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Brown AL, Salvador M, Shi L, Pfaller MR, Hu Z, Harold KE, Hsiai T, Vedula V, Marsden AL. A Modular Framework for Implicit 3D-0D Coupling in Cardiac Mechanics. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 2024; 421:116764. [PMID: 38523716 PMCID: PMC10956732 DOI: 10.1016/j.cma.2024.116764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
In numerical simulations of cardiac mechanics, coupling the heart to a model of the circulatory system is essential for capturing physiological cardiac behavior. A popular and efficient technique is to use an electrical circuit analogy, known as a lumped parameter network or zero-dimensional (0D) fluid model, to represent blood flow throughout the cardiovascular system. Due to the strong physical interaction between the heart and the blood circulation, developing accurate and efficient numerical coupling methods remains an active area of research. In this work, we present a modular framework for implicitly coupling three-dimensional (3D) finite element simulations of cardiac mechanics to 0D models of blood circulation. The framework is modular in that the circulation model can be modified independently of the 3D finite element solver, and vice versa. The numerical scheme builds upon a previous work that combines 3D blood flow models with 0D circulation models (3D fluid - 0D fluid). Here, we extend it to couple 3D cardiac tissue mechanics models with 0D circulation models (3D structure - 0D fluid), showing that both mathematical problems can be solved within a unified coupling scheme. The effectiveness, temporal convergence, and computational cost of the algorithm are assessed through multiple examples relevant to the cardiovascular modeling community. Importantly, in an idealized left ventricle example, we show that the coupled model yields physiological pressure-volume loops and naturally recapitulates the isovolumic contraction and relaxation phases of the cardiac cycle without any additional numerical techniques. Furthermore, we provide a new derivation of the scheme inspired by the Approximate Newton Method of Chan (1985), explaining how the proposed numerical scheme combines the stability of monolithic approaches with the modularity and flexibility of partitioned approaches.
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Affiliation(s)
- Aaron L. Brown
- Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
- Stanford Cardiovascular Institute, Stanford, CA, USA
| | - Matteo Salvador
- Institute for Computational and Mathematical Engineering, Stanford University, Stanford, CA, USA
- Stanford Cardiovascular Institute, Stanford, CA, USA
- Department of Pediatrics (Cardiology), Stanford University, Stanford, CA, USA
| | - Lei Shi
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
- Department of Mechanical Engineering, Kennesaw State University, Marietta, GA, USA
| | - Martin R. Pfaller
- Institute for Computational and Mathematical Engineering, Stanford University, Stanford, CA, USA
- Stanford Cardiovascular Institute, Stanford, CA, USA
- Department of Pediatrics (Cardiology), Stanford University, Stanford, CA, USA
| | - Zinan Hu
- Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
| | - Kaitlin E. Harold
- Department of Computer Science, Stanford University, Stanford, CA, USA
| | - Tzung Hsiai
- Department of Bioengineering, University of California Los Angeles, Los Angeles, CA, USA
| | - Vijay Vedula
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
| | - Alison L. Marsden
- Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
- Institute for Computational and Mathematical Engineering, Stanford University, Stanford, CA, USA
- Stanford Cardiovascular Institute, Stanford, CA, USA
- Department of Pediatrics (Cardiology), Stanford University, Stanford, CA, USA
- Department of Bioengineering, Stanford University, Stanford, CA, USA
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Hosono Y, Takahashi K, Shigemitsu S, Akimoto S, Ifuku M, Yazaki K, Wakatsuki H, Yaguchi A, Tomita O, Fujimura J, Saito M, Yoneoka D, Shimizu T. Assessment of anthracycline-induced cardiotoxicity in childhood cancer survivors during long-term follow-up using strain analysis and intraventricular pressure gradient measurements. Heart Vessels 2024; 39:105-116. [PMID: 37973710 DOI: 10.1007/s00380-023-02312-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 09/06/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND Cardiac dysfunction due to cardiotoxicity from anthracycline chemotherapy is a leading cause of morbidity and mortality in childhood cancer survivors (CCS), and the cumulative incidence of cardiac events has continued to increase. This study identifies an adequate indicator of cardiac dysfunction during long-term follow-up. PROCEDURE In total, 116 patients (median age: 15.5 [range: 4.7-40.2] years) with childhood cancer who were treated with anthracycline were divided into three age groups for analysis (C1: 4-12 years of age, C2: 13-18 years of age, C3: 19-40 years of age), and 116 control patients of similar ages were divided into three corresponding groups (N1, N2, and N3). Layer-specific strains were assessed for longitudinal strain (LS) and circumferential strain (CS). The total and segmental intraventricular pressure gradients (IVPG) were also calculated based on Doppler imaging of the mitral inflow using Euler's equation. RESULTS Conventional echocardiographic parameters were not significantly different between the patients and controls. All layers of the LS and inner and middle layers of the basal and papillary CS in all ages and all IVPGs in C2 and C3 decreased compared to those of corresponding age groups. Interestingly, basal CS and basal IVPG in CCS showed moderate correlation and both tended to rapidly decrease with aging. Furthermore, basal IVPG and anthracycline dose showed significant correlations. CONCLUSIONS Basal CS and total and basal IVPGs may be particularly useful indicators of cardiotoxicity in long-term follow-up.
