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Yasuhara J, Watanabe K, Watanabe A, Shirasu T, Matsuzaki Y, Watanabe H, Takagi H, Sumitomo N, Kuno T. Pulmonary vasodilator therapies in pulmonary arterial hypertension associated with CHD: a systematic review and network meta-analysis. Cardiol Young 2023; 33:2297-2311. [PMID: 36721907 DOI: 10.1017/s1047951123000124] [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] [Indexed: 02/02/2023]
Abstract
The optimal treatment strategy using pulmonary vasodilators in pulmonary arterial hypertension associated with CHD (PAH-CHD) remains controversial. We aimed to compare the efficacy and safety of pulmonary vasodilators in PAH-CHD. PubMed and EMBASE databases were searched through May 2022 and a network meta-analysis was conducted. The primary outcomes were mean difference of changes in 6-minute walk distance, NYHA functional class, and N-terminal pro-brain natriuretic peptide. The secondary outcomes included pulmonary vascular resistance, mean pulmonary arterial pressure, and resting oxygen saturation. We identified 14 studies, yielding 807 patients with PAH-CHD. Bosentan and sildenafil were associated with a significant increase in 6-minute walk distance from baseline compared with placebo (MD 48.92 m, 95% CI 0.32 to 97.55 and MD 59.70 m, 95% CI 0.88 to 118.53, respectively). Bosentan, sildenafil, and combination of bosentan and sildenafil were associated with significant improvement in NYHA functional class compared with placebo (MD -0.33, 95% CI -0.51 to -0.14, MD -0.58, 95% CI -0.75 to -0.22 and MD -0.62, 95% CI -0.92 to -0.31, respectively). Bosentan and sildenafil were also associated with significant improvements in secondary outcomes. These findings were largely confirmed in the subgroup analysis. Various adverse events were reported; however, serious adverse event rates were relatively low (4.8-8.7%), including right heart failure, acute kidney injury, respiratory failure, hypotension, and discontinuation of pulmonary vasodilators. In conclusion, bosentan and sildenafil were the most effective in improving prognostic risk factor such as 6-minute walk distance and NYHA class. Overall, pulmonary vasodilators were well tolerated in PAH-CHD.
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Affiliation(s)
- Jun Yasuhara
- Center for Cardiovascular Research, The Abigail Wexner Research and The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
| | - Kae Watanabe
- Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Atsuyuki Watanabe
- Division of Hospital Medicine, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Takuro Shirasu
- Department of Surgery and Division of Vascular and Endovascular Surgery, School of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Yuichi Matsuzaki
- Division of Cardiac Surgery, McGill University, Montréal, Québec, Canada
| | - Hirofumi Watanabe
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, USA
| | - Hisato Takagi
- Division of Cardiovascular Surgery, Shizuoka Medical Center, Shizuoka, Japan
| | - Naokata Sumitomo
- Department of Pediatric Cardiology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Toshiki Kuno
- Division of Cardiology, Montefiore Medical Center, Albert Einstein College of Medicine, New York, NY, USA
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The Fontan circulation: from ideal to failing hemodynamics and drug therapies for optimization. Can J Cardiol 2022; 38:1059-1071. [DOI: 10.1016/j.cjca.2022.04.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 12/19/2022] Open
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Becker K, Uebing A, Hansen JH. Pulmonary vascular disease in Fontan circulation-is there a rationale for pulmonary vasodilator therapies? Cardiovasc Diagn Ther 2021; 11:1111-1121. [PMID: 34527537 DOI: 10.21037/cdt-20-431] [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] [Received: 04/12/2020] [Accepted: 06/29/2020] [Indexed: 12/21/2022]
Abstract
