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Matsuo O, Ishii M, Kaikita K, Morinaga J, Miyamura F, Matsumoto S, Tsujita K, Nakamura K. Utility of the Total Thrombus-Formation Analysis System as a Tool for Evaluating Thrombogenicity and Monitoring Antithrombotic Therapy in Pediatric Fontan Patients. Pediatr Cardiol 2022; 44:1150-1159. [PMID: 36550317 DOI: 10.1007/s00246-022-03076-8] [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] [Received: 09/16/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND There is no consensus regarding thromboprophylaxis after Fontan procedure, and novel tools to assess thrombogenicity are needed to establish optimal thromboprophylaxis. The Total Thrombus-formation Analysis System (T-TAS) was developed for the quantitative analysis of thrombus formation using microchips with thrombogenic surfaces. This prospective study evaluated the utility of T-TAS in the assessment of thrombogenicity in pediatric Fontan patients. METHODS AND RESULTS The participants included 20 consecutive Fontan patients who underwent cardiac catheterization and 30 healthy controls. Blood samples collected without and with antithrombotic therapy (aspirin or aspirin and warfarin) were used for T-TAS to compute the area under the curve (AUC) in the atheroma (AR10-AUC30) and platelet (PL18-AUC10) chips. A higher AUC indicates higher thrombogenicity. T-TAS values showed that patients in the Fontan group without antithrombotic therapy had lower thrombogenicity than those in the control group [PL18-AUC10, median (interquartile range) 356 (313-394) vs. 408 (392-424); AR10-AUC30, median (interquartile range) 1270 (1178-1351) vs. 1382 (1338-1421)]. Aspirin and warfarin therapies significantly decreased PL18-AUC10 and AR10-AUC30, respectively, compared with those of patients without antithrombotic therapy (P < 0.001 for each comparison). Subgroup analysis divided by low (< 9 mmHg) or high (≥ 9 mmHg) central venous pressure (CVP) showed that CVP affects the reduction in AR10-AUC30 with antithrombotic therapy. CONCLUSIONS T-TAS may be a useful tool for monitoring thrombogenicity and antithrombotic therapy in Fontan patients.
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Affiliation(s)
- Osamu Matsuo
- Department of Pediatrics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Masanobu Ishii
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-Ku, Kumamoto City, Kumamoto, 860-8556, Japan.
| | - Koichi Kaikita
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-Ku, Kumamoto City, Kumamoto, 860-8556, Japan.,Division of Cardiovascular Medicine and Nephrology, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Jun Morinaga
- Department of Clinical Investigation, Kumamoto University Hospital, Kumamoto, Japan
| | - Fumiya Miyamura
- Department of Pediatrics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Shiro Matsumoto
- Department of Pediatrics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kenichi Tsujita
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-Ku, Kumamoto City, Kumamoto, 860-8556, Japan
| | - Kimitoshi Nakamura
- Department of Pediatrics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
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2
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Chaloupecký V, Jičínská D, Tomek V, Materna O, Gebauer R, Poruban R, Antonová P, Adla T, Štefánek M, Illinger V, Kotaška K, Janoušek J. Impact of liver fibrosis and nodules formation on hemodynamics in young adults after total cavopulmonary connection. A magnetic resonance study. Front Cardiovasc Med 2022; 9:986653. [PMID: 36247450 PMCID: PMC9558211 DOI: 10.3389/fcvm.2022.986653] [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: 07/05/2022] [Accepted: 09/08/2022] [Indexed: 11/15/2022] Open
Abstract
Background The aim of this study was to analyze the relation between the hepatic fibrosis markers, liver morphology and hemodynamics assessed by magnetic resonance imaging (MRI) after total cavopulmonary connection (TCPC). Materials and methods Adult patients after TCPC performed in childhood between 1993 and 2003 are the subjects of this observational study. The follow-up protocol consisted of clinical and echocardiographic examination, liver elastography, cardiopulmonary exercise test, MRI hemodynamics and liver morphology assessment and direct enhanced liver fibrosis (ELF) test. Results The cohort consisted of 39 patients (46% female) with a median age at study 26 (IQR 23–28) years and interval from TCPC 21 (IQR 20–23) years. There was no correlation between ELF test and any MRI variables, but procollagen III amino-terminal peptide (PIIINP), a single component of ELF test, correlated significantly with ventricular end-diastolic volume (r = 0.33; p = 0.042) and inferior vena cava flow (r = 0.47; p = 0.003). Fifteen (38%) patients with liver nodules had compared to other 24 patients higher end-diastolic volume (ml/m2) 102.8 ± 20.0 vs. 88.2 ± 17.7; p = 0.023, respectively. PIIINP correlated significantly with inferior vena cava flow (r = 0.56; p = 0.030) and with end-diastolic volume (r = 0.53; p = 0.043), but only in patients with liver nodules. Conclusion Gradual progression of liver fibrosis, particularly hepatic arterialization caused by liver nodules formation, increases inferior vena cava flow and subsequent ventricular volume overload may further compromise single ventricle functional reserve in adult patients after TCPC.
