR is used as the reference, presumably due to the complex nature of the coronary physiology in the assessment of coronary artery disease in patients with severe AS.
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Affiliation(s)
- Pawel Kleczynski
- Department of Interventional Cardiology, Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, John Paul II Hospital, Krakow, Poland.
| | - Artur Dziewierz
- 2(nd) Department of Cardiology, Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, University Hospital, Krakow, Poland
| | - Lukasz Rzeszutko
- 2(nd) Department of Cardiology, Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, University Hospital, Krakow, Poland
| | - Dariusz Dudek
- 2(nd) Department of Cardiology, Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, University Hospital, Krakow, Poland
| | - Jacek Legutko
- Department of Interventional Cardiology, Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, John Paul II Hospital, Krakow, Poland
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19
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Sabbah M, Olsen NT, Minkkinen M, Holmvang L, Tilsted H, Pedersen F, Joshi FR, Ahtarovski K, Sørensen R, Linde JJ, Søndergaard L, Pijls N, Lønborg J, Engstrøm T. Microcirculatory Function in Nonhypertrophic and Hypertrophic Myocardium in Patients With Aortic Valve Stenosis. J Am Heart Assoc 2022; 11:e025381. [PMID: 35470693 PMCID: PMC9238586 DOI: 10.1161/jaha.122.025381] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Left ventricular hypertrophy (LVH) has often been supposed to be associated with abnormal myocardial blood flow and resistance. The aim of this study was to evaluate and quantify the physiological and pathological changes in myocardial blood flow and microcirculatory resistance in patients with and without LVH attributable to severe aortic stenosis. Methods and Results Absolute coronary blood flow and microvascular resistance were measured using a novel technique with continuous thermodilution and infusion of saline. In addition, myocardial mass was assessed with cardiac magnetic resonance imaging. Fifty-three patients with aortic valve stenosis were enrolled in the study. In 32 patients with LVH, hyperemic blood flow per gram of tissue was significantly decreased compared with 21 patients without LVH (1.26±0.48 versus 1.66±0.65 mL·min-1·g-1; P=0.018), whereas minimal resistance indexed for left ventricular mass was significantly increased in patients with LVH (63 [47-82] versus 43 [35-63] Wood Units·kg; P=0.014). Conclusions Patients with LVH attributable to severe aortic stenosis had lower hyperemic blood flow per gram of myocardium and higher minimal myocardial resistance compared with patients without LVH.
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Affiliation(s)
- Muhammad Sabbah
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
| | - Niels Thue Olsen
- Department of CardiologyCopenhagen University Hospital–Herlev and GentofteGentofteDenmark
- Department of Clinical MedicineUniversity of CopenhagenDenmark
| | - Mikko Minkkinen
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
| | - Lene Holmvang
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
| | - Hans‐Henrik Tilsted
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
| | - Frants Pedersen
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
| | - Francis R. Joshi
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
| | - Kiril Ahtarovski
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
| | - Rikke Sørensen
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
| | - Jesper James Linde
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
| | - Lars Søndergaard
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
- Department of Clinical MedicineUniversity of CopenhagenDenmark
| | - Nico Pijls
- Department of CardiologyCatharina HospitalEindhoventhe Netherlands
| | - Jacob Lønborg
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
| | - Thomas Engstrøm
- Department of CardiologyCopenhagen University Hospital–RigshospitaletCopenhagenDenmark
- Department of Clinical MedicineUniversity of CopenhagenDenmark
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20
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Lim PO. Angina with coronary microvascular dysfunction and its physiological assessment: a review with cases. THE BRITISH JOURNAL OF CARDIOLOGY 2022; 29:13. [PMID: 36212789 PMCID: PMC9534121 DOI: 10.5837/bjc.2022.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Imagine that it is possible to know, the actual coronary blood flow. Would this not remove any doubt, if a chest pain is the heart's fault?
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21
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Feasibility and Comparison of Resting Full-Cycle Ratio and Computed Tomography Fractional Flow Reserve in Patients with Severe Aortic Valve Stenosis. J Cardiovasc Dev Dis 2022; 9:jcdd9040116. [PMID: 35448092 PMCID: PMC9030550 DOI: 10.3390/jcdd9040116] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/10/2022] [Accepted: 04/12/2022] [Indexed: 01/09/2023] Open
Abstract
Background: Computed tomography derived Fractional Flow Reserve (CT-FFR) has been shown to decrease the referral rate for invasive coronary angiography (ICA). The purpose of the study was to evaluate the diagnostic performance of CT-FFR compared to hyperemia-free index Resting Full-cycle Ratio (RFR) in patients with relevant aortic stenosis (AS) and intermediate coronary stenosis. Methods: 41 patients with 46 coronary lesions underwent ICA with quantitative coronary angiography (QCA), pressure wire assessment and routine pre-transcatheter aortic valve replacement (TAVR) computed tomography (CT). CT-FFR analysis was performed using prototype on-site software. Results: RFR showed a significant correlation with CT-FFR (Pearson’s correlation, r = 0.632, p < 0.001). On a per-lesion basis, diagnostic accuracy, sensitivity, specificity, positive predictive value, and negative predictive value of CT-FFR were 82.6% (95% CI 68.6−92.2), 69.6% (95% CI 47.1−86.8), 95.7% (95% CI 78.1−99.9), 94.1% (95% CI 69.8−99.1), and 75.9% (95% CI 62.7−85.4), respectively. The optimal cutoff value of the CT-FFR for RFR ≤ 0.89 prediction was 0.815. The area under the receiver curve showed a larger area under the curve for CT-FFR (0.87; 95% CI 0.75−0.98) compared with CTA stenosis of ≥50% (0.54, 95% CI 0.38−0.71), CTA ≥ 70% (0.72, 95% CI 0.57−0.87) and QCA ≥ 50% (0.67, 95% CI 0.52−0.83). Conclusions: CT-FFR assessed by routine pre-TAVR CT is safe and feasible and shows a significant correlation with RFR in patients with AS. CT-FFR is superior to QCA ≥ 50%, CT ≥ 50% and CT ≥ 70% in assessing the hemodynamic relevance of intermediate coronary lesions. Thus, CT-FFR has the potential to guide revascularization in patients with AS.
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22
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Aleksandric S, Banovic M, Beleslin B. Challenges in Diagnosis and Functional Assessment of Coronary Artery Disease in Patients With Severe Aortic Stenosis. Front Cardiovasc Med 2022; 9:849032. [PMID: 35360024 PMCID: PMC8961810 DOI: 10.3389/fcvm.2022.849032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 02/16/2022] [Indexed: 01/10/2023] Open
Abstract
More than half of patients with severe aortic stenosis (AS) over 70 years old have coronary artery disease (CAD). Exertional angina is often present in AS-patients, even in the absence of significant CAD, as a result of oxygen supply/demand mismatch and exercise-induced myocardial ischemia. Moreover, persistent myocardial ischemia leads to extensive myocardial fibrosis and subsequent coronary microvascular dysfunction (CMD) which is defined as reduced coronary vasodilatory capacity below ischemic threshold. Therefore, angina, as well as noninvasive stress tests, have a low specificity and positive predictive value (PPV) for the assessment of epicardial coronary stenosis severity in AS-patients. Moreover, in symptomatic patients with severe AS exercise testing is even contraindicated. Given the limitations of noninvasive stress tests, coronary angiography remains the standard examination for determining the presence and severity of CAD in AS-patients, although angiography alone has poor accuracy in the evaluation of its functional severity. To overcome this limitation, the well-established invasive indices for the assessment of coronary stenosis severity, such as fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR), are now in focus, especially in the contemporary era with the rapid increment of transcatheter aortic valve replacement (TAVR) for the treatment of AS-patients. TAVR induces an immediate decrease in hyperemic microcirculatory resistance and a concomitant increase in hyperemic flow velocity, whereas resting coronary hemodynamics remain unaltered. These findings suggest that FFR may underestimate coronary stenosis severity in AS-patients, whereas iFR as the non-hyperemic index is independent of the AS severity. However, because resting coronary hemodynamics do not improve immediately after TAVR, the coronary vasodilatory capacity in AS-patients treated by TAVR remain impaired, and thus the iFR may overestimate coronary stenosis severity in these patients. The optimal method for evaluating myocardial ischemia in patients with AS and co-existing CAD has not yet been fully established, and this important issue is under further investigation. This review is focused on challenges, limitations, and future perspectives in the functional assessment of coronary stenosis severity in these patients, bearing in mind the complexity of coronary physiology in the presence of this valvular heart disease.
