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Inoue N, Ohtani H, Morikawa S, Takayama Y, Ogane T, Hiramatsu T, Kumihashi H, Murohara T. Risk of supranormal left ventricular ejection fraction in patients with aortic stenosis. Clin Cardiol 2024; 47:e24255. [PMID: 38469926 PMCID: PMC10928761 DOI: 10.1002/clc.24255] [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: 01/03/2024] [Revised: 02/22/2024] [Accepted: 03/01/2024] [Indexed: 03/13/2024] Open
Abstract
BACKGROUND Cardiovascular events are increasing in patients with supranormal left ventricular ejection fraction (snLVEF). However, the effect of snLVEF in patients with aortic stenosis (AS) remains unclear, especially in patients with moderate AS. HYPOTHESIS This study aimed to evaluate the prognosis of mortality and heart failure (HF) in patients with LVEF ≥ 50% and moderate or severe AS. METHODS This retrospective study targeted patients with moderate or severe AS and LVEF > 50%. LVEF of 50%-65% was classified as normal LVEF (nLVEF, nEF group) and >65% as snLVEF (snEF group). AS severity was stratified based on the aortic valve area into moderate (1.0-1.5 cm²) and severe (<1.0 cm²). Primary outcomes included all-cause mortality and HF hospitalization. RESULTS A total of 226 participants were included in this study. There were 67 and 65 participants with moderate AS in snEF (m-snEF) and nEF groups (m-nEF), respectively, and 41 and 53 participants with severe AS in the snEF (s-snEF) and nEF groups (s-nEF), respectively. During the observation period (median: 554 days), the primary composite outcome occurred in 108 individuals. Cox hazard analysis revealed no significant differences among the four groups in primary composite outcomes. With respect to HF hospitalization, the adjusted hazard ratios (95% confidence intervals) with m-snEF as the reference were as follows: m-nEF, 0.41 (0.19-0.89); s-nEF, 1.43 (0.76-2.67); and s-snEF, 1.83 (1.00-3.35). CONCLUSIONS The risk of HF hospitalization for m-snLVEF was higher than m-nLVEF and not significantly different from s-nLVEF.
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Affiliation(s)
- Naoya Inoue
- Department of CardiologyChutoen General Medical Center, KakegawaShizuokaJapan
- Department of CardiologyNagoya University Graduate School of MedicineNagoyaAichiJapan
| | - Hayato Ohtani
- Division of Cardiology, Internal Medicine IIIHamamatsu University School of MedicineShizuokaHamamatsuJapan
| | - Shuji Morikawa
- Department of CardiologyChutoen General Medical Center, KakegawaShizuokaJapan
- Department of CardiologyNagoya University Graduate School of MedicineNagoyaAichiJapan
| | - Yohei Takayama
- Department of CardiologyChutoen General Medical Center, KakegawaShizuokaJapan
- Department of CardiologyNagoya University Graduate School of MedicineNagoyaAichiJapan
| | - Takashi Ogane
- Department of CardiologyChutoen General Medical Center, KakegawaShizuokaJapan
| | - Takehiro Hiramatsu
- Department of CardiologyChutoen General Medical Center, KakegawaShizuokaJapan
- Department of CardiologyNagoya University Graduate School of MedicineNagoyaAichiJapan
| | - Hiroki Kumihashi
- Department of CardiologyChutoen General Medical Center, KakegawaShizuokaJapan
- Department of CardiologyNagoya University Graduate School of MedicineNagoyaAichiJapan
| | - Toyoaki Murohara
- Department of CardiologyNagoya University Graduate School of MedicineNagoyaAichiJapan
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Gallet R, Su JB, Corboz D, Chiaroni PM, Bizé A, Dai J, Panel M, Boucher P, Pallot G, Brehat J, Sambin L, Thery G, Mouri N, de Pommereau A, Denormandie P, Germain S, Lacampagne A, Teiger E, Marbán E, Ghaleh B. Three-vessel coronary infusion of cardiosphere-derived cells for the treatment of heart failure with preserved ejection fraction in a pre-clinical pig model. Basic Res Cardiol 2023; 118:26. [PMID: 37400630 DOI: 10.1007/s00395-023-00995-2] [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: 09/30/2022] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 07/05/2023]
