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Hou Y, Zhou H, Li Y, Mao T, Luo J, Yang J. Hemodynamic Force Based on Cardiac Magnetic Resonance Imaging: State of the Art and Perspective. J Magn Reson Imaging 2024. [PMID: 38958118 DOI: 10.1002/jmri.29483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 05/27/2024] [Accepted: 05/29/2024] [Indexed: 07/04/2024] Open
Abstract
Intracardiac blood flow has long been proposed to play a significant role in cardiac morphology and function. However, absolute blood pressure within the heart has mainly been measured by invasive catheterization, which limits its application. Hemodynamic force (HDF) is the global force of intracavitary blood flow acquired by integrating the intraventricular pressure gradient over the entire ventricle and thus may be a promising tool for accurately characterizing cardiac function. Recent advances in magnetic resonance imaging technology allow for a noninvasive measurement of HDF through both 4D flow cardiac MRI and cine cardiac MRI. The HDF time curve provides comprehensive data for both qualitative and quantitative analysis. In this review, a series of HDF parameters is introduced and a summary of the current literature regarding HDF in clinical practice is presented. Additionally, the current dilemmas and future prospects are discussed in order to contribute to the future research. LEVEL OF EVIDENCE: 5. TECHNICAL EFFICACY: Stage 2.
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Affiliation(s)
- Yangzhen Hou
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hui Zhou
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yajuan Li
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ting Mao
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jing Luo
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ji Yang
- Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan, China
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2
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Al Younis SM, Hadjileontiadis LJ, Stefanini C, Khandoker AH. Non-invasive technologies for heart failure, systolic and diastolic dysfunction modeling: a scoping review. Front Bioeng Biotechnol 2023; 11:1261022. [PMID: 37920244 PMCID: PMC10619666 DOI: 10.3389/fbioe.2023.1261022] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 10/09/2023] [Indexed: 11/04/2023] Open
Abstract
The growing global prevalence of heart failure (HF) necessitates innovative methods for early diagnosis and classification of myocardial dysfunction. In recent decades, non-invasive sensor-based technologies have significantly advanced cardiac care. These technologies ease research, aid in early detection, confirm hemodynamic parameters, and support clinical decision-making for assessing myocardial performance. This discussion explores validated enhancements, challenges, and future trends in heart failure and dysfunction modeling, all grounded in the use of non-invasive sensing technologies. This synthesis of methodologies addresses real-world complexities and predicts transformative shifts in cardiac assessment. A comprehensive search was performed across five databases, including PubMed, Web of Science, Scopus, IEEE Xplore, and Google Scholar, to find articles published between 2009 and March 2023. The aim was to identify research projects displaying excellence in quality assessment of their proposed methodologies, achieved through a comparative criteria-based rating approach. The intention was to pinpoint distinctive features that differentiate these projects from others with comparable objectives. The techniques identified for the diagnosis, classification, and characterization of heart failure, systolic and diastolic dysfunction encompass two primary categories. The first involves indirect interaction with the patient, such as ballistocardiogram (BCG), impedance cardiography (ICG), photoplethysmography (PPG), and electrocardiogram (ECG). These methods translate or convey the effects of myocardial activity. The second category comprises non-contact sensing setups like cardiac simulators based on imaging tools, where the manifestations of myocardial performance propagate through a medium. Contemporary non-invasive sensor-based methodologies are primarily tailored for home, remote, and continuous monitoring of myocardial performance. These techniques leverage machine learning approaches, proving encouraging outcomes. Evaluation of algorithms is centered on how clinical endpoints are selected, showing promising progress in assessing these approaches' efficacy.
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Affiliation(s)
- Sona M. Al Younis
- Department of Biomedical Engineering, Healthcare Engineering Innovation Center (HEIC), Khalifa University, Abu Dhabi, United Arab Emirates
| | - Leontios J. Hadjileontiadis
- Department of Biomedical Engineering, Healthcare Engineering Innovation Center (HEIC), Khalifa University, Abu Dhabi, United Arab Emirates
| | - Cesare Stefanini
- Creative Engineering Design Lab at the BioRobotics Institute, Applied Experimental Sciences Scuola Superiore Sant'Anna, Pontedera (Pisa), Italy
| | - Ahsan H. Khandoker
- Department of Biomedical Engineering, Healthcare Engineering Innovation Center (HEIC), Khalifa University, Abu Dhabi, United Arab Emirates
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3
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Fabiani I, Pugliese NR, Pedrizzetti G, Tonti G, Castiglione V, Chubuchny V, Taddei C, Gimelli A, Del Punta L, Balletti A, Del Franco A, Masi S, Lombardi CM, Cameli M, Emdin M, Giannoni A. Haemodynamic forces predicting remodelling and outcome in patients with heart failure treated with sacubitril/valsartan. ESC Heart Fail 2023; 10:2927-2938. [PMID: 37461184 PMCID: PMC10567631 DOI: 10.1002/ehf2.14346] [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: 02/07/2023] [Accepted: 03/01/2023] [Indexed: 10/13/2023] Open
Abstract
AIMS A novel tool for the evaluation of left ventricular (LV) systo-diastolic function through echo-derived haemodynamic forces (HDFs) has been recently proposed. The present study aimed to assess the predictive value of HDFs on (i) 6 month treatment response to sacubitril/valsartan in heart failure with reduced ejection fraction (HFrEF) patients and (ii) cardiovascular events. METHODS AND RESULTS Eighty-nine consecutive HFrEF patients [70% males, 65 ± 9 years, LV ejection fraction (LVEF) 27 ± 7%] initiating sacubitril/valsartan underwent clinical, laboratory, ultrasound and cardiopulmonary exercise testing evaluations. Patients experiencing no adverse events and showing ≥50% reduction in plasma N-terminal pro-B-type natriuretic peptide and/or ≥10% LVEF increase over 6 months were considered responders. Patients were followed up for the composite endpoint of HF-related hospitalisation, atrial fibrillation and cardiovascular death. Forty-five (51%) patients were responders. Among baseline variables, only HDF-derived whole cardiac cycle LV strength (wLVS) was higher in responders (4.4 ± 1.3 vs. 3.6 ± 1.2; p = 0.01). wLVS was also the only independent predictor of sacubitril/valsartan response at multivariable logistic regression analysis [odds ratio 1.36; 95% confidence interval (CI) 1.10-1.67], with good accuracy at receiver operating characteristic (ROC) analysis [optimal cutpoint: ≥3.7%; area under the curve (AUC) = 0.736]. During a 33 month (23-41) median follow-up, a wLVS increase after 6 months (ΔwLVS) showed a high discrimination ability at time-dependent ROC analysis (optimal cut-off: ≥0.5%; AUC = 0.811), stratified prognosis (log-rank p < 0.0001) and remained an independent predictor for the composite endpoint (hazard ratio 0.76; 95% CI 0.61-0.95; p < 0.01), after adjusting for clinical and instrumental variables. CONCLUSIONS HDF analysis predicts sacubitril/valsartan response and might optimise decision-making in HFrEF patients.