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Affiliation(s)
- Srdjan Aleksandric
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Marko Banovic
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Branko Beleslin
- Cardiology Clinic, University Clinical Center of Serbia, Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
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23
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Scarsini R, Venturi G, Pighi M, Lunardi M, Kotronias R, Del Sole PA, Rubino F, Tavella D, Pesarini G, Banning A, Ribichini F. Incomplete functional revascularization is associated with adverse clinical outcomes after transcatheter aortic valve implantation. CARDIOVASCULAR REVASCULARIZATION MEDICINE 2022; 42:47-52. [DOI: 10.1016/j.carrev.2022.02.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 02/24/2022] [Indexed: 01/09/2023]
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24
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Minten L, McCutcheon K, Jentjens S, Vanhaverbeke M, Segers VFM, Bennett J, Dubois C. The coronary and microcirculatory measurements in patients with aortic valve stenosis study: rationale and design. Am J Physiol Heart Circ Physiol 2021; 321:H1106-H1116. [PMID: 34676781 DOI: 10.1152/ajpheart.00541.2021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Although concomitant coronary artery disease (CAD) is frequent in patients with severe aortic stenosis (AS), hemodynamic assessment of CAD severity in patients undergoing valve replacement for severe AS is challenging. Myocardial hypertrophic remodeling interferes with coronary blood flow and may influence the values of fractional flow reserve (FFR) and nonhyperemic pressure ratios (NHPRs). The aim of the current study is to investigate the effect of the AS and its treatment on current indices used for evaluation of CAD. We will compare intracoronary hemodynamics before, immediately after, and 6 mo after aortic valve replacement (AVR) when it is expected that microvascular function has improved. Furthermore, we will compare FFR and resting full-cycle ratio (RFR) with myocardial perfusion single-photon emission-computed tomography (SPECT) as indicators of myocardial ischemia in patients with AS and CAD. One-hundred consecutive patients with AS and intermediate CAD will be prospectively included. Patients will undergo pre-AVR SPECT and intracoronary hemodynamic assessment at baseline, immediately after valve replacement [if transcatheter AVR (TAVR) is chosen], and 6 mo after AVR. The primary end point is the change in FFR 6 mo after AVR. Secondary end points include the acute change of FFR after TAVR, the diagnostic accuracy of FFR versus RFR compared with SPECT for the assessment of ischemia, changes in microvascular function as assessed by the index of microcirculatory resistance (IMR), and the effect of these changes on FFR. The present study will evaluate intracoronary hemodynamic parameters before, immediately after, and 6 mo after AVR in patients with AS and intermediate coronary stenosis. The understanding of the impact of AVR on the assessment of FFR, NHPR, and microvascular function may help guide the need for revascularization in patients with AS and CAD planned for AVR.
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Affiliation(s)
- Lennert Minten
- Department of Cardiovascular Sciences, Katholieke Universiteit Leuven, Leuven, Belgium.,Department of Cardiovascular Medicine, University Hospitals Leuven, Universitair Ziekenhuis Leuven, Leuven, Belgium
| | - Keir McCutcheon
- Department of Cardiovascular Sciences, Katholieke Universiteit Leuven, Leuven, Belgium.,Department of Cardiovascular Medicine, University Hospitals Leuven, Universitair Ziekenhuis Leuven, Leuven, Belgium
| | - Sander Jentjens
- Department of Nuclear Medicine, University Hospitals Leuven, Universitair Ziekenhuis Leuven, Leuven, Belgium
| | - Maarten Vanhaverbeke
- Department of Cardiovascular Medicine, University Hospitals Leuven, Universitair Ziekenhuis Leuven, Leuven, Belgium
| | - Vincent F M Segers
- Laboratory of PhysioPharmacology, University of Antwerp, Antwerp, Belgium.,Department of Cardiology, University Hospital Antwerp, Edegem, Belgium
| | - Johan Bennett
- Department of Cardiovascular Sciences, Katholieke Universiteit Leuven, Leuven, Belgium.,Department of Cardiovascular Medicine, University Hospitals Leuven, Universitair Ziekenhuis Leuven, Leuven, Belgium
| | - Christophe Dubois
- Department of Cardiovascular Sciences, Katholieke Universiteit Leuven, Leuven, Belgium.,Department of Cardiovascular Medicine, University Hospitals Leuven, Universitair Ziekenhuis Leuven, Leuven, Belgium
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25
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Ge X, Liu Y, Tu S, Simakov S, Vassilevski Y, Liang F. Model-based analysis of the sensitivities and diagnostic implications of FFR and CFR under various pathological conditions. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING 2021; 37:e3257. [PMID: 31487426 DOI: 10.1002/cnm.3257] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 07/28/2019] [Accepted: 09/01/2019] [Indexed: 06/10/2023]
Abstract
Although fractional flow reserve (FFR) and coronary flow reserve (CFR) are both frequently used to assess the functional severity of coronary artery stenosis, discordant results of diagnosis between FFR and CFR in some patient cohorts have been reported. In the present study, a computational model was employed to quantify the impacts of various pathophysiological factors on FFR and CFR. In addition, a hyperemic myocardial ischemic index (HMIx) was proposed as a reference for comparing the diagnostic performances of FFR and CFR. Obtained results showed that CFR was more susceptible than FFR to the influence of many pathophysiological factors unrelated to coronary artery stenosis. In particular, the numerical study proved that increasing hyperemic coronary microvascular resistance significantly elevated FFR while reducing CFR despite fixed severity of coronary artery stenosis, whereas introducing aortic valve disease only caused a significant decrease in CFR with little influence on FFR. These results provided theoretical evidence for explaining some clinical observations, such as the increased risk of discordant diagnostic results between FFR and CFR in patients with increased hyperemic microvascular resistance, and significant increase in CFR after surgical relief of severe aortic valve disease. When evaluated with respect to the predictive value for hyperemic myocardial ischemia, the performance of FFR was found to be considerably compromised in the presence of severe coronary vasodilation dysfunction or aortic valve disease, whereas the relationship between CFR and HMIx remained relatively stable, suggesting that CFR may be a more reliable indicator of myocardial ischemia under complex pathophysiological conditions.
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Affiliation(s)
- Xinyang Ge
- School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Youjun Liu
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, 100124, China
| | - Shengxian Tu
- Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Sergey Simakov
- Moscow Institute of Physics and Technology, Dolgoprudny, 141700, Russia
- Institute for Personalized Medicine, Sechenov University, Moscow, 119991, Russia
| | - Yuri Vassilevski
- Moscow Institute of Physics and Technology, Dolgoprudny, 141700, Russia
- Institute for Personalized Medicine, Sechenov University, Moscow, 119991, Russia
- Institute of Numerical Mathematics, Russian Academy of Sciences, Moscow, 119333, Russia
| | - Fuyou Liang
- School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai Jiao Tong University, Shanghai, 200240, China
- Institute for Personalized Medicine, Sechenov University, Moscow, 119991, Russia
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26
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Pighi M, Giovannini D, Scarsini R, Piazza N. Diagnostic Work-Up of the Aortic Patient: An Integrated Approach toward the Best Therapeutic Option. J Clin Med 2021; 10:5120. [PMID: 34768640 PMCID: PMC8584438 DOI: 10.3390/jcm10215120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/22/2021] [Accepted: 10/29/2021] [Indexed: 01/09/2023] Open
Abstract
Aortic stenosis (AS) is the most common valvular heart disease. In the last decade, transcatheter aortic valve implantation (TAVI) has become the standard of care for symptomatic patients at high surgical risk. Recently, indications to TAVI have also been extended to the low surgical risk and intermediate surgical risk populations. Consequently, in this setting, some aspects acquire greater relevance: surgical risk evaluation, clinical assessment, multimodality imaging of the valve, and management of coronary artery disease. Moreover, future issues such as coronary artery re-access and valve-in-valve interventions should be considered in the valve selection process. This review aims to summarize the principal aspects of a multidimensional (multidisciplinary) and comprehensive preprocedural work-up. The Heart Team is at the center of the decision-making process of the management of aortic valve disease and bears responsibility for offering each patient a tailored approach based on an individual evaluation of technical aspects together with the risks and benefits of each modality. Considering the progressive expansion in TAVI indication and technological progress, the role of a work-up and multidisciplinary Heart Team will be even more relevant.