Abstract
Heart failure with preserved ejection fraction (HFpEF) is a major public health concern. Its outcome is poor and, as of today, barely any treatments have been able to decrease its morbidity or mortality. Cardiosphere-derived cells (CDCs) are heart cell products with anti-fibrotic, anti-inflammatory and angiogenic properties. Here, we tested the efficacy of CDCs in improving left ventricular (LV) structure and function in pigs with HFpEF. Fourteen chronically instrumented pigs received continuous angiotensin II infusion for 5 weeks. LV function was investigated through hemodynamic measurements and echocardiography at baseline, after 3 weeks of angiotensin II infusion before three-vessel intra-coronary CDC (n = 6) or placebo (n = 8) administration and 2 weeks after treatment (i.e., at completion of the protocol). As expected, arterial pressure was significantly and similarly increased in both groups. This was accompanied by LV hypertrophy that was not affected by CDCs. LV systolic function remained similarly preserved during the whole protocol in both groups. In contrast, LV diastolic function was impaired (increases in Tau, LV end-diastolic pressure as well as E/A, E/E'septal and E/E'lateral ratios) but CDC treatment significantly improved all of these parameters. The beneficial effect of CDCs on LV diastolic function was not explained by reduced LV hypertrophy or increased arteriolar density; however, interstitial fibrosis was markedly reduced. Three-vessel intra-coronary administration of CDCs improves LV diastolic function and reduces LV fibrosis in this hypertensive model of HFpEF.
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Affiliation(s)
- Romain Gallet
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
- Assistance Publique-Hôpitaux de Paris, Hôpital Henri Mondor, Service de Cardiologie, Créteil, France
| | - Jin-Bo Su
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Daphné Corboz
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Paul-Matthieu Chiaroni
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
- Assistance Publique-Hôpitaux de Paris, Hôpital Henri Mondor, Service de Cardiologie, Créteil, France
| | - Alain Bizé
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Jianping Dai
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Mathieu Panel
- PhyMedExp, Université de Montpellier, INSERM U1046, CNRS UMR 9214, Montpellier, France
| | - Pierre Boucher
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, PSL Research University, Paris, France
| | - Gaëtan Pallot
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, PSL Research University, Paris, France
| | - Juliette Brehat
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Lucien Sambin
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Guillaume Thery
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Nadir Mouri
- Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Département de biochimie-pharmacologie-biologie moléculaire-génétique médicale, Créteil, France
| | - Aurélien de Pommereau
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Pierre Denormandie
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Stéphane Germain
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, PSL Research University, Paris, France
| | - Alain Lacampagne
- PhyMedExp, Université de Montpellier, INSERM U1046, CNRS UMR 9214, Montpellier, France
| | - Emmanuel Teiger
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
- Assistance Publique-Hôpitaux de Paris, Hôpital Henri Mondor, Service de Cardiologie, Créteil, France
| | - Eduardo Marbán
- Smidt Heart Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Bijan Ghaleh
- Inserm U955-IMRB, UPEC, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France.
