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Batra AS, Silka MJ, Borquez A, Cuneo B, Dechert B, Jaeggi E, Kannankeril PJ, Tabulov C, Tisdale JE, Wolfe D. Pharmacological Management of Cardiac Arrhythmias in the Fetal and Neonatal Periods: A Scientific Statement From the American Heart Association: Endorsed by the Pediatric & Congenital Electrophysiology Society (PACES). Circulation 2024; 149:e937-e952. [PMID: 38314551 DOI: 10.1161/cir.0000000000001206] [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: 02/06/2024]
Abstract
Disorders of the cardiac rhythm may occur in both the fetus and neonate. Because of the immature myocardium, the hemodynamic consequences of either bradyarrhythmias or tachyarrhythmias may be far more significant than in mature physiological states. Treatment options are limited in the fetus and neonate because of limited vascular access, patient size, and the significant risk/benefit ratio of any intervention. In addition, exposure of the fetus or neonate to either persistent arrhythmias or antiarrhythmic medications may have yet-to-be-determined long-term developmental consequences. This scientific statement discusses the mechanism of arrhythmias, pharmacological treatment options, and distinct aspects of pharmacokinetics for the fetus and neonate. From the available current data, subjects of apparent consistency/consensus are presented, as well as future directions for research in terms of aspects of care for which evidence has not been established.
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Marx M, Gass M, Michel-Behnke I. Generationenübergreifende Betreuung von Patienten mit tachykarden Rhythmusstörungen. Monatsschr Kinderheilkd 2022; 170:870-882. [PMID: 36105264 PMCID: PMC9461413 DOI: 10.1007/s00112-022-01591-9] [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] [Accepted: 08/08/2022] [Indexed: 11/26/2022]
Abstract
Die Versorgung von Patienten mit Rhythmusstörungen hat sich in den letzten Jahrzehnten von einer rein konservativ medikamentösen Therapie zu einer echten kurativen Therapie mit Beseitigung des arryhthmogenen Substrats durch technisch immer ausgereiftere Möglichkeiten im Sinn der elektrophysiologische Untersuchung (EPU) und Ablation entwickelt. Parallel dazu haben sich in pädiatrisch-kardiologischen Zentren rhythmologische Spezialambulanzen zur Betreuung von Patienten mit Ionenkanalerkrankungen etabliert. Deren Aufgabe besteht in der generationenübergreifenden Betreuung von ganzen Familien, mit dem Ziel, präventiv, durch entsprechende Beratung und Führung, maligne Rhythmusstörungen primär zu verhindern.
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Affiliation(s)
- Manfred Marx
- Klinische Abteilung für Pädiatrische Kardiologie, Universitätsklinik für Kinder- und Jugendheilkunde, Medizinische Universität Wien, Währinger Gürtel 18–20, 1090 Wien, Österreich
| | - Matthias Gass
- Klinische Abteilung für Pädiatrische Kardiologie, Universitätsklinik für Kinder- und Jugendheilkunde, Medizinische Universität Wien, Währinger Gürtel 18–20, 1090 Wien, Österreich
- Pädiatrische Kardiologie, Universitäts-Kinderklinik Zürich, Zürich, Schweiz
| | - Ina Michel-Behnke
- Klinische Abteilung für Pädiatrische Kardiologie, Universitätsklinik für Kinder- und Jugendheilkunde, Medizinische Universität Wien, Währinger Gürtel 18–20, 1090 Wien, Österreich
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Abstract
PURPOSE OF REVIEW Amiodarone-induced thyroid dysfunction is well established. The present review discusses recent literature related to the effects of amiodarone on the thyroid gland and thyroid function in pediatrics. RECENT FINDINGS Current guidelines in adults treated with amiodarone recommend baseline thyroid function testing followed by initiation of thyroid hormone monitoring after 3 months on therapy. Two retrospective studies to evaluate amiodarone-induced thyroid dysfunction in children and young adults reveal thyroid dysfunction as soon as 2 weeks after amiodarone initiation with a greater percentage of pediatric patients developing amiodarone-induced hypothyroidism rather than thyrotoxicosis. Although additional studies are needed to determine if AIH is associated with negative impact on growth and neurocognitive development, what is clear is that in both adults and pediatrics, there is low compliance with recommended side effect-monitoring guidelines. SUMMARY Pediatric patients are at similarly high risk to develop amiodarone-induced thyroid dysfunction as are adults. It is hoped that through improved education of providers and patients further research into the incidence, the potential risks of amiodarone therapy and the potential benefits of thyroid hormone replacement therapy in patients with AIH will be investigated and reported.