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Affiliation(s)
- Yu Hosono
- Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Ken Takahashi
- Department of Pediatrics, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, Urayasu-Shi, Chiba-Ken, 279-0021, Japan.
| | - Sachie Shigemitsu
- Faculty of Medicine, Department of Pediatrics, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Satoshi Akimoto
- Department of Pediatrics, Juntendo University Nerima Hospital, 3-1-10 Takanodai, Nerima-Ku, Tokyo, 177-8521, Japan
| | - Mayumi Ifuku
- Faculty of Medicine, Department of Pediatrics, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Kana Yazaki
- Faculty of Medicine, Department of Pediatrics, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Hisako Wakatsuki
- Faculty of Medicine, Department of Pediatrics, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Akinori Yaguchi
- Faculty of Medicine, Department of Pediatrics, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Osamu Tomita
- Faculty of Medicine, Department of Pediatrics, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Junya Fujimura
- Faculty of Medicine, Department of Pediatrics, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Masahiro Saito
- Faculty of Medicine, Department of Pediatrics, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
| | - Daisuke Yoneoka
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 102-0071, Japan
| | - Toshiaki Shimizu
- Faculty of Medicine, Department of Pediatrics, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan
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Mandour AS, Farag A, Helal MAY, El-Masry G, Al-Rejaie S, Takahashi K, Yoshida T, Hamabe L, Tanaka R. Non-Invasive Assessment of the Intraventricular Pressure Using Novel Color M-Mode Echocardiography in Animal Studies: Current Status and Future Perspectives in Veterinary Medicine. Animals (Basel) 2023; 13:2452. [PMID: 37570261 PMCID: PMC10417806 DOI: 10.3390/ani13152452] [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: 03/27/2023] [Revised: 06/06/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
The assessment of diastolic function has received great interest in order to comprehend its crucial role in the pathophysiology of heart failure and for the early identification of cardiac events. Silent changes in the intraventricular flow (IVF) dynamics occur before the deterioration of the cardiac wall, although they cannot be detected using conventional echocardiography. Collective information on left ventricular (LV) pressures throughout the cardiac cycle has great value when dealing with patients with altered hemodynamics. Accurate pressure measurement inside the ventricle can be obtained by invasive methods to determine the LV diastolic pressures, which reflect the myocardial relaxation and compliance. However, catheterization is only feasible in the laboratory setting and is not suitable for clinical use due to its disadvantages. In contrast, echocardiography is simple, safe, and accessible. Color M-mode echocardiography (CMME) is an advanced cardiac evaluation technique that can measure the intraventricular pressure differences (IVPDs) and intraventricular pressure gradients (IVPGs) based on the Doppler shift of the IVF. Recently, the assessment of IVPD and IVPG has gained growing interest in the cardiovascular literature in both animal and human studies as a non-invasive method for the early diagnosis of cardiac dysfunctions, especially diastolic ones. The usability of IVPD and IVPG has been reported in various surgically induced heart failure or pharmacologically altered cardiac functions in rats, dogs, cats, and goats. This report aims to give an overview of the current studies of CMME-derived IVPD and IVPG in animal studies and its feasibility for clinical application in veterinary practice and to provide the prospects of the technique's ability to improve our understanding.
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Affiliation(s)
- Ahmed S. Mandour
- Department of Animal Medicine (Internal Medicine), Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
| | - Ahmed Farag
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Mahmoud A. Y. Helal
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
- Animal Medicine Department, Faculty of Veterinary Medicine, Benha University, Moshtohor, Benha 13736, Egypt
| | - Gamal El-Masry
- Agricultural Engineering Department, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt
| | - Salim Al-Rejaie
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh 11564, Saudi Arabia
| | - Ken Takahashi
- Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Bunkyo, Tokyo 113-8421, Japan
| | - Tomohiko Yoshida
- Department of Veterinary Surgery, Division of Veterinary Research, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan
| | - Lina Hamabe
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
| | - Ryou Tanaka
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
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Farag A, Mandour AS, Kaneda M, Elfadadny A, Elhaieg A, Shimada K, Tanaka R. Effect of trehalose on heart functions in rats model after myocardial infarction: assessment of novel intraventricular pressure and heart rate variability. Front Cardiovasc Med 2023; 10:1182628. [PMID: 37469485 PMCID: PMC10353053 DOI: 10.3389/fcvm.2023.1182628] [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: 03/09/2023] [Accepted: 06/09/2023] [Indexed: 07/21/2023] Open
Abstract
Background Myocardial infarctions remain a leading cause of global deaths. Developing novel drugs to target cardiac remodeling after myocardial injury is challenging. There is an increasing interest in exploring natural cardioprotective agents and non-invasive tools like intraventricular pressure gradients (IVPG) and heart rate variability (HRV) analysis in myocardial infarctions. Trehalose (TRE), a natural disaccharide, shows promise in treating atherosclerosis, myocardial infarction, and neurodegenerative disorders. Objectives The objective of this study was to investigate the effectiveness of TRE in improving cardiac functions measured by IVPG and HRV and reducing myocardial remodeling following myocardial infarction in rat model. Methods Rats were divided into three groups: sham, myocardial infarction (MI), and trehalose-treated MI (TRE) groups. The animals in the MI and TRE groups underwent permanent ligation of the left anterior descending artery. The TRE group received 2% trehalose in their drinking water for four weeks after the surgery. At the end of the experiment, heart function was assessed using conventional echocardiography, novel color M-mode echocardiography for IVPG evaluation, and HRV analysis. After euthanasia, gross image scoring, histopathology, immunohistochemistry, and quantitative real-time PCR were performed to evaluate inflammatory reactions, oxidative stress, and apoptosis. Results The MI group exhibited significantly lower values in multiple IVPG parameters. In contrast, TRE administration showed an ameliorative effect on IVPG changes, with results comparable to the sham group. Additionally, TRE improved HRV parameters, mitigated morphological changes induced by myocardial infarction, reduced histological alterations in wall mass, and suppressed inflammatory reactions within the infarcted heart tissues. Furthermore, TRE demonstrated antioxidant, anti-apoptotic and anti-fibrotic properties. Conclusion The investigation into the effect of trehalose on a myocardial infarction rat model has yielded promising outcomes, as evidenced by improvements observed through conventional echocardiography, histological analysis, and immunohistochemical analysis. While minor trends were noticed in IVPG and HRV measurements. However, our findings offer valuable insights and demonstrate a correlation between IVPG, HRV, and other traditional markers of echo assessment in the myocardial infarction vs. sham groups. This alignment suggests the potential of IVPG and HRV as additional indicators for future research in this field.