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Cioffi G, Battiston R, Mancusi C, Di Lenarda A, Faganello G, Aurigemma GP, Tarantini L, Pulignano G, Cioffi V, de Simone G. Prognostic Stratification of Clinically Stable Patients with Heart Failure by Echocardiographic Pressure/Volume Loop Model. J Am Soc Echocardiogr 2023; 36:746-759. [PMID: 36791831 DOI: 10.1016/j.echo.2023.02.006] [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: 02/20/2022] [Revised: 01/08/2023] [Accepted: 02/05/2023] [Indexed: 02/16/2023]
Abstract
BACKGROUND Pressure/volume (P/V) loops provide useful information on left ventricular performance and prognosis in patients with heart failure (HF) but do not lend themselves to routine clinical practice. The authors developed a noninvasive method to compute individualized P/V loops to predict adverse clinical outcomes in patients with stable HF, which the authors believe can be used clinically. METHODS A derivation cohort (n = 443 patients) was used to develop an echocardiography P/V loop model, using brachial arterial pressure and trans-thoracic two-dimensional Doppler echocardiographic data. Each patient's P/V loop was depicted as an irregular pentagon, and a centroid was derived for each loop. The centroid distance (CD) from a reference centroid (derived from 101 healthy control subjects) was computed. This model was prospectively applied to 435 patients who constituted the validation cohort. The study end point was a composite of cardiac death or hospitalization for HF among study patients. RESULTS In the derivation cohort, CD was threefold greater among patients who experienced adverse events than those who did not. During a follow-up period of 30 months (15-45 months), event rates were 35% (72 of 206 patients) and 12% (29 of 237 patients P < .001), respectively, among patients with CD > 33 mL/mm Hg and those with CD ≤33 mL/mm Hg (prognostic cutoff derived by receiver operating characteristic analysis). Multivariate Cox analysis identified CD as an independent predictor of adverse outcome (hazard ratio, 1.61; 95% CI, 1.03-2.50) independently of left ventricular end-diastolic volume, pulmonary capillary wedge pressure, and left ventricular ejection fraction. These conclusions were confirmed in the validation cohort. CONCLUSIONS The authors propose a method to create a noninvasive P/V loop and its centroid. These data provide useful pathophysiologic and prognostic information in patients with HF.
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Affiliation(s)
- Giovanni Cioffi
- Cardiac Rehabilitation Centre, San Pancrazio Hospital, Trento, Italy; Rheumatology Section, Department of Internal Medicine, University of Verona and Azienda Ospedaliera Universitaria Integrata of Verona, Verona, Italy.
| | - Roberto Battiston
- Department of Experimental Physics, University of Trento, Trento, Italy
| | - Costantino Mancusi
- Department of Advanced Biomedical Sciences, Federico II University Hospital, Naples, Italy
| | | | | | - Gerard P Aurigemma
- Division of Cardiovascular Medicine, Department of Medicine, UMass Chan Medical School, Worcester, Massachusetts
| | | | - Giovanni Pulignano
- Department of Cardiology, Azienda Ospedaliera San Camillo Forlanini, Rome, Italy
| | - Viola Cioffi
- Department of Experimental Physics, University of Trento, Trento, Italy
| | - Giovanni de Simone
- Department of Advanced Biomedical Sciences, Federico II University Hospital, Naples, Italy
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Li Z, Wu Y, Du B, Yu X, Wang H, Niu Y, Wang J, Chen S, Sun K. Associations of maternal gestational diabetes mellitus with alterations in cardiovascular system in early childhood. Diabetes Metab Res Rev 2022; 38:e3551. [PMID: 35638862 DOI: 10.1002/dmrr.3551] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 03/15/2022] [Accepted: 04/25/2022] [Indexed: 11/07/2022]
Abstract
AIMS The association of maternal gestational diabetes mellitus (GDM) with childhood cardiovascular alterations is not well established. This study aims to test the hypothesis that prenatal exposure to GDM is associated with vascular and cardiac alterations in early childhood. METHODS In a population-based prospective cohort among 1094 mothers and their offspring, GDM was diagnosed according to the International Association of Diabetes and Pregnancy Study Groups criteria. Childhood blood pressure (BP) measurement, echocardiography and vascular ultrasound were performed using standardised methods at 4 years old. The associations between maternal GDM and childhood cardiovascular outcomes were modelled using linear regression and binary logistic regression. Mediation analysis was conducted to test the potential mediators. RESULTS Maternal GDM was associated with higher systolic BP (SBP; β, 1.20; [0.11, 2.28]), lower left ventricular end-diastolic diameter (LVEDD; β, -0.36; [-0.71, -0.01]), lower end-diastolic volume (EDV; β, -1.42; [-2.71, -0.13]) and increased risk of high blood pressure (HBP, OR = 1.522; 95% CI, 1.023 to 2.264) in offspring at the age of 4 years. After stratification by sex, the association remained strong only in male offspring (SBP: β, 1.94; [0.37, 3.51]; LVEDD: β, -0.60; [-1.09, -0.12]; EDV: β, -2.09; [-3.86, -0.31]; HBP: OR = 1.797; 95% CI, 1.063 to 3.037) and was independent of maternal and child characteristics. However, carotid intima-media thickness (cIMT) was not associated with maternal GDM. Mediation analysis showed that the effects on childhood cardiovascular alterations were attributable mostly to the direct effects of maternal GDM. CONCLUSIONS Our results provide evidence that maternal GDM is associated with offspring cardiovascular adaptations at preschool age. Further studies are needed to replicate our results and the long-term effect of these adaptations on later cardiovascular risks needs further investigation.
