1
|
Chen W, Nie J, Zhang M, Zhu Z, Zhou Y, Wu Q, He X. The Plaque Analysis Classifies the Coronary Artery Disease-Reporting and Data System (CAD-RADS) Stenosis and Plaque Burden Categories: Association of the Plaque Features, Fat Attenuation Index, Coronary Computed Tomography Fractional Flow Reserve, and the Combination of Stenosis and Calcification. Clin Cardiol 2024; 47:e24305. [PMID: 38884449 PMCID: PMC11181293 DOI: 10.1002/clc.24305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 05/20/2024] [Accepted: 05/30/2024] [Indexed: 06/18/2024] Open
Abstract
BACKGROUND The coronary artery disease-reporting and data system (CAD-RADS) 2.0 is used to standardize the reporting of coronary computed tomography angiography (CCTA) results. Artificial intelligence software can quantify the plaque composition, fat attenuation index, and fractional flow reserve. OBJECTIVE To analyze plaque features of varying severity in patients with a combination of CAD-RADS stenosis and plaque burden categorization and establish a random forest classification model. METHODS The data of 100 patients treated between April 2021 and February 2022 were retrospectively collected. The most severe plaque observed in each patient was the target lesion. Patients were categorized into three groups according to CAD-RADS: CAD-RADS 1-2 + P0-2, CAD-RADS 3-4B + P0-2, and CAD-RADS 3-4B + P3-4. Differences and correlations between variables were assessed between groups. AUC, accuracy, precision, recall, and F1 score were used to evaluate the diagnostic performance. RESULTS A total of 100 patients and 178 arteries were included. The differences of computed tomography fractional flow reserve (CT-FFR) (H = 23.921, p < 0.001), the volume of lipid component (H = 12.996, p = 0.002), the volume of fibro-lipid component (H = 8.692, p = 0.013), the proportion of lipid component volume (H = 22.038, p < 0.001), the proportion of fibro-lipid component volume (H = 11.731, p = 0.003), the proportion of calcification component volume (H = 11.049, p = 0.004), and plaque type (χ2 = 18.110, p = 0.001) was statistically significant. CONCLUSION CT-FFR, volume and proportion of lipid and fibro-lipid components of plaques, the proportion of calcified components, and plaque type were valuable for CAD-RADS stenosis + plaque burden classification, especially CT-FFR, volume, and proportion of lipid and fibro-lipid components. The model built using the random forest was better than the clinical model (AUC: 0.874 vs. 0.647).
Collapse
Affiliation(s)
- Wenxi Chen
- Graduate SchoolGuangzhou University of Chinese MedicineGuangzhouChina
| | - Jiyan Nie
- Graduate SchoolGuangzhou University of Chinese MedicineGuangzhouChina
| | - Mingyu Zhang
- Graduate SchoolGuangzhou University of Chinese MedicineGuangzhouChina
| | - Zhi Zhu
- Graduate SchoolGuangzhou University of Chinese MedicineGuangzhouChina
- Department of RadiologyShunde Hospital of Guangzhou University of Chinese MedicineShundeChina
| | - Yuanyong Zhou
- Department of RadiologyShunde Hospital of Guangzhou University of Chinese MedicineShundeChina
| | - Qingde Wu
- Department of RadiologyShunde Hospital of Guangzhou University of Chinese MedicineShundeChina
| | - Xuxia He
- Department of RadiologyShunde Hospital of Guangzhou University of Chinese MedicineShundeChina
| |
Collapse
|
2
|
Baruś P, Hunia J, Kaczorowski R, Bednarek A, Ochijewicz D, Gumiężna K, Kołtowski Ł, Kochman J, Grabowski M, Tomaniak M. Renal Dysfunction Increases Risk of Adverse Cardiovascular Events in 5-Year Follow-Up Study of Intermediate Coronary Artery Lesions. Med Sci Monit 2024; 30:e943956. [PMID: 38720443 DOI: 10.12659/msm.943956] [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: 05/16/2024] Open
Abstract
BACKGROUND Progression of chronic coronary syndrome (CCS) is influenced by chronic kidney disease (CKD). This 5-year follow-up study aimed to assess 100 patients with 118 intermediate coronary artery lesions evaluated by fractional flow reserve (FFR) and intravascular imaging stratified according to renal function. MATERIAL AND METHODS This prospective study enrolled patients with intermediate coronary stenosis identified by coronary angiogram. Patients with severe renal dysfunction (estimated glomerular filtration rate (eGFR) <45 ml/min/1.73 m²) were excluded from the study. The remaining were divided into 2 groups according to eGFR: 45-60 ml/min/1.73 m² for mild-to-moderate renal dysfunction and >60 ml/min/1.73 m² for no renal dysfunction. We analyzed intermediate-grade stenoses (40-80% as assessed in coronary angiography) with the use of optical coherence tomography (OCT), FFR, and intravascular