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He X, Bender M, Gross C, Narayanaswamy K, Laufer G, Jakubek S, Bonderman D, Roehrich M, Karner B, Zimpfer D, Granegger M. Left Atrial Decompression With the HeartMate3 in Heart Failure With Preserved Ejection Fraction: Virtual Fitting and Hemodynamic Analysis. ASAIO J 2024; 70:107-115. [PMID: 37831817 DOI: 10.1097/mat.0000000000002074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2023] Open
Abstract
Effective treatment of heart failure with preserved ejection fraction (HFpEF) remains an unmet medical need. Although left atrial decompression using mechanical circulatory support devices was previously suggested, the heterogeneous HFpEF population and the lack of tailored devices have prevented the translation into clinical practice. This study aimed to evaluate the feasibility of left atrial decompression in HFpEF patients with a HeartMate 3 (HM3, Abbott Inc, Chicago, USA) in silico and in vitro . Anatomic compatibility of the HM3 pump was assessed by virtual device implantation into the left atrium through the left atrial appendage (LAA) and left atrial posterior wall (LAPW) of 10 HFpEF patients. Further, the efficacy of left atrial decompression was investigated experimentally in a hybrid mock loop, replicating the hemodynamics of an HFpEF phenotype at rest and exercise conditions. Virtual implantation without substantial intersection with surrounding tissues was accomplished through the LAA in 90% and 100% through the LAPW. Hemodynamic analysis in resting conditions demonstrated normalization of left atrial pressures without backflow at a pump speed of around 5400 rpm, whereas a range of 6400-7400 rpm was required during exercise. Therefore, left atrial decompression with the HM3 may be feasible in terms of anatomic compatibility and hemodynamic efficacy.
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Affiliation(s)
- Xiangyu He
- From the Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Moritz Bender
- From the Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
- Division of Control and Process Automation, Institute of Mechanics and Mechatronics, TU Wien, Vienna, Austria
| | - Christoph Gross
- From the Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | | | - Günther Laufer
- From the Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Stefan Jakubek
- Division of Control and Process Automation, Institute of Mechanics and Mechatronics, TU Wien, Vienna, Austria
| | | | - Michael Roehrich
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
| | - Barbara Karner
- From the Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
- Division of Cardiac Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Daniel Zimpfer
- From the Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
- Division of Cardiac Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Marcus Granegger
- From the Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
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2
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Pawar SG, Saravanan PB, Gulati S, Pati S, Joshi M, Salam A, Khan N. Study the relationship between left atrial (LA) volume and left ventricular (LV) diastolic dysfunction and LV hypertrophy: Correlate LA volume with cardiovascular risk factors. Dis Mon 2024; 70:101675. [PMID: 38262769 DOI: 10.1016/j.disamonth.2024.101675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Heart failure (HF) with normal ejection fraction - the isolated diastolic heart failure, depicts increasing prevalence and health care burden in recent times. Having less mortality rate compared to systolic heart failure but high morbidity, it is evolving as a major cardiac concern. With increasing clinical use of Left atrial volume (LAV) quantitation in clinical settings, LAV has emerged as an important independent predictor of cardiovascular outcome in HF with normal ejection fraction. This article is intended to review the diastolic and systolic heart failure, their association with left atrial volume, in depth study of Left atrial function dynamics with determinants of various functional and structural changes.
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Affiliation(s)
| | | | | | | | - Muskan Joshi
- Tbilisi State Medical University, Tbilisi, Georgia
| | - Ajal Salam
- Government Medical College, Kottayam, Kerala, India
| | - Nida Khan
- Jinnah Sindh Medical University, Karachi, Pakistan
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3
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Miyagi C, Kuban BD, Flick CR, Polakowski AR, Miyamoto T, Karimov JH, Starling RC, Fukamachi K. Left atrial assist device for heart failure with preserved ejection fraction: initial results with torque control mode in diastolic heart failure model. Heart Fail Rev 2023; 28:287-296. [PMID: 33931816 DOI: 10.1007/s10741-021-10117-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/26/2021] [Indexed: 12/29/2022]
Abstract
A novel pump, the left atrial assist device (LAAD), is a device specifically for the treatment of heart failure with preserved ejection fraction (HFpEF). The LAAD is a mixed-flow pump that is implanted in the mitral position and delivers blood from the left atrium to the left ventricle. During the development process, we aimed to explore whether device activation in torque control (TC) mode would improve the function of the LAAD. The TC mode causes adjustment of the pump speed automatically during each cardiac cycle in order to maintain a specified torque. In this study, we tested four different TC settings (TC modes 0.9, 1.0, 1.25, and 1.5) using an in vitro mock circulatory loop. Mild, moderate, and severe diastolic heart failure (DHF) conditions, as well as normal heart condition, were simulated with the four TC modes. Also, we evaluated the LAAD in vivo with three calves. The LAAD was implanted at the mitral position with four TC settings (TC modes 0.9, 1.0, 1.1, 1.2). With LAAD support, the in vitro cardiac output and aortic pressure recovered to normal heart levels at TC 1.25 and 1.5 even under severe DHF conditions with little pump regurgitation. The TC mode tested in vivo with three calves, and it also showed favorable result without elevating the left ventricular end-diastolic pressure. These initial in vitro and in vivo results suggest that the TC mode could be potentially effective, and the LAAD could be a treatment option for HFpEF patients.
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Affiliation(s)
- Chihiro Miyagi
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Barry D Kuban
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA. .,Electronics Core, Medical Device Solutions, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA.
| | - Christine R Flick
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Anthony R Polakowski
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Takuma Miyamoto
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jamshid H Karimov
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Randall C Starling
- Department of Cardiovascular Medicine, Miller Family Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH, USA.,Kaufman Center for Heart Failure Treatment and Recovery, Cleveland Clinic, Cleveland, OH, USA
| | - Kiyotaka Fukamachi
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
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4
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King SA, Salerno A, Downing JV, Wynne ZR, Parker JT, Miller TE, Tewelde SZ. POCUS for Diastolic Dysfunction: A Review of the Literature. POCUS JOURNAL 2023; 8:88-92. [PMID: 37152335 PMCID: PMC10155731 DOI: 10.24908/pocus.v8i1.15803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Emergency and critical care physicians frequently encounter patients presenting with dyspnea and normal left ventricular systolic function who may benefit from early diastolic evaluation to determine acute patient management. The current American Society of Echocardiography Guidelines approach to diastolic evaluation is often impractical for point of care ultrasound (POCUS) evaluation, and few studies have evaluated the potential use of a simplified approach. This article reviews the literature on the use of a simplified diastolic evaluation to assist in determining acute patient management.