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Affiliation(s)
- Zhuoyan Li
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yujian Wu
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bowen Du
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaodan Yu
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ministry of Education, Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China
| | - Hualing Wang
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yiwei Niu
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian Wang
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sun Chen
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kun Sun
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Vandenheuvel M, Bouchez S, Wouters P, Mauermann E. Assessing Right Ventricular Function in the Perioperative Setting, Part II: What About Catheters? Anesthesiol Clin 2019; 37:697-712. [PMID: 31677686 DOI: 10.1016/j.anclin.2019.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An-depth assessment of right ventricular function is important in a many perioperative settings. After exploring 2-dimensional echo-based evaluation, other proposed monitoring modalities are discussed. Pressure-based methods of right ventricular appraisal is discussed. Flow-based assessment is reviewed. An overview of the state of current right ventricular 3-dimensional echocardiography and its potential to construct clinical pressure-volume loops in conjunction with pressure measurements is provided. An overview of right ventricular assessment modalities that do not rely on 2-dimensional echocardiography is discussed. Tailored selection of monitoring modalities can be of great benefit for the perioperative physician. Integrating modalities offers optimal estimations of right ventricular function.
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Affiliation(s)
- Michael Vandenheuvel
- Department of Anesthesiology and Perioperative Medicine, Ghent University Hospital, C. Heymanslaan 10, Ghent 9000, Belgium
| | - Stefaan Bouchez
- Department of Anesthesiology and Perioperative Medicine, Ghent University Hospital, C. Heymanslaan 10, Ghent 9000, Belgium
| | - Patrick Wouters
- Department of Anesthesiology and Perioperative Medicine, Ghent University Hospital, C. Heymanslaan 10, Ghent 9000, Belgium
| | - Eckhard Mauermann
- Department of Anesthesiology and Perioperative Medicine, Ghent University Hospital, C. Heymanslaan 10, Ghent 9000, Belgium; Department for Anesthesia, Surgical Intensive Care, Prehospital Emergency Medicine and Pain Therapy, Basel University Hospital, Spitalstrasse 21, Basel 4031, Switzerland.
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King JM, Bergeron CA, Taylor CE. Finite state machine implementation for left ventricle modeling and control. Biomed Eng Online 2019; 18:10. [PMID: 30700298 PMCID: PMC6354391 DOI: 10.1186/s12938-019-0628-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 01/16/2019] [Indexed: 11/24/2022] Open
Abstract
Background Simulation of a left ventricle has become a critical facet of evaluating therapies and operations that interact with cardiac performance. The ability to simulate a wide range of possible conditions, changes in cardiac performance, and production of nuisances at transition points enables evaluation of precision medicine concepts that are designed to function through this spectrum. Ventricle models have historically been based on biomechanical analysis, with model architectures constituted of continuous states and not conducive to deterministic processing. Producing a finite-state machine governance of a left ventricle model would enable a broad range of applications: physiological controller development, experimental left ventricle control, and high throughput simulations of left ventricle function. Methods A method for simulating left ventricular pressure-volume control utilizing a preload, afterload, and contractility sensitive computational model is shown. This approach uses a logic-based conditional finite state machine based on the four pressure-volume phases that describe left ventricular function. This was executed with a physical system hydraulic model using MathWorks’ Simulink® and Stateflow tools. Results The approach developed is capable of simulating changes in preload, afterload, and contractility in time based on a patient’s preload analysis. Six pressure–volume loop simulations are presented to include a base-line, preload change only, afterload change only, contractility change only, a clinical control, and heart failure with normal ejection fraction. All simulations produced an error of less than 1 mmHg and 1 mL of the absolute difference between the desired and simulated pressure and volume set points. The acceptable performance of the fixed-timestep architecture in the finite state machine allows for deployment to deterministic systems, such as experimental systems for validation. Conclusions The proposed approach allows for personalized data, revealed through an individualized clinical pressure–volume analysis, to be simulated in silico. The computational model architecture enables this control structure to be executed on deterministic systems that govern experimental left ventricles. This provides a mock circulatory system with the ability to investigate the pathophysiology for a specific individual by replicating the exact pressure–volume relationship defined by their left ventricular functionality; as well as perform predictive analysis regarding changes in preload, afterload, and contractility in time.