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Affiliation(s)
- Václav Chaloupecký
- Children’s Heart Centre, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
- *Correspondence: Václav Chaloupecký,
| | - Denisa Jičínská
- Children’s Heart Centre, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
| | - Viktor Tomek
- Children’s Heart Centre, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
| | - Ondřej Materna
- Children’s Heart Centre, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
| | - Roman Gebauer
- Children’s Heart Centre, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
| | - Rudolf Poruban
- Children’s Heart Centre, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
| | - Petra Antonová
- Department of Cardiovascular Surgery, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
| | - Theodor Adla
- Department of Radiology, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
| | - Matěj Štefánek
- Department of Radiology, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
| | - Vojtěch Illinger
- Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
| | - Karel Kotaška
- Department of Medical Chemistry and Clinical Biochemistry, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
| | - Jan Janoušek
- Children’s Heart Centre, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia
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Influence of fenestration on long-term Fontan survival. Cardiol Young 2022; 32:1021-1026. [PMID: 34462027 DOI: 10.1017/s1047951121003516] [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] [Indexed: 11/06/2022]
Abstract
INTRODUCTION Fenestration in the total cavopulmonary connection system may improve the outcome of patients with significant risk factors for Fontan haemodynamics. Our study aims to analyse the difference in long-term survival between non-fenestrated and fenestrated patients. METHODS All consecutive patients (n = 351) who underwent total cavopulmonary connection between 1992 and 2016 were identified. Six early deaths were excluded resulting in a group of 345 patients. Median (interquartile range,) length of follow-up was 14.4 (7.1-19.7) years. Freedom from the composite endpoint of death, total cavopulmonary connection take-down or indication for a heart transplant was analysed. RESULTS Fenestration was absent in 237 patients (68.7%, Group 1), was created and closed later in 79 patients (22.9%, Group 2), and remained open in 29 patients (8.4%, Group 3). Mean survival probability until composite endpoint was 97.1 and 92.9% at 10 and 20 years, respectively. Patients with patent fenestration had worse survival (p < 0.001) as compared to both the non-fenestrated and fenestration closure groups. Despite a similar outcome, exercise capacity was lower in Group 2 than 1 (p = 0.013). In 58 patients with interventional fenestration closure, Nakata index was lower at the time of closure than pre-operatively, and both the pressure in the circuit and oxygen saturation in the aorta increased significantly (p < 0.001). CONCLUSIONS Patients with persisting risk factors preventing fenestration closure are at higher risk of reaching the composite endpoint. Patients after fenestration closure have the worse functional outcome; their survival is, however, not different from the non-fenestrated group.
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Sato M, Asagai S, Harada G, Shimada E, Inai K. Platelet volume indices correlate to severity of heart failure and have prognostic value for both cardiac and thrombotic events in patients with congenital heart disease. Heart Vessels 2022; 37:2107-2118. [PMID: 35761122 DOI: 10.1007/s00380-022-02112-0] [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] [Received: 03/12/2022] [Accepted: 05/25/2022] [Indexed: 01/19/2023]
Abstract
Patients with heart failure (HF) reportedly have activated platelets with increased platelet distribution width (PDW) and mean platelet volume (MPV), which lead to thrombotic events. These platelet indices are easily measured by routine blood tests and have been proposed as potential markers of cardiac events. We performed the present study to clarify whether platelet indices correlate to the severity of HF and to the prognosis of patients with congenital heart disease (CHD). We performed a retrospective single-center study including 400 patients with CHD [median age, 34 years (range 12-76); 49% males] hospitalized between 2014 and 2017. We assessed their clinical data, correlation between platelet indices and severity of HF, and prognosis of HF-related hospitalization and thrombus formation. In multivariate analysis, a significant correlation was found between PDW and logBNP (log-transformed brain natriuretic peptide; r = 0.30, p < 0.001), as well as between MPV and logBNP (r = 0.24, p < 0.001). After treatment for heart failure, a significant reduction was found in PDW (average value before treatment: 14.2; after: 13.2, p = 0.017). In multivariate logistic regression analysis, PDW [hazard ratio (HR) 1.365; 95% confidence interval (CI) 1.005-1.768] and MPV (HR 1.472; 95% CI 1.055-2.052) were predictors of HF-related hospitalization. Similarly, PDW (HR 1.998; 95% CI 1.461-2.630) and MPV (HR 1.792; 95% CI 1.155-2.781) were predictors of thrombus formation. Platelet volume indices correlate to severity of heart failure and have prognostic value for both cardiac and thrombotic events in patients with CHD.
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Affiliation(s)
- Masaki Sato
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, 8-1 Kawadacho, Shinjuku-ku, Tokyo, 162 8666, Japan
| | - Seiji Asagai
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, 8-1 Kawadacho, Shinjuku-ku, Tokyo, 162 8666, Japan
| | - Gen Harada
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, 8-1 Kawadacho, Shinjuku-ku, Tokyo, 162 8666, Japan
| | - Eriko Shimada
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, 8-1 Kawadacho, Shinjuku-ku, Tokyo, 162 8666, Japan
| | - Kei Inai
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women's Medical University, 8-1 Kawadacho, Shinjuku-ku, Tokyo, 162 8666, Japan.