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Affiliation(s)
- Samantha A King
- Department of Emergency Medicine, University of Maryland School of MedicineBaltimore, MDUSA
| | - Alexis Salerno
- Department of Emergency Medicine, University of Maryland School of MedicineBaltimore, MDUSA
| | - Jessica V Downing
- Program in Trauma/Surgical Critical Care, The R Adams Cowley Shock Trauma Center, University of Maryland Medical CenterBaltimore, MDUSA
| | - Zachary R Wynne
- Department of Emergency Medicine, University of Maryland Medical CenterBaltimore, MDUSA
| | - Jordan T Parker
- Department of Emergency Medicine, University of Maryland Medical CenterBaltimore, MDUSA
| | - Taylor E Miller
- Department of Emergency Medicine, University of Maryland Medical CenterBaltimore, MDUSA
| | - Semhar Z Tewelde
- Department of Emergency Medicine, University of Maryland School of MedicineBaltimore, MDUSA
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5
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Miyagi C, Kuroda T, Karimov JH, Fukamachi K. Novel approaches for left atrial pressure relief: Device-based monitoring and management in heart failure. Front Cardiovasc Med 2022; 9:910957. [PMID: 36035901 PMCID: PMC9403239 DOI: 10.3389/fcvm.2022.910957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 07/26/2022] [Indexed: 11/18/2022] Open
Abstract
The importance of the left atrium (LA) has been emphasized in recent years as the features of heart failure (HF), especially with regard to variability in patient and pathology phenotypes, continue to be uncovered. Of note, among the population with HF with preserved ejection fraction (HFpEF), pressure or size of the LA have become a target for advanced monitoring and a therapeutic approach. In the case of diastolic dysfunction or pulmonary hypertension, which are often observed in patients with HFpEF, a conventional approach with clinical symptoms and physical signs of decompensation turned out to have a poor correlation with LA pressure. Therefore, to optimize HF treatment for these populations, several devices that are applied directly to the LA have been developed. First, two LA pressure (LAP) sensors (Heart POD and V-LAP Device) were developed and may enable patient self-management remotely with LAP-guided and physician-directed style. Second, there are device-based approaches that aim to decompress the LA directly. These include: (1) interatrial shunt devices; (2) left ventricular assist devices with LA cannulation; and (3) the left atrial assist device. While these novel device-based therapies are not yet commercially available, there is expected to be a rise in the proposition and adoption of a wider range of choices for monitoring or treating LA using device-based options, based on LA dimensional reduction and optimization of the clinically significant pressure relief. Further development and evaluation are necessary to establish a more favorable management strategy for HF.
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Affiliation(s)
- Chihiro Miyagi
- Department of Biomedical Engineering, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, United States
| | - Taiyo Kuroda
- Department of Biomedical Engineering, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, United States
| | - Jamshid H. Karimov
- Department of Biomedical Engineering, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, United States
- Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, United States
| | - Kiyotaka Fukamachi
- Department of Biomedical Engineering, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, United States
- Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, United States
- *Correspondence: Kiyotaka Fukamachi
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6
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Miyagi C, Miyamoto T, Kuroda T, Karimov JH, Starling RC, Fukamachi K. Large animal models of heart failure with preserved ejection fraction. Heart Fail Rev 2021; 27:595-608. [PMID: 34751846 DOI: 10.1007/s10741-021-10184-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/21/2021] [Indexed: 01/14/2023]
Abstract
Heart failure with preserved ejection fraction (HFpEF) is characterized by diastolic dysfunction and multiple comorbidities. The number of patients is continuously increasing, with no improvement in its unfavorable prognosis, and there is a strong need for novel treatments. New devices and drugs are difficult to assess at the translational preclinical step due to the lack of high-fidelity large animal models of HFpEF. In this review, we describe the summary of historical and evolving techniques for developing large animal models. The representative methods are pressure overload models, including (1) aortic banding, (2) aortic stent, (3) renal hypertension, and (4) mineralocorticoid-induced hypertension. Diet-induced metabolic syndromes are also used. A new technique with an inflatable balloon inside the left ventricle can be used during acute/chronic in vivo surgeries to simulate HFpEF-like hemodynamics for pump-based therapies. Canines and porcine are most widely used, but other non-rodent animals (sheep, non-human primates, felines, or calves) have been used. Feline models present the most well-simulated HFpEF pathology, but small size is a concern, and the information is still very limited. The rapid and reliable establishment of large animal models for HFpEF, and novel methodology based on the past experimental attempts with large animals, are needed.
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Affiliation(s)
- Chihiro Miyagi
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Takuma Miyamoto
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Taiyo Kuroda
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Jamshid H Karimov
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Randall C Starling
- Department of Cardiovascular Medicine, Miller Family Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH, USA.,Kaufman Center for Heart Failure Treatment and Recovery, Cleveland Clinic, Cleveland, OH, USA
| | - Kiyotaka Fukamachi
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
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7
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Olsen FJ, Johansen ND, Skaarup KG, Lassen MCH, Ravnkilde K, Schnohr P, Jensen GB, Marott JL, Søgaard P, Møgelvang R, Biering-Sørensen T. Changes in left atrial structure and function over a decade in the general population. Eur Heart J Cardiovasc Imaging 2021; 23:124-136. [PMID: 34468711 DOI: 10.1093/ehjci/jeab173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 08/13/2021] [Indexed: 11/14/2022] Open
Abstract
AIMS Assessing left atrial (LA) size and function is an important part of the echocardiographic examination. We sought to assess how LA size and function develop over time, and which clinical characteristics promote atrial remodelling. METHODS AND RESULTS We examined longitudinal changes of the LA between two visits in the Copenhagen City Heart Study (n = 1065). The median time between the examinations was 10.4 years. LA measurements included: maximal LA volume (LAVmax), minimal LA volume (LAVmin), and LA emptying fraction (LAEF). Clinical and echocardiographic accelerators were determined from linear regression. The value of LA remodelling for predicting incident atrial fibrillation (AF) and heart failure (HF) was examined by Cox proportional hazards regressions. During follow-up, LAVmax and LAVmin significantly increased by 8.3 and 3.5 mL/m2, respectively. LAEF did not change. Age and AF were the most impactful clinical accelerators of LA remodelling with standardized beta-coefficients of 0.17 and 0.28 for changes in LAVmax, and 0.18 and 0.38 for changes in LAVmin, respectively. Left ventricular (LV) systolic function, diameter, and mass were also significant accelerators of LA remodelling. Changes in both LAVmax and LAVmin were significantly associated with incident AF [n = 46, ΔLAVmax: HR = 1.06 (1.03-1.09), P < 0.001 and ΔLAVmin: HR = 1.14 (1.10-1.18), P < 0.001, per 1 mL/m2 increase] and HF [n = 27, ΔLAVmax: HR = 1.08 (1.04-1.12), P < 0.001 and ΔLAVmin: HR = 1.13 (1.09-1.18), P < 0.001, per 1 mL/m2 increase]. CONCLUSION Both maximal and minimal LA volume increase over time. Clinical accelerators included age and AF. LV structure and systolic function also accelerate LA remodelling. LA remodelling poses an increased risk of clinical outcomes.