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Affiliation(s)
| | | | - Gianni Pedrizzetti
- Department of Engineering and ArchitectureUniversity of TriesteTriesteItaly
- Department of Biomedical EngineeringUniversity of CaliforniaIrvineCaliforniaUSA
| | - Giovanni Tonti
- Division of Cardiology‘G. D'Annunzio’ UniversityChietiItaly
| | - Vincenzo Castiglione
- Fondazione Toscana Gabriele MonasterioPisaItaly
- ‘Health Science’ Interdisciplinary Research CenterScuola Superiore Sant'AnnaPisaItaly
| | | | | | | | - Lavinia Del Punta
- Department of Clinical and Experimental MedicineUniversity of PisaPisaItaly
| | - Alessio Balletti
- Department of Clinical and Experimental MedicineUniversity of PisaPisaItaly
| | | | - Stefano Masi
- Department of Clinical and Experimental MedicineUniversity of PisaPisaItaly
| | - Carlo Mario Lombardi
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public HealthUniversity of Brescia Civil HospitalBresciaItaly
| | - Matteo Cameli
- Department of Medical Biotechnologies, Division of CardiologyUniversity of SienaSienaItaly
| | - Michele Emdin
- Fondazione Toscana Gabriele MonasterioPisaItaly
- ‘Health Science’ Interdisciplinary Research CenterScuola Superiore Sant'AnnaPisaItaly
| | - Alberto Giannoni
- Fondazione Toscana Gabriele MonasterioPisaItaly
- ‘Health Science’ Interdisciplinary Research CenterScuola Superiore Sant'AnnaPisaItaly
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Prosperi S, D’Amato A, Severino P, Myftari V, Monosilio S, Marchiori L, Zagordi LM, Filomena D, Di Pietro G, Birtolo LI, Badagliacca R, Mancone M, Maestrini V, Vizza CD. Sizing SGLT2 Inhibitors Up: From a Molecular to a Morpho-Functional Point of View. Int J Mol Sci 2023; 24:13848. [PMID: 37762152 PMCID: PMC10530908 DOI: 10.3390/ijms241813848] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 08/30/2023] [Accepted: 09/03/2023] [Indexed: 09/29/2023] Open
Abstract
Sodium-glucose cotransporter 2 inhibitors (SGLT2i), or gliflozins, have recently been shown to reduce cardiovascular death and hospitalization in patients with heart failure, representing a revolutionary therapeutic tool. The purpose of this review is to explore their multifaceted mechanisms of actions, beyond their known glucose reduction power. The cardioprotective effects of gliflozins seem to be linked to the maintenance of cellular homeostasis and to an action on the main metabolic pathways. They improve the oxygen supply for cardiomyocytes with a considerable impact on both functional and morphological myocardial aspects. Moreover, multiple molecular actions of SGLT2i are being discovered, such as the reduction of both inflammation, oxidative stress and cellular apoptosis, all responsible for myocardial damage. Various studies showed controversial results concerning the role of SGLT2i in reverse cardiac remodeling and the lowering of natriuretic peptides, suggesting that their overall effect has yet to be fully understood. In addition to this, advanced imaging studies evaluating the effect on all four cardiac chambers are lacking. Further studies will be needed to better understand the real impact of their administration, their use in daily practice and how they can contribute to benefits in terms of reverse cardiac remodeling.
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Affiliation(s)
| | - Andrea D’Amato
- Correspondence: ; Tel.: +39-06-49979021; Fax: +39-06-49979060
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5
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Pola K, Roijer A, Borgquist R, Ostenfeld E, Carlsson M, Bakos Z, Arheden H, Arvidsson PM. Hemodynamic forces from 4D flow magnetic resonance imaging predict left ventricular remodeling following cardiac resynchronization therapy. J Cardiovasc Magn Reson 2023; 25:45. [PMID: 37620886 PMCID: PMC10463519 DOI: 10.1186/s12968-023-00955-8] [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: 04/22/2023] [Accepted: 07/10/2023] [Indexed: 08/26/2023] Open
Abstract
BACKGROUND Patients with heart failure and left bundle branch block (LBBB) may receive cardiac resynchronization therapy (CRT), but current selection criteria are imprecise, and many patients have limited treatment response. Hemodynamic forces (HDF) have been suggested as a marker for CRT response. The aim of this study was therefore to investigate left ventricular (LV) HDF as a predictive marker for LV remodeling after CRT. METHODS Patients with heart failure, EF < 35% and LBBB (n = 22) underwent CMR with 4D flow prior to CRT. LV HDF were computed in three directions using the Navier-Stokes equations, reported in median N [interquartile range], and the ratio of transverse/longitudinal HDF was calculated for systole and diastole. Transthoracic echocardiography was performed before and 6 months after CRT. Patients with end-systolic volume reduction ≥ 15% were defined as responders. RESULTS Non-responders had smaller HDF than responders in the inferior-anterior direction in systole (0.06 [0.03] vs. 0.07 [0.03], p = 0.04), and in the apex-base direction in diastole (0.09 [0.02] vs. 0.1 [0.05], p = 0.047). Non-responders had larger diastolic HDF ratio compared to responders (0.89 vs. 0.67, p = 0.004). ROC analysis of diastolic HDF ratio for identifying CRT non-responders had AUC of 0.88 (p = 0.005) with sensitivity 57% and specificity 100% for ratio > 0.87. Intragroup comparison found higher HDF ratio in systole compared to diastole for responders (p = 0.003), but not for non-responders (p = 0.8). CONCLUSION Hemodynamic force ratio is a potential marker for identifying patients with heart failure and LBBB who are unlikely to benefit from CRT. Larger-scale studies are required before implementation of HDF analysis into clinical practice.
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Affiliation(s)
- Karin Pola
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Anders Roijer
- Heart Failure and Valvular Heart Disease Section, Skåne University Hospital, Lund, Sweden
| | - Rasmus Borgquist
- Cardiology Division, Arrhythmia Section, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Ellen Ostenfeld
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Marcus Carlsson
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Zoltan Bakos
- Cardiology Division, Arrhythmia Section, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Håkan Arheden
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Per M Arvidsson
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden.
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Vairo A, Zaccaro L, Ballatore A, Airale L, D’Ascenzo F, Alunni G, Conrotto F, Scudeler L, Mascaretti D, Miccoli D, Torre ML, Rinaldi M, Pedrizzetti G, Salizzoni S, De Ferrari GM. Acute Modification of Hemodynamic Forces in Patients with Severe Aortic Stenosis after Transcatheter Aortic Valve Implantation. J Clin Med 2023; 12:jcm12031218. [PMID: 36769866 PMCID: PMC9917967 DOI: 10.3390/jcm12031218] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/19/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Transcatheter aortic valve implantation (TAVI) is the established first-line treatment for patient with severe aortic stenosis not suitable for surgery. Echocardiographic evaluation of hemodynamic forces (HDFs) is a growing field, holding the potential to early predict improvement in LV function. A prospective observational study was conducted. Transthoracic echocardiography was performed before and after TAVI. HDFs were analyzed along with traditional left ventricular (LV) function parameters. Twenty-five consecutive patients undergoing TAVI were enrolled: mean age 83 ± 5 years, 74.5% male, mean LV Ejection Fraction (LVEF) at baseline 57 ± 8%. Post-TAVI echocardiographic evaluation was performed 2.4 ± 1.06 days after the procedure. HDF amplitude parameters improved significantly after the procedure: LV Longitudinal Forces (LF) apex-base [mean difference (MD) 1.79%; 95% CI 1.07-2.5; p-value < 0.001]; LV systolic LF apex-base (MD 2.6%; 95% CI 1.57-3.7; p-value < 0.001); LV impulse (LVim) apex-base (MD 2.9%; 95% CI 1.48-4.3; p-value < 0.001). Similarly, HDFs orientation parameters improved: LVLF angle (MD 1.5°; 95% CI 0.07-2.9; p-value = 0.041); LVim angle (MD 2.16°; 95% CI 0.76-3.56; p-value = 0.004). Conversely, global longitudinal strain and LVEF did not show any significant difference before and after the procedure. Echocardiographic analysis of HDFs could help differentiate patients with LV function recovery after TAVI from patients with persistent hemodynamic dysfunction.
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Affiliation(s)
- Alessandro Vairo
- Division of Cardiology, Cardiovascular and Thoracic Department, Citta della Salute e della Scienza Hospital, 10126 Turin, Italy
- Correspondence: (A.V.); (L.A.); Tel.: +39-011-6335511 (A.V.); +39-011-6336953 (L.A.); Fax: +39-011-6336015 (A.V.); +39-011-6336952 (L.A.)
| | - Lorenzo Zaccaro
- Division of Cardiology, Cardiovascular and Thoracic Department, Citta della Salute e della Scienza Hospital, 10126 Turin, Italy
| | - Andrea Ballatore
- Division of Cardiology, Cardiovascular and Thoracic Department, Citta della Salute e della Scienza Hospital, 10126 Turin, Italy
| | - Lorenzo Airale
- Internal Medicine and Hypertension Division, Department of Medical Sciences, Città della Salute e della Scienza di Torino, University of Turin, 10126 Turin, Italy
- Correspondence: (A.V.); (L.A.); Tel.: +39-011-6335511 (A.V.); +39-011-6336953 (L.A.); Fax: +39-011-6336015 (A.V.); +39-011-6336952 (L.A.)