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Affiliation(s)
- Ahmed Farag
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Ahmed S. Mandour
- Department of Animal Medicine (Internal Medicine), Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Masahiro Kaneda
- Laboratory of Veterinary Anatomy, Division of Animal Life Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Ahmed Elfadadny
- Department of Animal Internal Medicine, Faculty of Veterinary Medicine, Damanhur University, Damanhur El-Beheira, Egypt
| | - Asmaa Elhaieg
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Kazumi Shimada
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Ryou Tanaka
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan
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Yamamoto Y, Takahashi K, Takamizu A, Ogawa T, Yoshida K, Itakura A. Normative change with gestation in fetal intraventricular pressure difference with color M-mode Doppler echocardiography. J Obstet Gynaecol Res 2023. [PMID: 37190899 DOI: 10.1111/jog.15672] [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: 11/25/2022] [Accepted: 04/28/2023] [Indexed: 05/17/2023]
Abstract
AIM The intraventricular pressure difference (IVPD) is the pressure difference in early diastole from the base to the apex of the ventricle. It is a useful marker for evaluating diastolic function because of its role as a suction force. This study investigated the changes in total and segmental IVPDs in normal fetuses throughout gestation to obtain normative data equations. METHODS One hundred thirty-seven healthy pregnant women at 12-40 weeks of gestation were prospectively enrolled to evaluate IVPD. The color M mode was performed, and the image was evaluated using our own code to calculate the IVPD. Segmental IVPD was divided into mid to apex and base. Pearson's correlation coefficient was used to evaluate this relationship. RESULTS There was a significant, positive relationship between IVPD and gestational age in both ventricles (right ventricle [RV]: r = 0.800, left ventricle [LV]: r = 0.818). As for segmental IVPD, basal and mid-apical IVPD also increased with gestation in both ventricles (RV: basal, r = 0.627; mid-apical, r = 0.705; LV: basal r = 0.758; mid-apical, r = 0.756). IVPG, which was calculated as IVPD/ventricular length, also showed a weak, positive relationship with gestation in both ventricles (RV r = 0.351, p < 0.001; LV r = 0.373, p < 0.001). CONCLUSION The total and segmental IVPDs significantly increased linearly through time.
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Affiliation(s)
- Yuka Yamamoto
- Department of Obstetrics and Gynecology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Ken Takahashi
- Department of Pediatrics, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Ai Takamizu
- Department Obstetrics and Gynecology, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Takahisa Ogawa
- Department of Global Health Promotion, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan
| | - Koyo Yoshida
- Department Obstetrics and Gynecology, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Atsuo Itakura
- Department of Obstetrics and Gynecology, Juntendo University Faculty of Medicine, Tokyo, Japan
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Mandour AS, Samir H, Yoshida T, Matsuura K, Hamabe L, Shimada K, Abdelmageed HA, Elbadawy M, Uemura A, Takahashi K, Watanabe G, Tanaka R. Novel color M-mode echocardiography for non-invasive assessment of the intraventricular pressure in goats: Feasibility, repeatability, and the effect of sedation. Front Vet Sci 2022; 9:935437. [PMID: 36277071 PMCID: PMC9582648 DOI: 10.3389/fvets.2022.935437] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 08/22/2022] [Indexed: 11/07/2022] Open
Abstract
Background The intraventricular pressure difference (IVPD) and intraventricular pressure gradients (IVPG), estimated from color M-mode echocardiography (CMME) of the transmitral flow, have been introduced as novel indices for the evaluation of heart functions. Until now, no study demonstrated the feasibility of the CMME approach to measure IVPD and IVPG in any farm animals. The aim of this study was to assess the feasibility and repeatability of CMME-derived IVPD and IVPG variables in goats and explore the effect of sedation on the measured variables. Materials and methods Sixteen male Shiba goats were included in this study and underwent conventional echocardiography. Eight goats were used in the repeatability of IVPD/IVPG variables. Another eight goats were used to evaluate the effect of sedation by xylazine on IVPD/IVPG measurements. CMME between the base and the apex of the left ventricle was carried out. The IVPD and IVPG were analyzed using in-house code software. The IVPD and IVPG were expressed as total, basal, mid-to-apical, mid, and apical segments. Data analysis including the imaging quality score (IQS), repeatability, variability, intraclass correlation coefficient (ICC), as well as the effect size of sedation on the measured variables was calculated. Results IVPD and IVPG variables from CMME were feasible in all goats. Low to moderate variability of IVPD and IVPG variables was observed (CV 95% <25%) except for the apical IVPD and apical IVPG. The IVPD/IVPG measurements were repeatable without a significant effect of animal or time on the obtained measurements. The overall ICC was higher than 0.75 in all variables except for the apical segment. Xylazine administration reduced the total, basal, and mid parts of IVPD and IVPG with a large effect size (biserial ranked correlation; rc > 0.8). Conclusion We reported, for the first time, IVPD and IVPG measurements by CMME in goats. The assessment of IVPD and IVPG by CMME is feasible in goats which can be evaluated in further cardiovascular or pharmacological studies in this species.
