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DelRosso LM, Picchietti DL, Sharon D, Spruyt K, Owens JA, Walters AS, Zucconi M, Ferri R. Periodic limb movement disorder in children: A systematic review. Sleep Med Rev 2024; 76:101935. [PMID: 38652932 DOI: 10.1016/j.smrv.2024.101935] [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: 01/13/2024] [Revised: 03/09/2024] [Accepted: 04/07/2024] [Indexed: 04/25/2024]
Abstract
This systematic review evaluates the scientific literature on pediatric periodic limb movement disorder (PLMD), adhering to PRISMA guidelines and utilizing PICOS criteria. The search across PubMed, EMBASE, and Scopus yielded 331 articles, with 17 meeting inclusion criteria. Diagnostic criteria evolved, with polysomnography and PLMS index ≥5 required since 2003. Also, PLMD diagnosis mandates clinical consequences like insomnia, hypersomnia, and fatigue, excluding comorbidities causing sleep disruption. Prevalence in children is low (0.3%), emphasizing the need for meticulous investigation. Comorbidities, particularly the bidirectional relationship with ADHD, were explored. Challenges in diagnosis and understanding arise from overlapping conditions such as sleep disordered breathing, psychotropic medication, and criteria non-adherence. Despite generally good study quality, weaknesses include sample size justification and biases. The periodic leg movement index shows high sensitivity but low specificity, underscoring strict diagnostic criteria adherence. Diverse metrics for symptoms necessitate standardized approaches. Family history of RLS in children with PLMD suggests unexplored aspects. Treatment, mainly iron supplementation, lacks standardized assessment metrics. The review emphasizes diagnostic and treatment challenges, recommending unbiased studies with precise techniques. Comprehensive research, quantifying PLMS and objectively assessing sleep parameters, is crucial for advancing understanding in pediatric PLMD. PROSPERO REGISTRATION NUMBER: CRD42021251406.
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Affiliation(s)
| | - Daniel L Picchietti
- University of Illinois School of Medicine, Carle Illinois College of Medicine, and Carle Health, Urbana, IL, USA.
| | - Denise Sharon
- Pomona Valley Hospital and Medical Center, Claremont, CA, USA.
| | - Karen Spruyt
- Université de Paris, NeuroDiderot, INSERM, Paris, 75019, France.
| | - Judith A Owens
- Division of Neurology, Boston Children's Hospital, Harvard Medical School, Waltham, MA, USA.
| | - Arthur S Walters
- Division of Sleep Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA.
| | - Marco Zucconi
- Sleep Disorders Center, Department of Neurology, Scientific Institute and University Ospedale San Raffaele, Vita-Salute University, Institute and Ospedale San Raffaele, Milan, Italy.
| | - Raffaele Ferri
- Sleep Research Centre, Oasi Research Institute - IRCCS, Troina, Italy.
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2
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Cohen CT, Powers JM. Nutritional Strategies for Managing Iron Deficiency in Adolescents: Approaches to a Challenging but Common Problem. Adv Nutr 2024; 15:100215. [PMID: 38556251 PMCID: PMC11070695 DOI: 10.1016/j.advnut.2024.100215] [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: 01/26/2024] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/02/2024] Open
Abstract
Iron deficiency (ID) is a common and challenging problem in adolescence. In order to prevent, recognize, and treat ID in this age range, it is critical to understand the recommended daily intake of iron in relation to an adolescent's activity, dietary habits, and basal iron losses. Adolescents following vegetarian or vegan diets exclusively rely on plant-based, nonheme iron, which has decreased bioavailability compared with heme iron and requires increased total iron intake. Individuals with disordered eating habits, excessive menstrual blood loss, and certain chronic health conditions (including inflammatory bowel disease and heart failure) are at high risk of ID and the development of symptomatic iron deficiency anemia (IDA). Adolescent athletes and those with sleep and movement disorders may also be more sensitive to changes in iron status. Iron deficiency is typically treated with oral iron supplementation. To maximize iron absorption, oral iron should be administered no more than once daily, ideally in the morning, while avoiding foods and drinks that inhibit iron absorption. Oral iron therapy should be provided for ≥3 mo in the setting of ID to reach a ferritin of 20 ng/mL before discontinuation. Intravenous iron is being increasingly used in this population and has demonstrated efficacy and safety in adolescents. It should be considered in those with persistent ID despite a course of oral iron, severe and/or symptomatic IDA, and chronic inflammatory conditions characterized by decreased gastrointestinal iron absorption.
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Affiliation(s)
- Clay T Cohen
- Division of Hematology/Oncology, Department of Pediatrics, Baylor College of Medicine and Texas Children's Cancer and Hematology Center, Texas Children's Hospital, Houston, TX, United States
| | - Jacquelyn M Powers
- Division of Hematology/Oncology, Department of Pediatrics, Baylor College of Medicine and Texas Children's Cancer and Hematology Center, Texas Children's Hospital, Houston, TX, United States.
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3
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DelRosso LM, Mogavero MP, Baroni A, Bruni O, Ferri R. Restless Legs Syndrome in Children and Adolescents. Psychiatr Clin North Am 2024; 47:147-161. [PMID: 38302203 DOI: 10.1016/j.psc.2023.06.010] [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: 02/03/2024]
Abstract
Children with psychiatric comorbidities frequently are referred for evaluation of sleep complaints. Common sleep symptoms can include difficulty falling asleep, frequent nocturnal awakening, restless sleep, and symptoms of restless legs syndrome (RLS). The understanding of the sleep condition in relation to the psychiatric comorbidity often is a challenge to the physician and often sleep disorders remain undiagnosed, untreated, or undertreated. Restless legs syndrome has been associated with psychiatric comorbidities and with certain medications, such as antidepressants, antihistamines, and antipsychotics. This article reviews the presentation of RLS and restless sleep, the association with psychiatric comorbidities, and treatment options.