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5
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Girnius A, Zentner D, Valente AM, Pieper PG, Economy KE, Ladouceur M, Roos-Hesselink JW, Warshak C, Partington SL, Gao Z, Ollberding N, Faust M, Girnius S, Kaemmerer H, Nagdyman N, Cohen S, Canobbio M, Akagi T, Grewal J, Bradley E, Buber Y, Palumbo J, Walker N, Aboulhosn J, Oechslin E, Baumgartner H, Kurdi W, Book WM, Mulder BJM, Veldtman GR. Bleeding and thrombotic risk in pregnant women with Fontan physiology. Heart 2021; 107:1390-1397. [PMID: 33234672 PMCID: PMC10367127 DOI: 10.1136/heartjnl-2020-317397] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 10/16/2020] [Accepted: 10/21/2020] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND/OBJECTIVES Pregnancy may potentiate the inherent hypercoagulability of the Fontan circulation, thereby amplifying adverse events. This study sought to evaluate thrombosis and bleeding risk in pregnant women with a Fontan. METHODS We performed a retrospective observational cohort study across 13 international centres and recorded data on thrombotic and bleeding events, antithrombotic therapies and pre-pregnancy thrombotic risk factors. RESULTS We analysed 84 women with Fontan physiology undergoing 108 pregnancies, average gestation 33±5 weeks. The most common antithrombotic therapy in pregnancy was aspirin (ASA, 47 pregnancies (43.5%)). Heparin (unfractionated (UFH) or low molecular weight (LMWH)) was prescribed in 32 pregnancies (30%) and vitamin K antagonist (VKA) in 10 pregnancies (9%). Three pregnancies were complicated by thrombotic events (2.8%). Thirty-eight pregnancies (35%) were complicated by bleeding, of which 5 (13%) were severe. Most bleeds were obstetric, occurring antepartum (45%) and postpartum (42%). The use of therapeutic heparin (OR 15.6, 95% CI 1.88 to 129, p=0.006), VKA (OR 11.7, 95% CI 1.06 to 130, p=0.032) or any combination of anticoagulation medication (OR 13.0, 95% CI 1.13 to 150, p=0.032) were significantly associated with bleeding events, while ASA (OR 5.41, 95% CI 0.73 to 40.4, p=0.067) and prophylactic heparin were not (OR 4.68, 95% CI 0.488 to 44.9, p=0.096). CONCLUSIONS Current antithrombotic strategies appear effective at attenuating thrombotic risk in pregnant women with a Fontan. However, this comes with high (>30%) bleeding risk, of which 13% are life threatening. Achieving haemostatic balance is challenging in pregnant women with a Fontan, necessitating individualised risk-adjusted counselling and therapeutic approaches that are monitored during the course of pregnancy.
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Affiliation(s)
- Andrea Girnius
- Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Dominica Zentner
- Department of Cardiology and Department of Genomic Medicine, Royal Melbourne Hospital, Melbourne, Victoria, Australia.,Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria, Australia
| | - Anne Marie Valente
- Brigham and Women's Hospital, Department of Medicine, Division of Cardiovascular Disease, Department of Cardiology Harvard Medical School, Boston, Massachusetts, USA
| | - Petronella G Pieper
- Department of Cardiology, University Medical Center Groningen, Groningen, The Netherlands
| | - Katherine E Economy
- Brigham and Women's Hospital, Department of Obstetrics and Gynecology, Division Maternal Fetal Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Magalie Ladouceur
- Cardiology, Hopital Europeen Georges Pompidou, Paris, France.,Pediatric Cardiology, Hopital Universitaire Necker-Enfants Malades, Paris, France
| | | | - Carri Warshak
- Obstetrics and Gynecology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Sara L Partington
- Division of Cardiovascular Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Division of Cardiology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Zhiqian Gao
- Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Nicholas Ollberding
- Department of Pediatrics, Cincinnati Children's Hospital Medical Centre, Cincinnati, Ohio, USA.,Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Michelle Faust
- Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Saulius Girnius
- Department of Hematology, Trihealth Cancer Institute, Cincinnati, Ohio, USA
| | | | | | - Scott Cohen
- Department of Cardiology, The Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Mary Canobbio
- School of Nursing, University of California Los Angeles, Los Angeles, California, USA
| | - Teiji Akagi
- Cardiovascular Medicine, Okayama University, Okayama, Japan
| | - Jasmine Grewal
- Cardiology, The University of British Columbia Faculty of Medicine, Vancouver, British Columbia, Canada
| | - Elisa Bradley
- Adult Congenital Heart Disease, The Ohio State University & Nationwide Children's Hospital, Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Yonathan Buber
- Department of Medicine, Division of Cardiology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Joseph Palumbo
- Haematology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | | | - Jamil Aboulhosn
- Ahmanson/UCLA ACHD Center, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Erwin Oechslin
- Toronto Congenital Cardiac Centre for Adults, Peter Munk Cardiac Centre, University Heatlh Network and University of Toronto, Toronto, Ontario, Canada.,Bitove Family Professorship of Adult Congenital Heart Disease, Toronto General Hospital, Toronto, Ontario, Canada
| | - Helmut Baumgartner
- Department of Cardiology III: Adult Congenital and Valvular Heart Disease, University Hospital Muenster, Muenster, Albert Schweitzer Campus 1, Building A1, 48149 Muenster, Germany
| | - Wesam Kurdi
- King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Wendy M Book
- Internal Medicine, Division of Cardiology, Emory University, Atlanta, Georgia, USA
| | | | - Gruschen R Veldtman
- Adult Congenital Heart Disease, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
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6
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Thromboembolic complications in adult congenital heart disease: the knowns and the unknowns. Clin Res Cardiol 2020; 110:1380-1391. [PMID: 33037501 DOI: 10.1007/s00392-020-01746-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 09/08/2020] [Indexed: 10/23/2022]
Abstract
Despite impressive improvement in long-term survival, adults with congenital heart disease (CHD) remain exposed to a significant cardiovascular morbidity over lifetime. Thromboembolic events (TE) are a major issue. Specific anatomic groups have been shown a particular high risk of TE, including cyanotic heart disease and Fontan circulation. Many intercurrent clinical factors add a substantial risk such as intracardiac medical devices, atrial arrhythmia, endocarditis, or pregnancy. Nevertheless, what is unknown exceeds what is known, especially regarding the management of this heterogenous patient population. Anticoagulation decision should always be individualized weighing balanced with the alternative risk of hemorrhagic complications. In this review, we aim to synthetize existing literature on TE in adults with CHD, discuss management issues, highlight gaps in knowledge, and intend to suggest high priority research.
