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Wong A, Cortez D. Vectorcardiography signs of a failing Fontan: Heart rate, PR interval, RtQRSvm, QRSvm and SPQRS-T angle as noninvasive markers of late Fontan complications and mortality. J Electrocardiol 2024; 85:78-86. [PMID: 38876821 DOI: 10.1016/j.jelectrocard.2024.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/13/2024] [Accepted: 04/25/2024] [Indexed: 06/16/2024]
Abstract
BACKGROUND Limited data exists on interpreting vectorcardiography (VCG) parameters in the Fontan population. OBJECTIVE The purpose of this study was to demonstrate the associations between ECG/VCG parameters and Fontan failure (FF). METHODS/RESULTS 107 patients with a Fontan operation after 1990 and without significant ventricular pacing were included. FF and Fontan survival (FS) groups were compared. The average follow-up after Fontan operation was 11.8 years ±7.1 years. 14 patients had FF (13.1%) which was defined as having protein-losing-enteropathy (1.9%), plastic bronchitis (2.8%), Fontan takedown (1.9%), heart transplant (5.6%), NYHA class III-IV (2.8%) or death (0.9%). A 12‑lead ECG at last follow up or prior to FF was assessed for heart rate, PR interval, QRS duration, Qtc and left/right sided precordial measures (P-wave, QRS and T-wave vector magnitudes, spatial P-R and QRS-T angles). Transthoracic echocardiogram evaluated atrioventricular valve regurgitation and ventricular dysfunction at FF or last follow up. A cox multivariate regression analysis adjusted for LV dominance, ventricular dysfunction, HR, PR, QTc, Pvm, QRSvm, SPQRST-angle, RtPvm, RtQRSvm and RtTvm. Ventricular dysfunction, increased heart rate and prolonged PR interval were significantly associated to FF at the multivariate analysis. ROC analysis and Kaplan-meier analysis revealed an increased total mortality associated with a heart rate > 93 bpm, PR interval > 155 mv, QRSvm >1.91 mV, RtQRSvm >1.8 mV and SPQRST angle >92.3 mV with p values <0.001 to 0.018. CONCLUSION We demonstrate the importance of ECG/VCG monitoring in the Fontan population and suggest specific indicators of late complications and mortality.
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Affiliation(s)
- Ashley Wong
- Department of Pediatrics, University of California at Davis Health, Sacramento, CA, United States of America
| | - Daniel Cortez
- Department of Pediatrics, University of California at Davis Health, Sacramento, CA, United States of America; Division of Pediatric Cardiology, University of California at Davis Health, Sacramento, CA, United States of America.
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2
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Gunsaulus M, Wang L, Haack L, Christopher A, Feingold B, Squires J, Horslen S, Hoskoppal A, Rose-Felker K, West S, Trucco S, Squires J, Olivieri L, Kreutzer J, Goldstein B, Alsaied T. Cardiac MRI-Derived Inferior Vena Cava Cross-Sectional Area Correlates with Measures of Fontan-Associated Liver Disease. Pediatr Cardiol 2024; 45:909-920. [PMID: 36454265 DOI: 10.1007/s00246-022-03054-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 11/15/2022] [Indexed: 12/05/2022]
Abstract
There is currently no clear consensus on screening techniques to evaluate the presence or severity of Fontan-associated liver disease (FALD). Cardiac MRI (CMR) is used routinely for post-Fontan surveillance, but CMR-derived measures that relate to the severity of FALD are not yet defined. This was a cross-sectional single-center study of post-Fontan patients who underwent a CMR. CMR exams were re-analyzed by a single pediatric cardiologist. Surrogates of FALD included Gamma-Glutamyl Transferase (GGT), Fibrosis-4 laboratory score (FIB-4), and imaging findings. Findings consistent with cirrhosis on liver ultrasound included increased liver echogenicity and/or nodularity. Statistical analyses were performed to investigate potential relationships between CMR parameters and markers of FALD. Sixty-one patients were included. A larger inferior vena cava cross-sectional area (IVC-CSA) indexed to height was significantly associated with a higher FIB-4 score (Spearman's ρ = 0.28, p = 0.04), a higher GGT level (Spearman's ρ = 0.40, p = 0.02), and findings consistent with cirrhosis on liver ultrasound (OR 1.17, 95% CI: (1.01, 1.35), p = 0.04). None of the other CMR parameters were associated with markers of FALD. A larger indexed IVC-CSA was associated with higher systemic ventricle end-diastolic pressure (EDP) on cardiac catheterization (Spearman's ρ = 0.39, p = 0.018) as well as older age (Spearman's ρ = 0.46, p = < 0.001). Indexed IVC-CSA was the only CMR parameter that was associated with markers of FALD. This measure has the potential to serve as an additional non-invasive tool to improve screening strategies for FALD.