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Affiliation(s)
- Lourdes M DelRosso
- Department of Internal Medicine, University of California San Francisco, Fresno, CA 93721, USA
| | - Maria Paola Mogavero
- Vita-Salute San Raffaele University, Via Olgettina, 58, 20132 Milan, Italy; San Raffaele Scientific Institute, Division of Neuroscience, Sleep Disorders Center, Via Stamira d'Ancona 20, 20127 Milan, Italy
| | - Argelinda Baroni
- Department of Child and Adolescent Psychiatry, NYU Grossman School of Medicine, One Park Avenue, 7th Floor, New York, NY 10016, USA
| | - Oliviero Bruni
- Department of Developmental and Social Psychology, Sapienza University, Via dei Marsi 78, 00185 Rome, Italy
| | - Raffaele Ferri
- Sleep Research Centre, Oasi Research Institute - IRCCS, Via C. Ruggero 73, Troina 94018, Italy.
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DelRosso LM, Mogavero MP, Bruni O, Ferri R. Restless Legs Syndrome and Restless Sleep Disorder in Children. Sleep Med Clin 2023; 18:201-212. [PMID: 37120162 DOI: 10.1016/j.jsmc.2023.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Restless legs syndrome (RLS) affects 2% of children presenting with symptoms of insomnia, restless sleep, decreased quality of life, and effects on cognition and behavior. The International RLS Study Group and the American Academy of Sleep Medicine have published guidelines for the diagnosis and treatment of RLS in children. Restless sleep disorder has been recently identified in children and presents with frequent movements during sleep and daytime symptoms with polysomnography findings of at least 5 large muscle movements at night. Treatment options for both disorders include iron supplementation, either oral or intravenous with improvement in nighttime and daytime symptoms.
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Affiliation(s)
- Lourdes M DelRosso
- University of California San Francisco, Fresno, USA; University Sleep and Pulmonary Associates, 6733 North Willow Avenue, Unit 107, Fresno, CA 93710, USA.
| | - Maria Paola Mogavero
- Institute of Molecular Bioimaging and Physiology, National Research Council, Milan, Italy; Division of Neuroscience, Sleep Disorders Center, San Raffaele Scientific Institute, Milan, Italy; Centro di Medicina Del Sonno, IRCCS Ospedale San Raffaele, Turro, Via Stamira D'Ancona, 20, Milano 20127, Italy
| | - Oliviero Bruni
- Department of Social and Developmental Psychology, Sapienza University, Via dei Marsi 78, Rome 00185, Italy
| | - Raffaele Ferri
- Department of Neurology I.C., Sleep Research Centre, Oasi Research Institute - IRCCS, Via C Ruggero 73, Troina 94018, Italy
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Innocenti A, Lentini G, Rapacchietta S, Cinnirella P, Elia M, Ferri R, Bruni O. The Role of Supplements and Over-the-Counter Products to Improve Sleep in Children: A Systematic Review. Int J Mol Sci 2023; 24:ijms24097821. [PMID: 37175525 PMCID: PMC10178725 DOI: 10.3390/ijms24097821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 04/18/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023] Open
Abstract
The sleep-wake cycle is a complex multifactorial process involving several neurotransmitters, including acetylcholine, norepinephrine, serotonin, histamine, dopamine, orexin and GABA, that can be, in turn, regulated by different nutrients involved in their metabolic pathways. Although good sleep quality in children has been proven to be a key factor for optimal cognitive, physical and psychological development, a significant and ever-increasing percentage of the pediatric population suffers from sleep disorders. In children, behavioral interventions along with supplements are recommended as the first line treatment. This systematic review was conducted, according to the PRISMA guidelines, with the purpose of assessing the principal nutrients involved in the pathways of sleep-regulating neurotransmitters in children and adolescents. Our focus was the utilization of over the counter (OTC) products, specifically iron, hydroxytryptophan, theanine and antihistamines in the management of different pediatric sleep disorders with the intention of providing a practical guide for the clinician.
