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Yumusak O, Doulberis M. Update on cirrhotic cardiomyopathy: from etiopathogenesis to treatment. Ann Gastroenterol 2024; 37:381-391. [PMID: 38974075 PMCID: PMC11226742 DOI: 10.20524/aog.2024.0885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Accepted: 05/15/2024] [Indexed: 07/09/2024] Open
Abstract
Cirrhotic cardiomyopathy represents a syndrome of cardiac dysfunction associated with advanced liver disease. It is the result of complex pathophysiological processes that complicate the course of the disease, and is generally associated with a poor prognosis. Pathophysiologically, portal hypertension is the key factor leading to hyperdynamic circulation, via over-activation of the neurohumoral axis. Intestinal obstruction, subclinical inflammation and hepatocellular insufficiency, with defective synthesis or metabolism of several vasoactive mediators, are essential components of this process. Since it is usually unapparent at rest and only unmasked by an inadequate cardiac response to hemodynamic stress, the diagnosis of cirrhotic cardiomyopathy is challenging and demands a multimodal approach. There is currently no specific therapy, but there are prognostically effective drugs available to treat heart failure. Therefore, it is crucial to identify patients with chronic liver disease and heart failure in order to ameliorate their outcome. This article attempts to highlight the most important aspects of cirrhotic cardiomyopathy and draws attention to this condition.
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Affiliation(s)
- Ogulcan Yumusak
- Clinic of Cardiology, Medical University Department, Cantonal Hospital Aarau, Switzerland (Ogulcan Yumusak)
| | - Michael Doulberis
- Gastroklinik, Private Gastroenterological Practice, Horgen, Switzerland (Michael Doulberis)
- Division of Gastroenterology and Hepatology, Medical University Department, Cantonal Hospital Aarau, Switzerland (Michael Doulberis)
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Dimitroglou Y, Aggeli C, Alexopoulou A, Tsartsalis D, Patsourakos D, Koukos M, Tousoulis D, Tsioufis K. The Contemporary Role of Speckle Tracking Echocardiography in Cirrhotic Cardiomyopathy. Life (Basel) 2024; 14:179. [PMID: 38398688 PMCID: PMC10890501 DOI: 10.3390/life14020179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/15/2024] [Accepted: 01/22/2024] [Indexed: 02/25/2024] Open
Abstract
Cirrhotic cardiomyopathy (CCM) is characterized by elevated cardiac output at rest, an inability to further increase contractility under stress, and diastolic dysfunction. The diagnosis of CCM is crucial as it can lead to complications during liver transplantation. However, its recognition poses challenges with conventional echocardiography techniques. Speckle tracking echocardiography (STE), particularly global longitudinal strain (GLS), is a novel index that enhances the diagnostic efficacy of echocardiography for both ischemic and non-ischemic cardiomyopathies. GLS proves more sensitive in identifying early systolic dysfunction and is also influenced by advanced diastolic dysfunction. Consequently, there is an expanding scope for GLS utilization in cirrhotic cases, with newly updated diagnostic criteria for CCM incorporating GLS. Specifically, systolic dysfunction is now defined as either a left ventricular ejection fraction below 50% or an absolute GLS below 18%. However, conflicting data on GLS alterations in liver cirrhosis patients persist, as many individuals with advanced disease and a poor prognosis exhibit a hyperdynamic state with preserved or increased GLS. Consequently, the presence of CCM, according to the updated criteria, does not exhibit a significant association-in the majority of studies-with the severity of liver disease and prognosis. Furthermore, information on other indices measured with STE, such as left atrial and right ventricular strain, is promising but currently limited. This review aims to offer a critical assessment of the existing evidence concerning the application of STE in patients with liver cirrhosis.
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Affiliation(s)
- Yannis Dimitroglou
- First Department of Cardiology, Medical School, National and Kapodistrian University of Athens, Hippokration General Hospital, 115 27 Athens, Greece; (C.A.); (D.T.); (D.P.); (M.K.); (K.T.)
| | - Constantina Aggeli
- First Department of Cardiology, Medical School, National and Kapodistrian University of Athens, Hippokration General Hospital, 115 27 Athens, Greece; (C.A.); (D.T.); (D.P.); (M.K.); (K.T.)
| | - Alexandra Alexopoulou
- Second Department of Medicine & Research Laboratory, Medical School, National and Kapodistrian University of Athens, Hippokration General Hospital, 115 27 Athens, Greece;
| | - Dimitrios Tsartsalis
- First Department of Cardiology, Medical School, National and Kapodistrian University of Athens, Hippokration General Hospital, 115 27 Athens, Greece; (C.A.); (D.T.); (D.P.); (M.K.); (K.T.)
| | - Dimitrios Patsourakos
- First Department of Cardiology, Medical School, National and Kapodistrian University of Athens, Hippokration General Hospital, 115 27 Athens, Greece; (C.A.); (D.T.); (D.P.); (M.K.); (K.T.)
| | - Markos Koukos
- First Department of Cardiology, Medical School, National and Kapodistrian University of Athens, Hippokration General Hospital, 115 27 Athens, Greece; (C.A.); (D.T.); (D.P.); (M.K.); (K.T.)
| | - Dimitris Tousoulis
- First Department of Cardiology, Medical School, National and Kapodistrian University of Athens, Hippokration General Hospital, 115 27 Athens, Greece; (C.A.); (D.T.); (D.P.); (M.K.); (K.T.)
| | - Konstantinos Tsioufis
- First Department of Cardiology, Medical School, National and Kapodistrian University of Athens, Hippokration General Hospital, 115 27 Athens, Greece; (C.A.); (D.T.); (D.P.); (M.K.); (K.T.)