The Fontan circulation is a palliative concept for patients with univentricular hearts. The central veins are connected directly to the pulmonary arteries (cavo-pulmonary connection) to separate the pulmonary and the systemic circulation. There is no sub-pulmonary ventricle that generates pressure to drive blood through the pulmonary arteries. Pulmonary blood flow is determined by central venous pressure (CVP) and pulmonary vascular resistance (PVR). The capability of the Fontan circulation to compensate for alterations in PVR is limited, as CVP can only be increased within narrow ranges without adverse clinical consequences. Consequently, systemic ventricular preload and cardiac output are dependent on a healthy lung with low PVR. Failure of the Fontan circulation is relatively common. In addition to ventricular dysfunction, maladaptive pulmonary vascular remodeling resulting in increased pulmonary resistance may play a key role. The pathophysiology of the maladaptive vascular processes remains largely unclear and diagnosis of an increased PVR is challenging in Fontan circulation as accurate measurement of pulmonary arterial blood flow is difficult. In the absence of a sub-pulmonary ventricle, pulmonary artery pressure will almost never reach the threshold conventionally used to define pulmonary arterial hypertension. There is a need for markers of pulmonary vascular disease complementary to invasive hemodynamic data in Fontan patients. In order to treat or prevent failure of the Fontan circulation, pathophysiological considerations support the use of pulmonary vasodilators to augment pulmonary blood flow and systemic ventricular preload and lower CVP. However, to date the available trial data have neither yielded enough evidence to support routine use of pulmonary vasodilators in every Fontan patient nor have they been helpful in defining subgroups of patients that might benefit from such therapies. This review discusses potential pathomechanisms of pulmonary vascular disease; it summarizes the current knowledge of the effects and efficacy of pulmonary vasodilator therapy in Fontan patients and tries to outline areas of potential future research on the diagnosis and treatment of pulmonary vascular disease and Fontan failure.
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Affiliation(s)
- Kolja Becker
- Department of Congenital Heart Disease and Pediatric Cardiology, University Hospital of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Anselm Uebing
- Department of Congenital Heart Disease and Pediatric Cardiology, University Hospital of Schleswig-Holstein, Campus Kiel, Kiel, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Germany
| | - Jan Hinnerk Hansen
- Department of Congenital Heart Disease and Pediatric Cardiology, University Hospital of Schleswig-Holstein, Campus Kiel, Kiel, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Germany
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Gorenflo M, Ziesenitz VC. Treatment of pulmonary arterial hypertension in children. Cardiovasc Diagn Ther 2021; 11:1144-1159. [PMID: 34527540 DOI: 10.21037/cdt-20-912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 04/27/2021] [Indexed: 11/06/2022]
Abstract
Pulmonary arterial hypertension (PAH) is a devastating illness causing already significant morbidity in childhood. Currently approved treatment options for children comprise the endothelin receptor antagonist bosentan, as well as the phosphodiesterase-5 inhibitor sildenafil. But PAH treatment has advanced significantly over the past decade, and new classes of targeted drug therapies, such as stimulators of the soluble guanylate cyclase (riociguat) or prostacyclin receptor agonists (selexipag), are currently evaluated regarding their efficacy and safety in children, in order to limit off-label use. Due to the different etiologies in children, such as PAH-CHD, there is no evidence that initial combination therapy in children is superior to a mono-therapy with respect to survival. Special attention should also be paid to the pharmacology of PAH drugs in children, which might be impacted by ontogeny or drug-drug-interactions. Therapeutic drug monitoring may be useful in pediatric patients. There is a clear need for more controlled studies of PAH medications, alone or in combination therapy in the pediatric age group. Data from clinical trials as well as from patient registries should be pooled to optimize drug development and evaluation, trial design, and evidence-based pharmacotherapy in pediatric patients with PAH. In this review, the current treatment options of pediatric PAH are summarized, and an overview of new treatment concepts, which are already evaluated in adults, is presented.