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Affiliation(s)
- Alice Innocenti
- Child Neurology and Psychiatry Unit, Department of Human Neurosciences, Sapienza University, 00185 Rome, Italy
| | - Giuliana Lentini
- Child Neurology and Psychiatry Unit, Department of Human Neurosciences, Sapienza University, 00185 Rome, Italy
| | - Serena Rapacchietta
- Child Neurology and Psychiatry Unit, Department of Human Neurosciences, Sapienza University, 00185 Rome, Italy
| | - Paola Cinnirella
- Child Neurology and Psychiatry Unit, Department of Human Neurosciences, Sapienza University, 00185 Rome, Italy
| | | | | | - Oliviero Bruni
- Department of Developmental and Social Psychology, Sapienza University, 00185 Rome, Italy
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Heidbreder A, Trenkwalder C, Bachmann CG, Bartl M, Fulda S, Habersack L, Maihöfner C, Mathis J, Muntean L, Schneider B, Stefani A, Paulus J, Young P. Restless Legs Syndrom. SOMNOLOGIE 2023. [DOI: 10.1007/s11818-023-00399-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Ingram DG, Al-Shawwa B, DelRosso LM, Sharma M. Intravenous iron therapy in the pediatric sleep clinic: a single institution experience. J Clin Sleep Med 2022; 18:2545-2551. [PMID: 35912699 PMCID: PMC9622985 DOI: 10.5664/jcsm.10152] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Initial reports of intravenous (IV) iron administration have been promising for children with restless legs syndrome, periodic limb movement disorder, and restless sleep disorder. The aim of the current study was to evaluate further the clinical response to IV iron supplementation in children seen in a pediatric sleep clinic. METHODS We performed a retrospective chart review of children cared for in a single pediatric sleep clinic who also underwent IV iron infusion. Pre and post IV data regarding their sleep symptoms and ferritin levels were abstracted. RESULTS Overall, 63 pediatric sleep patients underwent IV iron infusion, mostly with ferric carboxymaltose (n = 60), for restless legs syndrome (n = 30), periodic limb movement disorder (n = 22), and restless sleep disorder (n = 17). Of the 59 patients with clinical follow-up, 39 (73%) noted improvement in at least 1 symptom, and 14 (26%) did not notice improvement or noticed worsening symptoms. Of the 59 patients with preinfusion and postinfusion labs, the average ferritin level increased from 21.7 (13.3) to 147.9 (120.9) μg/L, P < .001. Comparing patients who experienced clinical improvement vs those who did not, there were no statistically significant differences in change in ferritin levels (P = .278), sex (P = .452), or age (P = .391). Ferritin change with infusion according to diagnostic subgroups (restless legs syndrome/periodic limb movement disorder/restless sleep disorder) was examined, and no significant differences were noted (F(2,56) = 0.852, P = .432). In terms of immediate adverse reactions to the IV infusion, 7 (11%) experienced at least 1 side effect, with the most common being behavior change (n = 6) or gastrointestinal discomfort (n = 4); no episodes of anaphylaxis or extravasation were noted. CONCLUSIONS These data provide additional support for the efficacy and safety of IV iron for pediatric restless legs syndrome, periodic limb movement disorder, and restless sleep disorder recalcitrant to oral iron. CITATION Ingram DG, Al-Shawwa B, DelRosso LM, Sharma M. Intravenous iron therapy in the pediatric sleep clinic: a single institution experience. J Clin Sleep Med. 2022;18(11):2545-2551.
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Affiliation(s)
- David G. Ingram
- Division of Pulmonary and Sleep Medicine, Children’s Mercy Hospital, Kansas City, Missouri
| | - Baha Al-Shawwa
- Division of Pulmonary and Sleep Medicine, Children’s Mercy Hospital, Kansas City, Missouri
| | - Lourdes M. DelRosso
- Division of Pulmonary and Sleep Medicine, Seattle Children’s Hospital, Seattle, Washington
| | - Mukta Sharma
- Division of Hematology, Children’s Mercy Hospital, Kansas City, Missouri
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8
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Nikkilä A, Lohi O, Nieminen N, Csonka P. Trends in ferritin measurements in children and adolescents: A Finnish 9-year observational study. Acta Paediatr 2022; 111:1933-1940. [PMID: 35708115 PMCID: PMC9541652 DOI: 10.1111/apa.16454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/03/2022] [Accepted: 06/14/2022] [Indexed: 01/01/2023]
Abstract
AIM A lack of stored iron, indicated by low serum ferritin, has been associated with various clinical symptoms. There are no longitudinal data on the frequency of ferritin measurements in children and adolescents. METHODS A total of 2834 children aged <18 years with serum ferritin and other anaemia-related blood parameters taken during an outpatient visit between 2012 and 2019 were investigated. Patients with acute infections were excluded. Nationwide temporal and regional variations and correlations with public information searches through Google were analysed. RESULTS A significant increase in the frequency of ferritin measurements was seen starting in 2018, with a 47-fold rise in 2019 compared to 2012. A simultaneous escalation in Google Search activity was seen. Deficiency of stored iron was relatively common: 21.6% of children with normal haemoglobin and 14.9% of non-anaemic children with normal red cell indices exhibited ferritin levels below 15 μg/L. CONCLUSION Ferritin measurement has increased greatly among children and adolescents. Our results suggest that public interest and popular trends can significantly influence health care practices. This calls for further investigation into the causes and consequences of such a phenomenon. Prospective randomised intervention studies are needed to evaluate the utility of iron supplementation in patients with low iron storage levels.