ultrasound (IVUS). RESULTS Renal dysfunction patients were older (67.7±8.1 vs 63.6±9.7 years, P=0.044). Lesion characteristics, including plaque type and minimal lumen area in OCT, showed no significant differences between the renal dysfunction and no renal dysfunction groups. Thin-cap fibroatheroma, calcific plaques, lipidic plaques, and fibrous plaques had similar prevalence. FFR values and IVUS parameters did not significantly differ between the groups. Over a 5-year follow-up, individuals with mild-to-moderate renal dysfunction had an elevated risk of all-cause mortality and major adverse cardiovascular events in multivariate analyses adjusted for age and sex. CONCLUSIONS Mild-to-moderate renal dysfunction was not associated with significant differences in OCT- and IVUS-derived plaque morphology nor with functional indices characterizing intermediate-grade coronary stenoses. Renal dysfunction was related to a higher risk of all-cause mortality and major adverse cardiovascular events prevalence in 5-year follow-up.
Collapse
Affiliation(s)
- Piotr Baruś
- First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Jaromir Hunia
- First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Rafał Kaczorowski
- First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Adrian Bednarek
- First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Dorota Ochijewicz
- First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Karolina Gumiężna
- First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Łukasz Kołtowski
- First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Janusz Kochman
- First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Marcin Grabowski
- First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Mariusz Tomaniak
- First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| |
Collapse
|
3
|
Improta R, Di Pietro G, Giansanti M, Bruno F, De Filippo O, Tocci M, Colantonio R, Sardella G, D’Ascenzo F, Mancone M. Comparison between Imaging and Physiology in Guiding Coronary Revascularization: A Meta-Analysis. J Clin Med 2024; 13:2504. [PMID: 38731033 PMCID: PMC11084876 DOI: 10.3390/jcm13092504] [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: 04/02/2024] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Background: Percutaneous coronary intervention (PCI) is a widely used revascularization strategy for coronary artery disease. The choice between imaging-guided and physiology-guided PCI has been a subject of debate. This meta-analysis aims to systematically compare outcomes between imaging and physiology-guided PCI and management of intermediate coronary lesions (ICLs). Methods: A comprehensive literature search was conducted across major databases for studies published up to December 2023 following PRISMA guidelines. Seven eligible studies comparing imaging-guided and physiology-guided PCI were selected for the final analysis. Relevant outcome measures included major adverse cardiovascular events (MACE), target vessel revascularization (TVR), target vessel failure (TVF), and target lesion revascularization (TLR). Subgroup analysis was performed for ICLs. Results: A total of 5701 patients were included in the meta-analysis. After a mean follow-up of 2.1 years, imaging-guided PCI was associated with lower rates of TVR compared to physiology-guided PCI (OR 0.70, 95% CI 0.52-0.95, p = 0.02); concerning MACE, TVF, and TLR, no differences were found. When the analysis was restricted to studies considering ICLs management, there were no differences between the two techniques. Meta regression analysis did not show any impact of acute coronary syndromes (ACS) presentation on MACE and TVR. Conclusions: The findings suggest that imaging-guided PCI may reduce the need for future revascularization of the target vessel compared to the functional-guided approach, and this result was not influenced by ACS presentation. These results may have important implications for clinical practice, guiding interventional cardiologists in selecting the most appropriate guidance strategy.
Collapse
Affiliation(s)
- Riccardo Improta
- Department of Clinical, Internal, Anesthesiology and Cardiovascular Sciences, Umberto I Hospital, Sapienza University of Rome, Viale del Policlinico 155 (Emodinamica A, Ottavo Padiglione, II Piano), 00161 Rome, Italy; (R.I.); (G.D.P.); (M.T.); (R.C.); (G.S.)
| | - Gianluca Di Pietro
- Department of Clinical, Internal, Anesthesiology and Cardiovascular Sciences, Umberto I Hospital, Sapienza University of Rome, Viale del Policlinico 155 (Emodinamica A, Ottavo Padiglione, II Piano), 00161 Rome, Italy; (R.I.); (G.D.P.); (M.T.); (R.C.); (G.S.)