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Affiliation(s)
- Ahmed S. Mandour
- Department of Veterinary Medicine (Internal Medicine), Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt,Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan,*Correspondence: Ahmed S. Mandour
| | - Haney Samir
- Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Tomohiko Yoshida
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Katsuhiro Matsuura
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Lina Hamabe
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Kazumi Shimada
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Hend A. Abdelmageed
- Ismailia Laboratory, Animal Health Research Institute, Agriculture Research Center, First District, Ismailia, Egypt
| | - Mohamed Elbadawy
- Department of Pharmacology, Faculty of Veterinary Medicine, Benha University, Toukh, Egypt,Laboratory of Pharmacology, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Akiko Uemura
- Division of Veterinary Research, Department of Veterinary Surgery, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Ken Takahashi
- Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Gen Watanabe
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Ryou Tanaka
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan,Ryou Tanaka
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Hirose M, Mandour AS, Goya S, Hamabe L, Matsuura K, Yoshida T, Watanabe M, Shimada K, Uemura A, Takahashi K, Tanaka R. Color M-Mode Echocardiography for Non-Invasive Assessment of the Intraventricular Pressure in Dogs Before and After Ductus Arteriosus Occlusion: A Retrospective Study. Front Vet Sci 2022; 9:908829. [PMID: 35903130 PMCID: PMC9315367 DOI: 10.3389/fvets.2022.908829] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/06/2022] [Indexed: 11/15/2022] Open
Abstract
Background Novel non-invasive evaluation of the intraventricular pressure differences and gradients (IVPD and IVPG) by color M-mode echocardiography (CMME) is a promising method in diastolic function evaluation. Patent ductus arteriosus (PDA) is a congenital heart defect which is associated with increased preload. The present work provides a clinical trial for the assessment of IVPD and IVPG changes in dogs before and after surgical occlusion of PDA. Materials and Methods A total of 12 client-owned dogs were enrolled in this study. PDA was confirmed using echocardiography, and all dogs underwent PDA occlusion. Conventional echocardiography and CMME were conducted on each patient on the operation day (Pre-PDA) and 48 h after its occlusion (Post-PDA). The total IVPD and total IVPG, as well as segmental intraventricular pressure (basal, mid-to-apical, mid, and apical) were measured from Euler's equation using specific software (MATLAB). Data were analyzed for variability and for the difference between pre- and post-PDA. The effect of PDA occlusion on the measured variables was calculated using biserial ranked correlation (rc). Results There was a significant reduction in end-diastolic volume, fraction shortening, stroke volume, and mitral inflow velocities (early and late) after PDA closure. CMME was feasible in all dogs, and the CMME indices showed moderate variability, except for the apical segment of IVPD and IVPG. After PDA closure, in comparison with the pre-PDA occlusion, there was a significant reduction in total IVPD (2.285 ± 0.374 vs. 1.748 ± 0.436 mmHg; P = 0.014), basal IVPD (1.177 ± 0.538 vs. 0.696 ± 0.144 mmHg; P = 0.012), total IVPG (1.141 ± 0.246 vs. 0.933 ± 0.208 mmHg; P = 0.032), and basal IVPG (0.578 ± 0.199 vs. 0.377 ± 0.113 mmHg; P = 0.001); meanwhile, mid, mid-to-apical, and apical segments of both IVPD and IVPG showed non-significant difference. The magnitude of PDA occlusion on the measured variables was clinically relevant and associated with a large effect size on total and basal IVPD and IVPG (rc > 0.6). Conclusion The current clinical study revealed matched response of IVPD and IVPG to the reduced preload rather than left ventricular relaxation. This result is an initial step in the clinical utility of CMME-derived IVPD and IVPG measurements in the diastolic function evaluation in dogs with PDA that warrants further clinical studies.
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Affiliation(s)
- Miki Hirose
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Ahmed S. Mandour
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
- Department of Animal Medicine (Internal Medicine), Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Seijirow Goya
- Department of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Lina Hamabe
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Katsuhiro Matsuura
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Tomohiko Yoshida
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Momoko Watanabe
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Kazumi Shimada
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Akiko Uemura
- Division of Veterinary Research, Department of Veterinary Surgery, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Ken Takahashi
- Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Bunkyo, Japan
| | - Ryou Tanaka
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo, Japan
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Hu LW, Xiang Y, Qin SY, Ouyang RZ, Liu JL, Peng YF, Xie WH, Zhang Y, Liu H, Zhong YM. Vortex formation time as an index of left ventricular filling efficiency: comparison between children volunteers and patients with tetralogy of Fallot. Transl Pediatr 2022; 11:869-881. [PMID: 35800277 PMCID: PMC9253934 DOI: 10.21037/tp-22-67] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/02/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Vortex formation time (VFT) had been considered a useful marker for assessing diastolic performance. the VFT assessment of diastolic function using four-dimensional (4D) flow cardiovascular magnetic resonance (CMR) has not been used in repair of tetralogy of Fallot (rTOF) patient. The aims of this study were as follows: (I) establish reference ranges for VFT measurements in healthy children and adolescents using 4D flow CMR imaging; and (II) analyze VFT parameters to assess diastole dysfunction in rTOF patients group. METHODS We acquired the CMR data was of 62 healthy participants (aged 6-18 years; male: 40, female: 22) and 20 patients with rTOF (aged 10-13 years; male: 15, female: 5) using 4D flow and cine sequence in routine chamber view. The VFT was calculated based on comparison of different algorithms from cine measurements (VFTvolume) and 4D flow measurements (VFTblood). Then, VFT measurements were compared to subject peak filling rate (PFR), age, and cardiac mass using simple linear regression and multiple regression analyses. Data were also categorized according to age for VFT and cardiac functional assessment comparisons between 3 age groups (Group 1: 6-9 years; Group 2: 10-13 years; Group 3: 14-18 years). The correlation of VFT and cardiac function parameters were analyzed in the rTOF group. RESULTS Normal mean value of VFTvolume and VFTblood were 4.25±0.92 and 3.77±1.11 in healthy children participants. The VFTvolume was correlated with VFTblood (r=0.61, P<0.001). There was a moderately significant correlation between VFTvolume and PFR (r=0.46, P<0.001) and between VFTblood and PFR (r=0.47, P<0.001), age (r=0.41, P=0.002) and left ventricular (LV) mass (r=0.48, P<0.001). Multiple regression analyses demonstrated that VFTvolume was independently associated with PFR (T=2.239; P<0.05) and VFTblood (T=4.361; P<0.001). There was a significant difference in VFTvolume between healthy controls and rTOF patients (5.44±1.93 vs. 4.27±0.88, P=0.018). CONCLUSIONS The VFT measurements showed that the LV that had appropriate space to form the optimal vortex ring in normal children and adolescents aged 6-18 years old. The VFTvolume could potentially be helpful in improving our understanding of LV diastolic dysfunction in rTOF patients.