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Liu H, Naser JA, Lin G, Lee SS. Cardiomyopathy in cirrhosis: From pathophysiology to clinical care. JHEP Rep 2024; 6:100911. [PMID: 38089549 PMCID: PMC10711481 DOI: 10.1016/j.jhepr.2023.100911] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 08/24/2023] [Accepted: 08/31/2023] [Indexed: 01/12/2024] Open
Abstract
Cirrhotic cardiomyopathy (CCM) is defined as systolic or diastolic dysfunction in the absence of prior heart disease or another identifiable cause in patients with cirrhosis, in whom it is an important determinant of outcome. Its underlying pathogenic/pathophysiological mechanisms are rooted in two distinct pathways: 1) factors associated with portal hypertension, hyperdynamic circulation, gut bacterial/endotoxin translocation and the resultant inflammatory phenotype; 2) hepatocellular insufficiency with altered synthesis or metabolism of substances such as proteins, lipids, carbohydrates, bile acids and hormones. Different criteria have been proposed to diagnose CCM; the first in 2005 by the World Congress of Gastroenterology, and more recently in 2019 by the Cirrhotic Cardiomyopathy Consortium. These criteria mainly utilised echocardiographic evaluation, with the latter refining the evaluation of diastolic function and integrating global longitudinal strain into the evaluation of systolic function, an important addition since the haemodynamic changes that occur in advanced cirrhosis may lead to overestimation of systolic function by left ventricular ejection fraction. Advances in cardiac imaging, such as cardiac magnetic resonance imaging and the incorporation of an exercise challenge, may help further refine the diagnosis of CCM. Over recent years, CCM has been shown to contribute to increased mortality and morbidity after major interventions, such as liver transplantation and transjugular intrahepatic portosystemic shunt insertion, and to play a pathophysiologic role in the genesis of hepatorenal syndrome. In this review, we discuss the pathogenesis/pathophysiology of CCM, its clinical implications, and the role of cardiac imaging modalities including MRI. We also compare diagnostic criteria and review the potential diagnostic role of electrocardiographic QT prolongation. At present, no definitive medical therapy exists, but some promising potential treatment strategies for CCM are reviewed.
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Affiliation(s)
- Hongqun Liu
- Liver Unit, University of Calgary Cumming School of Medicine, Calgary, AB, Canada
| | - Jwan A. Naser
- Division of Cardiology, Mayo Clinic, Rochester, MN, USA
| | - Grace Lin
- Division of Cardiology, Mayo Clinic, Rochester, MN, USA
| | - Samuel S. Lee
- Liver Unit, University of Calgary Cumming School of Medicine, Calgary, AB, Canada
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Groen RA, Ajmone Marsan N, Jukema JW, Coenraad MJ. Assessment of myocardial dysfunction in cirrhotic patients: Should we look at the left atrium rather than at the left ventricle? Liver Int 2023; 43:2586-2588. [PMID: 38011641 DOI: 10.1111/liv.15755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 09/21/2023] [Indexed: 11/29/2023]
Affiliation(s)
- Roos A Groen
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Nina Ajmone Marsan
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
| | - J Wouter Jukema
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
- The Netherlands Heart Institute, Utrecht, The Netherlands
| | - Minneke J Coenraad
- Department of Gastroenterology, Leiden University Medical Center, Leiden, The Netherlands
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Skouloudi M, Bonou MS, Adamantou M, Parastatidou D, Kapelios C, Masoura K, Efstathopoulos E, Aggeli C, Papatheodoridis GV, Barbetseas J, Cholongitas E. Left atrial strain and ventricular global longitudinal strain in cirrhotic patients using the new criteria of Cirrhotic Cardiomyopathy Consortium. Liver Int 2023; 43:2727-2742. [PMID: 37641813 DOI: 10.1111/liv.15714] [Citation(s) in RCA: 2] [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: 05/09/2023] [Revised: 07/13/2023] [Accepted: 08/15/2023] [Indexed: 08/31/2023]
Abstract
BACKGROUND The new criteria of Cirrhotic Cardiomyopathy Consortium (CCC) propose the use of left ventricular global longitudinal strain (LV-GLS) for evaluation of systolic function in patients with cirrhosis. The aim of this study was to evaluate LV-GLS and left atrial (LA) strain in association with the severity of liver disease and to assess the characteristics of cirrhotic cardiomyopathy (CCM). METHODS One hundred and thirty-five cirrhotic patients were included. Standard echocardiography and speckle tracking echocardiography (2D-STE) were performed, and dual X-ray absorptiometry was used to quantify the total and regional fat mass. CCM was defined, based on the criteria of CCC, as having advanced diastolic dysfunction, left ventricular ejection fraction ≤50% and/or a GLS <18%. RESULTS LV-GLS lower or higher than the absolute mean value (22.7%) was not associated with mortality (logrank, p = 0.96). LV-GLS was higher in patients with Model for end stage liver disease (MELD) score ≥15 compared to MELD score <15 (p = 0.004). MELD score was the only factor independently associated with systolic function (LV-GLS <22.7% vs. ≥22.7%) (Odds Ratio:1.141, p = 0.032). Patients with CCM (n = 11) had higher values of estimated volume of visceral adipose tissue compared with patients without CCM (median: 735 vs. 641 cm3 , p = 0.039). On multivariable Cox regression analysis, MELD score [Hazard Ratio (HR):1.26, p < 0.001] and LA reservoir strain (HR:0.96, p = 0.017) were the only factors independently associated with the outcome. CONCLUSION In our study, absolute LV-GLS was higher in more severe liver disease, and LA reservoir strain was significantly associated with the outcome in patients with end-stage liver disease.