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Affiliation(s)
- Michele Pighi
- Division of Cardiology, Department of Medicine, McGill University Health Center, Montreal, QC H4A 3J1, Canada;
- Division of Cardiology, Department of Medicine, University of Verona, 37126 Verona, Italy; (D.G.); (R.S.)
| | - Davide Giovannini
- Division of Cardiology, Department of Medicine, University of Verona, 37126 Verona, Italy; (D.G.); (R.S.)
| | - Roberto Scarsini
- Division of Cardiology, Department of Medicine, University of Verona, 37126 Verona, Italy; (D.G.); (R.S.)
| | - Nicolo Piazza
- Division of Cardiology, Department of Medicine, McGill University Health Center, Montreal, QC H4A 3J1, Canada;
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27
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Patel KP, Michail M, Treibel TA, Rathod K, Jones DA, Ozkor M, Kennon S, Forrest JK, Mathur A, Mullen MJ, Lansky A, Baumbach A. Coronary Revascularization in Patients Undergoing Aortic Valve Replacement for Severe Aortic Stenosis. JACC Cardiovasc Interv 2021; 14:2083-2096. [PMID: 34620388 DOI: 10.1016/j.jcin.2021.07.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 06/25/2021] [Accepted: 07/27/2021] [Indexed: 01/09/2023]
Abstract
Aortic stenosis (AS) and coronary artery disease (CAD) frequently coexist, with up to two thirds of patients with AS having significant CAD. Given the challenges when both disease states are present, these patients require a tailored approach diagnostically and therapeutically. In this review the authors address the impact of AS and aortic valve replacement (AVR) on coronary hemodynamic status and discuss the assessment of CAD and the role of revascularization in patients with concomitant AS and CAD. Remodeling in AS increases the susceptibility of myocardial ischemia, which can be compounded by concomitant CAD. AVR can improve coronary hemodynamic status and reduce ischemia. Assessment of the significance of coexisting CAD can be done using noninvasive and invasive metrics. Revascularization in patients undergoing AVR can benefit certain patients in whom CAD is either prognostically or symptomatically important. Identifying this cohort of patients is challenging and as yet incomplete. Patients with dual pathology present a diagnostic and therapeutic challenge; both AS and CAD affect coronary hemodynamic status, they provoke similar symptoms, and their respective treatments can have an impact on both diseases. Decisions regarding coronary revascularization should be based on understanding this complex relationship, using appropriate coronary assessment and consensus within a multidisciplinary team.
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Affiliation(s)
- Kush P Patel
- Institute of Cardiovascular Science, University College London, London, United Kingdom; Barts Heart Centre, St. Bartholomew's Hospital, London, United Kingdom
| | - Michael Michail
- Institute of Cardiovascular Science, University College London, London, United Kingdom; Sussex Cardiac Centre, Brighton and Sussex University Hospitals NHS Trust, Brighton, United Kingdom
| | - Thomas A Treibel
- Institute of Cardiovascular Science, University College London, London, United Kingdom; Barts Heart Centre, St. Bartholomew's Hospital, London, United Kingdom
| | - Krishnaraj Rathod
- Barts Heart Centre, St. Bartholomew's Hospital, London, United Kingdom
| | - Daniel A Jones
- Barts Heart Centre, St. Bartholomew's Hospital, London, United Kingdom; Centre for Cardiovascular Medicine and Devices, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Mick Ozkor
- Barts Heart Centre, St. Bartholomew's Hospital, London, United Kingdom
| | - Simon Kennon
- Barts Heart Centre, St. Bartholomew's Hospital, London, United Kingdom
| | - John K Forrest
- Yale University School of Medicine, New Haven, Connecticut, USA
| | - Anthony Mathur
- Barts Heart Centre, St. Bartholomew's Hospital, London, United Kingdom; Centre for Cardiovascular Medicine and Devices, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Michael J Mullen
- Institute of Cardiovascular Science, University College London, London, United Kingdom; Barts Heart Centre, St. Bartholomew's Hospital, London, United Kingdom
| | - Alexandra Lansky
- Centre for Cardiovascular Medicine and Devices, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom; Yale University School of Medicine, New Haven, Connecticut, USA
| | - Andreas Baumbach
- Barts Heart Centre, St. Bartholomew's Hospital, London, United Kingdom; Centre for Cardiovascular Medicine and Devices, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom; Yale University School of Medicine, New Haven, Connecticut, USA.
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28
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Wesselink EM, Abawi M, Kooistra NHM, Kappen TH, Agostoni P, Emmelot-Vonk M, Pasma W, van Klei WA, van Jaarsveld RC, van Dongen CS, Doevendans PAFM, Slooter AJC, Stella PR. Intraoperative hypotension and delirium among older adults undergoing transcatheter aortic valve replacement. J Am Geriatr Soc 2021; 69:3177-3185. [PMID: 34612514 PMCID: PMC9293424 DOI: 10.1111/jgs.17361] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 01/21/2023]
Abstract
Background Postoperative delirium (POD) is a frequently observed complication after transcatheter aortic valve replacement (TAVR). The effects of intraoperative hypotension (IOH) on POD occurrence are currently unclear. Methods A retrospective observational cohort study of patients who underwent TAVR was conducted. We predefined IOH as area under the threshold (AUT) of five mean arterial blood pressures (MBP), varying from <100 to <60 mmHg. The AUT consisted of the combination of duration and depth under the MBP thresholds, expressed in mmHg*min. All MBP AUTs were computed based on the complete procedure, independent of procedural phase or duration. Results This cohort included 675 patients who underwent TAVR under general anesthesia (n = 128, 19%) or procedural sedation (n = 547, 81%). Delirium occurred mostly during the first 2 days after TAVR, and was observed in n = 93 (14%) cases. Furthermore, 674, 672, 663, 630, and 518 patients had at least 1 min intraoperative MBP <100, <90, <80, <70, and <60 mmHg, respectively. Patients who developed POD had higher AUT based on all five MBP thresholds during TAVR. The penalized adjusted odds ratio varied between 1.08 (99% confidence interval [CI] 0.74–1.56) for the AUT based on MBP < 100 mmHg and OR 1.06 (99% CI 0.88–1.28) for the AUT based on MBP < 60 mmHg. Conclusions Intraoperative hypotension is frequently observed during TAVR, but not independently associated with POD after TAVR. Other potential factors than intraoperative hypotension may explain the occurrence of delirium after TAVR.
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Affiliation(s)
- Esther M Wesselink
- Department of Anesthesiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Masieh Abawi
- Department of Cardiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Nynke H M Kooistra
- Department of Cardiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Teus H Kappen
- Department of Anesthesiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Pierfrancesco Agostoni
- Department of Cardiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,HartCentrum, Ziekenhuis Netwerk Antwerpen (ZNA) Middelheim, Antwerp, Belgium
| | - Marielle Emmelot-Vonk
- Department of Geriatrics, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Wietze Pasma
- Department of Anesthesiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Wilton A van Klei
- Department of Anesthesiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Romy C van Jaarsveld
- Department of Cardiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Charlotte S van Dongen
- Department of Cardiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Pieter A F M Doevendans
- Department of Cardiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Netherlands Heart Institute, Utrecht, The Netherlands
| | - Arjen J C Slooter
- Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Pieter R Stella
- Department of Cardiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
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29
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Del Buono MG, Montone RA, Camilli M, Carbone S, Narula J, Lavie CJ, Niccoli G, Crea F. Coronary Microvascular Dysfunction Across the Spectrum of Cardiovascular Diseases: JACC State-of-the-Art Review. J Am Coll Cardiol 2021; 78:1352-1371. [PMID: 34556322 PMCID: PMC8528638 DOI: 10.1016/j.jacc.2021.07.042] [Citation(s) in RCA: 220] [Impact Index Per Article: 73.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/08/2021] [Accepted: 07/19/2021] [Indexed: 12/12/2022]
Abstract
Coronary microvascular dysfunction (CMD) encompasses several pathogenetic mechanisms involving coronary microcirculation and plays a major role in determining myocardial ischemia in patients with angina without obstructive coronary artery disease, as well as in several other conditions, including obstructive coronary artery disease, nonischemic cardiomyopathies, takotsubo syndrome, and heart failure, especially the phenotype associated with preserved ejection fraction. Unfortunately, despite the identified pathophysiological and prognostic role of CMD in several conditions, to date, there is no specific treatment for CMD. Due to the emerging role of CMD as common denominator in different clinical phenotypes, additional research in this area is warranted to provide personalized treatments in this "garden variety" of patients. The purpose of this review is to describe the pathophysiological mechanisms of CMD and its mechanistic and prognostic role across different cardiovascular diseases. We will also discuss diagnostic modalities and the potential therapeutic strategies resulting from recent clinical studies.