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Affiliation(s)
- Matthias Gorenflo
- Department of Pediatric Cardiology and Congenital Heart Diseases, Centre of Child and Adolescent Health, University Hospital Heidelberg, Heidelberg, Germany
| | - Victoria C Ziesenitz
- Department of Pediatric Cardiology and Congenital Heart Diseases, Centre of Child and Adolescent Health, University Hospital Heidelberg, Heidelberg, Germany
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Shmalts AA, Gorbachevsky SV. Evidence base for specific pulmonary vasodilators in adults with congenital heart disease. TERAPEVT ARKH 2021; 93:1106-1116. [DOI: 10.26442/00403660.2021.09.201022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 10/10/2021] [Indexed: 11/22/2022]
Abstract
After reviewing the current definitions and classification of pulmonary hypertension (PH) associated with congenital heart disease (CHD), based on an analysis of 59 clinical trials (of which 14 are randomized controlled trials) drugs registered in the Russian Federation, the evidence base for PH therapy in adults with CHD is provided. The presence of a randomized controlled trial of bosentan BREATHE-5 and uncontrolled trials of other drugs became the basis for a higher class and level of evidence of bosentan (IB) compared to other drugs (IIaC) for Eisenmenger syndrome in the current European (ERS/ESC 2015) and updated Russian (2020) guidelines. According to the updated European (ESC 2020) guidelines for congenital heart disease in adults, in Eisenmenger patients with reduced exercise capacity (6MWT distance 450 m), a treatment strategy with initial endothelin receptor antagonist monotherapy should be considered followed by combination therapy if patients fail to improve (IIaB), in low- and intermediate-risk patients with repaired simple lesions and pre-capillary PH, initial oral combination therapy or sequential combination therapy is recommended and high-risk patients should be treated with initial combination therapy including parenteral prostanoids (IA) and endothelin receptor antagonists and phosphodiesterase 5 inhibitors may be considered in selected patients with elevated pulmonary pressure/resistance in the absence of elevated ventricular end diastolic pressure (IIbC). Only three (bosentan, macitentan and selexipag) out of seven specific pulmonary vasodilators registered in the Russian Federation have indications for pulmonary arterial hypertension associated with congenital heart disease and Eisenmenger syndrome or pulmonary arterial hypertension associated with corrected simple congenital heart disease in the instructions for use.
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Liu C, Chen J, Gao Y, Deng B, Liu K. Endothelin receptor antagonists for pulmonary arterial hypertension. Cochrane Database Syst Rev 2021; 3:CD004434. [PMID: 33765691 PMCID: PMC8094512 DOI: 10.1002/14651858.cd004434.pub6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Pulmonary arterial hypertension is a devastating disease that leads to right heart failure and premature death. Endothelin receptor antagonists have shown efficacy in the treatment of pulmonary arterial hypertension. OBJECTIVES To evaluate the efficacy of endothelin receptor antagonists (ERAs) in pulmonary arterial hypertension. SEARCH METHODS We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, and the reference sections of retrieved articles. The searches are current as of 4 November 2020. SELECTION CRITERIA We included randomised trials and quasi-randomised trials involving participants with pulmonary arterial hypertension. DATA COLLECTION AND ANALYSIS Two of five review authors selected studies, extracted data and assessed study quality according to established criteria. We used standard methods expected by Cochrane. The primary outcomes were exercise capacity (six-minute walk distance, 6MWD), World Health Organization (WHO) or New York Heart Association (NYHA) functional class, Borg dyspnoea scores and dyspnoea-fatigue ratings, and mortality. MAIN RESULTS We included 17 randomised controlled trials involving a total of 3322 participants. Most trials were of relatively short duration (12 weeks to six months). Sixteen trials were placebo-controlled, and of these nine investigated a non-selective ERA and seven a selective ERA. We evaluated two comparisons in the review: ERA versus placebo and ERA versus phosphodiesterase type 5 (PDE5) inhibitor. The abstract focuses on the placebo-controlled trials only and presents the pooled results of selective and non-selective ERAs. After treatment, participants receiving ERAs could probably walk on average 25.06 m (95% confidence interval (CI) 17.13 to 32.99 m; 2739 participants; 14 studies; I2 = 34%, moderate-certainty evidence) further than those receiving placebo in a 6MWD. Endothelin