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Hepatic Changes in the Fontan Circulation: Identification of Liver Dysfunction and an Attempt to Streamline Follow-up Screening. Pediatr Cardiol 2018; 39:1604-1613. [PMID: 30032312 DOI: 10.1007/s00246-018-1937-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 07/05/2018] [Indexed: 12/27/2022]
Abstract
We tried to identify structural and functional liver aberrances in a palliated Fontan population and sought to determine useful screening modalities, in order to propose a screening protocol to detect patients at risk. Twenty nine patients, median age 23.7 years (interquartile range (IQR) 20.5-27.2) and median Fontan interval 19.7 years (IQR 4.5-21.4), were prospectively studied with echocardiography, blood analysis (including serum fibrosis scores Forns, APRI and FIB4), liver imaging (ultrasound (US), Doppler), and shear wave elastography to determine liver stiffness (LS). Laboratory tests predominantly showed abnormal values for gamma-glutamyltransferase. Forns index indicated moderate fibrosis in 29% of patients and correlated with Fontan interval (p = 0.034). US liver morphology was deviant in 46% of patients, with surface nodularity in 21% and nodular hyperplasia in 29%. Doppler assessment of flow velocities was within normal ranges for most patients. LS (mean 10.4 ± 3.7 kPa) was elevated in 96% of our population and higher LS values were significantly related to longer Fontan interval (p = 0.018). Adolescent and adult Fontan patients show moderate signs of liver dysfunction. Usefulness of serum parameters and fibrosis scores in post-Fontan screening remains ambiguous. The high percentage of morphologic liver changes in palliated patients supports the use of US in periodic follow-up. LS likely overestimates fibrosis due to liver congestion, arguing for the need of validation through sequential measurements. Screening should minimally encompass US assessment in combination with selective liver fibrosis scores. The role of LS measurement in Fontan follow-up and liver screening needs to be further elucidated.
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8
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Attard C, Huang J, Monagle P, Ignjatovic V. Pathophysiology of thrombosis and anticoagulation post Fontan surgery. Thromb Res 2018; 172:204-213. [PMID: 29685556 DOI: 10.1016/j.thromres.2018.04.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 04/05/2018] [Accepted: 04/11/2018] [Indexed: 01/19/2023]
Abstract
The Fontan procedure has transformed the lives of children born with single-ventricle physiology, previously deemed inoperable. Worldwide, there are an increasing number of children with Fontan circulation, with the potential for survival into adulthood. Due to the abnormal circulation, Fontan patients have an increased risk of thromboembolic (TE) events, with up to 25% of events leading to death. Despite the importance of preventing TE events in this patient population, there is currently no clinical consensus on the optimal monitoring, thromboprophylaxis therapies, and treatment of these events. This paper reviews the available literature regarding anticoagulation in the pediatric and adult Fontan population, including the mechanisms for thrombosis and current antithrombotic therapies.
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Affiliation(s)
- Chantal Attard
- Murdoch Children's Research Institute, Haematology Research Group, Parkville, Victoria, Australia; Royal Children's Hospital, Department of Clinical Haematology, Parkville, Victoria, Australia; The University of Melbourne, Department of Paediatrics, Parkville, Victoria, Australia.
| | - Joanna Huang
- Murdoch Children's Research Institute, Haematology Research Group, Parkville, Victoria, Australia; Royal Children's Hospital, Department of Clinical Haematology, Parkville, Victoria, Australia; Monash University, School of Clinical Sciences, Clayton, Victoria, Australia
| | - Paul Monagle
- Murdoch Children's Research Institute, Haematology Research Group, Parkville, Victoria, Australia; Royal Children's Hospital, Department of Clinical Haematology, Parkville, Victoria, Australia; The University of Melbourne, Department of Paediatrics, Parkville, Victoria, Australia
| | - Vera Ignjatovic
- Murdoch Children's Research Institute, Haematology Research Group, Parkville, Victoria, Australia; Royal Children's Hospital, Department of Clinical Haematology, Parkville, Victoria, Australia
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9
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Hofferberth SC, Singh TP, Bastardi H, Blume ED, Fynn-Thompson F. Liver abnormalities and post-transplant survival in pediatric Fontan patients. Pediatr Transplant 2017; 21. [PMID: 29105236 DOI: 10.1111/petr.13061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/17/2017] [Indexed: 01/21/2023]
Abstract
The impact of liver parenchymal abnormalities on survival post-heart transplant remains unknown in pediatric Fontan patients. We assessed pediatric Fontan patients who underwent heart transplant and had documented pretransplant hepatic ultrasound (U/S) studies. Liver U/S findings were classified as normal (Group 1), mildly abnormal (Group 2, hepatomegaly/vascular congestion), or severely abnormal (Group 3, heterogeneous echotexture/nodularity). Among 30 study patients, 8 were classified as Group 1, 14 as Group 2, while 8 met Group 3 criteria. Pretransplant liver biochemistry and synthetic function were similar in all groups. Six Group 3 patients underwent liver biopsy; 4 demonstrated perisinusoidal or centrilobular fibrosis, and 2 had cirrhosis. Overall mortality was 30% (n = 9). Median follow-up was 5 years (range, 0.25-13 years). One-year survival was similar among all 3 groups (P = .37), with a trend toward higher cumulative 5-year survival in Group 1 (100%). The majority of pediatric Fontan patients who underwent heart transplant demonstrated abnormal preoperative liver ultrasound findings. Heterogeneous echotexture or nodularity detected on U/S frequently indicates underlying liver parenchymal abnormalities. The presence of severe liver abnormalities was not associated with higher early mortality post-heart transplant in pediatric Fontan patients; however, late outcomes must be further elucidated.