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Affiliation(s)
- Flemming Javier Olsen
- The Copenhagen City Heart Study, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark.,Department of Cardiology, Herlev and Gentofte Hospital, Niels Andersens Vej 65, 2900 Hellerup, Denmark
| | - Niklas Dyrby Johansen
- The Copenhagen City Heart Study, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark.,Department of Cardiology, Herlev and Gentofte Hospital, Niels Andersens Vej 65, 2900 Hellerup, Denmark
| | - Kristoffer Grundtvig Skaarup
- The Copenhagen City Heart Study, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark.,Department of Cardiology, Herlev and Gentofte Hospital, Niels Andersens Vej 65, 2900 Hellerup, Denmark
| | - Mats Christian Højbjerg Lassen
- The Copenhagen City Heart Study, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark.,Department of Cardiology, Herlev and Gentofte Hospital, Niels Andersens Vej 65, 2900 Hellerup, Denmark
| | - Kirstine Ravnkilde
- The Copenhagen City Heart Study, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark.,Department of Cardiology, Herlev and Gentofte Hospital, Niels Andersens Vej 65, 2900 Hellerup, Denmark
| | - Peter Schnohr
- The Copenhagen City Heart Study, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark
| | - Gorm Boje Jensen
- The Copenhagen City Heart Study, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark
| | - Jacob Louis Marott
- The Copenhagen City Heart Study, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark
| | - Peter Søgaard
- The Copenhagen City Heart Study, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark.,Department of Cardiology, North Zealand Hospital, University of Copenhagen, Hillerød, Denmark
| | - Rasmus Møgelvang
- The Copenhagen City Heart Study, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark.,Department of Cardiology, Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Clinical Research, Faculty of Health and Medical Sciences, University of Southern, Svendborg, Denmark
| | - Tor Biering-Sørensen
- The Copenhagen City Heart Study, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark.,Department of Cardiology, Herlev and Gentofte Hospital, Niels Andersens Vej 65, 2900 Hellerup, Denmark.,Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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8
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Serezhina EK, Obrezan AG. [Significance of the echocardiographic evaluation of left atrial myocardial strain for early diagnosis of heart failure with preserved ejection fraction]. KARDIOLOGIIA 2021; 61:68-75. [PMID: 34549696 DOI: 10.18087/cardio.2021.8.n1418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 02/02/2021] [Accepted: 03/01/2021] [Indexed: 06/13/2023]
Abstract
This systematic review is based on 19 studies from Elsevier, PubMed, Embase, and Scopus databases, which were found by the following keywords: LA strain (left atrial strain), STE (speckle tracking echocardiography), HF (heart failure), and HFpEF (heart failure with preserved ejection fraction). The review focuses on results and conclusions of studies on using the 2D echocardiographic evaluation of left atrial (LA) myocardial strain for early diagnosis of HFpEF in routine clinical practice. Analysis of the studies included into this review showed a significant decline of all LA functions in patients with HFpEF. Also, multiple studies have reported associations between decreased indexes of LA strain and old age, atrial fibrillation, left ventricular hypertrophy, left and right ventricular systolic dysfunction, and LV diastolic dysfunction. Thus, the review indicates significant possibilities of using indexes of LA strain in evaluation of early stages of both systolic and diastolic myocardial dysfunction. Notably, LA functional systolic and diastolic indexes are not sufficiently studied despite their growing significance for diagnosis and prognosis of patients with HFpEF. For this reason, in addition to existing models for risk stratification in this disease, including clinical characteristics and/or echocardiographic data, future studies should focus on these parameters.
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Affiliation(s)
- E K Serezhina
- ООО International Medical Center "SOGAZ", Saint Petersburg, Russia
| | - A G Obrezan
- ООО International Medical Center "SOGAZ", Saint Petersburg, Russia
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9
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Shin SH, Claggett B, Inciardi RM, Santos ABS, Shah SJ, Zile MR, Pfeffer MA, Shah AM, Solomon SD. Prognostic Value of Minimal Left Atrial Volume in Heart Failure With Preserved Ejection Fraction. J Am Heart Assoc 2021; 10:e019545. [PMID: 34325519 PMCID: PMC8475710 DOI: 10.1161/jaha.120.019545] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Background Maximal left atrial (LA) volume is reported by most echocardiography laboratories and is associated with clinical outcomes in patients with heart failure (HF). Recent studies suggest that minimal LA volume may better reflect left ventricular filling pressure and may be more prognostic than maximal LA volume. This study assessed the prognostic value of indexed minimal LA volume (LAVImin) in patients with HF with preserved ejection fraction. Methods and Results We assessed the relationship of LAVImin with a primary composite end point of cardiovascular death, aborted cardiac death, or HF hospitalization in 347 patients with HF with preserved ejection fraction enrolled from the Americas region in TOPCAT (Treatment of Preserved Cardiac Function Heart Failure With an Aldosterone Antagonist Trial). We compared LAVImin with indexed maximal LA volume with respect to their prognostic values. In addition, we assessed if LA functional parameters provide additional prognostic information over LAVImin. During a median follow‐up of 2.5 years, 107 patients (31%) experienced a primary composite end point. LAVImin was associated with increased risk of a primary composite outcome (hazard ratio [HR], 1.35; 95% CI, 1.12–1.61) and HF hospitalization alone (HR, 1.42; 95% CI, 1.17–1.71) after adjusting for clinical confounders and ejection fraction. In contrast, indexed maximal LA volume was not related to the primary composite outcome, but related to HF alone (HR, 1.25; 95% CI, 1.02–1.54). In comparison with indexed maximal LA volume, LAVImin was significantly more prognostic for primary composite outcome (P for comparison=0.032). Both LA emptying fraction and LA strain were prognostic of primary outcome independent of LAVImin (all P<0.05). Conclusions In patients with HF with preserved ejection fraction, LAVImin was more predictive of cardiovascular outcome than indexed maximal LA volume, suggesting this measure may be more physiologically relevant and might better identify patients at high risk for cardiovascular events. LA functional parameters provide prognostic information independent of LAVImin. Registration URL: https://www.clinicaltrials.gov; Unique identifier: NCT00094302.