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Affiliation(s)
- Brett Barrett
- Division of Pediatric Endocrinology, Advocate Children's Hospital, Oak Lawn, Illinois
| | - Andrew J Bauer
- Division of Pediatric Endocrinology and Diabetes, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
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Brown ML, Quinonez LG, Staffa SJ, DiNardo JA, Wassner AJ. Relationship of Preoperative Thyroid Dysfunction to Clinical Outcomes in Pediatric Cardiac Surgery. J Clin Endocrinol Metab 2021; 106:e2129-e2136. [PMID: 33492396 DOI: 10.1210/clinem/dgab040] [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: 12/01/2020] [Indexed: 11/19/2022]
Abstract
CONTEXT Thyroid function may be assessed in children before cardiac surgery because of concerns that hypothyroidism or thyrotoxicosis might adversely affect cardiac function perioperatively. However, the relationship between preoperative thyroid dysfunction and surgical outcomes is unknown. OBJECTIVE Determine the relationship between preoperative thyroid dysfunction and outcomes of pediatric cardiac surgery. METHODS Retrospective cohort study (January 2005 to July 2019). SETTING Academic pediatric hospital. PATIENTS All patients <19 years old who underwent cardiac surgery with cardiopulmonary bypass and had thyrotropin (TSH) measured within 14 days preoperatively. Exclusion criteria included neonates (≤30 days), preoperative extracorporeal life support, salvage operations, or transplantation procedures. MAIN OUTCOME MEASURES Subjects were stratified by preoperative TSH concentration (mIU/L): low (<0.5), normal (0.5-5), mildly high (5.01-10), or moderately high (>10). Outcomes were compared among subjects with normal TSH (control) and each group with abnormal TSH concentrations. The primary outcome was 30-day mortality. Secondary outcomes included time to extubation, intensive care unit and hospital length of stay, and operative complications. RESULTS Among 592 patients analyzed, preoperative TSH was low in 15 (2.5%), normal in 347 (58.6%), mildly high in 177 (29.9%), and moderately high in 53 (9.0%). Free thyroxine was measured in 77.4% of patients and was low in 0 to 4.4% of subjects, with no differences among TSH groups. Thirty-day mortality was similar among TSH groups. There were no differences in any secondary outcome between patients with abnormal TSH and patients with normal TSH. CONCLUSION Preoperative mild to moderate subclinical hypothyroidism was not associated with adverse postoperative outcomes in children undergoing cardiopulmonary bypass procedures.