receptor antagonists probably improved more participants' WHO functional class (odds ratio (OR) 1.41, 95% CI 1.16 to 1.70; participants = 3060; studies = 15; I2 = 5%, moderate-certainty evidence) and probably lowered the odds of functional class deterioration (OR 0.43, 95% CI 0.26 to 0.72; participants = 2347; studies = 13; I2 = 40%, moderate-certainty evidence) compared with placebo. There may be a reduction in mortality with ERAs (OR 0.78, 95% CI 0.58, 1.07; 2889 participants; 12 studies; I2 = 0%, low-certainty evidence), and pooled data suggest that ERAs probably improve cardiopulmonary haemodynamics and may reduce Borg dyspnoea score in symptomatic patients. Hepatic toxicity was not common, but may be increased by ERA treatment from 37 to 67 (95% CI 34 to 130) per 1000 over 25 weeks of treatment (OR 1.88, 95% CI 0.91 to 3.90; moderate-certainty evidence). Although ERAs were well tolerated in this population, several cases of irreversible liver failure caused by sitaxsentan have been reported, which led the licence holder for sitaxsentan to withdraw the product from all markets worldwide. As planned, we performed subgroup analyses comparing selective and non-selective ERAs, and with the exception of mean pulmonary artery pressure, did not detect any clear subgroup differences for any outcome. AUTHORS' CONCLUSIONS For people with pulmonary arterial hypertension with WHO functional class II and III, endothelin receptor antagonists probably increase exercise capacity, improve WHO functional class, prevent WHO functional class deterioration, result in favourable changes in cardiopulmonary haemodynamic variables compared with placebo. However, they are less effective in reducing dyspnoea and mortality. The efficacy data were strongest in those with idiopathic pulmonary hypertension. The irreversible liver failure caused by sitaxsentan and its withdrawal from global markets emphasise the importance of hepatic monitoring in people treated with ERAs. The question of the effects of ERAs on pulmonary arterial hypertension has now likely been answered.. The combined use of ERAs and phosphodiesterase inhibitors may provide more benefit in pulmonary arterial hypertension; however, this needs to be confirmed in future studies.
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Affiliation(s)
- Chao Liu
- Division of Cardiology, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Junmin Chen
- Department of Haematology and Rheumatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Yanqiu Gao
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Bao Deng
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Kunshen Liu
- The First Hospital of Hebei Medical University, Shijiazhuang, China
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Albinni S, Marx M, Lang IM. Focused Update on Pulmonary Hypertension in Children-Selected Topics of Interest for the Adult Cardiologist. MEDICINA (KAUNAS, LITHUANIA) 2020; 56:E420. [PMID: 32825190 PMCID: PMC7559541 DOI: 10.3390/medicina56090420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/13/2020] [Accepted: 08/16/2020] [Indexed: 11/16/2022]
Abstract
Pulmonary hypertensive vascular disease (PHVD), and pulmonary hypertension (PH), which is a broader term, are severe conditions associated with high morbidity and mortality at all ages. Treatment guidelines in childhood are widely adopted from adult data and experience, though big differences may exist regarding aetiology, concomitant conditions and presentation. Over the past few years, paediatric aspects have been incorporated into the common guidelines, which currently address both children and adults with pulmonary hypertension (PH). There are multiple facets of PH in the context of cardiac conditions in childhood. Apart from Eisenmenger syndrome (ES), the broad spectrum of congenital heart disease (CHD) comprises PH in failing Fontan physiology, as well as segmental PH. In this review we provide current data and novel aspects on the pathophysiological background and individual management concepts of these conditions. Moreover, we focus on paediatric left heart failure with PH and its challenging issues, including end stage treatment options, such as mechanical support and paediatric transplantation. PH in the context of rare congenital disorders, such as Scimitar Syndrome and sickle cell disease is discussed. Based on current data, we provide an overview on multiple underlying mechanisms of PH involved in these conditions, and different management strategies in children and adulthood. In addition, we summarize the paediatric aspects and the pros and cons of the recently updated definitions of PH. This review provides deeper insights into some challenging conditions of paediatric PH in order to improve current knowledge and care for children and young adults.