| | - Michele Giansanti
- Department of Clinical, Internal, Anesthesiology and Cardiovascular Sciences, Umberto I Hospital, Sapienza University of Rome, Viale del Policlinico 155 (Emodinamica A, Ottavo Padiglione, II Piano), 00161 Rome, Italy; (R.I.); (G.D.P.); (M.T.); (R.C.); (G.S.)
| | - Francesco Bruno
- Department of Medical Science, Division of Cardiology, Molinette Hospital, Turin University, 10124 Turin, Italy; (F.B.); (O.D.F.); (F.D.)
| | - Ovidio De Filippo
- Department of Medical Science, Division of Cardiology, Molinette Hospital, Turin University, 10124 Turin, Italy; (F.B.); (O.D.F.); (F.D.)
| | - Marco Tocci
- Department of Clinical, Internal, Anesthesiology and Cardiovascular Sciences, Umberto I Hospital, Sapienza University of Rome, Viale del Policlinico 155 (Emodinamica A, Ottavo Padiglione, II Piano), 00161 Rome, Italy; (R.I.); (G.D.P.); (M.T.); (R.C.); (G.S.)
| | - Riccardo Colantonio
- Department of Clinical, Internal, Anesthesiology and Cardiovascular Sciences, Umberto I Hospital, Sapienza University of Rome, Viale del Policlinico 155 (Emodinamica A, Ottavo Padiglione, II Piano), 00161 Rome, Italy; (R.I.); (G.D.P.); (M.T.); (R.C.); (G.S.)
| | - Gennaro Sardella
- Department of Clinical, Internal, Anesthesiology and Cardiovascular Sciences, Umberto I Hospital, Sapienza University of Rome, Viale del Policlinico 155 (Emodinamica A, Ottavo Padiglione, II Piano), 00161 Rome, Italy; (R.I.); (G.D.P.); (M.T.); (R.C.); (G.S.)
| | - Fabrizio D’Ascenzo
- Department of Medical Science, Division of Cardiology, Molinette Hospital, Turin University, 10124 Turin, Italy; (F.B.); (O.D.F.); (F.D.)
| | - Massimo Mancone
- Department of Clinical, Internal, Anesthesiology and Cardiovascular Sciences, Umberto I Hospital, Sapienza University of Rome, Viale del Policlinico 155 (Emodinamica A, Ottavo Padiglione, II Piano), 00161 Rome, Italy; (R.I.); (G.D.P.); (M.T.); (R.C.); (G.S.)
| |
Collapse
|
4
|
Ekmejian A, Howden N, Eipper A, Allahwala U, Ward M, Bhindi R. Association between vessel-specific coronary Aggregated plaque burden, Agatston score and hemodynamic significance of coronary disease (The CAPTivAte study). IJC HEART & VASCULATURE 2024; 51:101384. [PMID: 38496257 PMCID: PMC10940135 DOI: 10.1016/j.ijcha.2024.101384] [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: 11/25/2023] [Revised: 02/28/2024] [Accepted: 03/06/2024] [Indexed: 03/19/2024]
Abstract
Background CT coronary angiography (CTCA) is a guideline-endorsed assessment for patients with stable angina and suspected coronary disease. Although associated with excellent negative predictive value in ruling out obstructive coronary disease, there are limitations in the ability of CTCA to predict hemodynamically significant coronary disease. The CAPTivAte study aims to assess the utility of Aggregated Plaque Burden (APB) in predicting ischemia based on Fractional Flow Reserve (FFR). Methods In this retrospective study, patients who had a CTCA and invasive FFR of the LAD were included. The entire length of the LAD was analyzed using semi-automated software which characterized total plaque burden and plaque morphological subtype (including Low Attenuation Plaque (LAP), Non-calcific plaque (NCP) and Calcific Plaque (CP). Aggregated Plaque Burden (APB) was calculated. Univariate and multivariate analysis were performed to assess the association between these CT-derived parameters and invasive FFR. Results There were 145 patients included in this study. 84.8 % of patients were referred with stable angina. There was a significant linear association between APB and FFR in both univariate and multivariate analysis (Adjusted R-squared = 0.0469; p = 0.035). Mean Agatston scores are higher in FFR positive vessels compared to FFR negative vessels (371.6 (±443.8) vs 251.9 (±283.5, p = 0.0493). Conclusion CTCA-derived APB is a reliable predictor of ischemia assessed using invasive FFR and may aid clinicians in rationalizing invasive vs non-invasive management strategies. Vessel-specific Agatston scores are significantly higher in FFR-positive vessels than in FFR-negative vessels. Associations between HU-derived plaque subtype and invasive FFR were inconclusive in this study.