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Affiliation(s)
- Morgan L Brown
- Department of Anesthesiology, Critical Care, and Pain Medicine, Boston, MA, USA
| | | | - Steven J Staffa
- Department of Anesthesiology, Critical Care, and Pain Medicine, Boston, MA, USA
| | - James A DiNardo
- Department of Anesthesiology, Critical Care, and Pain Medicine, Boston, MA, USA
| | - Ari J Wassner
- Division of Endocrinology, Boston Children's Hospital, Boston, MA, USA
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Capponi G, Belli G, Giovannini M, Remaschi G, Brambilla A, Vannuccini F, Favilli S, Porcedda G, De Simone L. Supraventricular tachycardias in the first year of life: what is the best pharmacological treatment? 24 years of experience in a single centre. BMC Cardiovasc Disord 2021; 21:137. [PMID: 33722203 PMCID: PMC7958399 DOI: 10.1186/s12872-020-01843-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 12/27/2020] [Indexed: 11/22/2022] Open
Abstract
Background Supraventricular tachycardias (SVTs) are common in the first year of life and may be life-threatening. Acute cardioversion is usually effective, with both pharmacological and non-pharmacological procedures. However, as yet no international consensus exists concerning the best drug required for a stable conversion to sinus rhythm (maintenance treatment). Our study intends to describe the experience of a single centre with maintenance drug treatment of both re-entry and automatic SVTs in the first year of life. Methods From March 1995 to April 2019, 55 patients under one year of age with SVT were observed in our Centre. The SVTs were divided into two groups: 45 re-entry and 10 automatic tachycardias. As regards maintenance therapy, in re-entry tachycardias, we chose to start with oral flecainide and in case of relapses switched to combined treatment with beta-blockers or digoxin. In automatic tachycardias we first administered a beta-blocker, later combined with flecainide or amiodarone when ineffective. Results The patients’ median follow-up time was 35 months. In re-entry tachycardias, flecainide was effective as monotherapy in 23/45 patients (51.1%) and in 20/45 patients (44.4%) in combination with nadolol, sotalol or digoxin (overall 95.5%). In automatic tachycardias, a beta-blocker alone was effective in 3/10 patients (30.0%), however, the best results were obtained when combined with flecainide: overall 9/10 (90%). Conclusions In this retrospective study on pharmacological treatment of SVTs under 1 year of age the combination of flecainide and beta-blockers was highly effective in long-term maintenance of sinus rhythm in both re-entry and automatic tachycardias.
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Affiliation(s)
- Guglielmo Capponi
- Department of Health Sciences, Post-Graduate School of Paediatrics, Anna Meyer Children's University Hospital, Florence, Italy
| | - Gilda Belli
- Department of Health Sciences, Post-Graduate School of Paediatrics, Anna Meyer Children's University Hospital, Florence, Italy
| | - Mattia Giovannini
- Department of Health Sciences, Post-Graduate School of Paediatrics, Anna Meyer Children's University Hospital, Florence, Italy
| | - Giulia Remaschi
- Neonatology Department and Neonatal Intensive Care Unit, Careggi University Hospital, Florence, Italy
| | - Alice Brambilla
- Cardiology Unit, Anna Meyer Children's University Hospital, Viale Gaetano Pieraccini 24, 50139, Florence, Italy
| | - Francesca Vannuccini
- Cardiology Unit, Anna Meyer Children's University Hospital, Viale Gaetano Pieraccini 24, 50139, Florence, Italy
| | - Silvia Favilli
- Cardiology Unit, Anna Meyer Children's University Hospital, Viale Gaetano Pieraccini 24, 50139, Florence, Italy
| | - Giulio Porcedda
- Cardiology Unit, Anna Meyer Children's University Hospital, Viale Gaetano Pieraccini 24, 50139, Florence, Italy
| | - Luciano De Simone
- Cardiology Unit, Anna Meyer Children's University Hospital, Viale Gaetano Pieraccini 24, 50139, Florence, Italy.
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Abstract
PURPOSE OF REVIEW Amiodarone-induced thyroid dysfunction is well established and commonly encountered but is associated with several diagnostic and management challenges. The present review discusses recent evidence published related to the effects of amiodarone on the thyroid gland and thyroid function. RECENT FINDINGS Retrospective studies to evaluate amiodarone-induced thyroid dysfunction in children show the occurrence of potential clinically significant changes within 2 weeks of amiodarone initiation that may not be detected if standard adult guidelines for thyroid hormone monitoring are followed. A small study evaluating beta-glucuronidase activity in amiodarone-induced thyrotoxicosis (AIT) demonstrated higher levels in patients with AIT type 2 compared to type 1. New data have suggested the incidence of agranulocytosis may be higher in patients on thionamides with AIT compared to hyperthyroidism because of other causes. In a small study, investigators demonstrated the use of a combination of intravenous and oral steroids to treat refractory AIT which needs to be evaluated in further controlled trials. Finally, recent data demonstrated a possible mortality benefit of surgery over medical therapy for AIT in patients with moderate to severe reduction in left ventricular ejection fraction. SUMMARY Recent research regarding the prevalence, diagnosis, and management of amiodarone-induced thyroid dysfunction were reviewed.