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Affiliation(s)
- Megan Gunsaulus
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA.
| | - Li Wang
- Epidemiology Data Center, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA, USA
| | - Lindsey Haack
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA
| | - Adam Christopher
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA
| | - Brian Feingold
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA
| | - James Squires
- Pediatric Gastroenterology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Simon Horslen
- Pediatric Gastroenterology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Arvind Hoskoppal
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA
| | - Kirsten Rose-Felker
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA
| | - Shawn West
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA
| | - Sara Trucco
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA
| | - Judy Squires
- Pediatric Radiology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Laura Olivieri
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA
| | - Jacqueline Kreutzer
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA
| | - Bryan Goldstein
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA
| | - Tarek Alsaied
- Pediatric Cardiology, UPMC Children's Hospital of Pittsburgh, 4401 Penn Avenue, 5th Floor Faculty Pavilion, Pittsburgh, PA, 15224, USA
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Abell BR, Eagleson K, Auld B, Bora S, Justo R, Parsonage W, Sharma P, Kularatna S, McPhail SM. Implementing neurodevelopmental follow-up care for children with congenital heart disease: A scoping review with evidence mapping. Dev Med Child Neurol 2024; 66:161-175. [PMID: 37421232 PMCID: PMC10953404 DOI: 10.1111/dmcn.15698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 05/04/2023] [Accepted: 06/07/2023] [Indexed: 07/10/2023]
Abstract
AIM To identify and map evidence describing components of neurodevelopmental follow-up care for children with congenital heart disease (CHD). METHOD This was a scoping review of studies reporting components of neurodevelopmental follow-up programmes/pathways for children with CHD. Eligible publications were identified through database searches, citation tracking, and expert recommendations. Two independent reviewers screened studies and extracted data. An evidence matrix was developed to visualize common characteristics of care pathways. Qualitative content analysis identified implementation barriers and enablers. RESULTS The review included 33 studies. Twenty-one described individual care pathways across the USA (n = 14), Canada (n = 4), Australia (n = 2), and France (n = 1). The remainder reported surveys of clinical practice across multiple geographical regions. While heterogeneity in care existed across studies, common attributes included enrolment of children at high-risk of neurodevelopmental delay; centralized clinics in children's hospitals; referral before discharge; periodic follow-up at fixed ages; standardized developmental assessment; and involvement of multidisciplinary teams. Implementation barriers included service cost/resourcing, patient burden, and lack of knowledge/awareness. Multi-level stakeholder engagement and integration with other services were key drivers of success. INTERPRETATION Defining components of effective neurodevelopmental follow-up programmes and care pathways, along with enhancing and expanding guideline-based care across regions and into new contexts, should continue to be priorities. WHAT THIS PAPER ADDS Twenty-two different neurodevelopmental follow-up care pathways/programmes were published, originating from four countries. Twelve additional publications described broad practices for neurodevelopmental follow-up across regions Common attributes across eligibility, service structure, assessment processes, and care providers were noted. Studies reported programme acceptability, uptake, cost, and effectiveness. Implementation barriers included service cost/resourcing, patient burden, and lack of knowledge/awareness.
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Affiliation(s)
- Bridget R. Abell
- Australian Centre for Health Services Innovation and Centre for Healthcare Transformation, School of Public Health and Social Work, Faculty of HealthQueensland University of TechnologyBrisbaneQLDAustralia
| | - Karen Eagleson
- Queensland Paediatric Cardiac ServiceQueensland Children's HospitalBrisbaneQLDAustralia
- Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
| | - Benjamin Auld
- Queensland Paediatric Cardiac ServiceQueensland Children's HospitalBrisbaneQLDAustralia
| | - Samudragupta Bora
- Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
- University Hospitals Rainbow Babies & Children's HospitalCase Western Reserve University School of MedicineClevelandOHUSA
| | - Robert Justo
- Queensland Paediatric Cardiac ServiceQueensland Children's HospitalBrisbaneQLDAustralia
- Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
| | - William Parsonage
- Australian Centre for Health Services Innovation and Centre for Healthcare Transformation, School of Public Health and Social Work, Faculty of HealthQueensland University of TechnologyBrisbaneQLDAustralia
- Royal Brisbane and Women's HospitalMetro North HealthBrisbaneQLDAustralia
| | - Pakhi Sharma
- Australian Centre for Health Services Innovation and Centre for Healthcare Transformation, School of Public Health and Social Work, Faculty of HealthQueensland University of TechnologyBrisbaneQLDAustralia
| | - Sanjeewa Kularatna
- Australian Centre for Health Services Innovation and Centre for Healthcare Transformation, School of Public Health and Social Work, Faculty of HealthQueensland University of TechnologyBrisbaneQLDAustralia
| | - Steven M. McPhail
- Australian Centre for Health Services Innovation and Centre for Healthcare Transformation, School of Public Health and Social Work, Faculty of HealthQueensland University of TechnologyBrisbaneQLDAustralia
- Digital Health and Informatics Directorate, Metro South HealthBrisbaneQLDAustralia
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4
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Téllez L, Payancé A, Tjwa E, Del Cerro MJ, Idorn L, Ovroutski S, De Bruyne R, Verkade HJ, De Rita F, de Lange C, Angelini A, Paradis V, Rautou PE, García-Pagán JC. EASL-ERN position paper on liver involvement in patients with Fontan-type circulation. J Hepatol 2023; 79:1270-1301. [PMID: 37863545 DOI: 10.1016/j.jhep.2023.07.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 07/06/2023] [Indexed: 10/22/2023]
Abstract
Fontan-type surgery is the final step in the sequential palliative surgical treatment of infants born with a univentricular heart. The resulting long-term haemodynamic changes promote liver damage, leading to Fontan-associated liver disease (FALD), in virtually all patients with Fontan circulation. Owing to the lack of a uniform definition of FALD and the competitive risk of other complications developed by Fontan patients, the impact of FALD on the prognosis of these patients is currently debatable. However, based on the increasing number of adult Fontan patients and recent research interest, the European Association for The Study of the Liver and the European Reference Network on Rare Liver Diseases thought a position paper timely. The aims of the current paper are: (1) to provide a clear definition and description of FALD, including clinical, analytical, radiological, haemodynamic, and histological features; (2) to facilitate guidance for staging the liver disease; and (3) to provide evidence- and experience-based recommendations for the management of different clinical scenarios.