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Affiliation(s)
- Sulaima Albinni
- Paediatric Heart Centre Vienna, Department of Paediatrics and Adolescent Medicine, Medical University of Vienna, 1090 Wien, Austria;
| | - Manfred Marx
- Paediatric Heart Centre Vienna, Department of Paediatrics and Adolescent Medicine, Medical University of Vienna, 1090 Wien, Austria;
| | - Irene M. Lang
- AKH-Vienna, Department of Cardiology, Medical University of Vienna, 1090 Wien, Austria;
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Jeremiasen I, Tran-Lundmark K, Idris N, Tran PK, Moledina S. Pulmonary Vasodilator Therapy in Children with Single Ventricle Physiology: Effects on Saturation and Pulmonary Arterial Pressure. Pediatr Cardiol 2020; 41:1651-1659. [PMID: 32734529 PMCID: PMC7695650 DOI: 10.1007/s00246-020-02424-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 07/21/2020] [Indexed: 11/30/2022]
Abstract
In children with single ventricle physiology, increased pulmonary vascular resistance may impede surgical progression or result in failing single ventricle physiology. The use of pulmonary vasodilators has been suggested as a potential therapy. However, knowledge on indication, dosage, and effect is limited. A retrospective case notes review of all (n = 36) children with single ventricle physiology, treated with pulmonary vasodilators by the UK Pulmonary Hypertension Service for Children 2004-2017. Therapy was initiated in Stage 1 (n = 12), Glenn (n = 8), or TCPC (n = 16). Treatment indications were high mean pulmonary arterial pressure, cyanosis, reduced exercise tolerance, protein-losing enteropathy, ascites, or plastic bronchitis. Average dose of sildenafil was 2.0 mg/kg/day and bosentan was 3.3 mg/kg/day. 56% had combination therapy. Therapy was associated with a reduction of the mean pulmonary arterial pressure from 19 to 14 mmHg (n = 17, p < 0.01). Initial therapy with one or two vasodilators was associated with an increase in the mean saturation from 80 to 85%, (n = 16, p < 0.01). Adding a second vasodilator did not give significant additional effect. 5 of 12 patients progressed from Stage 1 to Glenn, Kawashima, or TCPC, and 2 of 8 from Glenn to TCPC during a mean follow-up time of 4.7 years (0-12.8). Bosentan was discontinued in 57% and sildenafil in 14% of treated patients and saturations remained stable. Pulmonary vasodilator therapy was well tolerated and associated with improvements in saturation and mean pulmonary arterial pressure in children with single ventricle physiology. It appears safe to discontinue when no clear benefit is observed.
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Affiliation(s)
- Ida Jeremiasen
- Department of Experimental Medical Science, Lund University, BMC C12, 221 84, Lund, Sweden. .,The Pediatric Heart Center, Skane University Hospital, Lund, Sweden.
| | - Karin Tran-Lundmark
- Department of Experimental Medical Science, Lund University, BMC C12, 221 84 Lund, Sweden ,The Pediatric Heart Center, Skane University Hospital, Lund, Sweden
| | - Nikmah Idris
- Great Ormond Street Hospital for Children, London, UK
| | - Phan-Kiet Tran
- The Pediatric Heart Center, Skane University Hospital, Lund, Sweden
| | - Shahin Moledina
- Great Ormond Street Hospital for Children, London, UK ,University College London, London, UK
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9
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Abstract
We aimed to assess the efficacy and safety of pulmonary vasodilators in patients after the Fontan procedure. The PubMed, EMBASE, and Cochrane Library databases were searched through November 2019 for studies comparing pulmonary vasodilators and controls in Fontan patients. The variables assessed included change in pulmonary resistance, heart function, exercise capacity, quality of life, mortality, and adverse events after drug administration. A random/fixed effects model was used to assess the mean difference (MD)/risk ratio (RR) with 95% confidence intervals (CIs). Subgroup analysis was stratified by drug category. In total, 449 Fontan patients from 13 studies were included. Pooled estimates of the change in pulmonary arterial pressure (MD, - 1.07; 95% CI, - 2.75 to 0.60; p = 0.21), New York Heart Association class (MD, - 0.57; 95% CI, - 1.41 to 0.28; p = 0.19), peak oxygen consumption (MD, 1.46; 95% CI, 0.01 to 2.90; p = 0.05), Short Form 36 (MD, 1.39; 95% CI, - 0.62 to 3.39; p = 0.17), mortality (RR, 0.37; 95% CI, 0.08 to 1.65; p = 0.19), and any adverse event (RR, 0.94; 95% CI, 0.71 to 1.24; p = 0.64) were not significantly different between the drug and control groups. Likewise, most results of the subgroup analysis revealed no significant between-group differences. Pulmonary vasodilator therapy appears to be safe, but not beneficial, in the categories of pulmonary resistance, heart function, or quality of life in patients who have undergone a Fontan procedure. No significant evidence was found to confirm that most pulmonary vasodilators could improve exercise capacity in Fontan patients.