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Affiliation(s)
- Jacob M King
- Department of Mechanical Engineering, University of Louisiana at Lafayette, 241 E. Lewis St. RM320, Lafayette, LA, 70503, USA
| | - Clint A Bergeron
- Department of Mechanical Engineering, University of Louisiana at Lafayette, 241 E. Lewis St. RM320, Lafayette, LA, 70503, USA
| | - Charles E Taylor
- Department of Mechanical Engineering, University of Louisiana at Lafayette, 241 E. Lewis St. RM320, Lafayette, LA, 70503, USA.
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Morofuji T, Saito M, Inaba S, Morioka H, Sumimoto T. Prognostic value of proximal left coronary artery flow velocity detected by transthoracic Doppler echocardiography. IJC HEART & VASCULATURE 2018; 19:52-57. [PMID: 29946565 PMCID: PMC6016069 DOI: 10.1016/j.ijcha.2018.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 04/17/2018] [Indexed: 01/19/2023]
Abstract
BACKGROUND Lesions in the proximal left coronary artery (LCA) are associated with a poor prognosis compared with other lesional sites. Transthoracic Doppler echocardiography (TTDE) can help to detect proximal LCA flow, and an accelerated coronary flow velocity (CFV) indicates the presence of proximal LCA lesions. This study aimed to investigate the prognostic value of CFV in the proximal LCA measured by TTDE. METHODS We enrolled 1472 consecutive hemodynamically stable patients with known or suspected heart disease whose CFV was successfully detected using TTDE accompanied by routine echocardiography between 2008 and 2011. The primary outcome was cardiac death (acute myocardial infarction, heart failure, or sudden cardiac death) and patients were followed up over a median of 6.3 years. RESULTS Overall, 42 cardiac deaths (3%) were observed. An increased CFV was significantly associated with the outcome in several models based on potential confounders (age, rate pressure product, Framingham Risk Score, diabetes, coronary artery disease, hemoglobin, brain natriuretic peptide, estimated glomerular filtration rate, left ventricular mass, left ventricular ejection fraction, and E/e'). Using a receiver operating characteristic curve analysis, the optimal cut-off value for the CFV to the association of the outcome was 37 cm/s (area under the curve, 0.70; sensitivity, 82%; specificity, 62%). In sequential Cox proportional hazards models, the CFV added incremental prognostic information to the clinical and basic echocardiographic parameters (chi-squared: 110.7 to 146.6, P < 0.01). CONCLUSIONS An increased CFV in the proximal LCA was associated with cardiac death, incremental to the clinical and basic echocardiographic parameters.
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Affiliation(s)
| | - Makoto Saito
- Department of Cardiology, Kitaishikai Hospital, Ozu, Japan
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Makowski K, Kramarz E, Kamiński G, Grzęda M, Kramarz P, Kade G. Left ventricular end-diastole hemodynamics is strongly associated with spontaneous cardiac baroreflex in humans. Clin Exp Hypertens 2017; 39:619-627. [PMID: 28665712 DOI: 10.1080/10641963.2017.1306538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND In animals, hemodynamic conditions during left ventricular (LV) end-diastole are crucial for the excitation of autonomic afferents distributed throughout cardiac chambers and large thoracic vessels. The objective of the study was to select the echocardiographic indices of LV diastolic function that are the most potent predictors of the heart's spontaneous baroreflex in humans. METHODS In 47 untreated hypertensive patients (26 with normal and 21 with increased left atrium diameter) and 24 healthy controls, baroreflex sensitivity (BRS) was assessed in the low (αLF; 0.04-0.15 Hz) and high frequency (αHF; 0.15-0.4 Hz) components in the supine and during tilting. The [Formula: see text] normalized to LV end-diastolic diameter (the [Formula: see text] index) is a marker of the septum late diastolic distension rate ([Formula: see text] denotes peak late diastolic velocity at the septal mitral annulus) under the corresponding transmitral pressure gradient that determines the peak velocity of blood flow (A) into the LV chamber. RESULTS The [Formula: see text] markedly stronger than [Formula: see text] ratio correlated with the BRS. In the best-fit models of multivariable linear regression, the [Formula: see text] index was the independent predictor of the αLF BRS at tilting (β = -0.3; p = 0.01). Independent of clinical and echocardiographic parameters, the [Formula: see text] index predicted also both the αHF BRS in the supine position (β = -0.23; p = 0.01) and the αHF BRS reinforcement due to increased preload (β = -0.28; p = 0.001). CONCLUSIONS The [Formula: see text] index is a reliable marker of diastolic dysfunction that evokes significant heart's baroreflex impairment and is markedly stronger than [Formula: see text] ratio associated with these systemic consequences of altered LV diastole hemodynamics.