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Affiliation(s)
- Poorani N Goundan
- Section of Endocrinology, Diabetes and Nutrition, Boston University School of Medicine, Boston Medical Center, Boston, Massachusetts, USA
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Bauer AJ, Wassner AJ. Thyroid hormone therapy in congenital hypothyroidism and pediatric hypothyroidism. Endocrine 2019; 66:51-62. [PMID: 31350727 DOI: 10.1007/s12020-019-02024-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 07/17/2019] [Indexed: 12/11/2022]
Abstract
The evaluation and management of hypothyroidism in children are similar to adults, but there are important differences based on the dependence on normal thyroid function for neurocognitive and physical development. In the pediatric population, hypothyroidism is frequently categorized as congenital or acquired hypothyroidism, depending on the age of presentation and the underlying etiology. The evaluation and management of children and adolescents with hypothyroidism are determined by the etiology as well as by the age at diagnosis, severity of the hypothyroidism, and the response to thyroid hormone replacement therapy. Children and adolescents require higher weight-based doses for thyroid hormone replacement than do adults, likely due to a shorter half-life of thyroxine (T4) and triiodothyronine (T3) in children, but weight-based dose requirements decrease as the child advances into adulthood. Multiple gaps in knowledge remains regarding how to optimize the treatment of hypothyroidism in pediatric patients, including (but not limited to) the selection of patients with subclinical hypothyroidism for treatment, and the potential benefit of combined LT3/LT4 therapy for patients with persistent symptoms and/or low T3 on LT4 monotherapy. The life-long impact on growth and development, and potentially on long-term cardiovascular and psychosocial health, are significant and highlight the importance of future prospective studies in pediatric patients to explore these areas of uncertainty.
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Affiliation(s)
- Andrew J Bauer
- The Thyroid Center, Division of Endocrinology and Diabetes, The Children's Hospital of Philadelphia, The Perelman School of Medicine, The University of Pennsylvania, 3500 Civic Center Boulevard, Buerger Center, 12-149, Philadelphia, PA, 19104, USA.
| | - Ari J Wassner
- Thyroid Program, Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, 333 Longwood Avenue, 2nd floor, Boston, MA, 02115, USA
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Oliveira S, Marques B, Laranjo S, Lopes L. Amiodarone-induced thyrotoxicosis in a pediatric patient: A rare and demanding clinical case. Pediatr Rep 2019; 11:8166. [PMID: 31579213 PMCID: PMC6769358 DOI: 10.4081/pr.2019.8166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 07/31/2019] [Indexed: 11/22/2022] Open
Abstract
Thyroid dysfunction is one of the most common adverse effects of amiodarone therapy, ranging from subclinical changes to overt clinical thyrotoxicosis (AIT) and/or hypothyroidism. Due to its heterogeneity, AIT lasts as a defiant entity, leading to a thorny treatment course, particularly in pediatrics. AIT can be classified as either type 1, type 2 or mixed form based on its pathophysiology. Differentiating between the main AIT subtypes is quite relevant, since there is specific treatment for both, however, this distinction may be difficult in clinical practice. We describe a rare case of AIT in a pediatric patient, with an uncommon congenital cardiac malformation, that started amiodarone therapy due to paroxysmal supraventricular tachycardia. AIT was reported 26 months after drug onset, with a sudden and explosive emerging. This case highlights the current AIT management challenges on the highdemanding pediatric field pursuing, ultimately, an enhanced patient´s care.
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Affiliation(s)
| | - Bernardo Marques
- Unit of Pediatric Endocrinology, Centro Hospitalar de Lisboa Central, Lisbon.,Department of Endocrinology, Instituto Português de Oncologia de Coimbra Francisco Gentil, Coimbra
| | - Sérgio Laranjo
- Department of Pediatric Cardiology, Centro Hospitalar de Lisboa Central, Lisbon, Portugal
| | - Lurdes Lopes
- Unit of Pediatric Endocrinology, Centro Hospitalar de Lisboa Central, Lisbon
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