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Affiliation(s)
- Marco Giuseppe Del Buono
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy. https://twitter.com/marcodelbuono3
| | - Rocco A Montone
- Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
| | - Massimiliano Camilli
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Salvatore Carbone
- Department of Kinesiology and Health Sciences, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, Virginia, USA; VCU Pauley Heart Center, Division of Cardiology, Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Jagat Narula
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Carl J Lavie
- Department of Cardiovascular Diseases, Ochsner Clinical School, New Orleans, Louisiana, USA
| | | | - Filippo Crea
- Department of Cardiovascular and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy; Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
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30
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Kleczynski P, Dziewierz A, Rzeszutko L, Dudek D, Legutko J. Hyperemic versus non-hyperemic indexes for coronary physiology assessment in patients with severe aortic stenosis. Adv Med Sci 2021; 66:366-371. [PMID: 34315011 DOI: 10.1016/j.advms.2021.07.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 06/22/2021] [Accepted: 07/18/2021] [Indexed: 01/09/2023]
Abstract
PURPOSE Recent data suggests that fractional flow reserve (FFR) may underestimate intermediate coronary stenosis in the presence of severe aortic stenosis (AS), whereas instantaneous wave-free ratio (iFR) values may remain similar after treatment of AS, yet the evidence still lacks to use iFR as the reference. We aimed to compare FFR/iFR values in the AS setting. MATERIALS AND METHODS The functional significance of 416 coronary lesions in 221 patients with severe AS was investigated with iFR and FFR. RESULTS The diagnostic agreement between iFR and FFR has been tested, using the cut-off value of 0.89 for iFR and 0.80 for FFR. The mean diameter stenosis was 58.6 ± 13.4% with FFR of 0.85 ± 0.07 and iFR of 0.90 ± 0.04. FFR ≤0.80 was identified in 26.0% and iFR≤0.89 in 33.2% of interrogated vessels. Good agreement between iFR and FFR was confirmed (Intraclass Correlation Coefficient 0.83 [95%CI 0.79-0.85]). The overall diagnostic accuracy (AUC in ROC analysis) of FFR in detecting iFR≤0.89 was 0.997 (95%CI 0.986 to 1.000; p<0.001) and of iFR in detecting FFR≤0.80 was 0.995 (95%CI 0.983 to 0.999; p<0.001). The optimal cut-off value for FFR to detect iFR≤0.89 was 0.82 with sensitivity, specificity, and accuracy of 97.1%, 98.9%, and 97.7%, respectively, and for IFR to detect FFR≤0.80 was 0.88 with sensitivity, specificity, and accuracy of 99.1%, 95.8%, and 97.4%, respectively. CONCLUSION In the presence of AS, FFR has good agreement with iFR. However, the optimal FFR/iFR threshold to identify iFR≤0.89/FFR≤0.80 may be different from the standard thresholds of ischemia.
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Affiliation(s)
- Pawel Kleczynski
- Department of Interventional Cardiology, Institute of Cardiology, Jagiellonian University Medical College, John Paul II Hospital, Krakow, Poland.
| | - Artur Dziewierz
- 2(nd) Department of Cardiology, Institute of Cardiology, Jagiellonian University Medical College, University Hospital, Krakow, Poland
| | - Lukasz Rzeszutko
- 2(nd) Department of Cardiology, Institute of Cardiology, Jagiellonian University Medical College, University Hospital, Krakow, Poland
| | - Dariusz Dudek
- 2(nd) Department of Cardiology, Institute of Cardiology, Jagiellonian University Medical College, University Hospital, Krakow, Poland
| | - Jacek Legutko
- Department of Interventional Cardiology, Institute of Cardiology, Jagiellonian University Medical College, John Paul II Hospital, Krakow, Poland
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31
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Kleczynski P, Dziewierz A, Rzeszutko L, Dudek D, Legutko J. El cociente de flujo cuantitativo en pacientes con estenosis aórtica grave y lesiones coronarias intermedias. Rev Esp Cardiol 2021. [DOI: 10.1016/j.recesp.2021.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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32
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Seitz A, Baumann S, Sechtem U, Ong P. Optimal Prognostication of Patients with Coronary Stenoses in the Pre- and Post-PCI setting: Comments on TARGET FFR and DEFINE-FLOW Trials Presented at TCT Connect 2020. Eur Cardiol 2021; 16:e17. [PMID: 33995587 PMCID: PMC8117135 DOI: 10.15420/ecr.2021.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 11/12/2022] Open
Abstract
The body of evidence for the use of coronary physiology assessments to guide percutaneous coronary intervention (PCI) has been growing continuously in recent decades. Two studies presented during TCT Connect 2020 added insights into the prognostic value of coronary physiology measurements in pre- and post-PCI settings. The first study, TARGET FFR, assessed whether a post-PCI fractional flow reserve (FFR)-guided incremental optimisation strategy (PIOS) was superior to angiography-guided PCI. The second study, DEFINE-FLOW, assessed the course of stenoses with fractional and coronary flow reserve (FFR+/CFR-) discordance when treated medically. This article summarises the main results from the TARGET FFR and the DEFINE-FLOW trials and puts them into the context of the existing literature.
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Affiliation(s)
- Andreas Seitz
- Department of Cardiology and Angiology, Robert-Bosch-Krankenhaus Stuttgart, Germany
| | - Stefan Baumann
- Department of Cardiology, Pneumology and Angiology, University Hospital Mannheim Mannheim, Germany
| | - Udo Sechtem
- Department of Cardiology and Angiology, Robert-Bosch-Krankenhaus Stuttgart, Germany
| | - Peter Ong
- Department of Cardiology and Angiology, Robert-Bosch-Krankenhaus Stuttgart, Germany
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33
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Carbone A, D'Andrea A, Sperlongano S, Tagliamonte E, Mandoli GE, Santoro C, Evola V, Bandera F, Morrone D, Malagoli A, D'Ascenzi F, Bossone E, Cameli M. Echocardiographic assessment of coronary microvascular dysfunction: Basic concepts, technical aspects, and clinical settings. Echocardiography 2021; 38:993-1001. [PMID: 33948990 PMCID: PMC8252466 DOI: 10.1111/echo.15059] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 03/15/2021] [Accepted: 04/06/2021] [Indexed: 01/06/2023] Open
Abstract
Coronary flow reserve is the capacity of the coronary circulation to augment the blood flow in response an increase in myocardial metabolic demands and has a powerful prognostic significance in different clinical situations. It might assess with invasive and noninvasive technique. Transthoracic echocardiography Doppler is an emerging diagnostic technique, noninvasive, highly feasible, safe for patient and physician, without radiation, and able to detect macrovascular and microvascular anomalies in the coronary circulation. This review aims to describe the benefit and limits of echocardiographic assessment of coronary flow reserve.
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Affiliation(s)
- Andreina Carbone
- Department of Cardiology, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Antonello D'Andrea
- Department of Cardiology and Intensive Coronary Unit, "Umberto I" Hospital, Nocera Inferiore (SA), Italy
| | - Simona Sperlongano
- Department of Cardiology and Intensive Coronary Unit, "Umberto I" Hospital, Nocera Inferiore (SA), Italy
| | - Ercole Tagliamonte
- Department of Cardiology and Intensive Coronary Unit, "Umberto I" Hospital, Nocera Inferiore (SA), Italy
| | - Giulia Elena Mandoli
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, Siena, Italy
| | - Ciro Santoro
- Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy
| | - Vincenzo Evola
- Department of Clinical and Experimental Medicine, University of Palermo, Palermo, Italy
| | - Francesco Bandera
- Heart Failure Unit, Chair of Cardiology, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy.,Department of Biomedical Health Science, University of Milan, Milan, Italy
| | - Doralisa Morrone
- Cardiothoracic Department, Cisanello Hospital, University of Pisa, Pisa, Italy
| | | | - Flavio D'Ascenzi
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, Siena, Italy
| | | | - Matteo Cameli
- Department of Medical Biotechnologies, Division of Cardiology, University of Siena, Siena, Italy
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34
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Pathophysiology, Diagnosis, and Treatment of Patients with Concomitant Severe Aortic Stenosis and Coronary Artery Disease: A Closer Look to the Unresolved Perplexity. J Clin Med 2021; 10:jcm10081617. [PMID: 33920349 PMCID: PMC8070187 DOI: 10.3390/jcm10081617] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/01/2021] [Accepted: 04/08/2021] [Indexed: 01/09/2023] Open
Abstract
Degenerative aortic stenosis (AS) and coronary artery disease (CAD) are the most prevalent cardiovascular diseases in developed countries, and they coexist in up to 50% of patients. The pathophysiological rationale behind concomitant AS and CAD is discussed in detail in this review, together with prognostic implications. Detecting CAD in patients with AS may be challenging, as AS may mask the existence and symptoms of CAD. The safety and reliability of invasive and non-invasive physiological assessment for epicardial coronary disease are also a matter of debate. Finally, the selection and timing of optimal treatment of CAD in patients with severe AS are still unclear. Given the aging of the population, the increase in the prevalence of AS, and the ongoing paradigm shift in its treatment, controversies in the diagnosis and treatment of CAD in the setting of AS are deemed to grow in importance. In this paper, we present contemporary issues in the diagnosis and management of CAD in patients with severe AS who are transcatheter aortic valve implantation (TAVI) candidates and provide perspective on the treatment approach.