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Affiliation(s)
- Karol Makowski
- a Cardiology Department , Military Institute of Health Services , Warsaw , Poland
| | - Elżbieta Kramarz
- a Cardiology Department , Military Institute of Health Services , Warsaw , Poland
| | - Grzegorz Kamiński
- b Endocrinology Department , Military Institute of Health Services , Warsaw , Poland
| | - Monika Grzęda
- a Cardiology Department , Military Institute of Health Services , Warsaw , Poland
| | - Paulina Kramarz
- c Department of Agriculture and Economics , Agricultural University , Cracow , Poland
| | - Grzegorz Kade
- d Nephrology Department , Military Institute of Health Services , Warsaw , Poland
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Prognosis after acute coronary syndrome in relation with ventricular–arterial coupling and left ventricular strain. Int J Cardiol 2016; 220:343-8. [DOI: 10.1016/j.ijcard.2016.06.173] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 06/24/2016] [Indexed: 12/20/2022]
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10
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Gallet R, Tseliou E, Dawkins J, Middleton R, Valle J, Angert D, Reich H, Luthringer D, Kreke M, Smith R, Marbán L, Marbán E. Intracoronary delivery of self-assembling heart-derived microtissues (cardiospheres) for prevention of adverse remodeling in a pig model of convalescent myocardial infarction. Circ Cardiovasc Interv 2016; 8:CIRCINTERVENTIONS.115.002391. [PMID: 25953823 DOI: 10.1161/circinterventions.115.002391] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Preclinical studies in rodents and pigs indicate that the self-assembling microtissues known as cardiospheres may be more effective than dispersed cardiosphere-derived cells. However, the more desirable intracoronary route has been assumed to be unsafe for cardiosphere delivery: Cardiospheres are large (30-150 μm), raising concerns about likely microembolization. We questioned these negative assumptions by evaluating the safety and efficacy of optimized intracoronary delivery of cardiospheres in a porcine model of convalescent myocardial infarction. METHODS AND RESULTS First, we standardized the size of cardiospheres by modifying culture conditions. Then, dosage was determined by infusing escalating doses of cardiospheres in the left anterior descending artery of naive pigs, looking for acute adverse effects. Finally, in a randomized efficacy study, 14 minipigs received allogeneic cardiospheres (1.3 × 10(6)) or vehicle 1 month after myocardial infarction. Animals underwent magnetic resonance imaging before infusion and 1 month later to assess left ventricular ejection fraction, scar mass, and viable mass. In the dosing study, we did not observe any evidence of microembolization after cardiosphere infusion. In the post-myocardial infarction study, cardiospheres preserved LV function, reduced scar mass and increased viable mass, whereas placebo did not. Moreover, cardiosphere decreased collagen content, and increased vessel densities and myocardial perfusion. Importantly, intracoronary cardiospheres decreased left ventricular end-diastolic pressure and increased cardiac output. CONCLUSIONS Intracoronary delivery of cardiospheres is safe. Intracoronary cardiospheres are also remarkably effective in decreasing scar, halting adverse remodeling, increasing myocardial perfusion, and improving hemodynamic status after myocardial infarction in pigs. Thus, cardiospheres may be viable therapeutic candidates for intracoronary infusion in selected myocardial disorders.