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Affiliation(s)
- Li-Wei Hu
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yang Xiang
- J.C. Wu Center for Aerodynamics, School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai, China
| | - Su-Yang Qin
- J.C. Wu Center for Aerodynamics, School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai, China
| | - Rong-Zhen Ouyang
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jin-Long Liu
- Department of Cardiovascular and Thoracic Surgery, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ya-Feng Peng
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei-Hui Xie
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yong Zhang
- MR Research, GE Healthcare, Shanghai, China
| | - Hong Liu
- J.C. Wu Center for Aerodynamics, School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai, China
| | - Yu-Min Zhong
- Diagnostic Imaging Center, Shanghai Children's Medical Center Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
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9
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Matsuura K, Bach MB, Takahashi K, Willesen JL, Koch J, Tanaka R. Non-invasive assessment of left ventricular relaxation property using color M-mode-derived intraventricular pressure gradients in cats. J Vet Cardiol 2022; 41:236-248. [DOI: 10.1016/j.jvc.2022.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 11/26/2022]
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10
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Ma D, Mandour AS, Yoshida T, Matsuura K, Shimada K, Kitpipatkun P, Uemura A, Ifuku M, Takahashi K, Tanaka R. Intraventricular pressure gradients change during the development of left ventricular hypertrophy: Effect of salvianolic acid B and beta-blocker. ULTRASOUND : JOURNAL OF THE BRITISH MEDICAL ULTRASOUND SOCIETY 2021; 29:229-240. [PMID: 34777543 DOI: 10.1177/1742271x20987584] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 12/21/2020] [Indexed: 12/19/2022]
Abstract
Introduction Intraventricular pressure gradient is regarded as a non-invasive indicator of diastolic function. Salvianolic acid B (Sal-B), a traditional Asian medicine, revealed its usefulness in myocardial infarction models; however, the hemodynamic effect of salvianolic acid B is still unknown. The present study aimed to investigate the intraventricular pressure gradient changes during the development of left ventricular hypertrophy with or without salvianolic acid B and a beta-blocker. Methods In total, 48 rats were divided into four groups; Sham, Non-treatment, salvianolic acid B, and Carvedilol. Aortic coarctation-induced left ventricular hypertrophy was done in three groups and the treatment was started from the third to the sixth week. Blood pressure, conventional echocardiography, and color M-mode echocardiography for measurement of intraventricular pressure gradient were carried out for six consecutive weeks. Results At 4.5 weeks, the LV mass was elevated in the coarctation groups but the blood pressure was significantly lower in salvianolic acid B and Carvedilol groups (P < 0.05). In the Non-treatment group, the total intraventricular pressure gradient was increased at 4.5 and 6 weeks (2.60 and 2.65, respectively). Meanwhile, the basal intraventricular pressure gradient was elevated at 3 and 6 weeks (1.67 and 1.75) compared with the Sham group. Salvianolic acid B and Carvedilol significantly reduced the basal intraventricular pressure gradient at six weeks compared with the Non-treatment group (1.52 and 1.51 vs 1.75, respectively). Conclusions Salvianolic acid B and Carvedilol promote cardiac function by decreasing the elevated basal intraventricular pressure gradient. The current preclinical results revealed the efficacy of salvianolic acid B as a potential therapy for left ventricular hypertrophy because of the non-blood pressure lowering effect.