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35
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Cerrato E, Mejía-Rentería H, Franzè A, Quadri G, Belliggiano D, Biscaglia S, Lo Savio L, Spataro F, Erriquez A, Giacobbe F, Vergara-Uzcategui C, di Girolamo D, Tebaldi M, Varbella F, Campo G, Escaned J. Quantitative flow ratio as a new tool for angiography-based physiological evaluation of coronary artery disease: a review. Future Cardiol 2021; 17:1435-1452. [PMID: 33739146 DOI: 10.2217/fca-2020-0199] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The functional evaluation of coronary stenoses has obtained important clinical results in recent years, resulting in strong guideline recommendations. Nonetheless, the use of coronary wire-based functional evaluation has not yet become part of the routine in catheterization laboratories for several reasons, including the need to advance a wire into the coronary vessel to interrogate the stenosis. Angiography-derived indexes have been introduced to expand the current use of physiology to estimate the functional meaning of a stenosis on the basis of angiographic data only. The most studied and validated angiography-derived index is certainly the quantitative flow ratio. This article will summarize the basics of the quantitative flow ratio, the related validation studies and its current and future applications.
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Affiliation(s)
- Enrico Cerrato
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Hernan Mejía-Rentería
- Department of Cardiology, Hospital Clinico San Carlos, Instituto de Investigación Sanitaria San Carlos & Universidad Complutense de Madrid, Madrid, Spain
| | - Alfonso Franzè
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Giorgio Quadri
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Davide Belliggiano
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Simone Biscaglia
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria di Ferrara, Cona, Italy.,Maria Cecilia Hospital, GVM Care & Research, Cotignola, RA, Italy
| | - Luca Lo Savio
- Interventional Cardiology Unit, Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Fabio Spataro
- Interventional Cardiology Unit, Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Andrea Erriquez
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria di Ferrara, Cona, Italy.,Maria Cecilia Hospital, GVM Care & Research, Cotignola, RA, Italy
| | - Federico Giacobbe
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Carlos Vergara-Uzcategui
- Department of Cardiology, Hospital Clinico San Carlos, Instituto de Investigación Sanitaria San Carlos & Universidad Complutense de Madrid, Madrid, Spain
| | | | - Matteo Tebaldi
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria di Ferrara, Cona, Italy.,Maria Cecilia Hospital, GVM Care & Research, Cotignola, RA, Italy
| | - Ferdinando Varbella
- Interventional Cardiology Unit, San Luigi Gonzaga University Hospital, Orbassano & Rivoli Infermi Hospital, Rivoli, Turin, Italy
| | - Gianluca Campo
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria di Ferrara, Cona, Italy.,Maria Cecilia Hospital, GVM Care & Research, Cotignola, RA, Italy
| | - Javier Escaned
- Department of Cardiology, Hospital Clinico San Carlos, Instituto de Investigación Sanitaria San Carlos & Universidad Complutense de Madrid, Madrid, Spain
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36
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Konst RE, Guzik TJ, Kaski JC, Maas AHEM, Elias-Smale SE. The pathogenic role of coronary microvascular dysfunction in the setting of other cardiac or systemic conditions. Cardiovasc Res 2020; 116:817-828. [PMID: 31977015 PMCID: PMC7526753 DOI: 10.1093/cvr/cvaa009] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 12/09/2019] [Accepted: 01/21/2020] [Indexed: 12/13/2022] Open
Abstract
Coronary microvascular dysfunction (CMD) plays a pathogenic role in cardiac and systemic conditions other than microvascular angina. In this review, we provide an overview of the pathogenic role of CMD in the setting of diabetes mellitus, obesity, hypertensive pregnancy disorders, chronic inflammatory and autoimmune rheumatic disorders, chronic kidney disease, hypertrophic cardiomyopathy, and aortic valve stenosis. In these various conditions, CMD results from different structural, functional, and/or dynamic alterations in the coronary microcirculation associated with the primary disease process. CMD is often detectable very early in the course of the primary disease, before clinical symptoms or signs of myocardial ischaemia are present, and it portrays an increased risk for cardiovascular events.
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Affiliation(s)
- Regina E Konst
- Department of Cardiology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Tomasz J Guzik
- Institute of Cardiovascular and Medical Sciences, British Heart Foundation Glasgow Cardiovascular Research Centre, Glasgow, UK
| | - Juan-Carlos Kaski
- The Queen Elizabeth Hospital Discipline of Medicine, University of Adelaide, Central Adelaide Local Health Network, Coronary Vasomotion Disorders International Study Group (COVADIS), Adelaide, Australia.,Molecular and Clinical Sciences Research Institute, St George's, University of London, London, UK
| | - Angela H E M Maas
- Department of Cardiology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Suzette E Elias-Smale
- Department of Cardiology, Radboud University Medical Center, Nijmegen, the Netherlands
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37
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Michail M, Thakur U, Mehta O, Ramzy JM, Comella A, Ihdayhid AR, Cameron JD, Nicholls SJ, Hoole SP, Brown AJ. Non-hyperaemic pressure ratios to guide percutaneous coronary intervention. Open Heart 2020; 7:e001308. [PMID: 33004619 PMCID: PMC7534727 DOI: 10.1136/openhrt-2020-001308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 07/03/2020] [Accepted: 08/07/2020] [Indexed: 01/10/2023] Open
Abstract
The use of fractional flow reserve (FFR) in guiding revascularisation improves patient outcomes and has been well-established in clinical guidelines. Despite this, the uptake of FFR has been limited, likely attributable to the perceived increase in procedural time and use of hyperaemic agents that can cause patient discomfort. This has led to the development of instantaneous wave-free ratio (iFR), an alternative non-hyperaemic pressure ratio (NHPR). Since its inception, the use of iFR has been supported by an increasing body of evidence and is now guideline recommended. More recently, other commercially available NHPRs including diastolic hyperaemia-free ratio and resting full-cycle ratio have emerged. Studies have demonstrated that these indices, in addition to mean distal coronary artery pressure to mean aortic pressure ratio, are mathematically analogous (with specific nuances) to iFR. Additionally, there is increasing data demonstrating the equivalent diagnostic performance of alternative NHPRs in comparison with iFR and FFR. These NHPRs are now integral within most current pressure wire systems and are commonly available in the catheter laboratory. It is therefore key to understand the fundamental differences and evidence for NHPRs to guide appropriate clinical decision-making.
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Affiliation(s)
- Michael Michail
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Victoria, Australia
- Institute of Cardiovascular Science, University College London, London, United Kingdom
| | - Udit Thakur
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Victoria, Australia
| | - Ojas Mehta
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Victoria, Australia
| | - John M Ramzy
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Victoria, Australia
| | - Andrea Comella
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Victoria, Australia
| | - Abdul Rahman Ihdayhid
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Victoria, Australia
| | - James D Cameron
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Victoria, Australia
| | - Stephen J Nicholls
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Victoria, Australia
| | - Stephen P Hoole
- Department of Interventional Cardiology, Papworth Hospital NHS Foundation Trust, Cambridge, UK
| | - Adam J Brown
- Monash Cardiovascular Research Centre and MonashHeart, Monash University and Monash Health, Melbourne, Victoria, Australia
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38
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Kumar A, Sammour Y, Reginauld S, Sato K, Agrawal N, Lee JM, Meenakshisundaram C, Ramanan T, Kamioka N, Sawant AC, Mohananey D, Gleason PT, Devireddy C, Krishnaswamy A, Mavromatis K, Grubb K, Svensson LG, Tuzcu EM, Block PC, Iyer V, Babaliaros V, Kapadia S, Samady H. Adverse clinical outcomes in patients undergoing both PCI and TAVR: Analysis from a pooled multi-center registry. Catheter Cardiovasc Interv 2020; 97:529-539. [PMID: 32845036 DOI: 10.1002/ccd.29233] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 08/02/2020] [Indexed: 01/09/2023]
Abstract
BACKGROUND There is a paucity of data regarding the optimum timing of PCI in relation to TAVR. OBJECTIVE We compared the major adverse cardiovascular and cerebrovascular events (MACCE) rates among patients who underwent percutaneous coronary intervention (PCI) before transcatheter aortic valve replacement (TAVR) with those who received PCI with/after TAVR. METHODS In this multicenter study, we pooled all consecutive patients who underwent TAVR at three high volume centers. RESULTS Among 3,982 patients who underwent TAVR, 327 (8%) patients underwent PCI within 1 year before TAVR, 38 (1%) had PCI the same day as TAVR and 15 (0.5%) had PCI within 2 months after TAVR. Overall, among patients who received both PCI and TAVR (n = 380), history of previous CABG (HR:0.501; p = .001), higher BMI at TAVR (HR:0.970; p = .038), and statin therapy after TAVR (HR:0.660, p = .037) were independently associated with lower MACCE while warfarin therapy after TAVR was associated with a higher risk of MACCE (HR:1.779, p = .017). Patients who received PCI within 1 year before TAVR had similar baseline demographics, STS scores, clinical risk factors when compared to patients receiving PCI with/after TAVR. Both groups were similar in PCI (Syntax Score, ACC/AHA lesion class) and TAVR (valve types, access) related variables. There were no significant differences in terms of MACCE (log rank p = .550), all-cause mortality (log rank p = .433), strokes (log rank p = .153), and repeat PCI (log rank p = .054) in patients who underwent PCI with/after TAVR when compared to patients who received PCI before TAVR. CONCLUSION Among patients who underwent both PCI and TAVR, history of CABG, higher BMI, and statin therapy had lower, while those discharged on warfarin, had higher adverse event rates. Adverse events rates were similar regardless of timing of PCI.