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Affiliation(s)
- Sophie C Hofferberth
- Department of Cardiac Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Tajinder P Singh
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Heather Bastardi
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Elizabeth D Blume
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Francis Fynn-Thompson
- Department of Cardiac Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
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10
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Intermediate term thrombotic risk in contemporary total cavo-pulmonary connection for single ventricle circulations. J Thromb Thrombolysis 2017; 44:275-280. [DOI: 10.1007/s11239-017-1530-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Abstract
PURPOSE OF REVIEW Hypoplastic left heart syndrome (HLHS) is characterized by underdevelopment of the mitral valve, left ventricle, and aorta and is ultimately palliated with a single-ventricle repair. Universally fatal in infancy prior to the advent of modern surgical techniques, the majority of HLHS patients will now reach adulthood. However, despite improvements in early survival, the HLHS population continues to face significant morbidity and early mortality. This review delineates common sources of patient morbidity and highlights areas in need of additional research for this growing segment of the adult congenital heart disease population. RECENT FINDINGS It has become increasingly clear that palliated adult single ventricle patients, like those with HLHS, face significant life-long morbidity from elevated systemic venous pressures as a consequence of the Fontan procedure. Downstream organ dysfunction secondary to elevated Fontan pressures has the potential to significantly impact long-term management decisions, including strategies of organ allocation. Because of the presence of a morphologic systemic right ventricle, HLHS patients may be at even higher risk than other adult patients with a Fontan. Because the adult HLHS population continues to grow, recognition of common sources of patient morbidity and mortality is becoming increasingly important. A coordinated effort between patients and providers is necessary to address the many remaining areas of clinical uncertainty to help ensure continued improvement in patient prognosis and quality of life.
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12
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Hilscher MB, Johnson JN, Cetta F, Driscoll DJ, Poterucha JJ, Sanchez W, Connolly HM, Kamath PS. Surveillance for liver complications after the Fontan procedure. CONGENIT HEART DIS 2017; 12:124-132. [DOI: 10.1111/chd.12446] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 11/01/2016] [Accepted: 12/26/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Moira B. Hilscher
- Department of Medicine/Division of Gastroenterology and Hepatology; Mayo Clinic; Rochester Minnesota USA
| | - Jonathan N. Johnson
- Department of Pediatrics and Adolescent Medicine/Division of Pediatric Cardiology; Mayo Clinic; Rochester Minnesota USA
- Department of Cardiovascular Diseases; Mayo Clinic; Rochester Minnesota USA
| | - Frank Cetta
- Department of Pediatrics and Adolescent Medicine/Division of Pediatric Cardiology; Mayo Clinic; Rochester Minnesota USA
- Department of Cardiovascular Diseases; Mayo Clinic; Rochester Minnesota USA
| | - David J. Driscoll
- Department of Pediatrics and Adolescent Medicine/Division of Pediatric Cardiology; Mayo Clinic; Rochester Minnesota USA
- Department of Cardiovascular Diseases; Mayo Clinic; Rochester Minnesota USA
| | - John J. Poterucha
- Department of Medicine/Division of Gastroenterology and Hepatology; Mayo Clinic; Rochester Minnesota USA
| | - William Sanchez
- Department of Medicine/Division of Gastroenterology and Hepatology; Mayo Clinic; Rochester Minnesota USA
| | - Heidi M. Connolly
- Department of Cardiovascular Diseases; Mayo Clinic; Rochester Minnesota USA
| | - Patrick S. Kamath
- Department of Medicine/Division of Gastroenterology and Hepatology; Mayo Clinic; Rochester Minnesota USA
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The Long-Term Management of Children and Adults with a Fontan Circulation: A Systematic Review and Survey of Current Practice in Australia and New Zealand. Pediatr Cardiol 2017; 38:56-69. [PMID: 27787594 DOI: 10.1007/s00246-016-1484-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 10/15/2016] [Indexed: 01/28/2023]
Abstract
Although long-term survival is now the norm, Fontan patients face significant morbidity and premature mortality. Wide variation exists in long-term Fontan management. With an aim of improving their long-term management, we conducted a systematic review to identify best available evidence and gaps in knowledge for future research focus. We also surveyed cardiologists in Australia and New Zealand managing Fontan patients, to determine the alignment of current local practice with best available evidence. A systematic review was conducted using strict search criteria (PRISMA guidelines), pertaining to long-term Fontan management. All adult congenital and paediatric cardiologists registered with The Australia and New Zealand Fontan Registry were invited to respond to an online survey. Reasonable quality evidence exists for non-inferiority of aspirin over warfarin for thromboprophylaxis in standard-risk Fontan patients. No strong evidence is currently available for the routine use of ACE inhibitors, beta blockers or pulmonary vasodilators. Little evidence exists regarding optimal arrhythmia treatment, exercise restriction/prescription, routine fenestration closure, elective Fontan conversion and screening/management of liver abnormalities. Although pregnancy is generally well tolerated, there are high rates of miscarriage and premature delivery. Thirty-nine out of 78 (50 %) cardiologists responded to the survey. Heterogeneity in response was demonstrated with regard to long-term anti-coagulation, other medication use, fenestration closure and pregnancy and contraception counselling. Substantial gaps in our knowledge remain with regard to the long-term management of Fontan patients. This is reflected in the survey of cardiologists managing these patients. We have identified a number of key areas for future research.