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Affiliation(s)
- Marina Skouloudi
- Department of Cardiology, General Hospital of Athens "Laiko", Athens, Greece
| | - Maria S Bonou
- Department of Cardiology, General Hospital of Athens "Laiko", Athens, Greece
| | - Magdalini Adamantou
- First Department of Internal Medicine, Medical School of National and Kapodistrian University of Athens, General Hospital of Athens "Laiko", Athens, Greece
| | - Despoina Parastatidou
- Department of Gastroenterology, Medical School of National and Kapodistrian University of Athens, General Hospital of Athens "Laiko", Athens, Greece
| | - Christos Kapelios
- Department of Cardiology, General Hospital of Athens "Laiko", Athens, Greece
| | - Konstantina Masoura
- Department of Cardiology, General Hospital of Athens "Laiko", Athens, Greece
| | - Efstathios Efstathopoulos
- 2nd Department of Radiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Constantina Aggeli
- First Department of Cardiology, General Hospital of Athens "Hippokration", National and Kapodistrian University Athens School of Medicine, Athens, Greece
| | - George V Papatheodoridis
- Department of Gastroenterology, Medical School of National and Kapodistrian University of Athens, General Hospital of Athens "Laiko", Athens, Greece
| | - John Barbetseas
- Department of Cardiology, General Hospital of Athens "Laiko", Athens, Greece
| | - Evangelos Cholongitas
- First Department of Internal Medicine, Medical School of National and Kapodistrian University of Athens, General Hospital of Athens "Laiko", Athens, Greece
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Møller S, Wiese S, Barløse M, Hove JD. How non-alcoholic fatty liver disease and cirrhosis affect the heart. Hepatol Int 2023; 17:1333-1349. [PMID: 37770804 DOI: 10.1007/s12072-023-10590-1] [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: 07/25/2023] [Accepted: 08/29/2023] [Indexed: 09/30/2023]
Abstract
Liver diseases affect the heart and the vascular system. Cardiovascular complications appear to be a leading cause of death in patients with non-alcoholic fatty liver disease (NAFLD) and cirrhosis. The predominant histological changes in the liver range from steatosis to fibrosis to cirrhosis, which can each affect the cardiovascular system differently. Patients with cirrhotic cardiomyopathy (CCM) and NAFLD are at increased risk of impaired systolic and diastolic dysfunction and for suffering major cardiovascular events. However, the pathophysiological mechanisms behind these risks differ depending on the nature of the liver disease. Accurate assessment of symptoms by contemporary diagnostic modalities is essential for identifying patients at risk, for evaluating candidates for treatment, and prior to any invasive procedures. This review explores current perspectives within this field.
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Affiliation(s)
- Søren Møller
- Department Clinical Physiology and Nuclear Medicine 260, Center for Functional and Diagnostic Imaging and Research, Hvidovre Hospital, Copenhagen University Hospital, Kettegaards alle 30, 2650, Hvidovre, Denmark.
- Department of Clinical Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Signe Wiese
- Gastro Unit, Medical Division, Hvidovre Hospital, Hvidovre, Denmark
| | - Mads Barløse
- Department Clinical Physiology and Nuclear Medicine 260, Center for Functional and Diagnostic Imaging and Research, Hvidovre Hospital, Copenhagen University Hospital, Kettegaards alle 30, 2650, Hvidovre, Denmark
| | - Jens D Hove
- Department of Clinical Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Cardiology, Hvidovre Hospital, Hvidovre, Denmark
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Luo Y, Yin S, Chen Q, Liu J, Chong Y, Zhong J. Comparison of the 2005 Montreal Criteria and the 2019 Cirrhotic Cardiomyopathy Consortium Criteria for the Diagnosis of Cirrhotic Cardiomyopathy. Am J Cardiol 2023; 208:180-189. [PMID: 37852128 DOI: 10.1016/j.amjcard.2023.09.069] [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: 06/19/2023] [Revised: 09/08/2023] [Accepted: 09/18/2023] [Indexed: 10/20/2023]
Abstract
The comparison between the diagnostic criteria for cirrhotic cardiomyopathy (CCM) first proposed in 2005 (2005 Montreal criteria), and those redefined in the 2019 Cirrhotic Cardiomyopathy Consortium (2019 CCC criteria) has generated significant controversy. Importantly, the predictive value of these criteria in cirrhotic patients (CPs) remains unclear to this date. Thus, the present study aims to compare the 2 sets of criteria and investigate their predictive value in CPs. Between April 2021 and April 2023, a total of 104 CPs with an average age of 46.4 ± 8.9 years, who had no history of other cardiac diseases or malignancies were enrolled in this prospective single-center observational cohort study, conducted at the Third Affiliated Hospital of Sun Yat-Sen University. Various echocardiographic indicators were measured and assessed for their prognostic value and association with clinical outcomes. The prevalence of CCM was found to be comparable when evaluated using both the 2019 CCC and 2005 Montreal criteria (54.8% vs 44.2%, p = 0.161). However, the diagnosis of systolic dysfunction was significantly different between the 2 criteria (52.9% vs 1.0%, p <0.001). Among patients with systolic dysfunction, 27.9% had reduced left ventricular global longitudinal strain, while 25% had increased left ventricular global longitudinal strain. Moreover, fewer patients were diagnosed with diastolic dysfunction (DD) using the 2019 CCC criteria (4.8% vs 44.2%, p <0.001). Multivariate Cox analysis revealed that CPs who had encephalopathy, a high model for end-stage liver disease score, and DD diagnosed using the 2019 CCC criteria exhibited a poorer prognosis. In conclusion, although the prevalence of CCM according to both criteria is similar, the consistency is poor, indicating that they are not the same group of patients. Importantly, CPs with DD diagnosed according to the 2019 CCC criteria might be associated with increased adverse events.