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Affiliation(s)
- Sung-Hee Shin
- Cardiovascular Division Brigham and Women's Hospital and Harvard Medical School Boston MA.,Cardiovascular Division Inha University and Inha University Hospital Incheon South Korea
| | - Brian Claggett
- Cardiovascular Division Brigham and Women's Hospital and Harvard Medical School Boston MA
| | - Riccardo M Inciardi
- Cardiovascular Division Brigham and Women's Hospital and Harvard Medical School Boston MA
| | - Angela B S Santos
- Cardiovascular Division Brigham and Women's Hospital and Harvard Medical School Boston MA
| | - Sanjiv J Shah
- Cardiology Division Northwestern University Feinberg School of Medicine Chicago IL
| | - Michael R Zile
- Division of Cardiology Medical University of South Carolina Charleston SC
| | - Marc A Pfeffer
- Cardiovascular Division Brigham and Women's Hospital and Harvard Medical School Boston MA
| | - Amil M Shah
- Cardiovascular Division Brigham and Women's Hospital and Harvard Medical School Boston MA
| | - Scott D Solomon
- Cardiovascular Division Brigham and Women's Hospital and Harvard Medical School Boston MA
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10
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Abstract
Heart failure with preserved ejection fraction (HFpEF) is a syndrome with an unfavorable prognosis, and the number of the patients continues to grow. Because there is no effective therapy established as a standard, including pharmacological treatments, a movement to develop and evaluate device-based therapies is an important emerging area in the treatment of HFpEF patients. Many devices have set their target to reduce the left atrial pressure or pulmonary capillary wedge pressure because they are strongly related to the symptoms and prognosis of HFpEF, but the methodology to achieve it varies based on the devices. In this review, we summarize and categorize these devices into the following: (1) interatrial shunt devices, (2) left ventricle expander, (3) electrical therapy, (4) left ventricular assist devices, and (5) mechanical circulatory support devices under development. Here, we describe the features and specifications of device-based therapies currently under development and those at more advanced stages of preclinical testing. Advantages and limitations of these technologies, with insights on their safety and feasibility for HFpEF patients, are described.
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11
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Blackwood EA, Bilal AS, Azizi K, Sarakki A, Glembotski CC. Simultaneous Isolation and Culture of Atrial Myocytes, Ventricular Myocytes, and Non-Myocytes from an Adult Mouse Heart. J Vis Exp 2020:10.3791/61224. [PMID: 32597844 PMCID: PMC8580476 DOI: 10.3791/61224] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The isolation and culturing of cardiac myocytes from mice has been essential for furthering the understanding of cardiac physiology and pathophysiology. While isolating myocytes from neonatal mouse hearts is relatively straightforward, myocytes from the adult murine heart are preferred. This is because compared to neonatal cells, adult myocytes more accurately recapitulate cell function as it occurs in the adult heart in vivo. However, it is technically difficult to isolate adult mouse cardiac myocytes in the necessary quantities and viability, which contributes to an experimental impasse. Furthermore, published procedures are specific for the isolation of either atrial or ventricular myocytes at the expense of atrial and ventricular non-myocyte cells. Described here is a detailed method for isolating both atrial and ventricular cardiac myocytes, along with atrial and ventricular non-myocytes, simultaneously from a single mouse heart. Also provided are the details for optimal cell-specific culturing methods, which enhance cell viability and function. This protocol aims not only to expedite the process of adult murine cardiac cell isolation, but also to increase the yield and viability of cells for investigations of atrial and ventricular cardiac cells.
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Affiliation(s)
- Erik A Blackwood
- San Diego State University Heart Institute and the Department of Biology, San Diego State University
| | - Alina S Bilal
- San Diego State University Heart Institute and the Department of Biology, San Diego State University
| | - Khalid Azizi
- San Diego State University Heart Institute and the Department of Biology, San Diego State University
| | - Anup Sarakki
- San Diego State University Heart Institute and the Department of Biology, San Diego State University
| | - Christopher C Glembotski
- San Diego State University Heart Institute and the Department of Biology, San Diego State University;
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12
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Kalayci A, Peacock WF, Nagurney JT, Hollander JE, Levy PD, Singer AJ, Shapiro NI, Cheng RK, Cannon CM, Blomkalns AL, Walters EL, Christenson RH, Chen-Tournoux A, Nowak RM, Lurie MD, Pang PS, Kastner P, Masson S, Gibson CM, Gaggin HK, Januzzi JL. Echocardiographic assessment of insulin-like growth factor binding protein-7 and early identification of acute heart failure. ESC Heart Fail 2020; 7:1664-1675. [PMID: 32406612 PMCID: PMC7373911 DOI: 10.1002/ehf2.12722] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 03/12/2020] [Accepted: 03/31/2020] [Indexed: 12/14/2022] Open
Abstract
Aims Concentrations of insulin‐like growth factor binding protein‐7 (IGFBP7) have been linked to abnormal cardiac structure and function in patients with chronic heart failure (HF), but cardiovascular correlates of the biomarker in patients with more acute presentations are lacking. We aimed to determine the relationship between IGFBP7 concentrations and cardiac structure and to evaluate the impact of IGFBP7 on the diagnosis of acute HF among patients with acute dyspnoea. Methods and results In this pre‐specified subgroup analysis of the International Collaborative of N‐terminal pro‐B‐type Natriuretic Peptide Re‐evaluation of Acute Diagnostic Cut‐Offs in the Emergency Department (ICON‐RELOADED) study, we included 271 patients with and without acute HF. All patients presented to an emergency department with acute dyspnoea, had blood samples for IGFBP7 measurement, and detailed echocardiographic evaluation. Higher IGFBP7 concentrations were associated with numerous cardiac abnormalities, including increased left atrial volume index (LAVi; r = 0.49, P < 0.001), lower left ventricular ejection fraction (r = −0.27, P < 0.001), lower right ventricular fractional area change (r = −0.31, P < 0.001), and higher tissue Doppler E/e′ ratio (r = 0.44, P < 0.001). In multivariable linear regression analyses, increased LAVi (P = 0.01), lower estimated glomerular filtration rate (P = 0.008), higher body mass index (P = 0.001), diabetes (P = 0.009), and higher concentrations of amino‐terminal pro‐B‐type natriuretic peptide (NT‐proBNP, P = 0.02) were independently associated with higher IGFBP7 concentrations regardless of other variables. Furthermore, IGFBP7 (odds ratio = 12.08, 95% confidence interval 2.42–60.15, P = 0.02) was found to be independently associated with the diagnosis of acute HF in the multivariable logistic regression analysis. Conclusions Among acute dyspnoeic patients with and without acute HF, increased IGFBP7 concentrations are associated with a range of cardiac structure and function abnormalities. Independent association with increased LAVi suggests elevated left ventricular filling pressure is an important trigger for IGFBP7 expression and release. IGFBP7 may enhance the diagnosis of acute HF.