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Affiliation(s)
- Luis Téllez
- Gastroenterology and Hepatology Department, Hospital Universitario Ramón y Cajal, Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), CIBEREHD (Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas), University of Alcalá, Madrid, Spain
| | - Audrey Payancé
- DHU Unity, Pôle des Maladies de l'Appareil Digestif, Service d'Hépatologie, Hôpital Beaujon, AP-HP, Clichy, France; Université Denis Diderot-Paris 7, Sorbonne Paris Cité, Paris, France
| | - Eric Tjwa
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - María Jesús Del Cerro
- Pediatric Cardiology Department, Hospital Universitario Ramón y Cajal, Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), University of Alcalá, Madrid, Spain
| | - Lars Idorn
- Department of Pediatrics, Section of Pediatric Cardiology, Rigshospitalet, Copenhagen, Denmark
| | - Stanislav Ovroutski
- Department of Congenital Heart Disease/Pediatric Cardiology, Deutsches Herzzentrum Berlin, Berlin, Germany
| | - Ruth De Bruyne
- Department of Pediatric Gastroenterology, Hepatology and Nutrition, Ghent University Hospital, Belgium
| | - Henkjan J Verkade
- Department of Pediatrics, Beatrix Children's Hospital/University Medical Center Groningen, The Netherlands
| | - Fabrizio De Rita
- Adult Congenital and Paediatric Heart Unit, Freeman Hospital, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Charlotte de Lange
- Department of Pediatric Radiology, Queen Silvia Childrens' Hospital, Sahlgrenska University Hospital, Behandlingsvagen 7, 41650 Göteborg, Sweden
| | - Annalisa Angelini
- Pathology of Cardiac Transplantation and Regenerative Medicine Unit, Department of Cardiac, Thoracic and Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Valérie Paradis
- Centre de recherche sur l'inflammation, INSERM1149, Université Paris Cité, Paris, France; Pathology Department, Beaujon Hospital, APHP.Nord, Clichy, France
| | - Pierre Emmanuel Rautou
- AP-HP, Service d'Hépatologie, Hôpital Beaujon, DMU DIGEST, Centre de Référence des Maladies Vasculaires du Foie, FILFOIE, Clichy, France; Université Paris-Cité, Inserm, Centre de recherche sur l'inflammation, UMR 1149, Paris, France
| | - Juan Carlos García-Pagán
- Barcelona Hepatic Hemodynamic Laboratory, Liver Unit, Hospital Clínic, Institut de Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Departament de Medicina i Ciències de la Salut, University of Barcelona, Barcelona, Spain; CIBEREHD (Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas), Health Care Provider of the European Reference Network on Rare Liver Disorders (ERN-Liver), Spain.
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5
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Abstract
IMPORTANCE Single ventricle CHD affects about 5 out of 100,000 newborns, resulting in complex anatomy often requiring multiple, staged palliative surgeries. Paediatricians are an essential part of the team that cares for children with single ventricle CHD. These patients often encounter their paediatrician first when a complication arises, so it is critical to ensure the paediatrician is knowledgeable of these issues to provide optimal care. OBSERVATIONS We reviewed the subtypes of single ventricle heart disease and the various palliative surgeries these patients undergo. We then searched the literature to detail the general paediatrician's approach to single ventricle patients at different stages of surgical palliation. CONCLUSIONS AND RELEVANCE Single ventricle patients undergo staged palliation that drastically changes physiology after each intervention. Coordinated care between their paediatrician and cardiologist is requisite to provide excellent care. This review highlights what to expect when these patients are seen by their paediatrician for either well child visits or additional visits for parental or patient concern.