Collapse
Affiliation(s)
- Avedis Ekmejian
- Royal North Shore Hospital, Australia
- North Shore Private Hospital, Australia
- University of Sydney Northern Clinical School, Australia
| | - Nicklas Howden
- Royal North Shore Hospital, Australia
- North Shore Private Hospital, Australia
| | | | - Usaid Allahwala
- Royal North Shore Hospital, Australia
- North Shore Private Hospital, Australia
- University of Sydney Northern Clinical School, Australia
| | - Michael Ward
- Royal North Shore Hospital, Australia
- North Shore Private Hospital, Australia
- University of Sydney Northern Clinical School, Australia
| | - Ravinay Bhindi
- Royal North Shore Hospital, Australia
- North Shore Private Hospital, Australia
- University of Sydney Northern Clinical School, Australia
| |
Collapse
|
5
|
Tache IA, Hatfaludi CA, Puiu A, Itu LM, Popa-Fotea NM, Calmac L, Scafa-Udriste A. Assessment of the functional severity of coronary lesions from optical coherence tomography based on ensembled learning. Biomed Eng Online 2023; 22:127. [PMID: 38104144 PMCID: PMC10724936 DOI: 10.1186/s12938-023-01192-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 12/07/2023] [Indexed: 12/19/2023] Open
Abstract
BACKGROUND Atherosclerosis is one of the most frequent cardiovascular diseases. The dilemma faced by physicians is whether to treat or postpone the revascularization of lesions that fall within the intermediate range given by an invasive fractional flow reserve (FFR) measurement. The paper presents a monocentric study for lesions significance assessment that can potentially cause ischemia on the large coronary arteries. METHODS A new dataset is acquired, comprising the optical coherence tomography (OCT) images, clinical parameters, echocardiography and FFR measurements collected from 80 patients with 102 lesions, with stable multivessel coronary artery disease. Having the ground truth given by the invasive FFR measurement, the dataset is challenging because almost 40% of the lesions are in the gray zone, having an FFR value between 0.75 and 0.85. Twenty-six features are extracted from OCT images, clinical characteristics, and echocardiography and the most relevant are identified by examining the models' accuracy. An ensembled learning is performed for solving the binary classification problem of lesion significance considering the leave-one-out cross-validation approach. RESULTS Ensemble models are designed from the multi-features voting from 5 features models by prediction aggregation with a maximum accuracy of 81.37% and a maximum area under the curve score (AUC) of 0.856. CONCLUSIONS The proposed explainable supervised learning-based lesion classification is a new method that can be improved by training with a larger multicenter dataset for further designing a tool for guiding the decision making of the clinician for the cases outside the gray zone and for the other situation extra clinical information about the lesion is needed.
Collapse
Affiliation(s)
- Irina-Andra Tache
- Department of Automatic Control and Systems Engineering, University Politehnica of Bucharest, Bucharest, Romania.
- Siemens Advanta SRL, 15 Noiembrie Bvd, 500097, Brasov, Romania.
- Romanian Academy of Scientists, Bucharest, Romania.