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Affiliation(s)
- Arnav Kumar
- Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine, Atlanta, Georgia
| | - Yasser Sammour
- Heart and Vascular Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Shawn Reginauld
- Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine, Atlanta, Georgia
| | - Kimi Sato
- Heart and Vascular Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Nikhil Agrawal
- Department of Medicine Division of Cardiology, State University of New York at Buffalo, Buffalo, New York
| | - Joo Myung Lee
- Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine, Atlanta, Georgia
| | | | - Thammi Ramanan
- Department of Medicine Division of Cardiology, State University of New York at Buffalo, Buffalo, New York
| | - Norihiko Kamioka
- Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine, Atlanta, Georgia
| | - Abhishek C Sawant
- Department of Medicine Division of Cardiology, State University of New York at Buffalo, Buffalo, New York
| | | | - Patrick T Gleason
- Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine, Atlanta, Georgia
| | - Chandan Devireddy
- Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine, Atlanta, Georgia
| | - Amar Krishnaswamy
- Heart and Vascular Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Kreton Mavromatis
- Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine, Atlanta, Georgia
| | - Kendra Grubb
- Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine, Atlanta, Georgia
| | - Lars G Svensson
- Heart and Vascular Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - E Murat Tuzcu
- Heart and Vascular Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Peter C Block
- Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine, Atlanta, Georgia
| | - Vijay Iyer
- Department of Medicine Division of Cardiology, State University of New York at Buffalo, Buffalo, New York
| | - Vasilis Babaliaros
- Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine, Atlanta, Georgia
| | - Samir Kapadia
- Heart and Vascular Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Habib Samady
- Andreas Gruentzig Cardiovascular Center, Emory University School of Medicine, Atlanta, Georgia
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39
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Coronary Microcirculation in Aortic Stenosis: Pathophysiology, Invasive Assessment, and Future Directions. J Interv Cardiol 2020; 2020:4603169. [PMID: 32774184 PMCID: PMC7396014 DOI: 10.1155/2020/4603169] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/22/2020] [Accepted: 07/01/2020] [Indexed: 01/09/2023] Open
Abstract
With the increasing prevalence of aortic stenosis (AS) due to a growing elderly population, a proper understanding of its physiology is paramount to guide therapy and define severity. A better understanding of the microvasculature in AS could improve clinical care by predicting left ventricular remodeling or anticipate the interplay between epicardial stenosis and myocardial dysfunction. In this review, we combine five decades of literature regarding microvascular, coronary, and aortic valve physiology with emerging insights from newly developed invasive tools for quantifying microcirculatory function. Furthermore, we describe the coupling between microcirculation and epicardial stenosis, which is currently under investigation in several randomized trials enrolling subjects with concomitant AS and coronary disease. To clarify the physiology explained previously, we present two instructive cases with invasive pressure measurements quantifying coexisting valve and coronary stenoses. Finally, we pose open clinical and research questions whose answers would further expand our knowledge of microvascular dysfunction in AS. These trials were registered with NCT03042104, NCT03094143, and NCT02436655.
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Hemodynamic effects of aortic valve and heart rate on coronary perfusion. Clin Biomech (Bristol, Avon) 2020; 78:105075. [PMID: 32535477 DOI: 10.1016/j.clinbiomech.2020.105075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 04/29/2020] [Accepted: 06/04/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Reduced coronary flow reserve in aortic stenosis and after transcatheter aortic valve implantation is usually attributed to physiological factors taking place during systole, such as an increase in coronary resistance, and backward waves intensity. In this paper, we suggest an additional factor related to the diastolic hemodynamics in the aortic root. METHODS We measured left ventricle, aortic and coronary pressure and coronary perfusion in in-vitro models of healthy, aortic stenosis and an artificial valve at different heart rates and cardiac output conditions, to isolate the effect of hemodynamic factors in the aortic root during diastole. FINDINGS Our results show that during diastole, coronary perfusion depends on the pressure gradient between the aorta and the coronary inlet. This aorta-coronary pressure gradient is influenced by the hemodynamic flow field in the aortic root. The ratio between the aorta-coronary pressure gradient magnitude in stress to that under rest conditions of a healthy model is ten times higher than the same ratio in the aortic stenosis model and twice higher as compared to the artificial valve model result. The coronary flow reserve of the healthy model is correspondingly higher compared to the artificial valve and the aortic stenosis models. These results are in agreement with the clinical evidence. INTERPRETATION This study supports the hypothesis of a hemodynamic mechanism in the aortic root that increases coronary flow during rest but reduces the coronary flow reserve in aortic stenosis and artificial valve cases. The results may provide valuable insights regarding valve design.
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Mejía-Rentería H, Nombela-Franco L, Paradis JM, Lunardi M, Lee JM, Amat-Santos IJ, Veiga Fernandez G, Kalra A, Bansal EJ, de la Torre Hernandez JM, Rodés-Cabau J, Ribichini FL, Escaned J. Angiography-based quantitative flow ratio versus fractional flow reserve in patients with coronary artery disease and severe aortic stenosis. EUROINTERVENTION 2020; 16:e285-e292. [DOI: 10.4244/eij-d-19-01001] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Degenerative Severe Aortic Stenosis and Concomitant Coronary Artery Disease: What Is Changing in the Era of the “Transcatheter Revolution”? Curr Atheroscler Rep 2020; 22:17. [PMID: 32451750 DOI: 10.1007/s11883-020-0835-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Zelis JM, Tonino PAL, Johnson NP. Why Can Fractional Flow Reserve Decrease After Transcatheter Aortic Valve Implantation? J Am Heart Assoc 2020; 9:e04905. [PMID: 32102613 PMCID: PMC7335563 DOI: 10.1161/jaha.120.015806] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jo M Zelis
- Department of Cardiology Catharina Hospital Eindhoven Netherlands
| | - Pim A L Tonino
- Department of Cardiology Catharina Hospital Eindhoven Netherlands
| | - Nils P Johnson
- Division of Cardiology Department of Medicine Weatherhead PET Center McGovern Medical School at UTHealth and Memorial Hermann Hospital Houston TX
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Clarke JRD, Duarte Lau F, Zarich SW. Determining the Significance of Coronary Plaque Lesions: Physiological Stenosis Severity and Plaque Characteristics. J Clin Med 2020; 9:jcm9030665. [PMID: 32131474 PMCID: PMC7141262 DOI: 10.3390/jcm9030665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/26/2020] [Accepted: 02/26/2020] [Indexed: 01/10/2023] Open
Abstract
The evaluation of coronary lesions has evolved in recent years. Physiologic-guided revascularization (particularly with pressure-derived fractional flow reserve (FFR)) has led to superior outcomes compared to traditional angiographic assessment. A greater importance, therefore, has been placed on the functional significance of an epicardial lesion. Despite the improvements in the limitations of angiography, insights into the relationship between hemodynamic significance and plaque morphology at the lesion level has shown that determining the implications of epicardial lesions is rather complex. Investigators have sought greater understanding by correlating ischemia quantified by FFR with plaque characteristics determined on invasive and non-invasive modalities. We review the background of the use of these diagnostic tools in coronary artery disease and discuss the implications of analyzing physiological stenosis severity and plaque characteristics concurrently.