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6
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Sadat-Hossieny S, Karamlou T, Marino BS, Gossett JG, Schumacher K, Patel A, Worley S, Alsaied T, Amdani S. Contemporary Provider Management Practices and Attitudes Toward Referral for Advanced Heart Failure Therapies in Fontan Patients Across North America. J Card Fail 2021; 28:576-587. [PMID: 34991953 DOI: 10.1016/j.cardfail.2021.10.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 10/27/2021] [Accepted: 10/27/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND To date, no reports have described clinicians' management practices for patients with Fontan circulatory failure or their understanding of risk factors for mortality and transplant outcomes in these patients. METHODS AND RESULTS A cross-sectional survey of caregivers across North America was conducted from February to September 2020. Responses were compared by primary specialty (heart failure/transplant vs non-heart failure/transplant), years of experience (early, mid, and late career), and Fontan center volume (low, medium, and high). Of 400 responses, the majority were from general cardiologists (111, 28%) followed by heart failure/transplant specialists (93, 23%). Although most agreed that patients with Fontan physiology will have signs/symptoms of heart failure (369 [93%]) and eventuate in heart transplant (286 [72%]), many disagreed (180 [45%]) that routine evaluation by a transplant cardiologist is needed without symptoms. Transplant providers were more likely than non-transplant providers to suggest referral for manifestations of Fontan circulatory failure such as protein-losing enteropathy, plastic bronchitis, liver fibrosis/cirrhosis, and worsening valve regurgitation. Non-transplant providers were more likely to suggest that protein-losing enteropathy, plastic bronchitis, and Fontan-associated liver disease lead to inferior outcomes after transplantation. Early career and transplant providers more favorably viewed ventricular assist device use for Fontan patients failing traditional heart failure therapy (P < .05 for all). CONCLUSIONS There is significant variation in the management of Fontan patients, including heterogeneous timing of referral of such patients to the heart failure/transplant team, which may have implications for future outcomes.
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Affiliation(s)
- Sara Sadat-Hossieny
- Department of Pediatric Cardiology, Cleveland Clinic Children's, Cleveland, Ohio
| | - Tara Karamlou
- Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, Ohio
| | - Bradley S Marino
- Department of Pediatric Cardiology, Cleveland Clinic Children's, Cleveland, Ohio
| | - Jeffrey G Gossett
- Cohen Children's Medical Center, Northwell Health, New Hyde Park, New York
| | - Kurt Schumacher
- Congenital Heart Center, C.S. Mott Children's Hospital, University of Michigan, Ann Arbor, Michigan
| | - Angira Patel
- Division of Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Sarah Worley
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio
| | - Tarek Alsaied
- University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Shahnawaz Amdani
- Department of Pediatric Cardiology, Cleveland Clinic Children's, Cleveland, Ohio.
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7
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Non-invasive biomarkers of Fontan-associated liver disease. JHEP Rep 2021; 3:100362. [PMID: 34693238 PMCID: PMC8517550 DOI: 10.1016/j.jhepr.2021.100362] [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: 04/30/2021] [Revised: 08/12/2021] [Accepted: 09/05/2021] [Indexed: 02/07/2023] Open
Abstract
Background & Aims Fontan-associated liver disease (FALD) has emerged as an important morbidity following surgical palliation of single ventricle congenital heart disease. In this study, non-invasive biomarkers that may be associated with severity of FALD were explored. Methods A retrospective cohort of paediatric patients post-Fontan who underwent liver biopsy at a high volume at a paediatric congenital heart disease centre was reviewed. Results Among 106 patients, 66% were male and 69% were Hispanic. The mean age was 14.4 ± 3.5 years, and biopsy was performed 10.8 ± 3.6 years post-Fontan. The mean BMI was 20.8 ± 5 kg/m2, with 27.4% meeting obesity criteria. Bridging fibrosis was observed in 35% of patients, and 10.4% of all patients had superimposed steatosis. Bridging fibrosis was associated with lower platelet counts (168.3 ± 58.4 vs. 203.9 ± 65.8 K/μl for congestive hepatic fibrosis score [CHFS] 0–2b, p = 0.009), higher bilirubin (1.7 ± 2.2 vs. 0.9 ± 0.7 mg/dl, p = 0.0090), higher aspartate aminotransferase-to-platelet ratio index [APRI] and fibrosis-4 [FIB-4] scores (APRI: 0.5 ± 0.3 vs. 0.4 ± 0.1, p <0.01 [AUC: 0.69] and FIB-4: 0.6 ± 0.4 vs. 0.4 ± 0.2, p <0.01 [AUC: 0.69]), and worse overall survival (median 2 years follow-up post-biopsy, p = 0.027). Regression modelling of temporal changes in platelet counts before and after biopsy correlated with fibrosis severity (p = 0.005). Conclusions In this large, relatively homogeneous adolescent population in terms of age, ethnicity, and Fontan duration, bridging fibrosis was observed in 35% of patients within the first decade post-Fontan. Bridging fibrosis was associated with worse survival. Changes in platelet counts, even years before biopsy, and APRI/FIB-4 scores had modest discriminatory power in identifying patients with advanced fibrosis. Steatosis may represent an additional risk factor for disease progression in obese patients. Further prospective studies are necessary to develop strategies to screen for FALD in the adolescent population. Lay summary In this study, the prevalence of Fontan-associated liver disease (FALD) in the young adult population and clinical variables that may be predictive of fibrosis severity or adverse outcomes were explored. Several lab-based, non-invasive markers of bridging fibrosis in FALD were identified, suggesting that these values may be followed as a prognostic biomarker for FALD progression in the adolescent population. FALD is universal within 10 years post-Fontan, with 35% of patients having bridging fibrosis. Of our adolescent patient population, 10% had concomitant hepatic steatosis, which was associated with obesity. Regression modelling demonstrates that temporal changes in platelet counts correlate with severity of fibrosis in FALD. AST-to-platelet ratio index and FIB-4 scores correlate with bridging fibrosis with a high specificity. Bridging fibrosis in FALD is associated with worse survival.