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Affiliation(s)
- Atte Nikkilä
- Tampere Center for Child, Adolescent and Maternal Health ResearchTampere UniversityTampereFinland
| | - Olli Lohi
- Tampere Center for Child, Adolescent and Maternal Health ResearchTampere UniversityTampereFinland
| | | | - Péter Csonka
- Tampere Center for Child, Adolescent and Maternal Health ResearchTampere UniversityTampereFinland
- Terveystalo HealthcareTampereFinland
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9
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Silvestri R, Ipsiroglu OS. Behavioral sleep medicine-The need for harmonization of clinical best practice outcome measures in children and adolescents with intellectual or developmental disabilities and restless sleep. Front Psychiatry 2022; 13:1003019. [PMID: 36226108 PMCID: PMC9548631 DOI: 10.3389/fpsyt.2022.1003019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 08/31/2022] [Indexed: 11/13/2022] Open
Abstract
In behavioral medicine, sleep disorders, insomnia in particular, may be considered comorbidities and precipitating factors to intellectual or developmental disabilities (IDD). Nevertheless, sleep alterations have often been neglected in favor of daytime features and symptoms, albeit simple behavioral nighttime observations may disclose hypermotor features that characterize restless sleep. The root of most hypermotor restlessness is linked to central iron deficiency. The latter is often exacerbated by vitamin D deficiency (VDD), which interferes with both dopaminergic and serotonergic mechanisms. In this way, an imbalance affecting daytime behavior and mood is created. Several sleep-related motor disorders such as bruxism, periodic and aperiodic leg movements, Restless Legs Syndrome (RLS), and Restless Sleep Disorder (RSD) are commonly seen in Attention Deficit Hyperactivity Disorder (ADHD) and Autism Spectrum Disorders (ASD). However, they are rarely diagnosed and often overlooked in affected children and adolescents. As a result, not only are these disorders not adequately addressed therapeutically, but their symptoms may be worsened by the side-effects of drugs used to contain disruptive daytime behavior, such as antipsychotics and antidepressants. In children with IDDs, obesity, inactivity and metabolic effects of antipsychotics often lead to Sleep Disordered Breathing (SDB), which is currently understood as an inflammatory state leading to "hyperactive" lethargy and further alterations of the hypoxic chain and vitamin D levels. Endorsing simple routine blood tests, including inflammatory markers such as C-reactive protein, ferritin, transferrin, and vitamin D levels, may favorably complement caregiver observations and ambulatory sleep recordings, leading to a sleep disorder diagnosis and consequent therapy. In fact, the treatment of SDB, RLS, and RSD has been copiously demonstrated to favorably impact vigilance, behavior, social competence, and academic skills in healthy and, to a greater extent, in IDD children. Thus, consulting and deliberating the root causes of functional and categorical diagnoses within a clinical framework may engender a more precise diagnosis and further benefit pediatric daytime and nighttime management of hyperactive behaviors.
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Affiliation(s)
- Rosalia Silvestri
- Department of Clinical and Experimental Medicine, Sleep Medicine Center, University of Messina, Azienda Ospedaliera Universitaria “Gaetano Martino”, Messina, Italy
| | - Osman S. Ipsiroglu
- Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- H-Behaviours Research Lab, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
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10
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Clinical efficacy and safety of intravenous ferric carboxymaltose treatment of pediatric restless legs syndrome and periodic limb movement disorder. Sleep Med 2021; 87:114-118. [PMID: 34562823 DOI: 10.1016/j.sleep.2021.08.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/23/2021] [Accepted: 08/29/2021] [Indexed: 11/20/2022]
Abstract
BACKGROUND Iron supplementation is the most commonly considered treatment option for children with restless legs syndrome (RLS) or periodic limb movement disorder (PLMD); however, there is a scarcity of evidence on the effectiveness of intravenous preparations. In this study, we evaluated the effectiveness and tolerability of intravenous ferric carboxymaltose (IV FCM) on clinical symptoms and iron indices in children with RLS or PLMD. METHODS This was a single-center retrospective data analysis. Children with a diagnosis of RLS or PLMD, who underwent a single infusion of IV FCM, were included. Clinical Global Impression (CGI) Scale scores, serum ferritin, and serum iron profile at baseline and after eight weeks post infusion were obtained. Adverse effects were assessed. RESULTS Thirty-nine children received IV FCM, 29 with RLS and 10 with PLMD. Pre-infusion CGI-Severity revealed moderate illness, with post-infusion CGI-Improvement between "very much improved" and "much improved". Ferritin increased from 14.6 μg/L±7.01 to 112.4 μg/L±65.86 (p < 0.00001), together with improvements in iron, total iron binding capacity, and transferrin levels from baseline to post-treatment. When compared to children with RLS, those with PLMD had a similar improvement in clinical symptoms and laboratory parameters. Seven subjects (14.3%) experienced one or two adverse events; all were mild. CONCLUSIONS Children with RLS and PLMD responded to IV iron supplementation with improvement in both clinical severity and laboratory parameters. Treatment was well tolerated. Although larger, randomized-controlled trials are needed, IV FCM appears to be a promising alternative to oral iron supplementation for the treatment of pediatric RLS or PLMD.
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11
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Silber MH, Buchfuhrer MJ, Earley CJ, Koo BB, Manconi M, Winkelman JW. The Management of Restless Legs Syndrome: An Updated Algorithm. Mayo Clin Proc 2021; 96:1921-1937. [PMID: 34218864 DOI: 10.1016/j.mayocp.2020.12.026] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 12/13/2020] [Accepted: 12/28/2020] [Indexed: 01/26/2023]
Abstract
Restless legs syndrome (RLS) is a common disorder. The population prevalence is 1.5% to 2.7% in a subgroup of patients having more severe RLS with symptoms occurring 2 or more times a week and causing at least moderate distress. It is important for primary care physicians to be familiar with the disorder and its management. Much has changed in the management of RLS since our previous revised algorithm was published in 2013. This updated algorithm was written by members of the Scientific and Medical Advisory Board of the RLS Foundation based on scientific evidence and expert opinion. A literature search was performed using PubMed identifying all articles on RLS from 2012 to 2020. The management of RLS is considered under the following headings: General Considerations; Intermittent RLS; Chronic Persistent RLS; Refractory RLS; Special Circumstances; and Alternative, Investigative, and Potential Future Therapies. Nonpharmacologic approaches, including mental alerting activities, avoidance of substances or medications that may exacerbate RLS, and oral and intravenous iron supplementation, are outlined. The choice of an alpha2-delta ligand as first-line therapy for chronic persistent RLS with dopamine agonists as a second-line option is explained. We discuss the available drugs, the factors determining which to use, and their adverse effects. We define refractory RLS and describe management approaches, including combination therapy and the use of high-potency opioids. Treatment of RLS in pregnancy and childhood is discussed.