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Affiliation(s)
- Arzu Kalayci
- Baim Institute for Clinical Research, Boston, MA, USA.,Division of Cardiovascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - W Frank Peacock
- Department of Emergency Medicine, Baylor College of Medicine, Houston, TX, USA
| | - John T Nagurney
- Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Judd E Hollander
- Department of Emergency Medicine, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Phillip D Levy
- Department of Emergency Medicine and Integrative Biosciences Center, Wayne State University, Detroit, MI, USA
| | - Adam J Singer
- Department of Emergency Medicine, Stony Brook University Hospital, Stony Brook, NY, USA
| | - Nathan I Shapiro
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Richard K Cheng
- Division of Cardiology, University of Washington, Seattle, WA, USA
| | - Chad M Cannon
- Department of Emergency Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Andra L Blomkalns
- Department of Emergency Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Elizabeth L Walters
- Department of Emergency Medicine, Loma Linda University Medical Center, Loma Linda, CA, USA
| | - Robert H Christenson
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Annabel Chen-Tournoux
- Division of Cardiology, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
| | - Richard M Nowak
- Department of Emergency Medicine, Henry Ford Health System, Detroit, MI, USA
| | - Mark D Lurie
- Division of Cardiology, Torrance Memorial Medical Center, Torrance, CA, USA
| | - Peter S Pang
- Department of Emergency Medicine, Indiana University School of Medicine & Indianapolis EMS, Indianapolis, Indiana, USA
| | | | - Serge Masson
- Roche Diagnostics International, Rotkreuz, Switzerland
| | - C Michael Gibson
- Baim Institute for Clinical Research, Boston, MA, USA.,Division of Cardiovascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Hanna K Gaggin
- Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Yawkey 5984, 55 Fruit Street, Boston, MA, 02114, USA
| | - James L Januzzi
- Baim Institute for Clinical Research, Boston, MA, USA.,Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Yawkey 5984, 55 Fruit Street, Boston, MA, 02114, USA.,Harvard Medical School, Boston, MA, USA
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13
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Hoshida S, Watanabe T, Shinoda Y, Minamisaka T, Fukuoka H, Inui H, Ueno K, Yamada T, Uematsu M, Yasumura Y, Nakatani D, Suna S, Hikoso S, Higuchi Y, Sakata Y. Considerable scatter in the relationship between left atrial volume and pressure in heart failure with preserved left ventricular ejection fraction. Sci Rep 2020; 10:90. [PMID: 31919384 PMCID: PMC6952386 DOI: 10.1038/s41598-019-56581-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 12/10/2019] [Indexed: 01/18/2023] Open
Abstract
The index for a target that can lead to improved prognoses and more reliable therapy in each heterogeneous patient with heart failure with preserved ejection fraction (HFpEF) remains to be defined. We examined the heterogeneity in the cardiac performance of patients with HFpEF by clarifying the relationship between the indices of left atrial (LA) volume (LAV) overload and pressure overload with echocardiography. We enrolled patients with HFpEF (N = 105) who underwent transthoracic echocardiography during stable sinus rhythm. Relative LAV overload was evaluated using the LAV index or stroke volume (SV)/LAV ratio. Relative LA pressure overload was estimated using E/e' or the afterload-integrated index of left ventricular (LV) diastolic function: diastolic elastance (Ed)/arterial elastance (Ea) ratio = (E/e')/(0.9 × systolic blood pressure). The logarithmic value of the N-terminal pro-brain natriuretic peptide was associated with SV/LAV (r = -0.214, p = 0.033). The pulmonary capillary wedge pressure was positively correlated to Ed/Ea (r = 0.403, p = 0.005). SV/LAV was negatively correlated to Ed/Ea (r = -0.292, p = 0.002), with no observed between-sex differences. The correlations between the LAV index and E/e' and Ed/Ea and between SV/LAV and E/e' were less prominent than the abovementioned relationships. SV/LAV and Ed/Ea, showing relative LAV and LA pressure respectively, were significantly but modestly correlated in patients with HFpEF. There may be considerable scatter in the relationships between these indices, which could possibly affect the selection of medications or efforts to improve the prognoses of patients with HFpEF.
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Affiliation(s)
- Shiro Hoshida
- Department of Cardiovascular Medicine, Yao Municipal Hospital, Yao, Japan.
| | - Tetsuya Watanabe
- Department of Cardiovascular Medicine, Yao Municipal Hospital, Yao, Japan
| | - Yukinori Shinoda
- Department of Cardiovascular Medicine, Yao Municipal Hospital, Yao, Japan
| | - Tomoko Minamisaka
- Department of Cardiovascular Medicine, Yao Municipal Hospital, Yao, Japan
| | - Hidetada Fukuoka
- Department of Cardiovascular Medicine, Yao Municipal Hospital, Yao, Japan
| | - Hirooki Inui
- Department of Cardiovascular Medicine, Yao Municipal Hospital, Yao, Japan
| | - Keisuke Ueno
- Department of Cardiovascular Medicine, Yao Municipal Hospital, Yao, Japan
| | - Takahisa Yamada
- Division of Cardiology, Osaka General Medical Center, Osaka, Japan
| | - Masaaki Uematsu
- Department of Cardiovascular Medicine, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Yoshio Yasumura
- Department of Cardiovascular Medicine, Amagasaki Chuo Hospital, Amagasaki, Japan
| | - Daisaku Nakatani
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Japan
| | - Shinichiro Suna
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Japan
| | - Shungo Hikoso
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoshiharu Higuchi
- Department of Cardiovascular Medicine, Osaka Police Hospital, Osaka, Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Japan
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14
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Khan MS, Memon MM, Murad MH, Vaduganathan M, Greene SJ, Hall M, Triposkiadis F, Lam CS, Shah AM, Butler J, Shah SJ. Left atrial function in heart failure with preserved ejection fraction: a systematic review and meta‐analysis. Eur J Heart Fail 2020; 22:472-485. [DOI: 10.1002/ejhf.1643] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 08/28/2019] [Accepted: 09/18/2019] [Indexed: 12/31/2022] Open
Affiliation(s)
- Muhammad Shahzeb Khan
- Department of Internal MedicineJohn H Stroger Jr. Hospital of Cook County Chicago IL USA
| | | | | | - Muthiah Vaduganathan
- Harvard Medical SchoolBrigham and Women's Hospital Heart & Vascular Center Boston MA USA
| | - Stephen J. Greene
- Duke Clinical Research Institute and Duke University School of Medicine Durham NC USA
| | - Michael Hall
- Department of CardiologyUniversity of Mississippi Medical Center Jackson MS USA
| | | | - Carolyn S.P. Lam
- National Heart Centre SingaporeDuke‐National University of Singapore Singapore
- Department of CardiologyUniversity Medical Centre Groningen Groningen The Netherlands
| | - Amil M. Shah
- Harvard Medical SchoolBrigham and Women's Hospital Heart & Vascular Center Boston MA USA
| | - Javed Butler
- Department of MedicineUniversity of Mississippi Medical Center Jackson MS USA
| | - Sanjiv J. Shah
- Division of Cardiology, Department of MedicineNorthwestern University Feinberg School of Medicine Chicago IL USA
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15
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Hanff TC, Kaye DM, Hayward CS, Post MC, Malek F, Hasenfuβ G, Gustafsson F, Burkhoff D, Shah SJ, Litwin SE, Kahwash R, Hummel SL, Borlaug BA, Solomon SD, Lam CSP, Komtebedde J, Silvestry FE. Assessment of Predictors of Left Atrial Volume Response to a Transcatheter InterAtrial Shunt Device (from the REDUCE LAP-HF Trial). Am J Cardiol 2019; 124:1912-1917. [PMID: 31653352 DOI: 10.1016/j.amjcard.2019.09.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 09/06/2019] [Accepted: 09/10/2019] [Indexed: 11/15/2022]
Abstract
In patients with heart failure and preserved or mildly reduced ejection fractions (EF ≥40%), implantation of an interatrial shunt device (IASD) resulted in heterogenous changes of the left atrial (LA) volume. Baseline characteristics that correlate with a favorable decrease in LA volume are unknown. We hypothesized that a larger ratio of left to right atrial volume at baseline would correlate strongly with LA volume decongestion following IASD implantation. Reduce Elevated LA Pressure in Patients With Heart Failure was a multicenter study of the safety and feasibility of IASD implantation. Sixty-four patients with EF ≥40% underwent device implantation along with baseline conventional echocardiograms, speckle tracking echocardiography, and resting and exercise hemodynamics. Higher LA compliance (-4.2%, p = 0.048) and right atrial reservoir strain (-0.8%, p = 0.005) were independently associated with a percent decrease in the systolic LA volume index from baseline to 6-months. In conclusion, greater LA volume reduction following IASD implantation is associated with higher baseline compliance of the left atrium and higher reservoir strain of the right atrium.