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Affiliation(s)
| | | | - Qian Chen
- Department of Cardiovascular Medicine
| | | | - Yutian Chong
- Department of Infectious Diseases, Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
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Hughes DL, Pan J, Answine AR, Sonnenday CJ, Waits SA, Kumar SS, Menees DS, Wanamaker B, Bhave NM, Tincopa MA, Fontana RJ, Sharma P. Positron emission tomography myocardial perfusion imaging (PET MPI) findings predictive of post-liver transplant major adverse cardiac events. Liver Transpl 2023; 29:970-978. [PMID: 36879556 DOI: 10.1097/lvt.0000000000000118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 01/24/2023] [Indexed: 03/08/2023]
Abstract
Positron emission tomography myocardial perfusion imaging (PET MPI) is a noninvasive diagnostic test capable of detecting coronary artery disease, structural heart disease, and myocardial flow reserve (MFR). We aimed to determine the prognostic utility of PET MPI to predict post-liver transplant (LT) major adverse cardiac events (MACE). Among the 215 LT candidates that completed PET MPI between 2015 and 2020, 84 underwent LT and had 4 biomarker variables of clinical interest on pre-LT PET MPI (summed stress and difference scores, resting left ventricular ejection fraction, global MFR). Post-LT MACE were defined as acute coronary syndrome, heart failure, sustained arrhythmia, or cardiac arrest within the first 12 months post-LT. Cox regression models were constructed to determine associations between PET MPI variable/s and post-LT MACE. The median LT recipient age was 58 years, 71% were male, 49% had NAFLD, 63% reported prior smoking, 51% had hypertension, and 38% had diabetes mellitus. A total of 20 MACE occurred in 16 patients (19%) at a median of 61.5 days post-LT. One-year survival of MACE patients was significantly lower than those without MACE (54% vs. 98%, p =0.001). On multivariate analysis, reduced global MFR ≤1.38 was associated with a higher risk of MACE [HR=3.42 (1.23-9.47), p =0.019], and every % reduction in left ventricular ejection fraction was associated with an 8.6% higher risk of MACE [HR=0.92 (0.86-0.98), p =0.012]. Nearly 20% of LT recipients experienced MACE within the first 12 months of LT. Reduced global MFR and reduced resting left ventricular ejection fraction on PET MPI among LT candidates were associated with increased risk of post-LT MACE. Awareness of these PET-MPI parameters may help improve cardiac risk stratification of LT candidates if confirmed in future studies.
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Affiliation(s)
- Dempsey L Hughes
- Division of Gastroenterology and Hepatology, Northwestern University, Chicago, Illinois, USA
| | - Jason Pan
- Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, Michigan, USA
| | - Adeline R Answine
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Seth A Waits
- Department of Surgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Sathish S Kumar
- Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Daniel S Menees
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Brett Wanamaker
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Nicole M Bhave
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Monica A Tincopa
- Division of Gastroenterology and Hepatology, University of California San Diego, San Diego, California
| | - Robert J Fontana
- Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, Michigan, USA
| | - Pratima Sharma
- Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, Michigan, USA
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Uhlig M, Hein M, Habigt MA, Tolba RH, Braunschweig T, Helmedag MJ, Arici M, Theißen A, Klinkenberg A, Klinge U, Mechelinck M. Cirrhotic Cardiomyopathy Following Bile Duct Ligation in Rats-A Matter of Time? Int J Mol Sci 2023; 24:8147. [PMID: 37175858 PMCID: PMC10249007 DOI: 10.3390/ijms24098147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/28/2023] [Accepted: 04/30/2023] [Indexed: 05/15/2023] Open
Abstract
Cirrhotic patients often suffer from cirrhotic cardiomyopathy (CCM). Previous animal models of CCM were inconsistent concerning the time and mechanism of injury; thus, the temporal dynamics and cardiac vulnerability were studied in more detail. Rats underwent bile duct ligation (BDL) and a second surgery 28 days later. Cardiac function was assessed by conductance catheter and echocardiography. Histology, gene expression, and serum parameters were analyzed. A chronotropic incompetence (Pd31 < 0.001) and impaired contractility at rest and a reduced contractile reserve (Pd31 = 0.03, Pdob-d31 < 0.001) were seen 31 days after BDL with increased creatine (Pd35, Pd42, and Pd56 < 0.05) and transaminases (Pd31 < 0.001). A total of 56 days after BDL, myocardial fibrosis was seen (Pd56 < 0.001) accompanied by macrophage infiltration (CD68: Pgroup < 0.001) and systemic inflammation (TNFα: Pgroup < 0.001, white blood cell count: Pgroup < 0.001). Myocardial expression of peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC1α) was increased after 31 (Pd31 < 0.001) and decreased after 42 (Pd42 < 0.001) and 56 days (Pd56 < 0.001). Caspase-3 expression was increased 31 and 56 days after BDL (Pd31 = 0.005; Pd56 = 0.005). Structural changes in the myocardium were seen after 8 weeks. After the second surgery (second hit), transient myocardial insufficiency with secondary organ dysfunction was seen, characterized by reduced contractility and contractile reserve.