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Affiliation(s)
- Michael H Silber
- Center for Sleep Medicine and Department of Neurology, Mayo Clinic College of Medicine and Science, Rochester, MN.
| | - Mark J Buchfuhrer
- Department of Psychiatry and Behavioral Sciences, Stanford School of Medicine, Stanford, CA
| | - Christopher J Earley
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Brian B Koo
- Department of Neurology, Yale University, New Haven, CT
| | - Mauro Manconi
- Sleep Medicine, Neurocenter of Southern Switzerland, Ospedale Civico, and Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland; Department of Neurology, University Hospital, Inselspital, Bern, Switzerland
| | - John W Winkelman
- Departments of Psychiatry and Neurology, Massachusetts General Hospital, Boston, MA; Harvard Medical School, Cambridge, MA
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12
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DelRosso LM, Picchietti DL, Ferri R. Comparison between oral ferrous sulfate and intravenous ferric carboxymaltose in children with restless sleep disorder. Sleep 2021; 44:5897018. [PMID: 32840615 DOI: 10.1093/sleep/zsaa155] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 07/20/2020] [Indexed: 12/12/2022] Open
Abstract
STUDY OBJECTIVES Recent work has identified clinical and polysomnographic features of a newly defined pediatric sleep disorder, restless sleep disorder (RSD). One of these features is low serum ferritin. In this retrospective, pilot study, we assess the response to iron supplementation. Children were given oral ferrous sulfate (FS) or intravenous ferric carboxymaltose (IV FCM). METHODS Children 5-18 years old with a diagnosis of RSD were evaluated clinically. Serum ferritin, iron profile, and video-polysomnography were obtained at baseline. Oral or IV iron supplementation was offered as part of routine care. Oral FS was one 325 mg tablet daily or 3 mg/kg/day liquid for 3 months. IV FCM was 15 mg/kg, up to 750 mg as a single infusion. Adverse effects were assessed. Ferritin and iron profile were checked after 2-3 months. Eight weeks after FCM, the phosphorus level was checked. Clinical Global Impression (CGI) scale was obtained pre- and posttreatment. RESULTS A total of 15 children received oral FS and 15 IV FCM. Baseline RSD severity, age, gender, or pretreatment lab values did not differ significantly between groups. CGI-improvement median score was "minimally improved" after oral FS and "much improved" after IV FCM (effect size 1.008, p < 0.023). All iron parameters were found to be significantly higher after intravenous iron treatment than oral iron, especially ferritin (effect size 3.743, p < 0.00003). Adverse effects: constipation, three with FS; noncompliance, one with FS; syncope, one with FCM infusion; and hypophosphatemia, zero post-FCM. CONCLUSIONS In this retrospective, clinical case series, RSD responded to iron supplementation with improvement in both clinical and laboratory parameters. The response was greater with IV FCM than oral FS.
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Affiliation(s)
| | - Daniel L Picchietti
- University of Illinois School of Medicine, Carle Illinois College of Medicine, and Carle Foundation Hospital, University of Illinois School of Medicine, Urbana, IL
| | - Raffaele Ferri
- Sleep Research Centre, Oasi Research Institute-IRCCS, Troina, Italy
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13
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Abstract
Early-onset restless legs syndrome has a relatively high prevalence in pediatrics, is highly familial, and is often preceded by a diagnosis of periodic limb movement disorder or childhood insomnia. Diagnostic criteria are derived but not equal to those of the adult syndrome and are adapted according to children's age and linguistic competence. Diagnosis requires parents or caregivers to participate; video-polysomnographic nocturnal recording, although not mandatory, may help confirm dubious cases. The syndrome severely impacts children's sleep and cognitive-behavioral abilities. Iron supplementation is currently the most used and viable therapeutic option.
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Affiliation(s)
- Rosalia Silvestri
- Department of Clinical and Experimental Medicine, Sleep Medicine Center, University of Messina, AOU G Martino, Pad. H, Via Consolare Valeria 1, Messina, Messina 98125, Italy.
| | - Lourdes M DelRosso
- Seattle Children's Hospital, OC.7.720 - Pulmonary, 4800 Sand Point Way Northeast, Seattle, WA 98105, USA
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14
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DelRosso LM, Mogavero MP, Baroni A, Bruni O, Ferri R. Restless Legs Syndrome in Children and Adolescents. Child Adolesc Psychiatr Clin N Am 2021; 30:143-157. [PMID: 33223058 DOI: 10.1016/j.chc.2020.08.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Children with psychiatric comorbidities frequently are referred for evaluation of sleep complaints. Common sleep symptoms can include difficulty falling asleep, frequent nocturnal awakening, restless sleep, and symptoms of restless legs syndrome (RLS). The understanding of the sleep condition in relation to the psychiatric comorbidity often is a challenge to the physician and often sleep disorders remain undiagnosed, untreated, or undertreated. Restless legs syndrome has been associated with psychiatric comorbidities and with certain medications, such as antidepressants, antihistamines, and antipsychotics. This article reviews the presentation of RLS and restless sleep, the association with psychiatric comorbidities, and treatment options.