| | - Fabrizio D’Ascenzo
- Division of Cardiology, Cardiovascular and Thoracic Department, Citta della Salute e della Scienza Hospital, 10126 Turin, Italy
| | - Gianluca Alunni
- Division of Cardiology, Cardiovascular and Thoracic Department, Citta della Salute e della Scienza Hospital, 10126 Turin, Italy
| | - Federico Conrotto
- Division of Cardiology, Cardiovascular and Thoracic Department, Citta della Salute e della Scienza Hospital, 10126 Turin, Italy
| | - Luca Scudeler
- Division of Cardiology, Cardiovascular and Thoracic Department, Citta della Salute e della Scienza Hospital, 10126 Turin, Italy
| | - Daniela Mascaretti
- Division of Cardiology, Cardiovascular and Thoracic Department, Citta della Salute e della Scienza Hospital, 10126 Turin, Italy
| | - Davide Miccoli
- Division of Cardiology, Cardiovascular and Thoracic Department, Citta della Salute e della Scienza Hospital, 10126 Turin, Italy
| | - Michele La Torre
- Division of Cardiac Surgery, Department of Surgical Sciences, Città della Salute e della Scienza di Torino, University of Turin, 10126 Torino, Italy
| | - Mauro Rinaldi
- Division of Cardiac Surgery, Department of Surgical Sciences, Città della Salute e della Scienza di Torino, University of Turin, 10126 Torino, Italy
| | - Gianni Pedrizzetti
- Department of Engineering and Architecture, University of Trieste, 34127 Trieste, Italy
| | - Stefano Salizzoni
- Division of Cardiac Surgery, Department of Surgical Sciences, Città della Salute e della Scienza di Torino, University of Turin, 10126 Torino, Italy
| | - Gaetano Maria De Ferrari
- Division of Cardiology, Cardiovascular and Thoracic Department, Citta della Salute e della Scienza Hospital, 10126 Turin, Italy
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Backhaus SJ, Uzun H, Rösel SF, Schulz A, Lange T, Crawley RJ, Evertz R, Hasenfuß G, Schuster A. Hemodynamic force assessment by cardiovascular magnetic resonance in HFpEF: A case-control substudy from the HFpEF stress trial. EBioMedicine 2022; 86:104334. [PMID: 36423376 PMCID: PMC9691873 DOI: 10.1016/j.ebiom.2022.104334] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 10/15/2022] [Accepted: 10/17/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND The diagnosis of heart failure with preserved ejection fraction (HFpEF) remains challenging. Exercise-stress testing is recommended in case of uncertainty; however, this approach is time-consuming and costly. Since preserved EF does not represent normal systolic function, we hypothesized comprehensive cardiovascular magnetic resonance (CMR) assessment of cardiac hemodynamic forces (HDF) may identify functional abnormalities in HFpEF. METHODS The HFpEF Stress Trial (DZHK-17; Clinicaltrials.gov: NCT03260621) prospectively recruited 75 patients with exertional dyspnea, preserved EF (≥50%) and signs of diastolic dysfunction (E/e' ≥8) on echocardiography. Patients underwent rest and exercise-stress right heart catheterisation, echocardiography and CMR. The final study cohort consisted of 68 patients (HFpEF n = 34 and non-cardiac dyspnea n = 34 according to pulmonary capillary wedge pressure (PCWP)). HDF assessment included left ventricular (LV) longitudinal, systolic peak and impulse, systolic/diastolic transition, E-wave deceleration as well as A-wave acceleration forces. Follow-up after 24 months evaluated cardiovascular mortality and hospitalisation (CVH) - only two patients were lost to follow-up. FINDINGS HDF assessment revealed impairment of LV longitudinal function in patients with HFpEF compared to non-cardiac dyspnoea (15.8% vs. 18.3%, p = 0.035), attributable to impairment of systolic peak (38.6% vs 51.6%, p = 0.003) and impulse (20.8% vs. 24.5%, p = 0.009) forces as well as late diastolic filling (-3.8% vs -5.4%, p = 0.029). Early diastolic filling was impaired in HFpEF patients identified at rest compared with patients identified during stress only (7.7% vs. 9.9%, p = 0.004). Impaired systolic peak was associated with CVH (HR 0.95, p = 0.016), and was superior to LV global longitudinal strain assessment in prediction of CVH (AUC 0.76 vs. 0.61, p = 0.048). INTERPRETATION Assessment of HDF indicates impairment of LV systolic ejection force in HFpEF which is associated with cardiovascular events. FUNDING German Centre for Cardiovascular Research (DZHK).
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Affiliation(s)
- Sören J. Backhaus
- University Medical Center Göttingen, Department of Cardiology and Pneumology, Georg-August University, Göttingen, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Göttingen, Göttingen, Germany,School of Biomedical Engineering and Imaging Sciences, King's College London, United Kingdom
| | - Harun Uzun
- University Medical Center Göttingen, Department of Cardiology and Pneumology, Georg-August University, Göttingen, Germany
| | - Simon F. Rösel
- University Medical Center Göttingen, Department of Cardiology and Pneumology, Georg-August University, Göttingen, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Göttingen, Göttingen, Germany
| | - Alexander Schulz
- University Medical Center Göttingen, Department of Cardiology and Pneumology, Georg-August University, Göttingen, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Göttingen, Göttingen, Germany
| | - Torben Lange
- University Medical Center Göttingen, Department of Cardiology and Pneumology, Georg-August University, Göttingen, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Göttingen, Göttingen, Germany
| | - Richard J. Crawley
- School of Biomedical Engineering and Imaging Sciences, King's College London, United Kingdom
| | - Ruben Evertz
- University Medical Center Göttingen, Department of Cardiology and Pneumology, Georg-August University, Göttingen, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Göttingen, Göttingen, Germany
| | - Gerd Hasenfuß
- University Medical Center Göttingen, Department of Cardiology and Pneumology, Georg-August University, Göttingen, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Göttingen, Göttingen, Germany
| | - Andreas Schuster
- University Medical Center Göttingen, Department of Cardiology and Pneumology, Georg-August University, Göttingen, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Göttingen, Göttingen, Germany,School of Biomedical Engineering and Imaging Sciences, King's College London, United Kingdom,Corresponding author. University Medical Centre, Georg-August-University Göttingen, Department of Cardiology and Pneumology, Robert-Koch-Str. 40, 37099, Göttingen, Germany.
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8
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Pola K, Bergström E, Töger J, Rådegran G, Arvidsson PM, Carlsson M, Arheden H, Ostenfeld E. Increased biventricular hemodynamic forces in precapillary pulmonary hypertension. Sci Rep 2022; 12:19933. [PMID: 36402861 PMCID: PMC9675772 DOI: 10.1038/s41598-022-24267-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 11/14/2022] [Indexed: 11/21/2022] Open
Abstract
Precapillary pulmonary hypertension (PHprecap) is a condition with elevated pulmonary vascular pressure and resistance. Patients have a poor prognosis and understanding the underlying pathophysiological mechanisms is crucial to guide and improve treatment. Ventricular hemodynamic forces (HDF) are a potential early marker of cardiac dysfunction, which may improve evaluation of treatment effect. Therefore, we aimed to investigate if HDF differ in patients with PHprecap compared to healthy controls. Patients with PHprecap (n = 20) and age- and sex-matched healthy controls (n = 12) underwent cardiac magnetic resonance imaging including 4D flow. Biventricular HDF were computed in three spatial directions throughout the cardiac cycle using the Navier-Stokes equations. Biventricular HDF (N) indexed to stroke volume (l) were larger in patients than controls in all three directions. Data is presented as median N/l for patients vs controls. In the RV, systolic HDF diaphragm-outflow tract were 2.1 vs 1.4 (p = 0.003), and septum-free wall 0.64 vs 0.42 (p = 0.007). Diastolic RV HDF apex-base were 1.4 vs 0.87 (p < 0.0001), diaphragm-outflow tract 0.80 vs 0.47 (p = 0.005), and septum-free wall 0.60 vs 0.38 (p = 0.003). In the LV, systolic HDF apex-base were 2.1 vs 1.5 (p = 0.005), and lateral wall-septum 1.5 vs 1.2 (p = 0.02). Diastolic LV HDF apex-base were 1.6 vs 1.2 (p = 0.008), and inferior-anterior 0.46 vs 0.24 (p = 0.02). Hemodynamic force analysis conveys information of pathological cardiac pumping mechanisms complementary to more established volumetric and functional parameters in precapillary pulmonary hypertension. The right ventricle compensates for the increased afterload in part by augmenting transverse forces, and left ventricular hemodynamic abnormalities are mainly a result of underfilling rather than intrinsic ventricular dysfunction.