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Affiliation(s)
- Romain Gallet
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.)
| | - Eleni Tseliou
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.)
| | - James Dawkins
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.)
| | - Ryan Middleton
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.)
| | - Jackelyn Valle
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.)
| | - David Angert
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.)
| | - Heidi Reich
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.)
| | - Daniel Luthringer
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.)
| | - Michelle Kreke
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.)
| | - Rachel Smith
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.)
| | - Linda Marbán
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.)
| | - Eduardo Marbán
- From the Cedars-Sinai Heart Institute, Los Angeles, CA (R.G., E.T., J.D., R.M., J.V., D.A., H.R., D.L., M.K., R.S., L.M.); and Capricor Inc, Los Angeles, CA (M.K., R.S., L.M.).
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11
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Itu L, Sharma P, Georgescu B, Kamen A, Suciu C, Comaniciu D. Model based non-invasive estimation of PV loop from echocardiography. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2015; 2014:6774-7. [PMID: 25571551 DOI: 10.1109/embc.2014.6945183] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We introduce a model-based approach for the non-invasive estimation of patient specific, left ventricular PV loops. A lumped parameter circulation model is used, composed of the pulmonary venous circulation, left atrium, left ventricle and the systemic circulation. A fully automated parameter estimation framework is introduced for model personalization, composed of two sequential steps: first, a series of parameters are computed directly, and, next, a fully automatic optimization-based calibration method is employed to iteratively estimate the values of the remaining parameters. The proposed methodology is first evaluated for three healthy volunteers: a perfect agreement is obtained between the computed quantities and the clinical measurements. Additionally, for an initial validation of the methodology, we computed the PV loop for a patient with mild aortic valve regurgitation and compared the results against the invasively determined quantities: there is a close agreement between the time-varying LV and aortic pressures, time-varying LV volumes, and PV loops.
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12
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Mishra RK, Tietjens J, Regan M, Whooley MA, Schiller NB. The Prognostic Utility of Echo-Estimated Left Ventricular End-Diastolic Pressure-Volume Relationship in Stable Coronary Artery Disease: The Heart and Soul Study. Echocardiography 2015; 32:1639-46. [PMID: 25959601 DOI: 10.1111/echo.12955] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND While changes in the left ventricular end-diastolic pressure-volume relationship (LV-EDPVR) can be estimated using echocardiography, their prognostic utility in stable coronary artery disease (CAD) is unknown. METHODS Using echo-estimated LV end-diastolic volume index and diastolic function category, the relative position of the LV-EDPVR was defined in 901 participants with stable CAD as: (1) left-shifted, (2) right-shifted, or (3) intermediate. We then evaluated the association of LV-EDPVR position relative to the intermediate category with time to hospitalization for heart failure (HF) or cardiovascular (CV) death using Cox proportional hazards models. RESULTS During 7.0 ± 3.1 years of follow-up, there were 207 admissions for HF or CV deaths. Both leftward and rightward shifts of LV-EDPVR were associated with a significantly higher risk of HF or CV death (HR 1.73, 95% CI 1.15-2.62 and HR 6.75, 95% CI 4.02-11.31, respectively). In multivariable-adjusted models, these associations were attenuated but remained significant (HR 1.66, 95% CI 1.08-2.55 for left-shifted and HR 4.19, 95% CI 2.32-7.55 for right-shifted). The association of LV-EDPVR with HF or CV death was no longer significant after inclusion of N-terminal pro-brain natriuretic peptide level as a covariate. CONCLUSIONS In stable CAD, echo-estimated leftward and rightward shifts in the LV-EDPVR are associated with HF and CV death. The loss of these associations after adjustment for N-terminal pro-brain natriuretic peptide level suggests that echo-estimated LV-EDPVR captures changes in LV filling pressure at any given LV end-diastolic volume.