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14
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Wu FM, Kogon B, Earing MG, Aboulhosn JA, Broberg CS, John AS, Harmon A, Sainani NI, Hill AJ, Odze RD, Johncilla ME, Ukomadu C, Gauvreau K, Valente AM, Landzberg MJ. Liver health in adults with Fontan circulation: A multicenter cross-sectional study. J Thorac Cardiovasc Surg 2016; 153:656-664. [PMID: 27955914 DOI: 10.1016/j.jtcvs.2016.10.060] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 09/19/2016] [Accepted: 10/12/2016] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Liver disease is an important contributor to morbidity and mortality in patients after Fontan surgery. There has been no large-scale survey of liver health in this population. We sought to explore the prevalence and predictors of liver disease in a multicenter cohort of adults with Fontan physiology. METHODS Subjects were recruited from 6 adult congenital heart centers. Demographics; clinical history; and laboratory, imaging, and histopathology data were obtained. RESULTS Of 241 subjects (median age 25.8 years [11.8-59.4], median time since Fontan 20.3 years [5.4-34.5]), more than 94% of those who underwent testing (208 of 221) had at least 1 abnormal liver-related finding. All hepatic imaging (n = 54) and liver histology (n = 68) was abnormal. Subjects with abnormal laboratory values had higher sinusoidal fibrosis stage (2 vs 1, P = .007) and higher portal fibrosis stage (3 vs 1, P = .003) compared with those with all normal values. Low albumin correlated with lower sinusoidal fibrosis stage (1 vs 2; P = .02) and portal fibrosis stage (0 vs 3, P = .002); no other liver studies correlated with fibrosis. Regenerative nodules were seen on 33% of histology specimens. CONCLUSIONS Regardless of modality, findings of liver disease are common among adults with Fontan circulation, even those appearing clinically well. Cirrhosis is present in up to one-third of subjects. Correlations between hepatic fibrosis stage and clinical history or findings on noninvasive testing are few. Further research is needed to identify patients at risk for more severe liver disease and to determine the best methods for assessing liver health in this population.
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Affiliation(s)
- Fred M Wu
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Mass; Division of Cardiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass.
| | - Brian Kogon
- Division of Cardiothoracic Surgery, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Ga
| | - Michael G Earing
- Department of Pediatric Cardiology, Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, Wis
| | - Jamil A Aboulhosn
- Ahmanson/UCLA Adult Congenital Heart Disease Center, Los Angeles, Calif
| | - Craig S Broberg
- Department of Cardiology, Oregon Health and Science University, Portland, Ore
| | - Anitha S John
- Division of Cardiology, Children's National Medical Center, George Washington University School of Medicine, Washington, DC
| | - Amy Harmon
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Mass
| | - Nisha I Sainani
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Andrew J Hill
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Robert D Odze
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Melanie E Johncilla
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Chinweike Ukomadu
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Kimberlee Gauvreau
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Mass
| | - Anne Marie Valente
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Mass; Division of Cardiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Michael J Landzberg
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Mass; Division of Cardiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
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15
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Bhatt AB, Foster E, Kuehl K, Alpert J, Brabeck S, Crumb S, Davidson WR, Earing MG, Ghoshhajra BB, Karamlou T, Mital S, Ting J, Tseng ZH. Congenital Heart Disease in the Older Adult. Circulation 2015; 131:1884-931. [DOI: 10.1161/cir.0000000000000204] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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16
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Ohuchi H, Yasuda K, Miyazaki A, Ono S, Hayama Y, Negishi J, Noritake K, Mizuno M, Yamada O. Prevalence and predictors of haemostatic complications in 412 Fontan patients: their relation to anticoagulation and haemodynamics. Eur J Cardiothorac Surg 2014; 47:511-9. [PMID: 24699205 DOI: 10.1093/ejcts/ezu145] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
OBJECTIVES Our aim in the present study was to determine the prevalence of haemostatic events in our Fontan patients, to identify predictive factors and to determine their association with haemodynamics and anticoagulant therapy. METHODS We retrospectively evaluated 424 Fontan patients and examined correlations between postoperative haemodynamics and anticoagulant regimens with haemostatic events. RESULTS After exclusion of 12 patients with a mechanical valve at the time of Fontan operation, our 412 patients were sub-divided into 21 groups based on the therapeutic duration of warfarin and antiplatelet agent therapy. During the early 5- to 10-year postoperative period, patients receiving warfarin showed higher central venous pressure and lower arterial oxygen saturation (Sat) (P < 0.05-0.001). During a mean follow-up of 11.2 years, 29 (7.0%) haemostatic events occurred. With regard to haemorrhagic events, haemoptysis was most common (n = 13, 45%), followed by cerebral bleeds in 3 (10%). Of thrombo-embolic events, thrombosis in the Fontan pathway was the most common (n = 7, 24%), followed by cerebral infarction in 3. Early haemorrhagic events were associated with late Fontan operation and use of preoperative renin-angiotensin system blockers, while late events were related to heterotaxy syndrome, male gender and low Sat (P < 0.05-0.01). A low Sat was the only predictor of early postoperative thrombo-embolic events (P = 0.0192). Among the three subgroup analyses of fixed anticoagulant regimens, the most frequent haemorrhagic events were associated with long-term use of warfarin (P = 0.0033). None of the anticoagulant regimens that included warfarin and/or antiplatelet agents were independently associated with haemostatic events throughout the follow-up. CONCLUSIONS Anticoagulant regimens in Fontan patients varied widely with a significant trend for warfarin use in patients with impaired haemodynamics. Low arterial oxygenation may predict haemostatic events. The relatively high prevalence of haemorrhagic complications indicates the need for individualized anticoagulant administration throughout the follow-up.