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Affiliation(s)
- Karin Pola
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Elsa Bergström
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Johannes Töger
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Göran Rådegran
- Department of Clinical Sciences Lund, Cardiology, and Skåne University Hospital, Section of Heart Failure and Valvular Disease, Lund University, Lund, Sweden
| | - Per M Arvidsson
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Marcus Carlsson
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Håkan Arheden
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Ellen Ostenfeld
- Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden.
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9
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Aliabadi S, Sojoudi A, Bandali MF, Bristow MS, Lydell C, Fedak PWM, White JA, Garcia J. Intra-cardiac pressure drop and flow distribution of bicuspid aortic valve disease in preserved ejection fraction. Front Cardiovasc Med 2022; 9:903277. [PMID: 36093173 PMCID: PMC9448951 DOI: 10.3389/fcvm.2022.903277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 08/08/2022] [Indexed: 12/01/2022] Open
Abstract
Background Bicuspid aortic valve (BAV) is more than a congenital defect since it is accompanied by several secondary complications that intensify induced impairments. Hence, BAV patients need lifelong evaluations to prevent severe clinical sequelae. We applied 4D-flow magnetic resonance imaging (MRI) for in detail visualization and quantification of in vivo blood flow to verify the reliability of the left ventricular (LV) flow components and pressure drops in the silent BAV subjects with mild regurgitation and preserved ejection fraction (pEF). Materials and methods A total of 51 BAV patients with mild regurgitation and 24 healthy controls were recruited to undergo routine cardiac MRI followed by 4D-flow MRI using 3T MRI scanners. A dedicated 4D-flow module was utilized to pre-process and then analyze the LV flow components (direct flow, retained inflow, delayed ejection, and residual volume) and left-sided [left atrium (LA) and LV] local pressure drop. To elucidate significant diastolic dysfunction in our population, transmitral early and late diastolic 4D flow peak velocity (E-wave and A-wave, respectively), as well as E/A ratio variable, were acquired. Results The significant means differences of each LV flow component (global measurement) were not observed between the two groups (p > 0.05). In terms of pressure analysis (local measurement), maximum and mean as well as pressure at E-wave and A-wave timepoints at the mitral valve (MV) plane were significantly different between BAV and control groups (p: 0.005, p: 0.02, and p: 0.04 and p: <0.001; respectively). Furthermore, maximum pressure and pressure difference at the A-wave timepoint at left ventricle mid and left ventricle apex planes were significant. Although we could not find any correlation between LV diastolic function and flow components, Low but statistically significant correlations were observed with local pressure at LA mid, MV and LV apex planes at E-wave timepoint (R: −0.324, p: 0.005, R: −0.327, p: 0.004, and R: −0.306, p: 0.008, respectively). Conclusion In BAV patients with pEF, flow components analysis is not sensitive to differentiate BAV patients with mild regurgitation and healthy control because flow components and EF are global parameters. Inversely, pressure (local measurement) can be a more reliable biomarker to reveal the early stage of diastolic dysfunction.
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10
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Arvidsson PM, Nelsson A, Magnusson M, Smith JG, Carlsson M, Arheden H. Hemodynamic force analysis is not ready for clinical trials on HFpEF. Sci Rep 2022; 12:4017. [PMID: 35256713 PMCID: PMC8901629 DOI: 10.1038/s41598-022-08023-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 02/22/2022] [Indexed: 01/11/2023] Open
Abstract
Hemodynamic force analysis has been proposed as a novel tool for early detection of subclinical systolic dysfunction in heart failure with preserved ejection fraction (HFpEF). Here we investigated the ability of hemodynamic forces to discriminate between healthy subjects and heart failure patients with varying degrees of systolic dysfunction. We studied 34 controls, 16 HFpEF patients, and 25 heart failure patients with mid-range (HFmrEF) or reduced ejection fraction (HFrEF) using cardiac magnetic resonance with acquisition of cine images and 4D flow at 1.5 T. The Navier-Stokes equation was used to compute global left ventricular hemodynamic forces over the entire cardiac cycle. Forces were analyzed for systole, diastole, and the entire heartbeat, with and without normalization to left ventricular volume. Volume-normalized hemodynamic forces demonstrated significant positive correlation with EF (r2 = 0.47, p < 0.0001) and were found significantly lower in heart failure with reduced ejection fraction compared to controls (p < 0.0001 for systole and diastole). No difference was seen between controls and HFpEF (p > 0.34). Non-normalized forces displayed no differences between controls and HFpEF (p > 0.24 for all analyses) and did not correlate with EF (p = 0.36). Left ventricular hemodynamic force analysis, whether indexed to LV volumes or not, is not ready for clinical trials on HFpEF assessment.
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Affiliation(s)
- Per M Arvidsson
- Clinical Physiology, Department of Clinical Sciences Lund, Skåne University Hospital, Lund University, 22185, Lund, Sweden
| | - Anders Nelsson
- Clinical Physiology, Department of Clinical Sciences Lund, Skåne University Hospital, Lund University, 22185, Lund, Sweden
| | - Martin Magnusson
- Department of Cardiology, Clinical Sciences, Skåne University Hospital, Lund University, Malmö, Sweden.,Department of Clinical Sciences Malmö, Lund University, Malmö, Sweden.,Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden
| | - J Gustav Smith
- Department of Cardiology, Clinical Sciences, Skåne University Hospital, Lund University, Lund, Sweden
| | - Marcus Carlsson
- Clinical Physiology, Department of Clinical Sciences Lund, Skåne University Hospital, Lund University, 22185, Lund, Sweden
| | - Håkan Arheden
- Clinical Physiology, Department of Clinical Sciences Lund, Skåne University Hospital, Lund University, 22185, Lund, Sweden.