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Affiliation(s)
- Rakesh K Mishra
- University of California, San Francisco, San Francisco, California.,San Francisco Veterans Affairs Medical Center, San Francisco, California
| | - Jeremy Tietjens
- University of California, San Francisco, San Francisco, California
| | - Mathilda Regan
- San Francisco Veterans Affairs Medical Center, San Francisco, California
| | - Mary A Whooley
- University of California, San Francisco, San Francisco, California.,San Francisco Veterans Affairs Medical Center, San Francisco, California
| | - Nelson B Schiller
- University of California, San Francisco, San Francisco, California.,San Francisco Veterans Affairs Medical Center, San Francisco, California
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13
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Lei J, Dhamoon AS, Wang J, Iannuzzi M, Liu K. Walking the tightrope: Using quantitative Doppler echocardiography to optimize ventricular filling pressures in patients hospitalized for acute heart failure. EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE 2015; 5:130-40. [PMID: 25694508 DOI: 10.1177/2048872615573517] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 01/28/2015] [Indexed: 01/03/2023]
Affiliation(s)
- Juan Lei
- Department of Cardiology, Sun Yat-Sen Memorial Hospital, China
| | - Amit S Dhamoon
- Department of Medicine, State University of New York, USA
| | - Jingfeng Wang
- Department of Cardiology, Sun Yat-Sen Memorial Hospital, China
| | | | - Kan Liu
- Department of Medicine, State University of New York, USA
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14
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Burgoyne S, Georgakopoulos D, Belenkie I, Tyberg JV. Systemic vascular effects of acute electrical baroreflex stimulation. Am J Physiol Heart Circ Physiol 2014; 307:H236-41. [DOI: 10.1152/ajpheart.00422.2013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We intended to determine if acute baroreflex activation therapy (BAT) increases venous capacitance and aortic conductance. BAT is effective in resistant hypertension, but its effect on the systemic vasculature is poorly understood. Left ventricular (LV) and aortic pressures and subdiaphragmatic aortic and caval flows (ultrasonic) were measured in six anesthetized dogs. Changes in abdominal blood volume (Vabdominal) were estimated as the integrated difference in abdominal aortic inflow and caval outflow. An electrode was implanted on the right carotid sinus. Data were measured during control and BAT. Next, sodium nitroprusside (SNP) was infused and BAT was subsequently added. Finally, angiotensin II (ANG II) was infused, and three increased BAT currents were added. We found that BAT decreased mean aortic pressure (PAo) by 22.5 ± 1.3 mmHg ( P < 0.001) and increased aortic conductance by 16.2 ± 4.9% ( P < 0.01) and Vabdominal at a rate of 2.2 ± 0.6 ml·kg−1·min−1 ( P < 0.01). SNP decreased PAo by 17.4 ± 0.7 mmHg ( P < 0.001) and increased Vabdominal at a rate of 2.2 ± 0.7 ml·kg−1·min−1 ( P < 0.05). During the SNP infusion, BAT decreased PAo further, by 26.0 ± 2.1 mmHg ( P < 0.001). ANG II increased PAo by 40.4 ± 3.5 mmHg ( P = 0.001). When an increased BAT current was added, PAo decreased to baseline ( P < 0.01) while aortic conductance increased from 62.3 ± 5.2% to 80.2 ± 3.3% ( P < 0.05) of control. Vabdominal increased at a rate of 1.8 ± 0.9 ml·kg−1·min−1 ( P < 0.01), reversing the ANG II effects. In conclusion, BAT increases arterial conductance, decreases PAo, and increases venous capacitance even in the presence of powerful vasoactive drugs. Increasing venous capacitance may be an important effect of BAT in hypertension.
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Affiliation(s)
- Steven Burgoyne
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | | | - Israel Belenkie
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Cardiac Sciences, University of Calgary, Calgary, Alberta, Canada
| | - John V. Tyberg
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
- Department of Cardiac Sciences, University of Calgary, Calgary, Alberta, Canada
- Department of Physiology/Pharmacology, University of Calgary, Calgary, Alberta, Canada; and
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15
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Burkhoff D. Pressure-volume loops in clinical research: a contemporary view. J Am Coll Cardiol 2013; 62:1173-6. [PMID: 23770176 DOI: 10.1016/j.jacc.2013.05.049] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 05/20/2013] [Indexed: 10/26/2022]
Affiliation(s)
- Daniel Burkhoff
- Division of Cardiology, Columbia University, New York, New York.
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