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Affiliation(s)
- Thomas C Hanff
- Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.
| | - David M Kaye
- Alfred Hospital and Baker Heart and Diabetes Institute Melbourne, Victoria, Australia
| | | | | | | | - Gerd Hasenfuβ
- Heart Centre, Georg-August University, Gottingen, Germany
| | - Finn Gustafsson
- Department of Cardiology, Rigshospitalet, Copenhagen, Denmark
| | | | - Sanjiv J Shah
- Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Sheldon E Litwin
- Medical University of South Carolina, Charleston, South Carolina
| | - Rami Kahwash
- Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Scott L Hummel
- University of Michigan and VA Ann Arbor Healthcare System, Ann Arbor, Michigan
| | | | | | | | | | - Frank E Silvestry
- Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
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16
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Lydell CP, Mikami Y, Homer K, Peng M, Cornhill A, Rajagopalan A, Arasaratnam P, Cowan K, Roberts A, Sumner C, Heydari B, Howarth AG, Exner D, White JA. Left Atrial Function Using Cardiovascular Magnetic Resonance Imaging Independently Predicts Life-Threatening Arrhythmias in Patients Referred to Receive a Primary Prevention Implantable Cardioverter Defibrillator. Can J Cardiol 2019; 35:1149-1157. [PMID: 31472813 DOI: 10.1016/j.cjca.2019.04.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 03/19/2019] [Accepted: 04/10/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND In this study we aimed to investigate left atrial (LA) function, measured from routine cine cardiovascular magnetic resonance imaging, to determine its value for the prediction of sudden cardiac death (SCD) or appropriate implantable cardioverter defibrillator (ICD) shock in patients who received primary prevention ICD implantation. METHODS We studied 203 patients with ischemic or idiopathic nonischemic dilated cardiomyopathy who underwent cardiovascular magnetic resonance imaging before primary prevention ICD implantation. LA volumes were measured at end-diastole and end-systole from 4- and 2-chamber cine images, and LA emptying function (LAEF) calculated. Patients were followed for the primary composite end point of SCD or appropriate ICD shock. RESULTS Mean age was 61 ± 12 years with a mean left ventricular ejection fraction of 24 ± 7%. The mean LAEF was 27 ± 15% (range, 0.9%-73%). At a median follow-up of 1639 days, 35 patients (17%) experienced the primary composite outcome. LAEF was strongly associated with the primary outcome (P = 0.001); patients with an LAEF ≤ 30% experienced a cumulative event rate of 26.1% vs 5.7% (hazard ratio, 5.5; P < 0.001) in patients above this cutoff. This finding was maintained in multivariable analysis (hazard ratio, 4.7; P = 0.002) and was consistently shown in the ischemic and nonischemic dilated cardiomyopathy subgroups. CONCLUSIONS LAEF is a simple, powerful, and independent predictor of SCD in patients being referred for primary prevention ICD implantation.
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Affiliation(s)
- Carmen P Lydell
- Stephenson Cardiac Imaging Centre, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Yoko Mikami
- Stephenson Cardiac Imaging Centre, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Kai Homer
- Stephenson Cardiac Imaging Centre, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Mingkai Peng
- Department of Cardiac Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Aidan Cornhill
- Stephenson Cardiac Imaging Centre, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Archa Rajagopalan
- Stephenson Cardiac Imaging Centre, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Punitha Arasaratnam
- Stephenson Cardiac Imaging Centre, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - Karen Cowan
- Department of Cardiac Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Andrew Roberts
- Department of Cardiac Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Claire Sumner
- Department of Cardiac Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Bobak Heydari
- Stephenson Cardiac Imaging Centre, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada; Department of Cardiac Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Andrew G Howarth
- Stephenson Cardiac Imaging Centre, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada; Department of Cardiac Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Derek Exner
- Department of Cardiac Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - James A White
- Stephenson Cardiac Imaging Centre, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada; Department of Cardiac Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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17
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Šuran D, Kanič V, Naji F, Krajnc I, Čokolič M, Zemljič E, Sinkovič A. Predictors of early cardiac changes in patients with type 1 diabetes mellitus: An echocardiography-based study. Bosn J Basic Med Sci 2019; 19:384-391. [PMID: 31215855 DOI: 10.17305/bjbms.2019.4250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 06/12/2019] [Indexed: 11/16/2022] Open
Abstract
In patients with type 1 diabetes mellitus (T1DM) imaging studies have demonstrated an increased prevalence of left ventricular diastolic dysfunction and increased left ventricular mass (LVM) unrelated to arterial hypertension and ischemic heart disease. The aim of our study was to identify potential predictors of early subclinical changes in cardiac chamber size and function in such patients. Sixty-one middle-aged asymptomatic normotensive patients with T1DM were included in the study. Conventional and tissue Doppler echocardiography was performed and fasting serum levels of glucose, glycated hemoglobin (HbA1c), lipids, and creatinine were measured. We found moderate bivariate correlations of body mass index (BMI) with left atrial volume (r = 0.47, p < 0.01), LVM (r = 0.42, p < 0.01), left ventricular relative wall thickness (r = 0.32, p = 0.01), and all observed parameters of diastolic function of both ventricles. The five-year average value of HbA1c weakly correlated with the Doppler index of left ventricular filling pressure E/e´sept (r = 0.27, p = 0.04). We found no significant association of diabetes duration, five-year trend of HbA1c, serum lipids, and glomerular filtration rate with cardiac structure and function. After adjusting for other parameters, BMI remained significantly associated with left atrial volume, LVM as well as with the transmitral Doppler ratio E/A. In our study, BMI was the only observed parameter significantly associated with subclinical structural and functional cardiac changes in the asymptomatic middle-aged patients with T1DM.