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Rosenzweig EB, Abman SH, Adatia I, Beghetti M, Bonnet D, Haworth S, Ivy DD, Berger RMF. Paediatric pulmonary arterial hypertension: updates on definition, classification, diagnostics and management. Eur Respir J 2019; 53:1801916. [PMID: 30545978 PMCID: PMC6351335 DOI: 10.1183/13993003.01916-2018] [Citation(s) in RCA: 326] [Impact Index Per Article: 65.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Accepted: 10/09/2018] [Indexed: 12/16/2022]
Abstract
Paediatric pulmonary arterial hypertension (PAH) shares common features of adult disease, but is associated with several additional disorders and challenges that require unique approaches. This article discusses recent advances, ongoing challenges and distinct approaches for the care of children with PAH, as presented by the Paediatric Task Force of the 6th World Symposium on Pulmonary Hypertension. We provide updates of the current definition, epidemiology, classification, diagnostics and treatment of paediatric PAH, and identify critical knowledge gaps. Several features of paediatric PAH including the prominence of neonatal PAH, especially in pre-term infants with developmental lung diseases, and novel genetic causes of paediatric PAH are highlighted. The use of cardiac catheterisation as a diagnostic modality and haemodynamic definitions of PAH, including acute vasoreactivity, are addressed. Updates are provided on issues related to utility of the previous classification system to reflect paediatric-specific aetiologies and approaches to medical and interventional management of PAH, including the Potts shunt. Although a lack of clinical trial data for the use of PAH-targeted therapy persists, emerging data are improving the identification of appropriate targets for goal-oriented therapy in children. Such data will likely improve future clinical trial design to enhance outcomes in paediatric PAH.
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Affiliation(s)
- Erika B Rosenzweig
- Columbia University Medical Center, New York Presbyterian Hospital, New York, NY, USA
| | - Steven H Abman
- University of Colorado, Children's Hospital Colorado, Denver, CO, USA
| | - Ian Adatia
- Glenwood Children's Heart Clinic, Edmonton, AB, Canada
| | - Maurice Beghetti
- Pediatric Cardiology Unit and Centre Universitaire de Cardiologie et Chirurgie Cardiaque Pédiatrique, University Hospitals of Geneva and Lausanne, Lausanne, Switzerland
| | - Damien Bonnet
- Hôpital Necker Enfants Malades, AP-HP, Université Paris Descartes, Paris, France
| | | | - D Dunbar Ivy
- University of Colorado, Children's Hospital Colorado, Denver, CO, USA
| | - Rolf M F Berger
- Center for Congenital Heart Diseases, Pediatric Cardiology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Wang W, Hu X, Liao W, Rutahoile W, Malenka DJ, Zeng X, Yang Y, Feng P, Wen L, Huang W. The efficacy and safety of pulmonary vasodilators in patients with Fontan circulation: a meta-analysis of randomized controlled trials. Pulm Circ 2019; 9:2045894018790450. [PMID: 29972332 PMCID: PMC6348526 DOI: 10.1177/2045894018790450] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 07/02/2018] [Indexed: 11/17/2022] Open
Abstract
No previous meta-analysis has evaluated the efficacy and safety of pulmonary vasodilators in Fontan physiology. Recent relative trials have obtained conflicting results regarding improvements in peak oxygen consumption; the relatively small number of patients in each study may be a limiting factor. We aimed to evaluate the efficacy and safety of pulmonary vasodilators in Fontan patients. Relevant studies were identified by searching the PubMed, Embase, and Cochrane Library databases. Pooled outcomes were determined to assess the efficacy and safety of pulmonary vasodilators in Fontan patients. Nine randomized controlled studies involving 381 patients with Fontan circulation were included. Pulmonary vasodilator therapy led to significant improvement (mean difference = -0.39, 95% CI: [-0.72, -0.05]) in the New York Heart Association (NYHA) functional class. The 6-minute walking distance (6MWD) was significantly increased by 134 m (95% CI: [86.07, 181.94]), and the peak VO2 was also significantly improved (mean difference = 1.42 ml·(kg·min)-1, 95% CI: [0.21, 2.63]). Additionally, the mean pulmonary artery