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Affiliation(s)
- Hideo Ohuchi
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Kenji Yasuda
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Aya Miyazaki
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Shin Ono
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Yosuke Hayama
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Jun Negishi
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Kanae Noritake
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Masanori Mizuno
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Osamu Yamada
- Department of Pediatric Cardiology and Adult Congenital Heart Disease, National Cerebral and Cardiovascular Center, Osaka, Japan
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17
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Tomkiewicz-Pajak L, Hoffman P, Trojnarska O, Lipczyńska M, Podolec P, Undas A. Abnormalities in blood coagulation, fibrinolysis, and platelet activation in adult patients after the Fontan procedure. J Thorac Cardiovasc Surg 2014; 147:1284-90. [DOI: 10.1016/j.jtcvs.2013.06.011] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 05/23/2013] [Accepted: 06/14/2013] [Indexed: 01/19/2023]
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18
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Firdouse M, Agarwal A, Chan AK, Mondal T. Thrombosis and Thromboembolic Complications in Fontan Patients. Clin Appl Thromb Hemost 2014; 20:484-92. [DOI: 10.1177/1076029613520464] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Hemodynamic fluctuations and thromboembolic complications are significant areas of concern during the postoperative management of patients with univentricular hearts. The objective of this study is to review the incidence and risk factors associated with thrombosis and thromboembolic complications following total cavopulmonary anastomosis, the third stage of the palliative surgical procedure. A literature search of published evidence was conducted on OvidSP MEDLINE(R) and Embase followed by paired title, abstract, and full-text screening based on specific inclusion criteria. High risks of thromboembolic outcomes were identified across studies, with variable incidences between 3% and 20%, high mortality rates up to 38%, and an inverse relationship with prophylaxis treatment administration. Several risk factors for thrombotic complications, including chronic systemic venous hypertension, protein-losing enteropathy, passive blood flow, atrial arrhythmias, conduit stenosis, prosthetic material use, coagulation factor abnormalities, and several patient characteristics were identified. Based on these findings, a prophylactic anticoagulation algorithm has been proposed.
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Affiliation(s)
| | - Arnav Agarwal
- Faculty of Health Sciences, McMaster University, Hamilton, Canada
| | - Anthony K. Chan
- Department of Pediatrics, McMaster Children’s Hospital, McMaster University, Hamilton, Canada
| | - Tapas Mondal
- Department of Pediatrics, McMaster Children’s Hospital, McMaster University, Hamilton, Canada
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19
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Yamamura K, Joo K, Ohga S, Nagata H, Ikeda K, Muneuchi J, Watanabe M, Hara T. Thrombocytosis in asplenia syndrome with congenital heart disease: A previously unrecognized risk factor for thromboembolism. Int J Cardiol 2013; 167:2259-63. [DOI: 10.1016/j.ijcard.2012.06.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2012] [Revised: 05/15/2012] [Accepted: 06/07/2012] [Indexed: 01/19/2023]
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20
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Cohen SB, Ginde S, Bartz PJ, Earing MG. Extracardiac complications in adults with congenital heart disease. CONGENIT HEART DIS 2013; 8:370-80. [PMID: 23663434 DOI: 10.1111/chd.12080] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/15/2013] [Indexed: 11/27/2022]
Abstract
With the increasing number of adults living with repaired, or unrepaired, congenital heart disease, there is a growing incidence of extracardiac comorbidities. These comorbidities can affect various organ systems in complex ways, and may have a significant impact on a patient's quality of life and survival. Many of these potential complications may go undiagnosed until there is already a significant bearing on the patient's life. Therefore, it is important for physicians who care for the adult congenital patient to be mindful of these potential extracardiac complications, and actively assess for these complications in their adult congenital practice. Continued research to identify modifiable risk factors is needed so that both preventative and therapeutic management options for these extracardiac complications may be developed.