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Affiliation(s)
- Moritz Uhlig
- Department of Anesthesiology, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany; (M.H.); (M.A.H.); (A.T.); (M.M.)
| | - Marc Hein
- Department of Anesthesiology, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany; (M.H.); (M.A.H.); (A.T.); (M.M.)
| | - Moriz A. Habigt
- Department of Anesthesiology, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany; (M.H.); (M.A.H.); (A.T.); (M.M.)
| | - René H. Tolba
- Institute for Laboratory Animal Science and Experimental Surgery, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany;
| | - Till Braunschweig
- Department of Pathology, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany;
| | - Marius J. Helmedag
- Department of General, Visceral and Transplantation Surgery, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany; (M.J.H.); (U.K.)
| | - Melissa Arici
- Luisenhospital, 52064 Aachen, Germany; (M.A.); (A.K.)
| | - Alexander Theißen
- Department of Anesthesiology, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany; (M.H.); (M.A.H.); (A.T.); (M.M.)
| | | | - Uwe Klinge
- Department of General, Visceral and Transplantation Surgery, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany; (M.J.H.); (U.K.)
| | - Mare Mechelinck
- Department of Anesthesiology, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany; (M.H.); (M.A.H.); (A.T.); (M.M.)
- Institute for Laboratory Animal Science and Experimental Surgery, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany;
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10
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Bi S, Jiang Y, Zhao W, Niu X, Liu X, Jing X. The predictive value of revised diastolic dysfunction in outcomes of liver transplantation: A propensity score matching analysis. Front Surg 2023; 9:1072908. [PMID: 36684235 PMCID: PMC9852983 DOI: 10.3389/fsurg.2022.1072908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 12/12/2022] [Indexed: 01/07/2023] Open
Abstract
Background Diastolic dysfunction (DD), one of the earliest signs of cirrhotic cardiomyopathy (CCM), is included in the revised 2019 CCM criteria. Nonetheless, relevant research regarding the effects of revised DD on post-liver transplantation (LT) outcomes remains limited. Methods This retrospective study enrolled patients who underwent LT for decompensated cirrhosis, from January 2018 to March 2021. Patients were divided into DD and non-DD groups. Clinical data were collected. Patients were followed up with, for at least 1 year post-LT; cardiovascular adverse events (AEs) and survival status were recorded. Risk factors were identified using 1:2 propensity score matching (PSM), after adjusting for confounding factors. The caliper value was set to 0.02. Results Of 231 patients, 153 were diagnosed with DD (male, 81.8%; mean age, 51.5 ± 9.5 years). Nineteen patients with DD died within 1 year, post-LT. After PSM, 97 and 60 patients were diagnosed with and without DD, respectively. Patients with DD had longer intensive care unit (ICU) stays, higher perioperative cardiovascular AEs, and higher mortality rates than those without DD. In a multivariate analysis, interventricular septum (IVS), left atrial volume index (LAVI), and potassium levels were independent prognostic factors of perioperative cardiovascular AEs, while a decreased early diastolic mitral annular tissue velocity (e'), increased neutrophil-to-lymphocyte ratio (NLR) and tumor markers were predictors of mortality within 1 year post-LT after PSM (P < 0.05). Conclusion Cardiac DD may contribute to perioperative cardiovascular AEs and mortality post-LT. Clinicians should be aware of decompensated cirrhosis in patients with DD.
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Affiliation(s)
- Shenghua Bi
- Gastroenterology Department, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yueping Jiang
- Gastroenterology Department, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wenjun Zhao
- Gastroenterology Department, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaoyan Niu
- Department of Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xuechun Liu
- Gastroenterology Department, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xue Jing
- Gastroenterology Department, The Affiliated Hospital of Qingdao University, Qingdao, China,Correspondence: Xue Jing
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Meucci MC, Hoogerduijn Strating MM, Butcher SC, van Rijswijk CSP, Van Hoek B, Delgado V, Bax JJ, Tushuizen ME, Marsan NA. Left atrial dysfunction is an independent predictor of mortality in patients with cirrhosis treated by transjugular intrahepatic portosystemic shunt. Hepatol Commun 2022; 6:3163-3174. [PMID: 36029167 PMCID: PMC9592786 DOI: 10.1002/hep4.2062] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 07/09/2022] [Accepted: 07/18/2022] [Indexed: 12/14/2022] Open
Abstract
The present study aimed to investigate (1) the association between left ventricular diastolic dysfunction (LVDD), graded according to the algorithm proposed by the Cirrhotic Cardiomyopathy Consortium, and long-term survival in patients with cirrhosis undergoing transjugular intrahepatic portosystemic shunt (TIPS) and (2) the additive prognostic value of left atrial (LA) function, as assessed by LA reservoir strain, using two-dimensional speckle-tracking echocardiography (2D-STE). A total of 129 TIPS candidates (mean ± SD, 61 ± 12 years; 61% men) underwent a comprehensive preprocedural echocardiography. LA dysfunction was defined by LA reservoir strain ≤35%, based on a previously suggested cut-off value. The outcome was all-cause mortality after TIPS. In the current cohort, 65 (50%) patients had normal diastolic function, 26 (20%) patients had grade 1 LVDD, 21 (16%) patients had grade 2 LVDD, and 17 (13%) patients had indeterminate diastolic function. Additionally, LA dysfunction (based on LA reservoir strain ≤35%) was noted in 67 (52%) patients. After a median follow-up of 36 months (range, 12-80), 65 (50%) patients died. All-cause mortality rates increased along worse grades of LVDD (log-rank p = 0.007) and with LA dysfunction (log-rank p = 0.001). On multivariable Cox regression analysis, Model for End-Stage Liver Disease score (hazard ratio [HR],1.06; p = 0.003), hemoglobin (HR, 0.74; p = 0.022), and LA strain, expressed as a continuous variable (HR, 0.96; p = 0.005) were independently associated with all-cause mortality. Notably, the addition of LA strain to the model provided incremental prognostic value over the established prognostic variables (delta χ2 = 8.27, p = 0.004). Conclusion: LA dysfunction assessed with 2D-STE is independently associated with all-cause mortality in patients with cirrhosis treated by TIPS.