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Key Words
- ALP, alkaline phosphatase
- ALT, alanine aminotransferase
- APRI, AST-to-platelet ratio index
- AST, aspartate aminotransferase
- BMI, body mass index
- BNP, brain natriuretic peptide
- BUN, blood urea nitrogen
- CBC, complete blood count
- CHFS, congestive hepatic fibrosis score
- CHLT, combined heart–liver transplantation
- CVP, central venous pressure
- Congenital heart disease
- Congestive hepatopathy
- ECMO, extracorporeal membrane oxygenation
- FALD, Fontan-associated liver disease
- FIB-4, fibrosis-4
- GFR, glomerular filtration rate
- GGT, gamma-glutamyl transferase
- INR, international normalised ratio
- IQR, interquartile range
- LVAD, left ventricular assist device
- MELD, model of end-stage liver disease
- MELD-Na, MELD-sodium
- MELD-XI, MELD without INR
- NAFLD, non-alcoholic fatty liver disease
- PELD, paediatric end-stage liver disease
- PT, prothrombin time
- PTT, partial thromboplastin time
- TTE, transthoracic echocardiograms
- Univentricular heart disease
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8
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Saley TP, Patel ND, Bar-Cohen Y, Silka MJ, Hill AC. Utility of Surveillance Ambulatory Rhythm Monitoring in the Pediatric Fontan Population. Pediatr Cardiol 2021; 42:1442-1448. [PMID: 33963437 DOI: 10.1007/s00246-021-02630-0] [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: 12/04/2020] [Accepted: 04/28/2021] [Indexed: 11/29/2022]
Abstract
Our institution established a Fontan surveillance plan, which included ambulatory rhythm monitoring (ARM) at 6, 10, 13, 16 and 19 years old, for early detection of Fontan-associated complications. We conducted a retrospective chart review of Fontan patients followed at our institution 2014-2018 to determine the utility of surveillance ARMs. 139 ARMs from 83 patients were included. ARMs with supraventricular tachycardia, sinus node dysfunction, accelerated junctional rhythm, > 1st degree atrioventricular block, and complex ventricular ectopy were classified as positive for arrhythmia. Arrhythmias were occult if detected on surveillance ARM. The ARM indication was surveillance in 78 (56%) and clinically indicated in 61 (44%). 52 (37%) ARMs in 27 (33%) patients had an arrhythmia. There was no difference in the age of patients with and without arrhythmias [median 10.9 (6.5, 17.1 years) vs. 8.8 (7, 13.6 years), p = 0.5]. Clinically indicated ARMs more frequently demonstrated arrhythmias than surveillance ARMs (52% vs. 26%, p < 0.01). Compared to patients without arrhythmias, those with arrhythmias were more likely to be female (48% vs. 23%, p = 0.02), have a single right ventricle (46% vs. 19%, p < 0.01) and longer QRS duration on ECG [100 (91, 116 ms) vs. 94 (84, 104 ms), p = 0.046]. Patients with occult arrhythmias were less likely to have moderate to severe atrioventricular valvar regurgitation (0% vs. 46%; p = 0.04) or ventricular dysfunction (0% vs. 46%; p = 0.04) than those with clinical arrhythmia(s). Arrhythmia findings resulted in change in management for 16/52 (31%) ARMs. The findings suggest the frequent presence of arrhythmias on periodic ARMs in patients following the Fontan procedure regardless of symptomatic status.
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Affiliation(s)
- Taylor P Saley
- Division of Cardiology, Children's Hospital Los Angeles, 4650 Sunset Blvd, MS #34, Los Angeles, CA, 90049, USA.,Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Neil D Patel
- Division of Cardiology, Children's Hospital Los Angeles, 4650 Sunset Blvd, MS #34, Los Angeles, CA, 90049, USA.,Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Yaniv Bar-Cohen
- Division of Cardiology, Children's Hospital Los Angeles, 4650 Sunset Blvd, MS #34, Los Angeles, CA, 90049, USA.,Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Michael J Silka
- Division of Cardiology, Children's Hospital Los Angeles, 4650 Sunset Blvd, MS #34, Los Angeles, CA, 90049, USA.,Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Allison C Hill
- Division of Cardiology, Children's Hospital Los Angeles, 4650 Sunset Blvd, MS #34, Los Angeles, CA, 90049, USA. .,Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
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9
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Abdominal Imaging of Children and Young Adults With Fontan Circulation: Pathophysiology and Surveillance. AJR Am J Roentgenol 2021; 217:207-217. [PMID: 33909464 DOI: 10.2214/ajr.20.23404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE. The Fontan procedure has significantly improved the survival in children with a functional single ventricle, but it is associated with chronically elevated systemic venous pressure that leads to multisystemic complications. Imaging plays an important role in assessing these complications and guiding management. The pathophysiology, imaging modalities, and current surveillance recommendations are discussed and illustrated. CONCLUSION. Significant improvement in survival of patients with Fontan circulation is associated with ongoing cardiac and extracardiac comorbidities and multisystemic complications. The liver and intestines are particularly vulnerable to damage. In addition, this patient population has been shown to be at increased risk of certain malignancies such as hepatocellular carcinoma and neuroendocrine tumors. Familiarity with imaging findings of Fontan-associated liver disease and other abdominal complications of the Fontan circulation is essential for radiologists because we are likely to encounter these patients in our general practice.