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Affiliation(s)
- Danfu Ma
- Departments of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Ahmed S Mandour
- Departments of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Department of Animal Medicine (Internal Medicine), Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Tomohiko Yoshida
- Departments of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Katsuhiro Matsuura
- Departments of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Kazumi Shimada
- Departments of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Pitipat Kitpipatkun
- Departments of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Akiko Uemura
- Departments of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Mayumi Ifuku
- Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Ken Takahashi
- Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Ryou Tanaka
- Departments of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
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11
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Zhong Y, Cai Y, Liu M, Bai W, Wang F, Tang H, Rao L. Left ventricular diastolic pressure gradient and outcome in advanced chronic kidney disease patients with preserved ejection fraction. Int J Cardiovasc Imaging 2021; 37:2663-2673. [PMID: 34286450 DOI: 10.1007/s10554-021-02339-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/02/2021] [Indexed: 02/06/2023]
Abstract
Assessment of left ventricular (LV) diastolic dysfunction is important in patients with chronic kidney disease (CKD). The early diastolic peak intraventricular pressure gradient (IVPG) has a vital role in diastolic function. Relative pressure imaging (RPI) is a new echocardiographic method to quantify IVPG. The purpose of this study was to analyze RPI-derived IVPG in advanced CKD patients with preserved LV ejection fraction. The study population consisted of 51 advanced CKD patients and 39 healthy controls. Patients were stratified by the evidence of heart failure with preserved ejection fraction (HFpEF) into HFpEF group (32 patients) and non-HFpEF group (19 patients). RPI analysis was used to determine the early diastolic LV relative pressure and pressure distribution. The total IVPG and segmental IVPGs corresponding to basal, mid, and apical part of the LV were calculated. Total IVPG, along with apical and mid IVPGs were all significantly reduced in HFpEF Group compared with non-HFpEF Group and controls (all P < 0.05). But no significant difference of total or segmental IVPGs was found between non-HFpEF Group and the controls. Additionally, apical IVPG < 0.02 mmHg/cm (Hazard ratio 9.82, 95 % confidence interval 2.01-48.01, P = 0.005) was the independent risk factor for the composite outcome (mortality and cardiovascular hospitalization) during a median follow-up of 24 months. Advanced CKD patients with HFpEF exhibited decreased apical and mid IVPG of the LV, and the severity of apical IVPG reduction correlated with poor outcome.
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Affiliation(s)
- Yue Zhong
- Department of Cardiology, West China Hospital of Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan, China
| | - Yuyan Cai
- Department of Cardiology, West China Hospital of Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan, China
| | - Mei Liu
- Department of Cardiology, West China Hospital of Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan, China
| | - Wenjuan Bai
- Department of Cardiology, West China Hospital of Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan, China
| | - Fang Wang
- Department of Cardiology, West China Hospital of Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan, China
| | - Hong Tang
- Department of Cardiology, West China Hospital of Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan, China
| | - Li Rao
- Department of Cardiology, West China Hospital of Sichuan University, 37 Guoxue Alley, Chengdu, 610041, Sichuan, China.
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12
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Maekawa M, Minami K, Yoshitani K, Watanabe K, Kanazawa H, Tadokoro N, Fukushima S, Fujita T, Ohnishi Y. Correlation Between Intraventricular Pressure Difference and Indexed Flow of a Left Ventricular Assist Device. J Cardiothorac Vasc Anesth 2021; 35:3626-3630. [PMID: 34130898 DOI: 10.1053/j.jvca.2021.05.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 11/11/2022]
Abstract
OBJECTIVES There is no definitive parameter for left ventricular (LV) preload in patients with a continuous-flow left ventricular assist device (LVAD). The intraventricular pressure difference (IVPD) is the maximum pressure difference between the mitral valve and LV apex during diastole; and, in past studies, the IVPD was influenced by volume loading. The authors hypothesized that IVPD in LVAD patients correlates with indexed LVAD flow and that IVPD can serve as a novel parameter of LV preload in this population. DESIGN A single-center, retrospective, observational study. SETTING A tertiary-care hospital from August 2019 to July 2020. PARTICIPANTS Sixteen ramp tests for adjustment of LVAD pump speed in 14 adult patients undergoing continuous-flow LVAD implantation. INTERVENTIONS Measurement of IVPD during ramp tests. MEASUREMENTS AND MAIN RESULTS LVAD flow and IVPD were measured at each LVAD pump speed during the ramp test for the adjustment of LVAD pump speed after patients came off cardiopulmonary bypass during LVAD implantation. A straight, longitudinal view of the left atrium and left ventricle was obtained, and the pressure difference between the mitral valve and LV apex during diastole was measured by transesophageal echocardiography. The maximum pressure difference during diastole was recorded as IVPD. The relationship between indexed LVAD flow (LVAD flow/body surface area) and IVPD was assessed by a multivariate nonlinear regression analysis with the Huber-White sandwich estimator. IVPD correlated with indexed LVAD flow (p < 0.001). CONCLUSIONS IVPD is a useful indicator of LV preload during LVAD implantation.
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Affiliation(s)
- Masaki Maekawa
- Department of Anesthesiology, Toranomon Hospital, Tokyo, Japan
| | - Kimito Minami
- Department of Surgical Intensive Care, National Cerebral and Cardiovascular Center, Osaka, Japan.