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Affiliation(s)
- Maria Chiara Meucci
- Department of CardiologyLeiden University Medical CenterLeidenthe Netherlands
- Department of Cardiovascular MedicineFondazione Policlinico Universitario A. Gemelli IRCSSRomeItaly
| | - Merte M. Hoogerduijn Strating
- Department of Gastroenterology and Hepatology, Transplantation CenterLeiden University Medical CenterLeidenthe Netherlands
| | - Steele C. Butcher
- Department of CardiologyLeiden University Medical CenterLeidenthe Netherlands
- Department of CardiologyRoyal Perth HospitalPerthAustralia
| | | | - Bart Van Hoek
- Department of Gastroenterology and Hepatology, Transplantation CenterLeiden University Medical CenterLeidenthe Netherlands
| | - Victoria Delgado
- Department of CardiologyLeiden University Medical CenterLeidenthe Netherlands
- Hospital University Germans Trias i Pujol, Fundació Institut d'Investigació en Ciències de la Salut Germans Trias i PujolBadalonaSpain
| | - Jeroen J. Bax
- Department of CardiologyLeiden University Medical CenterLeidenthe Netherlands
- Heart CenterUniversity of Turku and Turku University HospitalTurkuFinland
| | - Maarten E. Tushuizen
- Department of Gastroenterology and Hepatology, Transplantation CenterLeiden University Medical CenterLeidenthe Netherlands
| | - Nina Ajmone Marsan
- Department of CardiologyLeiden University Medical CenterLeidenthe Netherlands
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12
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Ridjab DA, Ivan I, Budiman F, Tenggara R. Evaluation of subclinical ventricular systolic dysfunction assessed using global longitudinal strain in liver cirrhosis: A systematic review, meta-analysis, and meta-regression. PLoS One 2022; 17:e0269691. [PMID: 35671306 PMCID: PMC9173645 DOI: 10.1371/journal.pone.0269691] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 05/25/2022] [Indexed: 11/24/2022] Open
Abstract
Global longitudinal strain (GLS) can identify subclinical myocardial dysfunction in patients with cirrhosis. This systematic review aims to provide evidence of a possible difference in GLS values between patients with cirrhosis and patients without cirrhosis. Studies from inception to August 11, 2021, were screened and included based on the inclusion criteria. The Newcastle Ottawa Scale was used to assess the quality of nonrandomized studies. Meta-analyses were conducted with subsequent sensitivity and subgroup analyses according to age, sex, cirrhosis etiology, and severity. Publication bias was evaluated using Begg’s funnel plot, Egger’s test, and rank correlation test with subsequent trim-and-fill analysis. The systematic database search yielded 20 eligible studies. Random effect showed a significant reduction of left ventricular (LV) GLS (MD:-1.43;95%; 95%CI,-2.79 to -0.07; p = 0.04; I2 = 95% p<0.00001) and right ventricular (RV) GLS (MD:-1.95; 95%CI,-3.86 to -0.05, p = 0.04; I2 = 90%, p<0.00001) in the group with cirrhosis. A sensitivity test on subgroup analysis based on the study design showed a -1.78% lower LV-GLS in the group with cirrhosis (I2 = 70%, p = 0.0003). Meta-regression analysis showed that the severity of cirrhosis was significantly related to GLS reduction. This research received no specific grants from any funding agency in the public, commercial, or not-for-profit sectors. The study protocol was registered at PROSPERO (CRD42020201630). We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 statement guidelines.