pressure (mPAP) was significantly reduced (mean difference = -2.25 mmHg, 95% CI: [-3.00, -1.50]). No significant change was found in mortality or in brain natriuretic peptide (BNP) or N-terminal pronatriuretic peptide (NT-proBNP). Four studies reported no side effects and good drug tolerance, and two studies reported mild adverse effects. The present meta-analysis indicated that pulmonary vasodilators (primarily the PDE-5 inhibitor and endothelin-1 receptor antagonist) significantly improved the hemodynamics of Fontan patients, reduced the NYHA functional class and increased the 6MWD. The peak oxygen consumption was also improved. No significant change was observed in mortality or in the BNP or NT-proBNP level. Overall, the pulmonary vasodilators were well tolerated. This finding needs to be confirmed in future studies.
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Affiliation(s)
- Wuwan Wang
- Department of Cardiology, the First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Xiankang Hu
- Chongqing Medical University, Chongqing, China
| | - Weitin Liao
- Chongqing Medical University, Chongqing, China
| | - W.H. Rutahoile
- Department of Cardiology, the First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - David J. Malenka
- Section of Cardiovascular Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, USA
| | - Xiaofang Zeng
- Department of Cardiology, the First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Yunjing Yang
- Department of Cardiology, the First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Panpan Feng
- Department of Cardiology, the First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Li Wen
- Department of Cardiology, the First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Wei Huang
- Department of Cardiology, the First Affiliated Hospital, Chongqing Medical University, Chongqing, China
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Ridderbos FJS, Hagdorn QAJ, Berger RMF. Pulmonary vasodilator therapy as treatment for patients with a Fontan circulation: the Emperor's new clothes? Pulm Circ 2018; 8:2045894018811148. [PMID: 30338725 PMCID: PMC6247489 DOI: 10.1177/2045894018811148] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Floris-Jan S Ridderbos
- Department of Pediatric Cardiology, Center for Congenital Heart Diseases, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Quint A J Hagdorn
- Department of Pediatric Cardiology, Center for Congenital Heart Diseases, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Rolf M F Berger
- Department of Pediatric Cardiology, Center for Congenital Heart Diseases, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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van der Ven JPG, van den Bosch E, Bogers AJCC, Helbing WA. State of the art of the Fontan strategy for treatment of univentricular heart disease. F1000Res 2018; 7. [PMID: 30002816 PMCID: PMC6024235 DOI: 10.12688/f1000research.13792.1] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/18/2018] [Indexed: 12/13/2022] Open
Abstract
In patients with a functionally univentricular heart, the Fontan strategy achieves separation of the systemic and pulmonary circulation and reduction of ventricular volume overload. Contemporary modifications of surgical techniques have significantly improved survival. However, the resulting Fontan physiology is associated with high morbidity. In this review, we discuss the state of the art of the Fontan strategy by assessing survival and risk factors for mortality. Complications of the Fontan circulation, such as cardiac arrhythmia, thromboembolism, and protein-losing enteropathy, are discussed. Common surgical and catheter-based interventions following Fontan completion are outlined. We describe functional status measurements such as quality of life and developmental outcomes in the contemporary Fontan patient. The current role of drug therapy in the Fontan patient is explored. Furthermore, we assess the current use and outcomes of mechanical circulatory support in the Fontan circulation and novel surgical innovations. Despite large improvements in outcomes for contemporary Fontan patients, a large burden of disease exists in this patient population. Continued efforts to improve outcomes are warranted. Several remaining challenges in the Fontan field are outlined.