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10
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Rodriguez DS, Mao C, Mahle WT, Kanter KR, Alazraki A, Braithwaite K, Rytting H, Caltharp S, Magliocca JF, Romero R. Pretransplantation and Post-Transplantation Liver Disease Assessment in Adolescents Undergoing Isolated Heart Transplantation for Fontan Failure. J Pediatr 2021; 229:78-85.e2. [PMID: 32976893 DOI: 10.1016/j.jpeds.2020.09.044] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 08/17/2020] [Accepted: 09/17/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To describe the assessment of Fontan-associated liver disease and determine the clinical and imaging measures that may identify hepatic morbidity risk in isolated heart transplantation candidates and trend those measures post-isolated heart transplantation. STUDY DESIGN Retrospective analysis of pre-isolated heart transplantation and post-isolated heart transplantation Fontan-associated liver disease (FALD) status using blood tests, magnetic resonance imaging (MRI), and liver biopsy analysis within 6 months before isolated heart transplantation and 12 months after isolated heart transplantation in 9 consecutive patients with Fontan. Pre- and post-isolated heart transplantation standard laboratory values; varices, ascites, splenomegaly, thrombocytopenia (VAST) score; Fontan liver MRI score; liver biopsy scores; Model for End-stage Liver Disease (MELD); MELD excluding the International Normalized Ratio (MELD-XI); AST to platelet ratio index, and cardiac catheterization data were compared. RESULTS Pretransplantation maximum MELD and MELD-XI was 15 and 16, respectively. Central venous pressures and VAST scores decreased significantly post-transplantation. In 5 paired studies, Fontan liver MRI score maximum was 10 pretransplantation and decreased significantly post-transplantation. Arterially enhancing nodules on MRI persisted in 2 patients post-transplantation. Pretransplantation and post-transplantation liver biopsy scores did not differ in 4 paired biopsy specimens. CONCLUSIONS Patients with FALD and MELD <15, MELD-XI <16, Fontan liver MRI score <10, and VAST score ≤2 can have successful short-term isolated heart transplantation outcomes. Liver MRI and VAST scores improved post-transplantation. Post-transplantation liver biopsy scores did not change significantly. Pretransplantation liver biopsy demonstrating fibrosis alone should not exclude consideration of isolated heart transplantation. The persistence of hepatic vascular remodeling and fibrosis post-isolated heart transplantation suggests that continued surveillance for hepatic complications post-transplantation for patients with Fontan is reasonable.
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Affiliation(s)
- Dellys Soler Rodriguez
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA
| | - Chad Mao
- Sibley Heart Center, Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA
| | - William T Mahle
- Sibley Heart Center, Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA
| | - Kirk R Kanter
- Division of Cardiothoracic Surgery, Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA
| | - Adina Alazraki
- Division of Pediatric Radiology, Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA
| | - Kiery Braithwaite
- Division of Pediatric Radiology, Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA
| | - Heather Rytting
- Department of Pathology, Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA
| | - Shelley Caltharp
- Department of Pathology, Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA
| | - Joseph F Magliocca
- Transplant Section, Department of Surgery, Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA
| | - René Romero
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA.
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12
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Dillman JR, Trout AT, Alsaied T, Gupta A, Lubert AM. Imaging of Fontan-associated liver disease. Pediatr Radiol 2020; 50:1528-1541. [PMID: 32809067 DOI: 10.1007/s00247-020-04776-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 06/01/2020] [Accepted: 07/06/2020] [Indexed: 12/22/2022]
Abstract
The Fontan operation has dramatically altered the natural history of functionally single ventricle congenital heart disease. Patients who have undergone the Fontan operation are living longer and, thus, noncardiac morbidity resulting from the Fontan operation is increasingly being recognized. Fontan-associated liver disease (FALD), one of the chief morbidities following the Fontan operation, is believed to be a multifactorial process that manifests as hepatic congestion and fibrosis, portal hypertension, and development of focal liver lesions, including malignant tumors. This article reviews the imaging findings of FALD in the pediatric and young adult population, reviews the literature related to the imaging of FALD and discusses possible screening algorithms for this population. The need for further research to better understand the causes of FALD, to establish if early liver stiffness measurements (or their change over time) predict long-term outcomes and complications, and to define optimal liver screening procedures is highlighted.