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Affiliation(s)
- John-Ross D. Clarke
- Department of Internal Medicine, Yale-New Haven Health/Bridgeport Hospital, Bridgeport, CT 06610, USA;
- Correspondence: or ; Tel.: +1-203-260-4510
| | - Freddy Duarte Lau
- Department of Internal Medicine, Yale-New Haven Health/Bridgeport Hospital, Bridgeport, CT 06610, USA;
| | - Stuart W. Zarich
- The Heart and Vascular Institute, Yale-New Haven Health/Bridgeport Hospital, Bridgeport, CT 06610, USA;
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Vendrik J, Ahmad Y, Eftekhari A, Howard JP, Wijntjens GWM, Stegehuis VE, Cook C, Terkelsen CJ, Christiansen EH, Koch KT, Piek JJ, Sen S, Baan J. Long-Term Effects of Transcatheter Aortic Valve Implantation on Coronary Hemodynamics in Patients With Concomitant Coronary Artery Disease and Severe Aortic Stenosis. J Am Heart Assoc 2020; 9:e015133. [PMID: 32102615 PMCID: PMC7335578 DOI: 10.1161/jaha.119.015133] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Background As younger patients are being considered for transcatheter aortic valve implantation (TAVI), the assessment and treatment of concomitant coronary artery disease is taking on increased importance. Methods and Results Thirteen contemporary lower-risk patients with TAVI with severe aortic stenosis (AS) and moderate-severe coronary lesions were included. Patients underwent assessment of coronary hemodynamics in the presence of severe AS (pre-TAVI), in the absence of severe AS (immediately post-TAVI), and at longer-term follow-up (6 months post-TAVI). Fractional flow reserve decreased from 0.85 (0.76-0.88) pre-TAVI to 0.79 (0.74-0.83) post-TAVI, and then to 0.71 (0.65-0.77) at 6-month follow-up (P<0.001 for all comparisons). Conversely, instantaneous wave-free ratio was not significantly different: 0.82 (0.80-0.90) pre-TAVI, 0.83 (0.77-0.88) post-TAVI, and 0.83 (0.73-0.89) at 6 months (P=0.735). These changes are explained by the underlying coronary flow. Hyperemic whole-cycle coronary flow (fractional flow reserve flow) increased from 26.36 cm/s (23.82-31.82 cm/s) pre-TAVI to 30.78 cm/s (29.70-34.68 cm/s) post-TAVI (P=0.012), to 40.20 cm/s (32.14-50.00 cm/s) at 6-month follow-up (P<0.001 for both comparisons). Resting flow during the wave-free period of diastole was not significantly different: 25.48 cm/s (21.12-33.65 cm/s) pre-TAVI, 24.54 cm/s (20.74-27.88 cm/s) post-TAVI, and 25.89 cm/s (22.57-28.96 cm/s) at 6 months (P=0.500). Conclusions TAVI acutely improves whole-cycle hyperemic coronary flow, with ongoing sustained improvements at longer-term follow-up. This enhanced response to hyperemic stimuli appears to make fractional flow reserve assessment less suitable for patients with severe AS. Conversely, resting diastolic flow is not significantly influenced by the presence of severe AS. Resting indices of coronary stenosis severity, therefore, appear to be more appropriate for this patient population, although large-scale prospective randomized trials will be required to determine the role of coronary physiology in patients with severe AS.
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Affiliation(s)
| | - Yousif Ahmad
- National Heart and Lung Institute Imperial College London London United Kingdom
| | - Ashkan Eftekhari
- Department of Cardiology Aarhus Universitetshospital Skejby Aarhus Denmark
| | - James P Howard
- National Heart and Lung Institute Imperial College London London United Kingdom
| | | | | | - Christopher Cook
- National Heart and Lung Institute Imperial College London London United Kingdom
| | | | | | - Karel T Koch
- Heart Centre Amsterdam UMC Amsterdam the Netherlands
| | - Jan J Piek
- Heart Centre Amsterdam UMC Amsterdam the Netherlands
| | - Sayan Sen
- National Heart and Lung Institute Imperial College London London United Kingdom
| | - Jan Baan
- Heart Centre Amsterdam UMC Amsterdam the Netherlands
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Ahmad Y, Vendrik J, Eftekhari A, Howard JP, Cook C, Rajkumar C, Malik I, Mikhail G, Ruparelia N, Hadjiloizou N, Nijjer S, Al-Lamee R, Petraco R, Warisawa T, Wijntjens GWM, Koch KT, van de Hoef T, de Waard G, Echavarria-Pinto M, Frame A, Sutaria N, Kanaganayagam G, Ariff B, Anderson J, Chukwuemeka A, Fertleman M, Koul S, Iglesias JF, Francis D, Mayet J, Serruys P, Davies J, Escaned J, van Royen N, Götberg M, Juhl Terkelsen C, Høj Christiansen E, Piek JJ, Baan J, Sen S. Determining the Predominant Lesion in Patients With Severe Aortic Stenosis and Coronary Stenoses: A Multicenter Study Using Intracoronary Pressure and Flow. Circ Cardiovasc Interv 2019; 12:e008263. [PMID: 31752515 PMCID: PMC6924937 DOI: 10.1161/circinterventions.119.008263] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Patients with severe aortic stenosis (AS) often have coronary artery disease. Both the aortic valve and the coronary disease influence the blood flow to the myocardium and its ability to respond to stress; leading to exertional symptoms. In this study, we aim to quantify the effect of severe AS on the coronary microcirculation and determine if this is influenced by any concomitant coronary disease. We then compare this to the effect of coronary stenoses on the coronary microcirculation.
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Affiliation(s)
- Yousif Ahmad
- National Heart and Lung Institute, Hammersmith Hospital, Imperial College London, United Kingdom (Y.A., J.P.H., C.C., C.R., R.A.-L., R.P., T.W., D.F., J.M., P.S., S.S.)
| | - Jeroen Vendrik
- Amsterdam UMC, University of Amsterdam, Heart Center, Department of Clinical and Experimental Cardiology, the Netherlands (J.V., K.T.K., T.v.d.H., J.J.P., J.B.)
| | - Ashkan Eftekhari
- Aarhus University Hospital Skejby, Denmark (A.E., C.J.T., E.H.C.)
| | - James P Howard
- National Heart and Lung Institute, Hammersmith Hospital, Imperial College London, United Kingdom (Y.A., J.P.H., C.C., C.R., R.A.-L., R.P., T.W., D.F., J.M., P.S., S.S.)
| | - Christopher Cook
- National Heart and Lung Institute, Hammersmith Hospital, Imperial College London, United Kingdom (Y.A., J.P.H., C.C., C.R., R.A.-L., R.P., T.W., D.F., J.M., P.S., S.S.)
| | - Christopher Rajkumar
- National Heart and Lung Institute, Hammersmith Hospital, Imperial College London, United Kingdom (Y.A., J.P.H., C.C., C.R., R.A.-L., R.P., T.W., D.F., J.M., P.S., S.S.)
| | - Iqbal Malik
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Ghada Mikhail
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Neil Ruparelia
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Nearchos Hadjiloizou
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Sukhjinder Nijjer
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Rasha Al-Lamee
- National Heart and Lung Institute, Hammersmith Hospital, Imperial College London, United Kingdom (Y.A., J.P.H., C.C., C.R., R.A.-L., R.P., T.W., D.F., J.M., P.S., S.S.)
| | - Ricardo Petraco
- National Heart and Lung Institute, Hammersmith Hospital, Imperial College London, United Kingdom (Y.A., J.P.H., C.C., C.R., R.A.-L., R.P., T.W., D.F., J.M., P.S., S.S.)
| | - Takayuki Warisawa
- National Heart and Lung Institute, Hammersmith Hospital, Imperial College London, United Kingdom (Y.A., J.P.H., C.C., C.R., R.A.-L., R.P., T.W., D.F., J.M., P.S., S.S.)
| | | | - Karel T Koch
- Amsterdam UMC, University of Amsterdam, Heart Center, Department of Clinical and Experimental Cardiology, the Netherlands (J.V., K.T.K., T.v.d.H., J.J.P., J.B.)
| | - Tim van de Hoef
- Amsterdam UMC, University of Amsterdam, Heart Center, Department of Clinical and Experimental Cardiology, the Netherlands (J.V., K.T.K., T.v.d.H., J.J.P., J.B.)
| | - Guus de Waard
- Department of Cardiology, VU University Medical Center, Amsterdam, the Netherlands (G.d.W., N.v.R.)
| | | | - Angela Frame
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Nilesh Sutaria
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Gajen Kanaganayagam
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Ben Ariff
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Jon Anderson
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Andrew Chukwuemeka
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Michael Fertleman
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Sasha Koul
- Department of Cardiology, Clinical Sciences, Lund University, Skåne University Hospital, Sweden (S.K., M.G.)
| | - Juan F Iglesias
- Cardiology Department, Lausanne University Hospital, Switzerland (J.F.I.)
| | - Darrel Francis
- National Heart and Lung Institute, Hammersmith Hospital, Imperial College London, United Kingdom (Y.A., J.P.H., C.C., C.R., R.A.-L., R.P., T.W., D.F., J.M., P.S., S.S.)
| | - Jamil Mayet
- National Heart and Lung Institute, Hammersmith Hospital, Imperial College London, United Kingdom (Y.A., J.P.H., C.C., C.R., R.A.-L., R.P., T.W., D.F., J.M., P.S., S.S.)
| | - Patrick Serruys
- National Heart and Lung Institute, Hammersmith Hospital, Imperial College London, United Kingdom (Y.A., J.P.H., C.C., C.R., R.A.-L., R.P., T.W., D.F., J.M., P.S., S.S.)
| | - Justin Davies
- Department of Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom (I.M., G.M., N.R., N.H., S.N., A.F., N.S., G.K., B.A., J.A., A.C., M.F., J.D.)
| | - Javier Escaned
- Hospital Clínico San Carlos, Madrid, Spain (M.E.-P., J.E.)
| | - Niels van Royen
- Department of Cardiology, VU University Medical Center, Amsterdam, the Netherlands (G.d.W., N.v.R.)
| | - Matthias Götberg
- Department of Cardiology, Clinical Sciences, Lund University, Skåne University Hospital, Sweden (S.K., M.G.)
| | | | | | - Jan J Piek
- Amsterdam UMC, University of Amsterdam, Heart Center, Department of Clinical and Experimental Cardiology, the Netherlands (J.V., K.T.K., T.v.d.H., J.J.P., J.B.)
| | - Jan Baan
- Amsterdam UMC, University of Amsterdam, Heart Center, Department of Clinical and Experimental Cardiology, the Netherlands (J.V., K.T.K., T.v.d.H., J.J.P., J.B.)
| | - Sayan Sen
- National Heart and Lung Institute, Hammersmith Hospital, Imperial College London, United Kingdom (Y.A., J.P.H., C.C., C.R., R.A.-L., R.P., T.W., D.F., J.M., P.S., S.S.)