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11
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Riva A, Sturla F, Pica S, Camporeale A, Tondi L, Saitta S, Caimi A, Giese D, Palladini G, Milani P, Castelvecchio S, Menicanti L, Redaelli A, Lombardi M, Votta E. Comparison of Four-Dimensional Magnetic Resonance Imaging Analysis of Left Ventricular Fluid Dynamics and Energetics in Ischemic and Restrictive Cardiomyopathies. J Magn Reson Imaging 2022; 56:1157-1170. [PMID: 35075711 PMCID: PMC9541919 DOI: 10.1002/jmri.28076] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 01/11/2022] [Accepted: 01/11/2022] [Indexed: 01/07/2023] Open
Abstract
Background Time‐resolved three‐directional velocity‐encoded (4D flow) magnetic resonance imaging (MRI) enables the quantification of left ventricular (LV) intracavitary fluid dynamics and energetics, providing mechanistic insight into LV dysfunctions. Before becoming a support to diagnosis and patient stratification, this analysis should prove capable of discriminating between clearly different LV derangements. Purpose To investigate the potential of 4D flow in identifying fluid dynamic and energetics derangements in ischemic and restrictive LV cardiomyopathies. Study Type Prospective observational study. Population Ten patients with post‐ischemic cardiomyopathy (ICM), 10 patients with cardiac light‐chain cardiac amyloidosis (AL‐CA), and 10 healthy controls were included. Field Strength/Sequence 1.5 T/balanced steady‐state free precession cine and 4D flow sequences. Assessment Flow was divided into four components: direct flow (DF), retained inflow, delayed ejection flow, and residual volume (RV). Demographics, LV morphology, flow components, global and regional energetics (volume‐normalized kinetic energy [KEV] and viscous energy loss [ELV]), and pressure‐derived hemodynamic force (HDF) were compared between the three groups. Statistical Tests Intergroup differences in flow components were tested by one‐way analysis of variance (ANOVA); differences in energetic variables and peak HDF were tested by two‐way ANOVA. A P‐value of <0.05 was considered significant. Results ICM patients exhibited the following statistically significant alterations vs. controls: reduced KEV, mostly in the basal region, in systole (−44%) and in diastole (−37%); altered flow components, with reduced DF (−33%) and increased RV (+26%); and reduced basal–apical HDF component on average by 63% at peak systole. AL‐CA patients exhibited the following alterations vs. controls: significantly reduced KEV at the E‐wave peak in the basal segment (−34%); albeit nonstatistically significant, increased peaks and altered time‐course of the HDF basal–apical component in diastole and slightly reduced HDF components in systole. Data Conclusion The analysis of multiple 4D flow‐derived parameters highlighted fluid dynamic alterations associated with systolic and diastolic dysfunctions in ICM and AL‐CA patients, respectively. Level of Evidence 2 Technical Efficacy Stage 3
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Affiliation(s)
- Alessandra Riva
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy.,3D and Computer Simulation Laboratory, IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Francesco Sturla
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy.,3D and Computer Simulation Laboratory, IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Silvia Pica
- Multimodality Cardiac Imaging, IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Antonia Camporeale
- Multimodality Cardiac Imaging, IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Lara Tondi
- Multimodality Cardiac Imaging, IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Simone Saitta
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Alessandro Caimi
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | | | - Giovanni Palladini
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Paolo Milani
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | | | - Lorenzo Menicanti
- Cardiac Surgery Department, IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Alberto Redaelli
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Massimo Lombardi
- Multimodality Cardiac Imaging, IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Emiliano Votta
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy.,3D and Computer Simulation Laboratory, IRCCS Policlinico San Donato, San Donato Milanese, Italy
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12
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Daal MRR, Strijkers GJ, Hautemann DJ, Nederveen AJ, Wüst RCI, Coolen BF. Longitudinal CMR assessment of cardiac global longitudinal strain and hemodynamic forces in a mouse model of heart failure. Int J Cardiovasc Imaging 2022; 38:2385-2394. [PMID: 36434328 PMCID: PMC9700588 DOI: 10.1007/s10554-022-02631-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 04/22/2022] [Indexed: 12/14/2022]
Abstract
To longitudinally assess left ventricle (LV) global longitudinal strain (GLS) and hemodynamic forces during the early stages of cardiac dysfunction in a mouse model of heart failure with preserved ejection fraction (HFpEF). Cardiac MRI measurements were performed in control mice (n = 6), and db/db mice (n = 7), whereby animals were scanned four times between the age of 11-15 weeks. After the first scan, the db/db animals received a doxycycline intervention to accelerate progression of HFpEF. Systolic function was evaluated based on a series of prospectively ECG-triggered short-axis CINE images acquired from base to apex. Cardiac GLS and hemodynamic forces values were evaluated based on high frame rate retrospectively gated 2-, 3-, and 4-chamber long-axis CINE images. Ejection fraction (EF) was not different between control and db/db animals, despite that cardiac output, as well as end systolic and end diastolic volume were significantly higher in control animals. Whereas GLS parameters were not significantly different between groups, hemodynamic force root mean square (RMS) values, as well as average hemodynamic forces and the ratio between hemodynamic forces in the inferolateral-anteroseptal and apical-basal direction were lower in db/db mice compared to controls. More importantly, hemodynamic forces parameters showed a significant interaction effect between time and group. Our results indicated that hemodynamic forces parameters were the only functional outcome measure that showed distinct temporal differences between groups. As such, changes in hemodynamic forces reflect early alterations in cardiac function which can be of added value in (pre)clinical research on HFpEF.
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Affiliation(s)
- Mariah R. R. Daal
- Department of Biomedical Engineering and Physics, Amsterdam University Medical Centers, Amsterdam Cardiovascular Sciences, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Gustav J. Strijkers
- Department of Biomedical Engineering and Physics, Amsterdam University Medical Centers, Amsterdam Cardiovascular Sciences, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | | | - Aart J. Nederveen
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - Rob C. I. Wüst
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioral and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Bram F. Coolen
- Department of Biomedical Engineering and Physics, Amsterdam University Medical Centers, Amsterdam Cardiovascular Sciences, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
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13
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Vallelonga F, Airale L, Tonti G, Argulian E, Milan A, Narula J, Pedrizzetti G. Introduction to Hemodynamic Forces Analysis: Moving Into the New Frontier of Cardiac Deformation Analysis. J Am Heart Assoc 2021; 10:e023417. [PMID: 34889114 PMCID: PMC9075239 DOI: 10.1161/jaha.121.023417] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The potential relevance of blood flow for describing cardiac function has been known for the past 2 decades, but the association of clinical parameters with the complexity of fluid motion is still not well understood. Hemodynamic force (HDF) analysis represents a promising approach for the study of blood flow within the ventricular chambers through the exploration of intraventricular pressure gradients. Previous experimental studies reported the significance of invasively measured cardiac pressure gradients in patients with heart failure. Subsequently, advances in cardiovascular imaging allowed noninvasive assessment of pressure gradients during progression and resolution of ventricular dysfunction and in the setting of resynchronization therapy. The HDF analysis can amplify mechanical abnormalities, detect them earlier compared with conventional ejection fraction and strain analysis, and possibly predict the development of cardiac remodeling. Alterations in HDFs provide the earliest signs of impaired cardiac physiology and can therefore transform the existing paradigm of cardiac function analysis once implemented in routine clinical care. Until recently, the HDF investigation was possible only with contrast‐enhanced echocardiography and magnetic resonance imaging, precluding its widespread clinical use. A mathematical model, based on the first principle of fluid dynamics and validated using 4‐dimensional‐flow‐magnetic resonance imaging, has allowed HDF analysis through routine transthoracic echocardiography, making it more readily accessible for routine clinical use. This article describes the concept of HDF analysis and reviews the existing evidence supporting its application in several clinical settings. Future studies should address the prognostic importance of HDF assessment in asymptomatic patients and its incorporation into clinical decision pathways.
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Affiliation(s)
- Fabrizio Vallelonga
- Division of Internal Medicine and Hypertension Department of Medical Sciences University of Torino Torino Italy
| | - Lorenzo Airale
- Division of Internal Medicine and Hypertension Department of Medical Sciences University of Torino Torino Italy
| | - Giovanni Tonti
- Institute of Cardiology and Centre of Excellence on Aging University of Chieti Chieti Italy
| | - Edgar Argulian
- Mount Sinai HeartIcahn School of Medicine at Mount Sinai New York NY
| | - Alberto Milan
- Division of Internal Medicine and Hypertension Department of Medical Sciences University of Torino Torino Italy
| | - Jagat Narula
- Mount Sinai HeartIcahn School of Medicine at Mount Sinai New York NY
| | - Gianni Pedrizzetti
- Department of Engineering and Architecture University of Trieste Trieste Italy
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14
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Reference Ranges of Left Ventricular Hemodynamic Forces in Healthy Adults: A Speckle-Tracking Echocardiographic Study. J Clin Med 2021; 10:jcm10245937. [PMID: 34945231 PMCID: PMC8707005 DOI: 10.3390/jcm10245937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 01/28/2023] Open
Abstract
Background: The normal limits of left ventricular (LV) hemodynamic forces (HDFs) are not exactly known. The aim of this study was to explore the full spectrum of HDF parameters in healthy subjects and determine their physiologic correlates. Methods: 269 healthy subjects were enrolled (mean age: 43 ± 14 years; 123 (45.7%) men). All participants underwent an echo-Doppler examination. Tri-plane tissue tracking from apical views was used to measure 2D global endocardial longitudinal strain (GLS), circumferential strain (GCS), and LV HDFs. HDFs were normalized with LV volume and divided by specific weight. Results: LV systolic longitudinal HDFs (%) were higher in men (20.8 ± 6.5 vs. 18.9 ± 5.6, p = 0.009; 22.0 ± 6.7 vs. 19.8 ± 5.6, p = 0.004, respectively). There was a significant correlation between GCS (increased) (r = −0.240, p < 0.001) and LV longitudinal HDFs (reduced) (r = −0.155, p = 0.01) with age. In a multivariable analysis age, BSA, pulse pressure, heart rate and GCS were the only independent variables associated with LV HDFs (β coefficient = −0.232, p < 0.001; 0.149, p = 0.003; 0.186, p < 0.001; 0.396, p < 0.001; −0.328, p < 0.001; respectively). Conclusion: We report on the physiologic range of LV HDFs. Knowledge of reference values of HDFs may prompt their implementation into clinical routine and allow a more comprehensive assessment of the LV function.