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Affiliation(s)
- Denio A. Ridjab
- Department of Medical Education Unit, School of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia
- * E-mail:
| | - Ignatius Ivan
- Fifth Year Medical Student, School of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia
| | - Fanny Budiman
- Fifth Year Medical Student, School of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia
| | - Riki Tenggara
- Department of Internal Medicine, School of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia
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Affiliation(s)
- Hongqun Liu
- Liver Unit, University of Calgary Cumming School of Medicine, Calgary, AB, Canada
| | - Samuel S Lee
- Liver Unit, University of Calgary Cumming School of Medicine, Calgary, AB, Canada
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Cardiovascular Evaluation of Liver Transplant Patients by Using Coronary Calcium Scoring in ECG-Synchronized Computed Tomographic Scans. J Clin Med 2021; 10:jcm10215148. [PMID: 34768667 PMCID: PMC8584855 DOI: 10.3390/jcm10215148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/22/2021] [Accepted: 11/01/2021] [Indexed: 12/04/2022] Open
Abstract
Background: The goal of cardiac evaluation of patients awaiting orthotopic liver transplantation (OLT) is to identify the patients at risk for cardiovascular events (CVEs) in the peri- and postoperative periods by opportunistic evaluation of coronary artery calcium (CAC) in non-gated abdominal computed tomographs (CT). Methods: We hypothesized that in patients with OLT, a combination of Lee’s revised cardiac index (RCRI) and CAC scoring would improve diagnostic accuracy and prognostic impact compared to non-invasive cardiac testing. Therefore, we retrospectively evaluated 169 patients and compared prediction of CVEs by both methods. Results: Standard workup identified 22 patients with a high risk for CVEs during the transplant period, leading to coronary interventions. Eighteen patients had a CVE after transplant and a CAC score > 0. The combination of CAC and RCRI ≥ 2 had better negative (NPV) and positive predictive values (PPV) for CVEs (NPV 95.7%, PPV 81.6%) than standard non-invasive stress tests (NPV 92.0%, PPV 54.5%). Conclusion: The cutoff value of CAC > 0 by non-gated CTs combined with RCRI ≥ 2 is highly sensitive for identifying patients at risk for CVEs in the OLT population.
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Prevalence and prognostic value of cirrhotic cardiomyopathy as defined according to the proposed new classification. Clin Exp Hepatol 2021; 7:270-277. [PMID: 34712828 PMCID: PMC8527346 DOI: 10.5114/ceh.2021.108708] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 04/12/2021] [Indexed: 11/17/2022] Open
Abstract
Aim of the study Prevalence and prognostic relevance of cirrhotic cardiomyopathy (CCM), as defined according to the new core criteria proposed in 2019, are still unknown. We investigated this relevant issue in a large cohort of cirrhotic patients. Material and methods We retrospectively interrogated a data set of 162 collected cirrhotic patients followed up for at least 6 years, who underwent standard Doppler echocardiography and were compared with 46 healthy subjects. Left ventricular (LV) geometry, systo-diastolic function, global longitudinal strain and the main hemodynamic parameters were assessed according to current guidelines. Systolic dysfunction was diagnosed if LV ejection fraction (LVEF) ≤ 50% and/or global longitudinal strain (GLS) < 18% or > 22%. Results Adequate echocardiographic images permitting speckle tracking analysis were available in 83 patients. No patient presented LVEF ≤ 50%, GLS < 18% or > 22% was evident in 25%, advanced diastolic dysfunction was evident in 10%. Overall the prevalence of CCM was 29%. Patients with and without CCM presented similar clinical, biochemical, hemodynamic and echocardiographic features at baseline and similar incidence of death or type 1 hepatorenal syndrome at follow-up. Conclusions According to the new criteria CCM is detected in 29%, mainly due to altered GLS at rest, but without prognostic relevance and therefore useless for the clinical management of cirrhotic patients. We propose to modify the criteria by removing the LVEF assessment and adding also a stress test assessing the cardiac contractile reserve to distinguish patients with a blunted cardiac response, which could present a worst prognosis.
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16
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Echocardiography in the Liver Transplant Patient. Curr Cardiol Rep 2021; 23:110. [PMID: 34216273 DOI: 10.1007/s11886-021-01531-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/17/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE OF REVIEW The aim of this study is to review current echocardiographic modalities utilized in the assessment of the preoperative liver transplant candidate with an emphasis on newer techniques. We sought to assess if newer methods imparted additional diagnostic or prognostic accuracy compared to prior methods based on existing studies. RECENT FINDINGS Standard dobutamine stress echocardiography offers important information regarding operative risk and post-operative survival in liver transplant candidates; however, technologies such as speckle-tracking echocardiography (STE) and evaluation of diastolic function have emerged as useful tools as well. 2D-STE and diastolic echocardiography offer additional parameters such as global longitudinal strain and measures of diastolic dysfunction that can better predict peri-operative and post-operative complications in liver transplant candidates. If able, practitioners should utilize these methods routinely in their assessment of liver transplant candidates.
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17
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Abstract
PURPOSE OF REVIEW Cirrhotic cardiomyopathy (CCM) is a well-recognized entity. When patients with CCM encounter challenges such as liver transplantation, overt cardiac dysfunction manifests, leading to morbidity and mortality. Although revised diagnostic criteria for CCM have recently been proposed, these still need to be validated. RECENT FINDINGS Previous reviews have summarized the mechanisms of CCM, such as abnormalities of the β-adrenergic pathway, cardiac plasma membrane biophysical and biochemical properties, and electrophysiological changes. Cardiomyocyte apoptosis, inflammation, and oxidative stress also play important roles. The present review details further mechanisms of CCM, which include myosin heavy chain isoform shifts and abnormalities in cellular calcium transients. Additionally, we review recent studies on therapeutic strategies. Recent work underscores the importance of CCM in the natural history of the immediate and medium-term postoperative period after liver transplantation. Appropriate management strategies for CCM remain the area of greatest unmet need, requiring much further research. SUMMARY CCM is a clinically relevant syndrome affecting patients with cirrhosis, leading to increased morbidity and mortality. New diagnostic criteria have been recently proposed by an expert working group. The pathogenic mechanisms remain incompletely clarified and optimal management strategies need much further study.