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Affiliation(s)
- Lourdes M DelRosso
- Division of Pulmonary and Sleep Medicine, Seattle Children's Hospital, 4800 Sand Point Way, Northeast, Seattle, WA, USA
| | - Maria Paola Mogavero
- Istituti Clinici Scientifici Maugeri, IRCCS, Scientific Institute of Pavia, Via Salvatore Maugeri 4, Pavia 27100, Italy
| | - Argelinda Baroni
- Child Study Center, Hassenfeld Children's Hospital at NYU Langone, 430 E 34th St, New York, NY, USA
| | - Oliviero Bruni
- Department of Developmental and Social Psychology, Sapienza University, Via dei Marsi 78, 00185 Rome, Italy
| | - Raffaele Ferri
- Sleep Research Centre, Oasi Research Institute - IRCCS, Via C. Ruggero 73, Troina 94018, Italy.
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15
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Abstract
PURPOSE OF REVIEW The presentation of sleep issues in childhood differs from the presentation in adulthood and may be more subtle. Sleep issues may affect children differently than adults, and distinct treatment approaches are often used in children. RECENT FINDINGS Sodium oxybate was approved by the US Food and Drug Administration (FDA) in October 2018 for an expanded indication of treatment of sleepiness or cataplexy in patients with narcolepsy type 1 or narcolepsy type 2 aged 7 years or older, with side effect and safety profiles similar to those seen in adults. Restless sleep disorder is a recently proposed entity in which restless sleep, daytime sleepiness, and often iron deficiency are observed, but children do not meet the criteria for restless legs syndrome or periodic limb movement disorder. SUMMARY Children's sleep is discussed in this article, including normal sleep patterns and effects of insufficient sleep. Sleep disorders of childhood are reviewed, including insomnia, obstructive sleep apnea, restless legs syndrome, parasomnias, narcolepsy, and Kleine-Levin syndrome. Children with neurologic issues or neurodevelopmental disorders frequently have sleep disorders arising from an interaction of heterogeneous factors. Further attention to sleep may often be warranted through a polysomnogram or referral to a pediatric sleep specialist. Sleep disorders may cause indelible effects on children's cognitive functioning, general health, and well-being, and awareness of sleep disorders is imperative for neurologists who treat children.
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Leung W, Singh I, McWilliams S, Stockler S, Ipsiroglu OS. Iron deficiency and sleep – A scoping review. Sleep Med Rev 2020; 51:101274. [DOI: 10.1016/j.smrv.2020.101274] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 12/11/2019] [Accepted: 12/15/2019] [Indexed: 12/16/2022]
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17
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Mattiello V, Schmugge M, Hengartner H, von der Weid N, Renella R. Diagnosis and management of iron deficiency in children with or without anemia: consensus recommendations of the SPOG Pediatric Hematology Working Group. Eur J Pediatr 2020; 179:527-545. [PMID: 32020331 DOI: 10.1007/s00431-020-03597-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/22/2020] [Accepted: 01/27/2020] [Indexed: 11/26/2022]
Abstract
Iron deficiency is the most prevalent nutritional deficiency affecting children and adolescents worldwide. A consistent body of epidemiological data demonstrates an increased incidence of iron deficiency at three timepoints: in the neonatal period, in preschool children, and in adolescents, where it particularly affects females.Conclusion: This narrative review focuses on the most suggestive symptoms of iron deficiency in childhood, describes the diagnostic procedures in situations with or without anemia, and provides Swiss expert-based management recommendations for the pediatric context.What is Known:• Iron deficiency (ID) is one of the most common challenges faced by pediatricians.• Significant progress in the diagnosis and therapy of ID has been made over the last decade.What is New:• Our expert panel provides ID management recommendations based on the best available evidence.• They include strategies for ID diagnosis and therapy, both oral and intravenous.
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Affiliation(s)
- Veneranda Mattiello
- Department "Woman-Mother-Child and Adolescent", Pediatric Hematology-Oncology Unit, Division of Pediatrics, University Hospital of Geneva, Geneva, Switzerland
| | - Markus Schmugge
- Division of Pediatric Hematology, University Children's Hospital of Zurich, Zurich, Switzerland
| | - Heinz Hengartner
- Pediatric Hematology-Oncology Unit, Children's Hospital of Sankt Gallen, Sankt Gallen, Switzerland
| | - Nicolas von der Weid
- Pediatric Hematology-Oncology Department, University Children's Hospital and University of Basel, Basel, Switzerland
| | - Raffaele Renella
- Department "Woman-Mother-Child", Pediatric Hematology-Oncology Unit, Division of Pediatrics, Lausanne University Hospital and University of Lausanne, Vaudois, BH11, Rue du Bugnon 46, 1011, Lausanne, Switzerland.