| | - Kenji Yoshitani
- Department of Anesthesiology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Kenji Watanabe
- Department of Anesthesiology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Hiroko Kanazawa
- Department of Anesthesiology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Naoki Tadokoro
- Department of Cardiac Surgery, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Satsuki Fukushima
- Department of Cardiac Surgery, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Tomoyuki Fujita
- Department of Cardiac Surgery, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Yoshihiko Ohnishi
- Department of Anesthesiology, National Cerebral and Cardiovascular Center, Osaka, Japan
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13
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Matsuura K, Shiraishi K, Mandour AS, Sato K, Shimada K, Goya S, Yoshida T, Kitpipatkun P, Hamabe L, Uemura A, Yilmaz Z, Ifuku M, Iso T, Takahashi K, Tanaka R. The Utility of Intraventricular Pressure Gradient for Early Detection of Chemotherapy-Induced Subclinical Cardiac Dysfunction in Dogs. Animals (Basel) 2021; 11:1122. [PMID: 33919889 PMCID: PMC8070943 DOI: 10.3390/ani11041122] [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] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/22/2021] [Accepted: 04/08/2021] [Indexed: 01/04/2023] Open
Abstract
Early detection of doxorubicin (DXR)-induced cardiomyopathy (DXR-ICM) is crucial to improve cancer patient outcomes and survival. In recent years, the intraventricular pressure gradient (IVPG) has been a breakthrough as a sensitive index to assess cardiac function. This study aimed to evaluate the usefulness of IVPG for the early detection of chemotherapy-related cardiac dysfunction. For this purpose, six dogs underwent conventional, speckle tracking, and color M-mode echocardiography concomitantly with pressure-and-volume analysis by conductance catheter. The cardiac function measurements were assessed before DXR administration (baseline, Pre), at the end of treatment protocol (Post), and at 1.5 years follow-up (Post2). The result showed a significant reduction in the left ventricular end-systolic pressure-volume (Emax: 4.4 ± 0.7, 6.1 ± 1.6 vs. 8.4 ± 0.8 mmHg/mL), total-IVPG (0.59 ± 0.12, 0.62 ± 0.15 vs. 0.86 ± 0.12 mmHg), and mid-IVPG (0.28 ± 0.12, 0.31 ± 0.11 vs. 0.48 ± 0.08 mmHg), respectively in Post2 and Post compared with the baseline (p < 0.05). Mid-to-apical IVPG was also reduced in Post2 compared with the baseline (0.29 ± 0.13 vs. 0.51 ± 0.11). Meanwhile, the fraction shortening, ejection fraction, and longitudinal strain revealed no change between groups. Total and mid-IVPG were significantly correlated with Emax (R = 0.49; p < 0.05, both) but only mid-IVPG was a predictor for Emax (R2 = 0.238, p = 0.040). In conclusion, this study revealed that impairment of contractility was the initial changes observed with DXR-ICM in dogs and only IVPG could noninvasively detect subclinical alterations in cardiac function. Color M-mode echocardiography-derived IVPG could be a potential marker for the early detection of doxorubicin cardiomyopathy.
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Affiliation(s)
- Katsuhiro Matsuura
- VCA Japan Shiraishi Animal Hospital, Saitama 350-1304, Japan;
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan; (K.S.); (K.S.); (K.S.); (S.G.); (T.Y.); (P.K.); (L.H.)
| | - Kenjirou Shiraishi
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan; (K.S.); (K.S.); (K.S.); (S.G.); (T.Y.); (P.K.); (L.H.)
| | - Ahmed S. Mandour
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan; (K.S.); (K.S.); (K.S.); (S.G.); (T.Y.); (P.K.); (L.H.)
- Department of Animal Medicine (Internal Medicine), Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
| | - Kotomi Sato
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan; (K.S.); (K.S.); (K.S.); (S.G.); (T.Y.); (P.K.); (L.H.)
| | - Kazumi Shimada
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan; (K.S.); (K.S.); (K.S.); (S.G.); (T.Y.); (P.K.); (L.H.)
| | - Seijirow Goya
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan; (K.S.); (K.S.); (K.S.); (S.G.); (T.Y.); (P.K.); (L.H.)
| | - Tomohiko Yoshida
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan; (K.S.); (K.S.); (K.S.); (S.G.); (T.Y.); (P.K.); (L.H.)
| | - Pitipat Kitpipatkun
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan; (K.S.); (K.S.); (K.S.); (S.G.); (T.Y.); (P.K.); (L.H.)
| | - Lina Hamabe
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan; (K.S.); (K.S.); (K.S.); (S.G.); (T.Y.); (P.K.); (L.H.)
| | - Akiko Uemura
- Department of Veterinary Surgery, Division of Veterinary Research, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan;
| | - Zeki Yilmaz
- Department of Internal Medicine, Faculty of Veterinary Medicine, Uludag University, Bursa 16120, Turkey;
| | - Mayumi Ifuku
- Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan; (M.I.); (T.I.); (K.T.)
| | - Takeshi Iso
- Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan; (M.I.); (T.I.); (K.T.)
| | - Ken Takahashi
- Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan; (M.I.); (T.I.); (K.T.)
| | - Ryou Tanaka
- Veterinary Surgery, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan; (K.S.); (K.S.); (K.S.); (S.G.); (T.Y.); (P.K.); (L.H.)
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14
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Kitpipatkun P, Matsuura K, Shimada K, Uemura A, Goya S, Yoshida T, Ma D, Takahashi K, Tanaka R. Key factors of diastolic dysfunction and abnormal left ventricular relaxation in diabetic rats. J Med Ultrason (2001) 2020; 47:347-356. [PMID: 32306191 DOI: 10.1007/s10396-020-01021-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 03/08/2020] [Indexed: 12/13/2022]
Abstract
PURPOSE To study the diastolic functions using color Doppler M-mode (CDMM) for noninvasive analysis of the intraventricular pressure difference (IVPD) in diabetic rats. METHODS Two equal groups of rats were included: control and streptozotocin-induced DM (n = 15). The cardiac functions were examined monthly using conventional echocardiography and CDMM with a specific MATLAB software. Echocardiography was performed under 2% isoflurane mask inhalation. Five months thereafter, all rats were killed for macroscopic and microscopic examinations of the cardiac fibrosis. RESULTS DM rats showed higher systolic blood pressure and diastolic dysfunction, i.e., decreases in several parameters such as E, E/A, TDIs, and IVPDs, compared to the controls. Moreover, obvious cardiac fibrosis was seen in perivascular and interstitial tissues, but there were no notable differences in terms of gross lesions. CONCLUSIONS Because of the noninvasive nature of CDMM, IVPD and other conventional echocardiographic parameters can be used as reliable indicators generally for evaluating cardiac function and particularly the change in intraventricular pressure.