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15
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Demirkiran A, van Ooij P, Westenberg JJM, Hofman MBM, van Assen HC, Schoonmade LJ, Asim U, Blanken CPS, Nederveen AJ, van Rossum AC, Götte MJW. Clinical intra-cardiac 4D flow CMR: acquisition, analysis, and clinical applications. Eur Heart J Cardiovasc Imaging 2021; 23:154-165. [PMID: 34143872 PMCID: PMC8787996 DOI: 10.1093/ehjci/jeab112] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 05/25/2021] [Indexed: 12/13/2022] Open
Abstract
Identification of flow patterns within the heart has long been recognized as a potential contribution to the understanding of physiological and pathophysiological processes of cardiovascular diseases. Although the pulsatile flow itself is multi-dimensional and multi-directional, current available non-invasive imaging modalities in clinical practice provide calculation of flow in only 1-direction and lack 3-dimensional volumetric velocity information. Four-dimensional flow cardiovascular magnetic resonance imaging (4D flow CMR) has emerged as a novel tool that enables comprehensive and critical assessment of flow through encoding velocity in all 3 directions in a volume of interest resolved over time. Following technical developments, 4D flow CMR is not only capable of visualization and quantification of conventional flow parameters such as mean/peak velocity and stroke volume but also provides new hemodynamic parameters such as kinetic energy. As a result, 4D flow CMR is being extensively exploited in clinical research aiming to improve understanding of the impact of cardiovascular disease on flow and vice versa. Of note, the analysis of 4D flow data is still complex and accurate analysis tools that deliver comparable quantification of 4D flow values are a necessity for a more widespread adoption in clinic. In this article, the acquisition and analysis processes are summarized and clinical applications of 4D flow CMR on the heart including conventional and novel hemodynamic parameters are discussed. Finally, clinical potential of other emerging intra-cardiac 4D flow imaging modalities is explored and a near-future perspective on 4D flow CMR is provided.
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Affiliation(s)
- Ahmet Demirkiran
- Department of Cardiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Pim van Ooij
- Department of Radiology, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Jos J M Westenberg
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Mark B M Hofman
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Hans C van Assen
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Linda J Schoonmade
- Medical Library, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Usman Asim
- Department of Cardiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Carmen P S Blanken
- Department of Radiology, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Aart J Nederveen
- Department of Radiology, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Albert C van Rossum
- Department of Cardiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Marco J W Götte
- Department of Cardiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
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Pedrizzetti G, Faganello G, Croatto E, Di Lenarda A. The hemodynamic power of the heart differentiates normal from diseased right ventricles. J Biomech 2021; 119:110312. [PMID: 33609983 DOI: 10.1016/j.jbiomech.2021.110312] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 01/31/2021] [Accepted: 02/03/2021] [Indexed: 12/15/2022]
Abstract
Cardiac mechanics is primarily described by the pressure-volume relationship. The ventricular pressure-volume loop displays the instantaneous relationship between intraventricular pressure and volume throughout the cardiac cycle; however, it does not consider the shape of the ventricles, their spatiotemporal deformation patterns, and how these balance with the flowing blood. Our study demonstrates that the pressure-volume relationship represents a first level of approximation for the mechanical power of the ventricles, while, at a further level of approximation, the importance of hemodynamic power emerges through the balance between deformation patterns and fluid dynamics. The analysis is preliminarily tested in a healthy subject's right ventricle and two patients. Moreover, patients' geometry was then rescaled to present a normal volumetric profile to verify whether results were affected by volume size or by the spatiotemporal pattern of how that volume profile was achieved. Results show that alterations of hemodynamic power were found in the abnormal ventricles and that they were not directly caused by the ventricular size but by changes in the ability of intraventricular pressure gradient to generate blood flow. Therefore, hemodynamic power represents a physics-based measure that takes into account the dynamics of the space-time shape changes in combination with blood flow. Hemodynamic power is assessed non-invasively using cardiac imaging techniques and can be an early indicator of cardiac dysfunction before changes occur in volumetric measurements. These preliminary results provide a physical ground to evaluate its diagnostic or prognostic significance in future clinical studies.
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Affiliation(s)
- Gianni Pedrizzetti
- Department of Engineering and Architecture, University of Trieste, Italy.
| | - Giorgio Faganello
- Cardiovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina, Trieste, Italy
| | - Elisa Croatto
- Cardiovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina, Trieste, Italy
| | - Andrea Di Lenarda
- Cardiovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina, Trieste, Italy
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Juffermans JF, Minderhoud SCS, Wittgren J, Kilburg A, Ese A, Fidock B, Zheng YC, Zhang JM, Blanken CPS, Lamb HJ, Goeman JJ, Carlsson M, Zhao S, Planken RN, van Ooij P, Zhong L, Chen X, Garg P, Emrich T, Hirsch A, Töger J, Westenberg JJM. Multicenter Consistency Assessment of Valvular Flow Quantification With Automated Valve Tracking in 4D Flow CMR. JACC Cardiovasc Imaging 2021; 14:1354-1366. [PMID: 33582060 DOI: 10.1016/j.jcmg.2020.12.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 11/18/2020] [Accepted: 12/11/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVES This study determined: 1) the interobserver agreement; 2) valvular flow variation; and 3) which variables independently predicted the variation of valvular flow quantification from 4-dimensional (4D) flow cardiac magnetic resonance (CMR) with automated retrospective valve tracking at multiple sites. BACKGROUND Automated retrospective valve tracking in 4D flow CMR allows consistent assessment of valvular flow through all intracardiac valves. However, due to the variance of CMR scanners and protocols, it remains uncertain if the published consistency holds for other clinical centers. METHODS Seven sites each retrospectively or prospectively selected 20 subjects who underwent whole heart 4D flow CMR (64 patients and 76 healthy volunteers; aged 32 years [range 24 to 48 years], 47% men, from 2014 to 2020), which was acquired with locally used CMR scanners (scanners from 3 vendors; 2 1.5-T and 5 3-T scanners) and protocols. Automated retrospective valve tracking was locally performed at each site to quantify the valvular flow and repeated by 1 central site. Interobserver agreement was evaluated with intraclass correlation coefficients (ICCs). Net forward volume (NFV) consistency among the valves was evaluated by calculating the intervalvular variation. Multiple regression analysis was performed to assess the predicting effect of local CMR scanners and protocols on the intervalvular inconsistency. RESULTS The interobserver analysis demonstrated strong-to-excellent agreement for NFV (ICC: 0.85 to 0.96) and moderate-to-excellent agreement for regurgitation fraction (ICC: 0.53 to 0.97) for all sites and valves. In addition, all observers established a low intervalvular variation (≤10.5%) in their analysis. The availability of 2 cine images per valve for valve tracking compared with 1 cine image predicted a decreasing variation in NFV among the 4 valves (beta = -1.3; p = 0.01). CONCLUSIONS Independently of locally used CMR scanners and protocols, valvular flow quantification can be performed consistently with automated retrospective valve tracking in 4D flow CMR.
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Affiliation(s)
- Joe F Juffermans
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands.