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Affiliation(s)
- Jonathan R Dillman
- Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA. .,Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | - Andrew T Trout
- Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA.,Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Tarek Alsaied
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Anita Gupta
- Department of Pathology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Adam M Lubert
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
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13
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Current Trends and Critical Care Considerations for the Management of Single Ventricle Neonates. CURRENT PEDIATRICS REPORTS 2020. [DOI: 10.1007/s40124-020-00227-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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The Fontan outcomes network: first steps towards building a lifespan registry for individuals with Fontan circulation in the United States. Cardiol Young 2020; 30:1070-1075. [PMID: 32635947 DOI: 10.1017/s1047951120001869] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The Fontan Outcomes Network was created to improve outcomes for children and adults with single ventricle CHD living with Fontan circulation. The network mission is to optimise longevity and quality of life by improving physical health, neurodevelopmental outcomes, resilience, and emotional health for these individuals and their families. This manuscript describes the systematic design of this new learning health network, including the initial steps in development of a national, lifespan registry, and pilot testing of data collection forms at 10 congenital heart centres.
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Patel ND, Sullivan PM, Sabati A, Hill A, Maedler-Kron C, Zhou S, Shillingford N, Williams R, Takao C, Badran S. Routine Surveillance Catheterization is Useful in Guiding Management of Stable Fontan Patients. Pediatr Cardiol 2020; 41:624-631. [PMID: 31980851 DOI: 10.1007/s00246-020-02293-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/17/2020] [Indexed: 11/24/2022]
Abstract
We developed a Fontan surveillance catheterization protocol as part of routine assessment of stable patients 10 years after Fontan completion. The surveillance catherization includes hemodynamic assessment with inhaled nitric oxide, angiography, liver biopsy, and transcatheter intervention if indicated. We aimed to describe hemodynamic and liver biopsy findings, response to pulmonary vasoreactivity testing, rates of transcatheter intervention, and changes in medical therapy following surveillance catheterization in stable Fontan patients. A single-center retrospective review of Fontan patients undergoing surveillance catheterization between November 2014 and May 2019 was performed. Liver biopsies were independently scored by two pathologists. Sixty-three patients underwent surveillance catheterization (mean age 14.6 ± 3.0 years). The mean Fontan pressure was 11.8 ± 2.1 mmHg. The mean cardiac index was 2.9 ± 0.6 L/min/m2. In the 51 patients who underwent pulmonary vasoreactivity testing, there was a significant decrease in median pulmonary vascular resistance (1.8 [range 0.8-4.1] vs 1.4 [range 0.7-3.0] Wood units × m2; p < 0.001). The mean cardiac index increased (3.0 ± 0.6 vs 3.2 ± 0.7 L/min/m2, p = 0.009). The Fontan pressure did not change significantly. Fifty-seven patients underwent liver biopsy, and all but one showed fibrosis. Nineteen patients (33.3%) demonstrated bridging fibrosis or cirrhosis. Twenty-five patients underwent 34 transcatheter interventions. Pulmonary artery or Fontan stent placement was performed in 19 patients. Phosphodiesterase type 5 inhibitors were initiated in nine patients following surveillance catheterization. Routine surveillance catheterization with liver biopsy in adolescent Fontan patients reveals information that can guide interventional and medical management. Further long-term follow-up and assessment are indicated to assess the benefit of these interventions.
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Affiliation(s)
- Neil D Patel
- Division of Pediatric Cardiology, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, 4650 Sunset Blvd, Mailstop #34, Los Angeles, CA, 90027, USA.