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18
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Abstract
Cirrhotic cardiomyopathy (CCM), cardiac dysfunction in end-stage liver disease in the absence of prior heart disease, is an important clinical entity that contributes significantly to morbidity and mortality. The original definition for CCM, established in 2005 at the World Congress of Gastroenterology (WCG), was based upon known echocardiographic parameters to identify subclinical cardiac dysfunction in the absence of overt structural abnormalities. Subsequent advances in cardiovascular imaging and in particular myocardial deformation imaging have rendered the WCG criteria outdated. A number of investigations have explored other factors relevant to CCM, including serum markers, electrocardiography, and magnetic resonance imaging. CCM characteristics include a hyperdynamic circulatory state, impaired contractility, altered diastolic relaxation, and electrophysiological abnormalities, particularly QT interval prolongation. It is now known that cardiac dysfunction worsens with the progression of cirrhosis. Treatment for CCM has traditionally been limited to supportive efforts, but new pharmacological studies appear promising. Left ventricular diastolic dysfunction in CCM can be improved by targeted heart rate reduction. Ivabradine combined with carvedilol improves left ventricular diastolic dysfunction through targeted heart rate reduction, and this regimen can improve survival in patients with cirrhosis. Orthotopic liver transplantation also appears to improve CCM. Here, we canvass diagnostic challenges associated with CCM, introduce cardiac physiology principles and the application of echocardiographic techniques, and discuss the evidence behind therapeutic interventions in CCM.
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von Köckritz F, Braun A, Schmuck RB, Dobrindt EM, Eurich D, Heinzel FR, Pieske B, Escher F, Zhang K. Speckle Tracking Analysis Reveals Altered Left Atrial and Ventricular Myocardial Deformation in Patients with End-Stage Liver Disease. J Clin Med 2021; 10:jcm10050897. [PMID: 33668295 PMCID: PMC7956617 DOI: 10.3390/jcm10050897] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/20/2021] [Accepted: 02/14/2021] [Indexed: 02/07/2023] Open
Abstract
Background: Cardiac function can be influenced by liver cirrhosis and should be thoroughly evaluated before liver transplantation. We investigated left ventricular (LV) and, for the first time, left atrial (LA) strain and strain rate in end-stage liver cirrhosis patients of different etiologies. Methods: This retrospective, cross-sectional study evaluated left heart function in 80 cirrhosis patients and 30 controls using standardized echocardiographic techniques and speckle tracking technology (STE) analysis. Serum markers of liver function were used for correlation analysis. Results: While conventional parameters demonstrated no alteration in systolic function, speckle tracking analysis showed a significant increase in LV longitudinal strain throughout all cardiac layers, with significant correlation to model of end-stage liver disease (MELD) score. LA reservoir and conduit strain as well as LA strain rate in all phases were significantly reduced in end-stage liver disease (ESLD) patients compared to control. STE for the evaluation of LA phasic function seemed to be more sensitive than volumetric methods. Kaplan-Meier curves showed a trend towards reduced post-transplant survival in patients with a reduced LA reservoir and conduit strain. Conclusion: STE analysis detected increased LV and decreased LA deformation in cirrhosis patients, thus proving to be highly sensitive to cardiac changes and useful for more precise cardiac evaluation.
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Affiliation(s)
- Franzisca von Köckritz
- Department of Internal Medicine and Cardiology, Campus Virchow-Klinikum, Charité—Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; (F.v.K.); (A.B.); (F.R.H.); (B.P.); (F.E.)
| | - Alexander Braun
- Department of Internal Medicine and Cardiology, Campus Virchow-Klinikum, Charité—Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; (F.v.K.); (A.B.); (F.R.H.); (B.P.); (F.E.)
| | - Rosa B. Schmuck
- Department of Surgery, Campus Charité Mitte and Campus Virchow Klinikum, Charité—Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; (R.B.S.); (E.M.D.); (D.E.)
| | - Eva M. Dobrindt
- Department of Surgery, Campus Charité Mitte and Campus Virchow Klinikum, Charité—Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; (R.B.S.); (E.M.D.); (D.E.)
| | - Dennis Eurich
- Department of Surgery, Campus Charité Mitte and Campus Virchow Klinikum, Charité—Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; (R.B.S.); (E.M.D.); (D.E.)
| | - Frank R. Heinzel
- Department of Internal Medicine and Cardiology, Campus Virchow-Klinikum, Charité—Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; (F.v.K.); (A.B.); (F.R.H.); (B.P.); (F.E.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
| | - Burkert Pieske
- Department of Internal Medicine and Cardiology, Campus Virchow-Klinikum, Charité—Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; (F.v.K.); (A.B.); (F.R.H.); (B.P.); (F.E.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
- Berlin Institute of Health (BIH), 10178 Berlin, Germany
- German Heart Center Berlin, Department of Internal Medicine and Cardiology, 13353 Berlin, Germany
| | - Felicitas Escher
- Department of Internal Medicine and Cardiology, Campus Virchow-Klinikum, Charité—Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; (F.v.K.); (A.B.); (F.R.H.); (B.P.); (F.E.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
| | - Kun Zhang
- Department of Internal Medicine and Cardiology, Campus Virchow-Klinikum, Charité—Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; (F.v.K.); (A.B.); (F.R.H.); (B.P.); (F.E.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, 10785 Berlin, Germany
- Berlin Institute of Health (BIH), 10178 Berlin, Germany
- Correspondence: ; Tel.: +49-30-450659746
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