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Affiliation(s)
- Scott B Cohen
- The Wisconsin Adult Congenital Heart Disease Program (WAtCH), Medical College of Wisconsin, Milwaukee, Wis, USA
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21
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Kaulitz R, Haber P, Sturm E, Schäfer J, Hofbeck M. Serial evaluation of hepatic function profile after Fontan operation. Herz 2013; 39:98-104. [DOI: 10.1007/s00059-013-3811-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 01/14/2013] [Accepted: 03/15/2013] [Indexed: 11/28/2022]
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22
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Ginde S, Hohenwalter MD, Foley WD, Sowinski J, Bartz PJ, Venkatapuram S, Weinberg C, Tweddell JS, Earing MG. Noninvasive Assessment of Liver Fibrosis in Adult Patients Following the Fontan Procedure. CONGENIT HEART DIS 2012; 7:235-42. [DOI: 10.1111/j.1747-0803.2012.00632.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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23
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Wu FM, Ukomadu C, Odze RD, Valente AM, Mayer Jr. JE, Earing MG. Liver Disease in the Patient with Fontan Circulation. CONGENIT HEART DIS 2011; 6:190-201. [DOI: 10.1111/j.1747-0803.2011.00504.x] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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24
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Thromboelastography of patients after fontan compared with healthy children. Pediatr Cardiol 2009; 30:771-6. [PMID: 19357907 PMCID: PMC5310944 DOI: 10.1007/s00246-009-9434-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Revised: 02/03/2009] [Accepted: 03/11/2009] [Indexed: 01/08/2023]
Abstract
Patients who have undergone a Fontan procedure face an increased risk for thromboembolic complications. This study aimed to evaluate whether thromboelastography, a global whole-blood assay of coagulation, can be used to detect hypercoagulability in pediatric Fontan patients compared with healthy children. This prospective, cross-sectional study investigated 25 Fontan patients and 51 healthy children in three age groups: 1-5 years, 6-10 years, and 11-16 years. Kaolin-activated thromboelastography was performed on citrated samples. No statistically significant differences in thromboelastography parameters were found among the different age groups of the 51 healthy children. None of the 25 Fontan patients demonstrated evidence of hypercoagulability on thromboelastography (95% confidence interval, 0-7%), as defined by two standard deviations above or below the normal mean. The findings suggest that the percentage of Fontan patients demonstrating hypercoagulability on thromboelastography is substantially lower than the reported incidence of thromboembolic complications. Whether thromboelastography could be helpful in predicting patients at increased risk for thromboembolic complications or not still is not known. Further studies comparing the thromboelastography of Fontan patients with the thromboembolic complications of those without Fontan are needed to delineate these issues.
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25
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Camposilvan S, Milanesi O, Stellin G, Pettenazzo A, Zancan L, D'Antiga L. Liver and Cardiac Function in the Long Term After Fontan Operation. Ann Thorac Surg 2008; 86:177-82. [DOI: 10.1016/j.athoracsur.2008.03.077] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2008] [Revised: 03/27/2008] [Accepted: 03/31/2008] [Indexed: 01/19/2023]
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26
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Bocsi J, Lenz D, Sauer U, Wild L, Hess J, Schranz D, Hambsch J, Schneider P, Tárnok A. Inflammation and Immune Suppression following Protein Losing Enteropathy after Fontan Surgery Detected by Cytomics. Transfus Med Hemother 2007. [DOI: 10.1159/000101396] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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27
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Tárnok A, Bocsi J, Lenz D, Janousek J. Protein Losing Enteropathy after Fontan Surgery – Clinical and Diagnostical Aspects. Transfus Med Hemother 2007. [DOI: 10.1159/000101373] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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28
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Cheung EWY, Chay GW, Ma ESK, Cheung YF. Systemic oxygen saturation and coagulation factor abnormalities before and after the fontan procedure. Am J Cardiol 2005; 96:1571-5. [PMID: 16310443 DOI: 10.1016/j.amjcard.2005.07.074] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2005] [Revised: 07/06/2005] [Accepted: 07/06/2005] [Indexed: 01/19/2023]
Abstract
Coagulation factor abnormalities are believed to predispose to increased risk for thromboembolism after the Fontan procedure. Recent data, however, suggest that coagulation abnormalities may precede the operation. This study determined coagulation factor abnormalities in patients with single-ventricle congenital heart defects before the Fontan procedure and compared the findings with age-matched post-Fontan patients and control subjects. Liver function, coagulation factor levels, and pulse oximetry readings were determined in 11 pre-Fontan patients aged 9.3+/-5.6 years. The results were compared with those of 11 age-matched post-Fontan patients, at 9.1+/-2.4 years after the Fontan procedure, and 11 age-matched controls by simple analysis of variance and post hoc Tukey's test. Liver function was normal in patients before and after surgery apart from mildly elevated bilirubin levels in post-Fontan patients (p=0.027). When compared with controls, pre-Fontan patients had significantly lower levels of protein C; protein S; antithrombin III; and factors II, V, VII, and X and longer prothrombin times (all with p<0.05). When compared with post-Fontan patients, pre-Fontan patients had similarly lower levels of free protein S (p<0.001), protein C (p=0.06), and antithrombin III (p=0.001). Systemic oxygen saturation correlated positively with the levels of anticoagulants (protein C, protein S, antithrombin III) and procoagulants (factors II, V, VII, and X) (all with p<0.05, r=0.33 to 0.61). In conclusion, the findings suggest that coagulation factor abnormalities precede the Fontan procedure and tend to normalize after the operation, relating perhaps to improved systemic oxygenation.
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Affiliation(s)
- Eddie W Y Cheung
- Division of Paediatric Cardiology, Department of Paediatrics and Adolescent Medicine, Grantham Hospital, Hong Kong, China
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