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18
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DelRosso LM, Yi T, Chan JHM, Wrede JE, Lockhart CT, Ferri R. Determinants of ferritin response to oral iron supplementation in children with sleep movement disorders. Sleep 2020; 43:5575974. [PMID: 31563958 DOI: 10.1093/sleep/zsz234] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 08/18/2019] [Indexed: 12/29/2022] Open
Abstract
STUDY OBJECTIVES To identify children who respond to oral iron supplementation as evidenced by increased ferritin levels and to identify factors that correlate with improvement in ferritin levels in those who respond. METHODS A retrospective chart review of the PLMS/RLS/RSD database at Seattle Children's Hospital was carried out. Data collected included nocturnal polysomnography parameters, age, sex, initial and follow-up ferritin level and date of collection, and presence of restless legs syndrome (RLS), periodic limb movements of sleep (PLMS)/PLM disorder (PLMD), restless sleep disorder (RSD), obstructive sleep apnea (OSA), neurologic, psychiatric, neurodevelopmental, or medical comorbidity. Oral iron therapy was evaluated by side effects (none; constipation; bad taste/nausea), subjective outcome in symptoms (resolved, improved, no change), and adherence to therapy (poor, fair, good). RESULTS Seventy-seven children were included in this study of whom 42 were classified as responders (increase in ferritin of ≥10 µg/L) and 35 were nonresponders. Age and sex were not different between groups. Adherence was the only significant predictor of an increase in ferritin of ≥10 µg/L. Constipation was seen in 7.1% of responders vs. 45.8% of nonresponders. No change in symptoms was reported in 26.2% of responders vs. 71.4% in nonresponders. A significant correlation was found between treatment duration and ferritin level change in responders but not in nonresponders. CONCLUSIONS Side effects hinders adherence to oral iron supplementation in children. Responders to oral iron show improvement in ferritin levels and symptoms, while nonresponders show no improvement in ferritin levels despite a long-lasting treatment, at least in part of them.
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Affiliation(s)
- Lourdes M DelRosso
- Seattle Children's Hospital, Seattle, WA.,University of Washington, Seattle, WA
| | - Troy Yi
- University of Washington, Seattle, WA
| | | | - Joanna E Wrede
- Seattle Children's Hospital, Seattle, WA.,University of Washington, Seattle, WA
| | - Carey T Lockhart
- Seattle Children's Hospital, Seattle, WA.,University of Washington, Seattle, WA
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Al-Shawwa B, Ehsan Z, Perry GV, Ingram DG. Limb movements during sleep in children: effects of age, sex, and iron status in more than 1,000 patients referred to a pediatric sleep center. J Clin Sleep Med 2020; 16:49-54. [PMID: 31957651 DOI: 10.5664/jcsm.8120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Limb movements during sleep (LMS) and periodic limb movements during sleep (PLMS) have been shown to vary by age in children. In the current study, we examined this relationship in more detail in a large clinically referred sample adjusting for iron status and sex. METHODS Retrospective data analysis was done on a large pediatric population who underwent an overnight sleep study and had ferritin levels measured within 30 days of sleep study between May 2013 and October 2017 at pediatric sleep center. Patients with obstructive or central sleep apneas were excluded. RESULTS A total of 1,070 patients were included in the study, with 60% males. Younger age and male sex were associated with increased PLMS and LMS. In addition, there was an increase in PLMS and LMS during adolescence that subsided at a later age, independent of sex. These associations remained significant in models controlling for ferritin level. Ferritin level, in contrast, was not a significant predictor of PLMS or LMS when controlling for sex and age. CONCLUSIONS Age and sex may need to be considered when interpreting limb movement indices in pediatric sleep patients regardless of ferritin level.
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Affiliation(s)
- Baha Al-Shawwa
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Zarmina Ehsan
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Gayln V Perry
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - David G Ingram
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
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20
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Dye TJ, Gurbani N, Simakajornboon N. How does one choose the correct pharmacotherapy for a pediatric patient with restless legs syndrome and periodic limb movement disorder?: Expert Guidance. Expert Opin Pharmacother 2019; 20:1535-1538. [DOI: 10.1080/14656566.2019.1629418] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Thomas J. Dye
- Division of Pulmonary and sleep medicine, Cincinnati, OH, USA
- Division of neurology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Neepa Gurbani
- Division of Pulmonary and sleep medicine, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Narong Simakajornboon
- Division of Pulmonary and sleep medicine, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati School of Medicine, Cincinnati, OH, USA
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21
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Gurbani N, Dye TJ, Dougherty K, Jain S, Horn PS, Simakajornboon N. Improvement of Parasomnias After Treatment of Restless Leg Syndrome/ Periodic Limb Movement Disorder in Children. J Clin Sleep Med 2019; 15:743-748. [PMID: 31053208 DOI: 10.5664/jcsm.7766] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 02/06/2019] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Previous studies have shown that non-rapid eye movement (NREM) sleep parasomnias commonly coexist with restless legs syndrome (RLS) and periodic limb movement disorder (PLMD) in children, leading to speculation that RLS/PLMD may precipitate or worsen parasomnias. However, there are limited data about the effect of the treatment of RLS/PLMD on parasomnias in children. Hence, we performed this study to determine whether the treatment of RLS/PLMD with oral iron therapy is associated with improvement of parasomnias in children. METHODS A retrospective database was created for children with RLS/PLMD who were treated with iron therapy. These participants were followed for at least 1 year at Cincinnati Children's Hospital Medical Center. All participants had ferritin level testing and were treated with iron therapy. In addition, all participants underwent polysomnography before starting iron therapy for RLS/PLMD except for one participant who was already on iron but required a higher dose. Most participants underwent polysomnography after iron therapy. RESULTS A total of 226 participants were identified with the diagnosis of RLS/PLMD. Of these, 50 had parasomnias and 30 of them were treated with iron therapy. Of the 30 participants, RLS symptoms improved in 15 participants (50%) and resolution of parasomnias was noted in 12 participants (40%) participants after iron therapy. Repeat polysomnography after iron therapy was performed in 21 participants (70%). After iron therapy, there was a significant decrease in periodic limb movement index (17.2 ± 8.8 [before] versus 6.7 ± 7.3 [after] events/h, P < .001). In addition, there were significant decreases in PLMS (24.52 ± 9.42 [before] versus 7.50 ± 7.18 [after] events/h, P < .0001), PLMS-related arousals (4.71 ± 1.81 [before] versus 1.35 ± 1.43 [after] events/h, P < .0001), and total arousals (11.65 ± 5.49 [before] versus 8.94 ± 3.65 [after] events/h, P < .01) after iron therapy. CONCLUSIONS Parasomnias are common in our cohort of children with RLS/PLMD. Iron therapy was associated with a significant improvement in periodic limb movement index, RLS symptoms, and resolution of a significant proportion of NREM sleep parasomnias, suggesting that RLS/PLMD may precipitate NREM sleep parasomnia.