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Affiliation(s)
- Jelle P G van der Ven
- Department of Pediatrics, Division of Pediatric Cardiology, Erasmus MC-Sophia Children's Hospital, Rotterdam, Netherlands.,Netherlands Heart Institute, Utrecht, Netherlands
| | - Eva van den Bosch
- Department of Pediatrics, Division of Pediatric Cardiology, Erasmus MC-Sophia Children's Hospital, Rotterdam, Netherlands.,Netherlands Heart Institute, Utrecht, Netherlands
| | - Ad J C C Bogers
- Department of Cardiothoracic Surgery, Erasmus MC, Rotterdam, Netherlands
| | - Willem A Helbing
- Department of Pediatrics, Division of Pediatric Cardiology, Erasmus MC-Sophia Children's Hospital, Rotterdam, Netherlands
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Brida M, Gatzoulis MA. Pulmonary arterial hypertension in adult congenital heart disease. Heart 2018; 104:1568-1574. [DOI: 10.1136/heartjnl-2017-312106] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 04/10/2018] [Accepted: 04/16/2018] [Indexed: 11/04/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is commonly associated with congenital heart disease (CHD) and relates to type of the underlying cardiac defects and repair history. Large systemic to pulmonary shunts may develop PAH if untreated or repaired late. PAH, when present, markedly increases morbidity and mortality in patients with CHD. Significant progress has been made for patients with Eisenmenger syndrome in pathophysiology, prognostication and disease-targeting therapy (DTT), which needs to be applied to routine patient care. Patients with PAH–CHD and systemic to pulmonary shunting may benefit from late defect closure if pulmonary vascular resistance (PVR) is still normal or near normal. Patients with PAH and coincidental defects, or previous repair of CHD should be managed as those with idiopathic PAH. Patients with a Fontan circulation, despite not strictly fulfilling criteria for PAH, may have elevated PVR; recent evidence suggests that they may also benefit from DTT, but more data are required before general recommendations can be made. CHD–PAH is a lifelong, progressive disease; patients should receive tertiary care and benefit from a proactive DTT approach. Novel biomarkers and genetic advances may identify patients with CHD who should be referred for late defect closure and/or patients at high risk of developing PAH despite early closure in childhood. Ongoing vigilance for PAH and further controlled studies are clearly warranted in CHD.
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The Pulmonary Circulation in the Single Ventricle Patient. CHILDREN-BASEL 2017; 4:children4080071. [PMID: 28783102 PMCID: PMC5575593 DOI: 10.3390/children4080071] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 07/31/2017] [Accepted: 08/03/2017] [Indexed: 02/06/2023]
Abstract
In recent decades, survival of children with complex congenital heart disease has improved considerably. Specifically, children with a variety of congenital heart defects resulting in ‘single ventricle’ physiology can now undergo palliative surgery that allows survival beyond the neonatal period, and in many cases into adulthood, despite having a single functional ventricular pumping chamber supplying both the pulmonary and systemic circulation. Our growing understanding of the functionally univentricular heart has resulted in freedom from Fontan failure of >50% at 25 years post-Fontan. Yet there is still a fair amount of knowledge to be gained, specifically as it relates to the pulmonary circulation in this group of patients. Knowledge gaps relate not only to the pulmonary circulation after Fontan operation, but also at each stage of the single ventricle surgical palliation, including the native physiology prior to any intervention. The pulmonary circulation is affected by multiple issues related to the single ventricle, including specific details of the anatomy unique to each patient, any intervention(s) undertaken, and potential complications such as aortopulmonary collaterals, protein losing enteropathy, plastic bronchitis, venovenous collaterals, pulmonary arteriovenous fistulae, ventricular dysfunction, pulmonary venous stenosis, and more. This chapter will review the current knowledge with regard to the pulmonary circulation in the single ventricle patient, primarily after the Fontan operation. Additionally, it is our hope to help the practitioner assess the pulmonary circulation in the single ventricle patient; we will also discuss the evidence behind and approach to treatment strategies in order to optimize the pulmonary circulation in this complex group of patients.
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