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Affiliation(s)
- David Šuran
- Department of Cardiology and Angiology, University Medical Centre Maribor, Maribor, Slovenia.
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18
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Duler L, Scollan KF, LeBlanc NL. Left atrial size and volume in cats with primary cardiomyopathy with and without congestive heart failure. J Vet Cardiol 2019; 24:36-47. [PMID: 31405553 DOI: 10.1016/j.jvc.2019.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 04/29/2019] [Accepted: 04/29/2019] [Indexed: 12/20/2022]
Abstract
INTRODUCTION/OBJECTIVES Myocardial diseases are the most common acquired cardiac diseases in cats and may result in left atrial enlargement and congestive heart failure (CHF). Volume calculations have replaced linear measurements for chamber quantification in humans but are not commonly measured in cats. The aims of this retrospective study were to compare the left atrial (LA) size by two-dimensional linear measurements to two-dimensional LA volumes (LAV). ANIMALS One hundred sixty-two client-owned cats were included. MATERIALS AND METHODS Cats with complete echocardiographic examinations were included and categorized into one of the three groups: healthy, cardiomyopathy (CM), and CHF. Seven measurements of the LA size were performed including minimal and maximal LA-to-aortic ratio (LA:Ao) and LAV and also maximal left atrial diameter (LAD). RESULTS Cats were classified as healthy (n = 56), CM (n = 62), and CHF (n = 44). The minimal LA:Ao (LA:Aomin) and minimal LAV from the left apical view (LAVmin-LAP) best differentiated the CM and CHF groups. The LA:Aomin value with the optimal sensitivity and specificity to distinguish CM and CHF cats was 1.64 (sensitivity 84% and specificity 75%). CONCLUSIONS Left atrial volumes were not superior to linear measurements of LA size in distinguishing CM and CHF cats in this study. Minimal LA size and volumes resulted in a larger area under the curve than each corresponding maximal value. Minimum LA size may be a better prognostic factor of CHF in cats with CM.
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Affiliation(s)
- L Duler
- Department of Clinical Sciences, Carlson College of Veterinary Medicine, Oregon State University, Corvallis, OR, 97331, USA
| | - K F Scollan
- Department of Clinical Sciences, Carlson College of Veterinary Medicine, Oregon State University, Corvallis, OR, 97331, USA.
| | - N L LeBlanc
- Department of Clinical Sciences, Carlson College of Veterinary Medicine, Oregon State University, Corvallis, OR, 97331, USA
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19
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Thomas L, Marwick TH, Popescu BA, Donal E, Badano LP. Left Atrial Structure and Function, and Left Ventricular Diastolic Dysfunction: JACC State-of-the-Art Review. J Am Coll Cardiol 2019; 73:1961-1977. [PMID: 31000000 DOI: 10.1016/j.jacc.2019.01.059] [Citation(s) in RCA: 342] [Impact Index Per Article: 68.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 01/15/2019] [Indexed: 01/31/2023]
Abstract
Defining left atrial (LA) function has recently emerged as a powerful parameter, particularly in evaluation of left ventricular (LV) diastolic dysfunction (LVDD) and heart failure with preserved ejection fraction. Echocardiographic assessment of LVDD by echocardiography remains a challenging task; recent recommendations provide a simpler approach than previous. However, the shortcomings of the proposed approach (including transmitral flow, tissue velocity, maximum left atrial volume [LAV], and estimated pulmonary artery systolic pressure), lead to the presence and severity of LVDD remaining undetermined in a significant proportion of patients. Maximum LAV is a surrogate measure of the chronicity and severity of LVDD, but LAV alone is an insensitive biomarker of early phases of LVDD, because the LA may take time to remodel. Because the primary function of the LA is to modulate LV filling, it is not surprising that functional LA changes become evident at the earliest stages of LVDD. Moreover, LA function may provide additive value, not only in diagnosing LVDD, but also in grading its severity and in monitoring the effects of treatment. The current review provides a critical appraisal on the existing evidence for the role of LA metrics in evaluation of LVDD and consequent heart failure with preserved ejection fraction.
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Affiliation(s)
- Liza Thomas
- University of Sydney, Sydney, NSW, Australia; Department of Cardiology Westmead Hospital; South West Clinical School, University of New South Wales, Sydney, NSW, Australia.
| | - Thomas H Marwick
- Baker IDI heart and Diabetes Institute and the Alfred Hospital, Melbourne, Victoria, Australia
| | - Bogdan A Popescu
- University of Medicine and Pharmacy "Carol Davila"-Euroecolab, Department of Cardiology, Institute of Cardiovascular Diseases "Prof. Dr. C. C. Iliescu," Bucharest, Romania
| | - Erwan Donal
- University of Rennes, CHU Rennes, Inserm, LTSI-UMR 1099, Rennes, France
| | - Luigi P Badano
- University of Milano-Bicocca, Milan, Italy; IRCCS, Istituto Auxologico Italiano, S. Luca Hospital, Milan, Italy
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20
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Mandoli GE, Cameli M, Lisi E, Minardi S, Capone V, Pastore MC, Mondillo S. Left Atrial Fractional Shortening: A Simple and Practical "Strain" for Everyone. J Cardiovasc Echogr 2019; 29:52-57. [PMID: 31392119 PMCID: PMC6657461 DOI: 10.4103/jcecho.jcecho_74_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Background: The function of the left atrium (LA) is reduced in many cardiac diseases even with normal size. The assessment of its compliance could represent an added value in an echocardiographic report in case the gold standard technique (speckle-tracking echocardiography [STE]) is not available. We sought to test a simple and quick method as surrogate of STE: the dynamic measurement of the LA anteroposterior diameter (APD) that we called LA fractional shortening (LAFS). Materials and Methods: A total of 153 consecutive patients underwent a transthoracic echocardiography in our echo laboratory between January and June 2017. The only inclusion criteria were the presence of an acoustic window and the informed consent. We chose to not apply exclusion criteria to assess LAFS feasibility. The LAFS was calculated as (maxAPD−minAPD)/(maxAPD) × 100 in parasternal long-axis view. We evaluated the correlation of its value with the peak atrial longitudinal strain (PALS) and the LA emptying fraction (EF). Results: Mean execution time was 32.1 ± 5 s for LAFS, 2.3 ± 0.7 min for LAEF, and 2 ± 1 min for PALS. LAFS, with a feasibility of about 97%, was moderately correlated with PALS and LAEF (R between 0.20 and 0.30, P < 0.05). LAFS fractional shortening also emerged as surrogate for PALS via the relationship PALS = 21.07 + 0.364x (LAFS). Conclusions: LAFS demonstrated a correlation with PALS, a short execution time, a high feasibility, and the possibility to be used as a surrogate of PALS, applying a specific formula.