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Affiliation(s)
- Pitipat Kitpipatkun
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Katsuhiro Matsuura
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Kazumi Shimada
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Akiko Uemura
- Animal Medical Centor, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Seijirow Goya
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Tomohiko Yoshida
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Danfu Ma
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Ken Takahashi
- Department of Pediatrics and Adolescent Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Ryou Tanaka
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan.
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15
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Ogilvie LM, Edgett BA, Huber JS, Platt MJ, Eberl HJ, Lutchmedial S, Brunt KR, Simpson JA. Hemodynamic assessment of diastolic function for experimental models. Am J Physiol Heart Circ Physiol 2020; 318:H1139-H1158. [PMID: 32216614 DOI: 10.1152/ajpheart.00705.2019] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Traditionally, the evaluation of cardiac function has focused on systolic function; however, there is a growing appreciation for the contribution of diastolic function to overall cardiac health. Given the emerging interest in evaluating diastolic function in all models of heart failure, there is a need for sensitivity, accuracy, and precision in the hemodynamic assessment of diastolic function. Hemodynamics measure cardiac pressures in vivo, offering a direct assessment of diastolic function. In this review, we summarize the underlying principles of diastolic function, dividing diastole into two phases: 1) relaxation and 2) filling. We identify parameters used to comprehensively evaluate diastolic function by hemodynamics, clarify how each parameter is obtained, and consider the advantages and limitations associated with each measure. We provide a summary of the sensitivity of each diastolic parameter to loading conditions. Furthermore, we discuss differences that can occur in the accuracy of diastolic and systolic indices when generated by automated software compared with custom software analysis and the magnitude each parameter is influenced during inspiration with healthy breathing and a mild breathing load, commonly expected in heart failure. Finally, we identify key variables to control (e.g., body temperature, anesthetic, sampling rate) when collecting hemodynamic data. This review provides fundamental knowledge for users to succeed in troubleshooting and guidelines for evaluating diastolic function by hemodynamics in experimental models of heart failure.
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Affiliation(s)
- Leslie M Ogilvie
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada.,IMPART Investigator Team Canada, Saint John, New Brunswick, Canada
| | - Brittany A Edgett
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada.,Department of Pharmacology, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada.,IMPART Investigator Team Canada, Saint John, New Brunswick, Canada
| | - Jason S Huber
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Mathew J Platt
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Hermann J Eberl
- Department of Mathematics and Statistics, University of Guelph, Guelph, Ontario, Canada
| | - Sohrab Lutchmedial
- Department of Pharmacology, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada.,Department of Cardiology, New Brunswick Heart Center, Saint John Regional Hospital, Horizon Health Network, Saint John, New Brunswick, Canada
| | - Keith R Brunt
- Department of Pharmacology, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada.,IMPART Investigator Team Canada, Saint John, New Brunswick, Canada
| | - Jeremy A Simpson
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada.,IMPART Investigator Team Canada, Saint John, New Brunswick, Canada
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16
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Matsuura K, Sato K, Shimada K, Goya S, Uemura A, Iso T, Yazaki K, Yilmaz Z, Takahashi K, Tanaka R. Changes in left ventricular blood flow during diastole due to differences in chamber size in healthy dogs. Sci Rep 2020; 10:1106. [PMID: 31980646 PMCID: PMC6981119 DOI: 10.1038/s41598-019-57180-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 12/03/2019] [Indexed: 11/09/2022] Open
Abstract
Vorticity is a novel index that reflects diastolic function of left ventricle. The size of the ventricle can influence the ventricular diastolic blood flow. We evaluated effect of ventricular size on diastolic function and diastolic intracardiac blood flow using a particular species of dogs, which has a wide range of body size. Vector flow mapping was used for evaluation of intracardiac blood flow, and intraventricular pressure gradient (IVPG) was used for evaluation of diastolic function. 58 dogs weighing 1.3-42.3 kg were included in this study. Vorticity was found to be inversely proportional to the length of the ventricular chamber. Intraventricular pressure difference was positively correlated with the length of the left ventricle, whereas IVPG was not. This study showed that the vorticity is influenced by the size of the left ventricle independently of other factors. To evaluate the hemodynamic state of each individual appropriately by using vorticity and IVPD, ventricular size should be taken into account especially in the field of veterinary medicine and human pediatric and adolescent cardiology.
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Affiliation(s)
- Katsuhiro Matsuura
- Tokyo University of Agriculture and Technology, Department of Veterinary Surgery, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-0052, Japan
| | - Kotomi Sato
- Tokyo University of Agriculture and Technology, Department of Veterinary Surgery, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-0052, Japan
| | - Kazumi Shimada
- Tokyo University of Agriculture and Technology, Department of Veterinary Surgery, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-0052, Japan
| | - Seijirow Goya
- Tokyo University of Agriculture and Technology, Department of Veterinary Surgery, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-0052, Japan
| | - Akiko Uemura
- Teikyo University of Science, Department of Animal Science, 2-2-1, Senjyusakuragi, Adachi-ku, Tokyo, 120-0045, Japan
| | - Takeshi Iso
- Juntendo University Graduate School of Medicine, Department of Pediatrics and Adolescent Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Kana Yazaki
- Juntendo University Graduate School of Medicine, Department of Pediatrics and Adolescent Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Zeki Yilmaz
- Uludag University, Department of Internal Medicine, Özlüce Mahallesi, Veterinerlik Fak. Hayvan Hst., 16120, Nilüfer, Bursa, Turkey
| | - Ken Takahashi
- Juntendo University Graduate School of Medicine, Department of Pediatrics and Adolescent Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Ryou Tanaka
- Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Animal Medical Center, 3-5-8 Saiwaicho, 183-8509, Fuchu-shi, Tokyo, Japan.
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