| | - Patrick M Sullivan
- Division of Pediatric Cardiology, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, 4650 Sunset Blvd, Mailstop #34, Los Angeles, CA, 90027, USA
| | - Arash Sabati
- Division of Pediatric Cardiology, Phoenix Children's Hospital, University of Arizona College of Medicine, Phoenix, AZ, USA
| | - Allison Hill
- Division of Pediatric Cardiology, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, 4650 Sunset Blvd, Mailstop #34, Los Angeles, CA, 90027, USA
| | | | - Shengmei Zhou
- Department of Pathology, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA, USA
| | - Nick Shillingford
- Department of Pathology, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA, USA
| | - Roberta Williams
- Division of Pediatric Cardiology, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, 4650 Sunset Blvd, Mailstop #34, Los Angeles, CA, 90027, USA
| | - Cheryl Takao
- Division of Pediatric Cardiology, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, 4650 Sunset Blvd, Mailstop #34, Los Angeles, CA, 90027, USA
| | - Sarah Badran
- Division of Pediatric Cardiology, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, 4650 Sunset Blvd, Mailstop #34, Los Angeles, CA, 90027, USA
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Late recognition and transcatheter closure of ventriculopulmonary artery shunts in Fontan patients. Anatol J Cardiol 2019; 22:332-333. [PMID: 31789612 PMCID: PMC6955039 DOI: 10.14744/anatoljcardiol.2019.33581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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17
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Davey BT, Toro-Salazar OH, Gauthier N, Valente AM, Elder RW, Wu FM, Berman N, Pollack P, Lee JH, Rathod RH. Surveillance and screening practices of New England congenital cardiologists for patients after the Fontan operation. CONGENIT HEART DIS 2019; 14:1013-1023. [PMID: 31642600 DOI: 10.1111/chd.12854] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/16/2019] [Accepted: 09/11/2019] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Surveillance and management guidelines for Fontan patients are lacking due to the paucity of evidence in the literature of screening efficacy on outcome measures. METHODS The Fontan Working Group within the New England Congenital Cardiology Association designed an electronic survey to assess surveillance practices for patients with Fontan procedures among New England congenital cardiologists and to explore variability in screening low-risk vs high-risk Fontan patients across regional programs. RESULTS Fifty-six cardiologists representing 12 regional programs responded to the survey, comprising ~40% of the total New England congenital cardiac physicians. The majority of desired testing and consultation was available within 50 miles of the patient's home institution with some limitations of cardiac catheterization and cardiac magnetic resonance imaging availability. Surveillance and screening were less frequent in low-risk Fontan patients compared to high-risk Fontan patients. Counseling practices were similar for both low-risk and high-risk Fontan patients. Aspirin monotherapy was recommended by 82% of providers for low-risk Fontan patients, while anticoagulation regimens were more varied for the high-risk population. Practitioners with ≤15 years of experience were more likely to provide quality of life testing in both low-risk and high-risk Fontan patients. There were no other major differences in testing frequencies by years of practice, quaternary vs nonquaternary care facility, or the number of Fontan patients in a practice. CONCLUSION This survey provides insight into regional practices of screening and surveillance of Fontan patients. These data may be used to design future research studies and evidence-based guidelines to streamline the approach to manage these complex patients.
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Affiliation(s)
| | | | - Naomi Gauthier
- Boston Children's Hospital, Boston, Massachusetts.,Children's Hospital at Dartmouth-Hitchcock, Lebanon, New Hampshire
| | | | - Robert W Elder
- Yale-New Haven Children's Hospital, New Haven, Connecticut
| | - Fred M Wu
- Boston Children's Hospital, Boston, Massachusetts
| | - Norman Berman
- Children's Hospital at Dartmouth-Hitchcock, Lebanon, New Hampshire
| | | | - Ji Hyun Lee
- Connecticut Children's, Hartford, Connecticut
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Rychik J, Atz AM, Celermajer DS, Deal BJ, Gatzoulis MA, Gewillig MH, Hsia TY, Hsu DT, Kovacs AH, McCrindle BW, Newburger JW, Pike NA, Rodefeld M, Rosenthal DN, Schumacher KR, Marino BS, Stout K, Veldtman G, Younoszai AK, d'Udekem Y. Evaluation and Management of the Child and Adult With Fontan Circulation: A Scientific Statement From the American Heart Association. Circulation 2019; 140:e234-e284. [PMID: 31256636 DOI: 10.1161/cir.0000000000000696] [Citation(s) in RCA: 429] [Impact Index Per Article: 85.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
It has been 50 years since Francis Fontan pioneered the operation that today bears his name. Initially designed for patients with tricuspid atresia, this procedure is now offered for a vast array of congenital cardiac lesions when a circulation with 2 ventricles cannot be achieved. As a result of technical advances and improvements in patient selection and perioperative management, survival has steadily increased, and it is estimated that patients operated on today may hope for a 30-year survival of >80%. Up to 70 000 patients may be alive worldwide today with Fontan circulation, and this population is expected to double in the next 20 years. In the absence of a subpulmonary ventricle, Fontan circulation is characterized by chronically elevated systemic venous pressures and decreased cardiac output. The addition of this acquired abnormal circulation to innate abnormalities associated with single-ventricle congenital heart disease exposes these patients to a variety of complications. Circulatory failure, ventricular dysfunction, atrioventricular valve regurgitation, arrhythmia, protein-losing enteropathy, and plastic bronchitis are potential complications of the Fontan circulation. Abnormalities in body composition, bone structure, and growth have been detected. Liver fibrosis and renal dysfunction are common and may progress over time. Cognitive, neuropsychological, and behavioral deficits are highly prevalent. As a testimony to the success of the current strategy of care, the proportion of adults with Fontan circulation is increasing. Healthcare providers are ill-prepared to tackle these challenges, as well as specific needs such as contraception and pregnancy in female patients. The role of therapies such as cardiovascular drugs to prevent and treat complications, heart transplantation, and mechanical circulatory support remains undetermined. There is a clear need for consensus on how best to follow up patients with Fontan circulation and to treat their complications. This American Heart Association statement summarizes the current state of knowledge on the Fontan circulation and its consequences. A proposed surveillance testing toolkit provides recommendations for a range of acceptable approaches to follow-up care for the patient with Fontan circulation. Gaps in knowledge and areas for future focus of investigation are highlighted, with the objective of laying the groundwork for creating a normal quality and duration of life for these unique individuals.
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