| | - Cosmin-Andrei Hatfaludi
- Siemens Advanta SRL, 15 Noiembrie Bvd, 500097, Brasov, Romania
- Department of Automation and Information Technology, Transilvania University of Brasov, Mihai Viteazu Nr. 5, 5000174, Brasov, Romania
| | - Andrei Puiu
- Siemens Advanta SRL, 15 Noiembrie Bvd, 500097, Brasov, Romania
- Department of Automation and Information Technology, Transilvania University of Brasov, Mihai Viteazu Nr. 5, 5000174, Brasov, Romania
| | - Lucian Mihai Itu
- Siemens Advanta SRL, 15 Noiembrie Bvd, 500097, Brasov, Romania
- Department of Automation and Information Technology, Transilvania University of Brasov, Mihai Viteazu Nr. 5, 5000174, Brasov, Romania
- Romanian Academy of Scientists, Bucharest, Romania
| | - Nicoleta-Monica Popa-Fotea
- Department of Cardiology, Emergency Clinical Hospital, 8 Calea Floreasca, 014461, Bucharest, Romania
- Department Cardio-Thoracic, University of Medicine and Pharmacy "Carol Davila", 8 Eroii Sanitari, 050474, Bucharest, Romania
| | - Lucian Calmac
- Department of Cardiology, Emergency Clinical Hospital, 8 Calea Floreasca, 014461, Bucharest, Romania
- Department Cardio-Thoracic, University of Medicine and Pharmacy "Carol Davila", 8 Eroii Sanitari, 050474, Bucharest, Romania
| | - Alexandru Scafa-Udriste
- Department of Cardiology, Emergency Clinical Hospital, 8 Calea Floreasca, 014461, Bucharest, Romania
- Department Cardio-Thoracic, University of Medicine and Pharmacy "Carol Davila", 8 Eroii Sanitari, 050474, Bucharest, Romania
| |
Collapse
|
6
|
Baruś P, Piasecki A, Gumiężna K, Bednarek A, Dunaj P, Głód M, Sadowski K, Ochijewicz D, Rdzanek A, Pietrasik A, Grabowski M, Kochman J, Tomaniak M. Multimodality OCT, IVUS and FFR evaluation of coronary intermediate grade lesions in women vs. men. Front Cardiovasc Med 2023; 10:1021023. [PMID: 37424919 PMCID: PMC10325624 DOI: 10.3389/fcvm.2023.1021023] [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: 08/16/2022] [Accepted: 05/31/2023] [Indexed: 07/11/2023] Open
Abstract
Background The pathophysiology of atherosclerotic plaque formation and its vulnerability seem to differ between genders due to contrasting risk profiles and sex hormones, however this process is still insufficiently understood. The aim of the study was to compare the differences between sexes regarding the optical coherence tomography (OCT), intravascular ultrasound (IVUS) and fractional flow reserve (FFR)-derived coronary plaque indices. Methods In this single-center multimodality imaging study patients with intermediate grade coronary stenoses identified in coronary angiogram (CAG) were evaluated using OCT, IVUS and FFR. Stenoses were considered significant when the FFR value was ≤0.8. Minimal lumen area (MLA), was analyzed by OCT in addition to plaque stratification into fibrotic, calcific, lipidic and thin-cap fibroatheroma (TCFA). IVUS was used for evaluation of lumen-, plaque- and vessel volume, as well as plaque burden. Results A total of 112 patients (88 men and 24 women) with chronic coronary syndromes (CCS), who underwent CAG were enrolled. No significant differences in baseline characteristics were present between the study groups. The mean FFR was 0.76 (0.73-0.86) in women and 0.78 ± 0.12 in men (p = 0.695). OCT evaluation showed a higher prevalence of calcific plaques among women than men p = 0.002 whereas lipid plaques were more frequent in men (p = 0.04). No significant differences regarding minimal lumen diameter and minimal lumen area were found between the sexes. In IVUS analysis women presented with significantly smaller vessel area, plaque area, plaque volume, vessel volume (11.1 ± 3.3 mm2 vs. 15.0 ± 4.6 mm2 p = 0.001, 6.04 ± 1.7 mm2 vs. 9.24 ± 2.89 mm2 p < 0.001, 59.8 ± 35.2 mm3 vs. 96.3 (52.5-159.1) mm3 p = 0.005, 106.9 ± 59.8 mm3 vs. 153.3 (103-253.4) mm3 p = 0.015 respectively). At MLA site plaque burden was significantly greater for men than women (61.50 ± 7.7% vs. 55.5 ± 8.0% p = 0.005). Survival did not differ significantly between women and men (94.6 ± 41.9 months and 103.51 ± 36.7 months respectively; p = 0.187). Conclusion The presented study did not demonstrate significant differences in FFR values between women and men, yet a higher prevalence of calcific plaques by OCT and lower plaque burden at the MLA site by IVUS was found in women vs. men.
Collapse
|
7
|
Starczyński M, Dudek S, Baruś P, Niedzieska E, Wawrzeńczyk M, Ochijewicz D, Piasecki A, Gumiężna K, Milewski K, Grabowski M, Kochman J, Tomaniak M. Intravascular Imaging versus Physiological Assessment versus Biomechanics-Which Is a Better Guide for Coronary Revascularization. Diagnostics (Basel) 2023; 13:2117. [PMID: 37371012 DOI: 10.3390/diagnostics13122117] [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: 05/21/2022] [Revised: 10/23/2022] [Accepted: 10/26/2022] [Indexed: 06/29/2023] Open
Abstract
Today, coronary artery disease (CAD) continues to be a prominent cause of death worldwide. A reliable assessment of coronary stenosis represents a prerequisite for the appropriate management of CAD. Nevertheless, there are still major challenges pertaining to some limitations of current imaging and functional diagnostic modalities. The present review summarizes the current data on invasive functional and intracoronary imaging assessment using optical coherence tomography (OCT), and intravascular ultrasound (IVUS). Amongst the functional parameters-on top of fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR)-we point to novel angiography-based measures such as quantitative flow ratio (QFR), vessel fractional flow reserve (vFFR), angiography-derived fractional flow reserve (FFRangio), and computed tomography-derived flow fractional reserve (FFR-CT), as well as hybrid approaches focusing on optical flow ratio (OFR), computational fluid dynamics and attempts to quantify the forces exaggerated by blood on the coronary plaque and vessel wall.