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Affiliation(s)
| | - Matteo Cameli
- Department of Cardiovascular Diseases, University of Siena, Siena, Italy
| | - Edoardo Lisi
- Department of Mathematics, Imperial College, London, UK
| | - Simona Minardi
- Department of Cardiovascular Diseases, University of Siena, Siena, Italy
| | - Valentina Capone
- Department of Cardiovascular Diseases, University of Siena, Siena, Italy
| | | | - Sergio Mondillo
- Department of Cardiovascular Diseases, University of Siena, Siena, Italy
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21
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Hohendanner F, Messroghli D, Bode D, Blaschke F, Parwani A, Boldt L, Heinzel FR. Atrial remodelling in heart failure: recent developments and relevance for heart failure with preserved ejection fraction. ESC Heart Fail 2018; 5:211-221. [PMID: 29457877 PMCID: PMC5880666 DOI: 10.1002/ehf2.12260] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 12/11/2017] [Indexed: 12/11/2022] Open
Affiliation(s)
- Felix Hohendanner
- Department of CardiologyCharité University MedicineCampus Virchow‐Klinikum, Augustenburger Platz 113353BerlinGermany
- German Center for Cardiovascular Research (DZHK), Partner SiteBerlinGermany
| | - Daniel Messroghli
- Department of CardiologyCharité University MedicineCampus Virchow‐Klinikum, Augustenburger Platz 113353BerlinGermany
- German Center for Cardiovascular Research (DZHK), Partner SiteBerlinGermany
- Department of Internal Medicine—CardiologyDeutsches Herzzentrum BerlinBerlinGermany
| | - David Bode
- Department of CardiologyCharité University MedicineCampus Virchow‐Klinikum, Augustenburger Platz 113353BerlinGermany
- German Center for Cardiovascular Research (DZHK), Partner SiteBerlinGermany
| | - Florian Blaschke
- Department of CardiologyCharité University MedicineCampus Virchow‐Klinikum, Augustenburger Platz 113353BerlinGermany
- German Center for Cardiovascular Research (DZHK), Partner SiteBerlinGermany
| | - Abdul Parwani
- Department of CardiologyCharité University MedicineCampus Virchow‐Klinikum, Augustenburger Platz 113353BerlinGermany
- German Center for Cardiovascular Research (DZHK), Partner SiteBerlinGermany
| | - Leif‐Hendrik Boldt
- Department of CardiologyCharité University MedicineCampus Virchow‐Klinikum, Augustenburger Platz 113353BerlinGermany
- German Center for Cardiovascular Research (DZHK), Partner SiteBerlinGermany
| | - Frank R. Heinzel
- Department of CardiologyCharité University MedicineCampus Virchow‐Klinikum, Augustenburger Platz 113353BerlinGermany
- German Center for Cardiovascular Research (DZHK), Partner SiteBerlinGermany
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Todaro MC. Left Atrial Morphology and Function: A Strong Cardiovascular Predictor of Outcome. J Cardiovasc Echogr 2017; 27:118-119. [PMID: 28758067 PMCID: PMC5516444 DOI: 10.4103/jcecho.jcecho_31_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Maria Chiara Todaro
- Department of Clinical-Experimental Medicine and Pharmacology, Cardiology Division, University of Messina, Messina, Italy.,Department of Cardiology, Ospedale Civile di Ivrea (TO), Ivrea, Italy
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Mavrogeni S, Katsi V, Vartela V, Noutsias M, Markousis-Mavrogenis G, Kolovou G, Manolis A. The emerging role of Cardiovascular Magnetic Resonance in the evaluation of hypertensive heart disease. BMC Cardiovasc Disord 2017; 17:132. [PMID: 28535761 PMCID: PMC5442666 DOI: 10.1186/s12872-017-0556-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 05/07/2017] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Arterial hypertension is the commonest cause of cardiovascular death. It may lead to hypertensive heart disease (HHD), including heart failure (HF), ischemic heart disease (IHD) and left ventricular hypertrophy (LVH). MAIN BODY According to the 2007 ESH/ESC guidelines, the recommended imaging technique is echocardiography (echo), when a more sensitive detection of LVH than that provided by ECG, is needed. Cardiovascular Magnetic Resonance (CMR), a non-invasive, non-radiating technique, offers the following advantages, beyond echo: a) more reliable and reproducible measurements of cardiac parameters such as volumes, ejection fraction and cardiac mass b) more accurate differentiation of LVH etiology by providing information about tissue characterisation c) more accurate evaluation of myocardial ischemia, specifically if small vessels disease is present d) technique of choice for diagnosis of renovascular, aortic tree/branches lesions and quantification of aortic valve regurgitation e) technique of choice for treatment evaluation in clinical trials. The superiority of CMR against echocardiography in terms of reproducibility, operator independency, unrestricted field of view and capability of tissue characterization makes the technique ideal for evaluation of heart, quantification of aortic valve regurgitation, aorta and aortic branches. CONCLUSIONS CMR has a great potential in early diagnosis, risk stratification and treatment follow up of HHD. However, an international consensus about CMR in HHD, taking under consideration the cost-benefit ratio, expertise and availability, is still warranted.
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Affiliation(s)
- Sophie Mavrogeni
- Onassis Cardiac Surgery Center, 50 Esperou Street, 175 61 P.Faliro, Athens, Greece
| | | | - Vasiliki Vartela
- Onassis Cardiac Surgery Center, 50 Esperou Street, 175 61 P.Faliro, Athens, Greece
| | - Michel Noutsias
- Department of Cardiology, Pneumonology and Intensive Care Medicine, Clinic for Internal Medicine I, University Hospital Jena, Friedrich-Schiller-University, Jena, Germany
| | | | - Genovefa Kolovou
- Onassis Cardiac Surgery Center, 50 Esperou Street, 175 61 P.Faliro, Athens, Greece
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