| | - Savine C S Minderhoud
- Department of Cardiology and Radiology and Nuclear Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Johan Wittgren
- Department of Clinical Sciences Lund, Clinical Physiology, Lund University, Skane University Hospital, Lund, Sweden
| | - Anton Kilburg
- Department of Radiology, University Medical Center Mainz, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Amir Ese
- Department of Radiology, University Medical Center Mainz, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Benjamin Fidock
- Department of Infection, Immunity, and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Yu-Cong Zheng
- Department of MRI, Fuwai Hospital, National Center of Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jun-Mei Zhang
- National Heart Centre Singapore; Duke-NUS Medical School Singapore, National University of Singapore, Singapore
| | - Carmen P S Blanken
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location Academic Medical Center, Amsterdam, the Netherlands
| | - Hildo J Lamb
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Jelle J Goeman
- Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands
| | - Marcus Carlsson
- Department of Clinical Sciences Lund, Clinical Physiology, Lund University, Skane University Hospital, Lund, Sweden
| | - Shihua Zhao
- Department of MRI, Fuwai Hospital, National Center of Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - R Nils Planken
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location Academic Medical Center, Amsterdam, the Netherlands
| | - Pim van Ooij
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location Academic Medical Center, Amsterdam, the Netherlands
| | - Liang Zhong
- National Heart Centre Singapore; Duke-NUS Medical School Singapore, National University of Singapore, Singapore
| | - Xiuyu Chen
- Department of MRI, Fuwai Hospital, National Center of Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Pankaj Garg
- Department of Infection, Immunity, and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Tilman Emrich
- Department of Radiology, University Medical Center Mainz, Johannes Gutenberg-University Mainz, Mainz, Germany; German Center for Cardiovascular Research (DZHK), partner site Rhine-Main, Mainz, Germany
| | - Alexander Hirsch
- Department of Cardiology and Radiology and Nuclear Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Johannes Töger
- Department of Clinical Sciences Lund, Clinical Physiology, Lund University, Skane University Hospital, Lund, Sweden
| | - Jos J M Westenberg
- Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
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Hu L, Ouyang R, Sun A, Wang Q, Guo C, Peng Y, Qin Y, Zhang Y, Xiang Y, Zhong Y. Pulmonary artery hemodynamic assessment of blood flow characteristics in repaired tetralogy of Fallot patients versus healthy child volunteers. Quant Imaging Med Surg 2020; 10:921-933. [PMID: 32489917 DOI: 10.21037/qims.2020.03.23] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background This study aimed to assess the severity of helix and vortex flow in pulmonary artery hemodynamic using 4-dimensional flow cardiac magnetic resonance (4D flow CMR) in patients with repaired tetralogy of Fallot (rTOF) and healthy child volunteers and to explore the relationship between pulmonary hemodynamic changes and right heart function. Methods CMR studies were performed in 25 rTOF patients (15 M/10 F; 8.44±4.52 years) and 10 normal child volunteers (7 M/3 F; 8.2±1.22 years) on 3.0T MR scanners. Cardiac function was calculated in the patient and control groups. Systolic diameter, peak velocity, net flow, and regurgitation was quantified in the main pulmonary artery (MPA) plane, left pulmonary artery (LPA) plane, and right pulmonary artery (RPA) plane. The relationship between the hemodynamic parameters and quantitative flow indices and right ventricular (RV) function were analyzed through simple linear regression analysis using Pearson R-values. We analyzed differences in flow patterns between the 2 groups for the same slice. According to the severity of the helix and vortex flow in the 4D flow CMR, we categorized rTOF patients into the following groups: group 1, severe flow grading; group 2, mild flow grading; group 3, no flow grading; the control cases with no flow grade were included in group 4. We compared RV cardiac function, wall shear stress (WSS), and viscous energy loss (EL) between group 1+2 and group 3+4 using unpaired t-test analysis for normally distributed data and the Mann-Whitney test for non-normally distributed continuous variables. Results RV end-diastolic volume index (EDVi) (127.8±36.13 vs. 83.11±6.18, respectively; P<0.001), RV end-systolic volume index (ESVi) (65.14±27.02 vs. 36.13±5.95, respectively; P<0.001), and ejection fraction (EF) (49.97±6.39 vs. 56.71±4.56, respectively; P=0.006,) were significantly different between the groups. The rTOF diameters of the MPA and RPA were significantly larger than those of the control group (19.74±4.01 vs. 14.97±2.37 for MPA, P=0.001; 12.04±3.28 vs. 8.99±1.23 for RPA, P=0.004, respectively). There were correlations between peak WSS and pulmonary regurgitation (PR) in the MPA (R=0.48, P=0.014), correlations between peak systolic EL and RVEDV (R=0.51, P=0.008), and between peak systolic EL and RVESV (R=0.51, P=0.009). The peak systole and diastole WSS of group 1+2 were significantly different compared to group 3+4 in the MPA (P<0.05). The peak systole and diastole EL of group 1+2 was significantly different from group 3+4 in the MPA (P<0.05). The peak systole EL of group 1+2 was significantly different from group 3+4 in the RPA (P<0.01). Conclusions Increased peak WSS and EL were associated with pulmonary hemodynamic changes in the MPA and RPA. There might be an earlier marker of evolving hemodynamic inefficiency than that in traditional parameters. The better understanding of pulmonary artery hemodynamic assessment in rTOF may lead to a greater insight into pulmonary artery (PA)-RV interactions and how they ultimately impact RV function.
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Affiliation(s)
- Liwei Hu
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Rongzhen Ouyang
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Aimin Sun
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Qian Wang
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Chen Guo
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Yafeng Peng
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Yan Qin
- Department of Cardiovascular and Thoracic Surgery, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Yong Zhang
- MR research, GE Healthcare, Shanghai 201203, China
| | - Yang Xiang
- J.C. Wu Center for Aerodynamics, School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yumin Zhong
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
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Sturla F, Piatti F, Jaworek M, Lucherini F, Pluchinotta FR, Siryk SV, Giese D, Vismara R, Tasca G, Menicanti L, Redaelli A, Lombardi M. 4D Flow MRI hemodynamic benchmarking of surgical bioprosthetic valves. Magn Reson Imaging 2020; 68:18-29. [PMID: 31981709 DOI: 10.1016/j.mri.2020.01.006] [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: 10/15/2019] [Revised: 12/23/2019] [Accepted: 01/19/2020] [Indexed: 11/20/2022]
Abstract
PURPOSE We exploited 4-dimensional flow magnetic resonance imaging (4D Flow), combined with a standardized in vitro setting, to establish a comprehensive benchmark for the systematic hemodynamic comparison of surgical aortic bioprosthetic valves (BPVs). MATERIALS AND METHODS 4D Flow analysis was performed on two small sizes of three commercialized pericardial BPVs (Trifecta™ GT, Carpentier-Edwards PERIMOUNT Magna and Crown PRT®). Each BPV was tested over a clinically pertinent range of continuous flow rates within an in vitro MRI-compatible system, equipped with pressure transducers. In-house 4D Flow post-processing of the post-valvular velocity field included the quantification of BPV effective orifice area (EOA), transvalvular pressure gradients (TPG), kinetic energy and viscous energy dissipation. RESULTS The 4D Flow technique effectively captured the 3-dimensional flow pattern of each device. Trifecta exhibited the lowest range of velocity and kinetic energy, maximized EOA (p < 0.0001) and minimized TPGs (p ≤ 0.015) if compared with Magna and Crown, these reporting minor EOA difference s (p ≥ 0.042) and similar TPGs (p ≥ 0.25). 4D Flow TPGs estimations strongly correlated against ground-truth data from pressure transducers; viscous energy dissipation proved to be inversely proportional to the fluid jet penetration. CONCLUSION The proposed 4D Flow analysis pinpointed consistent hemodynamic differences among BPVs, highlighting the not negligible effect of device size on the fluidynamic outcomes. The efficacy of non-invasive 4D Flow MRI protocol could shed light on how standardize the comparison among devices in relation to their actual hemodynamic performances and improve current criteria for their selection.
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Affiliation(s)
- Francesco Sturla
- 3D and Computer Simulation Laboratory, IRCCS Policlinico San Donato, San Donato Milanese, Italy.
| | - Filippo Piatti
- 3D and Computer Simulation Laboratory, IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Michal Jaworek
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Federico Lucherini
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Francesca R Pluchinotta
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy; Multimodality Cardiac Imaging, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy; Department of Pediatric and Adult Congenital Heart Disease, IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Sergii V Siryk
- CONCEPT Lab, Istituto Italiano di Tecnologia, Genova, Italy
| | | | - Riccardo Vismara
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Giordano Tasca
- Cardiac Surgery Unit, Heart Health Center, King Saud Medical City, Riyadh, Saudi Arabia
| | - Lorenzo Menicanti
- Department of Cardiovascular Disease, IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Alberto Redaelli
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Massimo Lombardi
- Multimodality Cardiac Imaging, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy
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20
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Diagnostic and prognostic significance of cardiovascular vortex formation. J Cardiol 2019; 74:403-411. [DOI: 10.1016/j.jjcc.2019.05.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 05/07/2019] [Indexed: 12/16/2022]
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21
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On the computation of hemodynamic forces in the heart chambers. J Biomech 2019; 95:109323. [DOI: 10.1016/j.jbiomech.2019.109323] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/06/2019] [Accepted: 08/23/2019] [Indexed: 11/17/2022]
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Abstract
Patients with heart failure show myocardial, valvular, and electrical dysfunction, which results in enlarged cardiac chambers and increased intracardiac volume and pressure. Intracardiac flow analysis can provide information regarding the shape and wall properties, chamber dimensions, and flow efficiency throughout the cardiac cycle. There is increasing interest in vortex flow analysis for patients with heart failure to overcome limitations of conventional parameters. In conjunction with the conventional structural and functional parameters, vortex flow analysis-guided treatment in heart failure might be a novel option for cardiac physicians.