Collapse
Affiliation(s)
- Miłosz Starczyński
- First Department of Cardiology, Medical University of Warsaw, Banacha 1a Str., 02-097 Warsaw, Poland
| | - Stanisław Dudek
- First Department of Cardiology, Medical University of Warsaw, Banacha 1a Str., 02-097 Warsaw, Poland
| | - Piotr Baruś
- First Department of Cardiology, Medical University of Warsaw, Banacha 1a Str., 02-097 Warsaw, Poland
| | - Emilia Niedzieska
- First Department of Cardiology, Medical University of Warsaw, Banacha 1a Str., 02-097 Warsaw, Poland
| | - Mateusz Wawrzeńczyk
- First Department of Cardiology, Medical University of Warsaw, Banacha 1a Str., 02-097 Warsaw, Poland
| | - Dorota Ochijewicz
- First Department of Cardiology, Medical University of Warsaw, Banacha 1a Str., 02-097 Warsaw, Poland
| | - Adam Piasecki
- First Department of Cardiology, Medical University of Warsaw, Banacha 1a Str., 02-097 Warsaw, Poland
| | - Karolina Gumiężna
- First Department of Cardiology, Medical University of Warsaw, Banacha 1a Str., 02-097 Warsaw, Poland
| | - Krzysztof Milewski
- Center for Cardiovascular Research and Development, American Heart of Poland, 43-316 Bielsko-Biała, Poland
| | - Marcin Grabowski
- First Department of Cardiology, Medical University of Warsaw, Banacha 1a Str., 02-097 Warsaw, Poland
| | - Janusz Kochman
- First Department of Cardiology, Medical University of Warsaw, Banacha 1a Str., 02-097 Warsaw, Poland
| | - Mariusz Tomaniak
- First Department of Cardiology, Medical University of Warsaw, Banacha 1a Str., 02-097 Warsaw, Poland
| |
Collapse
|
8
|
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.
Collapse
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
| |
Collapse
|
9
|
Characterizing and Optimizing Piezoelectric Response of ZnO Nanowire/PMMA Composite-Based Sensor. NANOMATERIALS 2021; 11:nano11071712. [PMID: 34209678 PMCID: PMC8305847 DOI: 10.3390/nano11071712] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/16/2021] [Accepted: 06/25/2021] [Indexed: 11/27/2022]
Abstract
Due to the outstanding coupling between piezoelectric and semiconducting properties of zinc oxide nanowires, ZnO NW-based structures have been demonstrating promising potential with respect to their applicability in piezoelectric, piezotronic and piezo-phototronic devices. Particularly considering their biocompatibility and biosafety for applications regarding implantable medical detection, this paper proposed a new concept of piezoelectric composite, i.e., one consisting of vertically aligned ZnO NW arrays and an insulating polymer matrix. First, the finite element method (FEM) was employed to drive optimization strategies through adjustment of the key parameters such as Young’s modules and the dielectric constant of the dielectric constituents, together with the density and dimension of nanowire (NW) itself. Second, to investigate the functionality of each individual layer of composite, different designed structures were fabricated and characterized in terms of electrical and piezoelectric properties. Next, experimental and simulation tests were performed, indicating that the decreasing thickness of the top poly(methyl methacrylate) layer (PMMA) can substantially enhance the piezoelectric sensitivity of the ZnO NW composite. Besides the further benefit of no polarization being needed, our material has a comparable charge coefficient (d33) with respect to other lead-free alternatives (e.g., BaTiO3), confirming the high sensing abilities of the developed structure based on vertically aligned ZnO NW arrays. Finally, a time-varying model combining piezoelectricity and electric circuit modules was investigated in detail, giving rise to an estimation of the d33 coefficient for ZnO NWs. Based on this study, the developed material is revealed to be highly promising in medical applications, particularly regarding the FFR technique, where coronary pressure can be measured through a piezoelectric sensor.
Collapse
|