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Lunardi M, Scarsini R, Venturi G, Pesarini G, Pighi M, Gratta A, Gottin L, Barbierato M, Caprioglio F, Piccoli A, Ferrero V, Ribichini F. Physiological Versus Angiographic Guidance for Myocardial Revascularization in Patients Undergoing Transcatheter Aortic Valve Implantation. J Am Heart Assoc 2019; 8:e012618. [PMID: 31718439 PMCID: PMC6915256 DOI: 10.1161/jaha.119.012618] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 08/19/2019] [Indexed: 12/23/2022]
Abstract
Background Management of coronary artery disease in patients undergoing transcatheter aortic valve implantation is uncertain. Fractional flow reserve (FFR) has never been clinically validated in aortic stenosis. The study aim was to analyze the clinical outcome of FFR-guided revascularization in patients undergoing transcatheter aortic valve implantation. Methods and Results Patients with severe aortic stenosis and coronary artery disease at coronary angiography were included in this retrospective analysis and divided in 2 groups: angiography guided (122/216; 56.5%) versus FFR-guided revascularization (94/216; 43.5%). Patients were clinically followed up and evaluated for the occurrence of major adverse cardiac and cerebrovascular events at 2-year follow-up. Most lesions in the FFR group resulted negative according to the conventional 0.80 cutoff value (111/142; 78.2%) and were deferred. The FFR-guided group showed a better major adverse cardiac and cerebrovascular event-free survival compared with the angio-guided group (92.6% versus 82.0%; hazard ratio, 0.4; 95% CI, 0.2-1.0; P=0.035). Patients with deferred lesions based on FFR presented better outcome compared with patients who underwent angio-guided percutaneous coronary intervention (91.4% versus 68.1%; hazard ratio, 0.3; 95% CI, 0.1-0.6; P=0.001). Conclusions FFR guidance was associated with favorable outcome in this observational study in patients undergoing transcatheter aortic valve implantation. Randomized trials are needed to investigate the long-term effects of FFR-guided revascularization against angiographic guidance alone in patients with aortic stenosis.
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Affiliation(s)
- Mattia Lunardi
- Division of CardiologyDepartment of MedicineUniversity of VeronaItaly
| | - Roberto Scarsini
- Division of CardiologyDepartment of MedicineUniversity of VeronaItaly
| | - Gabriele Venturi
- Division of CardiologyDepartment of MedicineUniversity of VeronaItaly
| | - Gabriele Pesarini
- Division of CardiologyDepartment of MedicineUniversity of VeronaItaly
| | - Michele Pighi
- Division of CardiologyDepartment of MedicineUniversity of VeronaItaly
| | - Andrea Gratta
- Division of CardiologyDepartment of MedicineUniversity of VeronaItaly
| | - Leonardo Gottin
- Division of AnaesthesiologyDepartment of SurgeryUniversity of VeronaItaly
| | | | | | - Anna Piccoli
- Division of CardiologyDepartment of MedicineUniversity of VeronaItaly
| | - Valeria Ferrero
- Division of CardiologyDepartment of MedicineUniversity of VeronaItaly
| | - Flavio Ribichini
- Division of CardiologyDepartment of MedicineUniversity of VeronaItaly
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Fractional flow reserve in patients with coronary artery disease undergoing TAVI: a prospective analysis. Clin Res Cardiol 2019; 109:746-754. [PMID: 31679046 DOI: 10.1007/s00392-019-01563-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Accepted: 10/17/2019] [Indexed: 01/09/2023]
Abstract
OBJECTIVES To determine the true prevalence of CAD in AS patients, to detect changes of the hemodynamic significance of coronary lesions following TAVI, to explore to what extent FFR-positive CAD might influence outcome and finally to develop a management algorithm for this patient subset. METHODS From May 2016 to March 2018, diagnostic coronary angiography was performed in 246 patients before TAVI. In the presence of coronary lesions with a diameter stenosis ≥ 50%, FFR was measured. In patients with positive FFR ≤ 0.80, a control angiography was performed 6-8 weeks after TAVI. RESULTS The study cohort was 81.0 ± 6.1 years old, 48.4% of the patients were male. 53.3% had concomitant CAD. 35.9% of these patients underwent PCI before TAVI due to functionally significant left main CAD and/or severe stenosis ≥ 90%. 31 patients underwent FFR measurements in cumulative 38 coronary lesions. Prior to TAVI, a negative FFR could be detected in 18 lesions, whereas a positive FFR was found in entirely 20 lesions. A control angiography and FFR measurement was performed in cumulative 13 lesions. Comparing the FFR values, there was no significant difference (0.77 ± 0.04 vs. 0.76 ± 0.08; p = 0.11). CONCLUSION Concomitant CAD was diagnosed in 53.3% of TAVI patients. FFR did not significantly change after TAVI, confirming the validity of FFR to evaluate coronary lesions in this specific clinical setting. Given the low rates of cardiac adverse events, it might therefore be considered to treat coronary stenoses not involving left main and those with a diameter stenosis < 90% after TAVI.
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Abstract
Regulation of coronary blood flow is maintained through a delicate balance of ventriculoarterial and neurohumoral mechanisms. The aortic valve is integral to the functions of these systems, and disease states that compromise aortic valve integrity have the potential to seriously disrupt coronary blood flow. Aortic stenosis (AS) is the most common cause of valvular heart disease requiring medical intervention, and the prevalence and associated socio-economic burden of AS are set to increase with population ageing. Valvular stenosis precipitates a cascade of structural, microcirculatory, and neurohumoral changes, which all lead to impairment of coronary flow reserve and myocardial ischaemia even in the absence of notable coronary stenosis. Coronary physiology can potentially be normalized through interventions that relieve severe AS, but normality is often not immediately achievable and probably requires continued adaptation. Finally, the physiological assessment of coronary artery disease in patients with AS represents an ongoing challenge, as the invasive physiological measures used in current cardiology practice are yet to be validated in this population. This Review discusses the key concepts of coronary pathophysiology in patients with AS through presentation of contemporary basic science and data from animal and human studies.
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Abstract
Aortic stenosis is a heterogeneous disorder. Variations in the pathological and physiological responses to pressure overload are incompletely understood and generate a range of flow and pressure gradient patterns, which ultimately cause varying microvascular effects. The impact of cardiac-coronary coupling depends on these pressure and flow effects. In this article, we explore important concepts concerning cardiac physiology and the coronary microcirculation in aortic stenosis and their impact on myocardial remodeling, aortic valve flow patterns, and clinical progression.
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Affiliation(s)
- Hannah Z.R. McConkey
- Cardiovascular Division, King’s College London British Heart Foundation Centre of Excellence, The Rayne Institute, St. Thomas’ Hospital Campus, London, United Kingdom (H.Z.R.M., M.M., A.C., S.R.R., B.D.P.)
| | - Michael Marber
- Cardiovascular Division, King’s College London British Heart Foundation Centre of Excellence, The Rayne Institute, St. Thomas’ Hospital Campus, London, United Kingdom (H.Z.R.M., M.M., A.C., S.R.R., B.D.P.)
| | - Amedeo Chiribiri
- Cardiovascular Division, King’s College London British Heart Foundation Centre of Excellence, The Rayne Institute, St. Thomas’ Hospital Campus, London, United Kingdom (H.Z.R.M., M.M., A.C., S.R.R., B.D.P.)
| | - Philippe Pibarot
- Department of Medicine, Institut Universitaire de Cardiologie et de Pneumologie de Québec/Québec Heart and Lung Institute, Laval University, Québec, Canada (P.P.)
| | - Simon R. Redwood
- Cardiovascular Division, King’s College London British Heart Foundation Centre of Excellence, The Rayne Institute, St. Thomas’ Hospital Campus, London, United Kingdom (H.Z.R.M., M.M., A.C., S.R.R., B.D.P.)
| | - Bernard D. Prendergast
- Cardiovascular Division, King’s College London British Heart Foundation Centre of Excellence, The Rayne Institute, St. Thomas’ Hospital Campus, London, United Kingdom (H.Z.R.M., M.M., A.C., S.R.R., B.D.P.)
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