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Affiliation(s)
- In-Cheol Kim
- Division of Cardiology, Keimyung University Dongsan Medical Center, 56 Dalsung-ro Jung-gu, Daegu 41931, Republic of Korea
| | - Geu-Ru Hong
- Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 50 Yonsei-ro, Seodae mun-gu, Seoul 03722, Republic of Korea.
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Arvidsson PM, Töger J, Pedrizzetti G, Heiberg E, Borgquist R, Carlsson M, Arheden H. Hemodynamic forces using four-dimensional flow MRI: an independent biomarker of cardiac function in heart failure with left ventricular dyssynchrony? Am J Physiol Heart Circ Physiol 2018; 315:H1627-H1639. [DOI: 10.1152/ajpheart.00112.2018] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Patients with heart failure with left ventricular (LV) dyssynchrony often do not respond to cardiac resynchronization therapy (CRT), indicating that the pathophysiology is insufficiently understood. Intracardiac hemodynamic forces computed from four-dimensional (4-D) flow MRI have been proposed as a new measure of cardiac function. We therefore aimed to investigate how hemodynamic forces are altered in LV dyssynchrony. Thirty-one patients with heart failure and LV dyssynchrony and 39 control subjects underwent cardiac MRI with the acquisition of 4-D flow. Hemodynamic forces were computed using Navier-Stokes equations and integrated over the manually delineated LV volume. The ratio between transverse (lateral-septal and inferior-anterior) and longitudinal (apical-basal) forces was calculated for systole and diastole separately and compared with QRS duration, aortic valve opening delay, global longitudinal strain, and ejection fraction (EF). Patients exhibited hemodynamic force patterns that were significantly altered compared with control subjects, including loss of longitudinal forces in diastole (force ratio, control subjects vs. patients: 0.32 vs. 0.90, P < 0.0001) and increased transverse force magnitudes. The systolic force ratio was correlated with global longitudinal strain and EF ( P < 0.01). The diastolic force ratio separated patients from control subjects (area under the curve: 0.98, P < 0.0001) but was not correlated to other dyssynchrony measures ( P > 0.05 for all). Hemodynamic forces by 4-D flow represent a new approach to the quantification of LV dyssynchrony. Diastolic force patterns separate healthy from diseased ventricles. Different force patterns in patients indicate the possible use of force analysis for risk stratification and CRT implantation guidance. NEW & NOTEWORTHY In this report, we demonstrate that patients with heart failure with left ventricular dyssynchrony exhibit significantly altered hemodynamic forces compared with normal. Force patterns in patients mechanistically reflect left ventricular dysfunction on the organ level, largely independent of traditional dyssynchrony measures. Force analysis may help clinical decision making and could potentially be used to improve therapy outcomes.
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Affiliation(s)
- Per M. Arvidsson
- Lund University, Department of Clinical Sciences Lund, Clinical Physiology, Skane University Hospital, Lund, Sweden
| | - Johannes Töger
- Lund University, Department of Clinical Sciences Lund, Clinical Physiology, Skane University Hospital, Lund, Sweden
| | - Gianni Pedrizzetti
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy
| | - Einar Heiberg
- Lund University, Department of Clinical Sciences Lund, Clinical Physiology, Skane University Hospital, Lund, Sweden
- Department of Biomedical Engineering, Lund University, Faculty of Engineering, Lund, Sweden
| | - Rasmus Borgquist
- Lund University, Department of Cardiology, Arrhythmia Clinic, Skane University Hospital, Lund, Sweden
| | - Marcus Carlsson
- Lund University, Department of Clinical Sciences Lund, Clinical Physiology, Skane University Hospital, Lund, Sweden
| | - Håkan Arheden
- Lund University, Department of Clinical Sciences Lund, Clinical Physiology, Skane University Hospital, Lund, Sweden
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24
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Sjöberg P, Töger J, Hedström E, Arvidsson P, Heiberg E, Arheden H, Gustafsson R, Nozohoor S, Carlsson M. Altered biventricular hemodynamic forces in patients with repaired tetralogy of Fallot and right ventricular volume overload because of pulmonary regurgitation. Am J Physiol Heart Circ Physiol 2018; 315:H1691-H1702. [PMID: 30265559 DOI: 10.1152/ajpheart.00330.2018] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Intracardiac hemodynamic forces have been proposed to influence remodeling and be a marker of ventricular dysfunction. We aimed to quantify the hemodynamic forces in patients with repaired tetralogy of Fallot (rToF) to further understand the pathophysiological mechanisms as this could be a potential marker for pulmonary valve replacement (PVR) in these patients. Patients with rToF and pulmonary regurgitation (PR) > 20% ( n = 18) and healthy control subjects ( n = 15) underwent MRI, including four-dimensional flow. A subset of patients ( n = 8) underwent PVR and MRI after surgery. Time-resolved hemodynamic forces were quantified using 4D-flow data and indexed to ventricular volume. Patients had higher systolic and diastolic left ventricular (LV) hemodynamic forces compared with control subjects in the lateral-septal/LV outflow tract ( P = 0.011 and P = 0.0031) and inferior-anterior ( P < 0.0001 and P < 0.0001) directions, which are forces not aligned with blood flow. Forces did not change after PVR. Patients had higher RV diastolic forces compared with control subjects in the diaphragm-right ventricular (RV) outflow tract (RVOT; P < 0.001) and apical-basal ( P = 0.0017) directions. After PVR, RV systolic forces in the diaphragm-RVOT direction decreased ( P = 0.039) to lower levels than in control subjects ( P = 0.0064). RV diastolic forces decreased in all directions ( P = 0.0078, P = 0.0078, and P = 0.039) but were still higher than in control subjects in the diaphragm-RVOT direction ( P = 0.046). In conclusion, patients with rToF and PR had LV hemodynamic forces less aligned with intraventricular blood flow compared with control subjects and higher diastolic RV forces along the regurgitant flow direction in the RVOT and that of tricuspid inflow. Remaining force differences in the LV and RV after PVR suggest that biventricular pumping does not normalize after surgery. NEW & NOTEWORTHY Biventricular hemodynamic forces in patients with repaired tetralogy of Fallot and pulmonary regurgitation were quantified for the first time. Left ventricular hemodynamic forces were less aligned to the main blood flow direction in patients compared with control subjects. Higher right ventricular forces were seen along the pulmonary regurgitant and tricuspid inflow directions. Differences in forces versus control subjects remain after pulmonary valve replacement, suggesting that altered biventricular pumping does not normalize after surgery.
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Affiliation(s)
- Pia Sjöberg
- Lund University, Department of Clinical Sciences, Lund, Clinical Physiology, Skåne University Hospital , Sweden
| | - Johannes Töger
- Lund University, Department of Clinical Sciences, Lund, Clinical Physiology, Skåne University Hospital , Sweden.,Lund University, Department of Biomedical Engineering, Faculty of Engineering , Sweden
| | - Erik Hedström
- Lund University, Department of Clinical Sciences, Lund, Clinical Physiology, Skåne University Hospital , Sweden.,Lund University, Department of Clinical Sciences, Lund, Diagnostic Radiology, Skåne University Hospital , Sweden
| | - Per Arvidsson
- Lund University, Department of Clinical Sciences, Lund, Clinical Physiology, Skåne University Hospital , Sweden
| | - Einar Heiberg
- Lund University, Department of Clinical Sciences, Lund, Clinical Physiology, Skåne University Hospital , Sweden.,Lund University, Department of Biomedical Engineering, Faculty of Engineering , Sweden
| | - Håkan Arheden
- Lund University, Department of Clinical Sciences, Lund, Clinical Physiology, Skåne University Hospital , Sweden
| | - Ronny Gustafsson
- Lund University, Department of Clinical Sciences, Lund, Cardiothoracic Surgery, Skåne University Hospital , Sweden
| | - Shahab Nozohoor
- Lund University, Department of Clinical Sciences, Lund, Cardiothoracic Surgery, Skåne University Hospital , Sweden
| | - Marcus Carlsson
- Lund University, Department of Clinical Sciences, Lund, Clinical Physiology, Skåne University Hospital , Sweden
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