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Affiliation(s)
- Neepa Gurbani
- Division of Pulmonary and Sleep Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio
| | - Thomas J Dye
- Division of Pulmonary and Sleep Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio.,Division of Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Kyle Dougherty
- University of Cincinnati, College of Medicine, Cincinnati, Ohio
| | - Sejal Jain
- Department of Neurology and Pediatrics, Banner University Medical Center, Tucson, Arizona
| | - Paul S Horn
- Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio.,Division of Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Narong Simakajornboon
- Division of Pulmonary and Sleep Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio
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22
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Powers JM, O'Brien SH. How I approach iron deficiency with and without anemia. Pediatr Blood Cancer 2019; 66:e27544. [PMID: 30393941 DOI: 10.1002/pbc.27544] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 10/18/2018] [Accepted: 10/19/2018] [Indexed: 12/13/2022]
Abstract
Iron deficiency anemia remains a common referral to the pediatric hematology-oncology subspecialist. Improved understanding of iron homeostasis, including the effects of the regulatory hormone hepcidin, recent adult and pediatric clinical trial data, as well as the availability of safer formulations of intravenous iron, have resulted in additional considerations when making treatment recommendations in such patients. Young children and adolescent females remain the most commonly affected groups, but children with complex medical or chronic inflammatory conditions including comorbid gastrointestinal disorders also require special consideration.
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Affiliation(s)
- Jacquelyn M Powers
- Department of Pediatrics, Section of Hematology/Oncology, Baylor College of Medicine, Houston, Texas.,Texas Children's Hospital, Houston, Texas
| | - Sarah H O'Brien
- Division of Hematology/Oncology, Nationwide Children's Hospital, Columbus, Ohio.,Department of Pediatrics, The Ohio State University, Columbus, Ohio
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23
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DelRosso L, Bruni O. Treatment of pediatric restless legs syndrome. PHARMACOLOGY OF RESTLESS LEGS SYNDROME (RLS) 2019; 84:237-253. [DOI: 10.1016/bs.apha.2018.11.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Abstract
PURPOSE OF REVIEW Sleep-wake disorders occur in 10% to 28% of children and differ somewhat in pathophysiology and management from sleep-wake disorders in adults. This article discusses the diagnosis and management of key childhood sleep disorders. RECENT FINDINGS The role of sleep in memory consolidation and in the facilitation of learning has been increasingly recognized, even at the toddler stage. Cataplexy, a key feature of narcolepsy type 1, may be subtle in childhood and characterized by transient muscle weakness isolated to the face. Children with obstructive sleep apnea and restless legs syndrome display prominent neurobehavioral symptoms such as daytime inattentiveness and hyperactivity, so it is important to elicit a sleep history when these symptoms are encountered. Systemic iron deficiency occurs in about two-thirds of children with restless legs syndrome and is easily treatable. Parasomnias arising out of non-rapid eye movement (REM) sleep, such as confusional arousals and sleepwalking, may be difficult to distinguish from nocturnal seizures, and, in many cases, video-EEG polysomnography is required to differentiate between causes. SUMMARY Clinicians should routinely integrate the assessment of sleep-wake function into their practices of neurology and child neurology because of the opportunity to improve the quality of life of their patients.
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25
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ESPGHAN/ESPEN/ESPR/CSPEN guidelines on pediatric parenteral nutrition: Iron and trace minerals. Clin Nutr 2018; 37:2354-2359. [PMID: 30078716 DOI: 10.1016/j.clnu.2018.06.949] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 05/29/2018] [Indexed: 12/26/2022]
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27
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Abstract
Restless legs syndrome (RLS) and periodic limb movement disorder (PLMD) are under-recognized sleep disorders in children and adolescents. Several recent epidemiological studies have shown that RLS and PLMD are common in the pediatric population, and if left untreated, may lead to cardiovascular and neurocognitive consequences. Therefore, early diagnosis and intervention may help preventing long-term consequences. The management of RLS and PLMD in children involves both non-pharmacologic and pharmacologic approaches. Although there is emerging literature supporting medical therapy in children with RLS and PLMD, the overall experiences with these medications remain limited. Most children and adolescents with RLS and PLMD have low iron storage; therefore, iron therapy should be considered as the first line of treatment in children. Currently, there is no FDA-approved medication for RLS and PLMD in children. There is increasing evidence on the effectiveness of dopaminergic medications in children but the data are quite limited. Other medications such as α2δ-1 ligands, benzodiazepine, and clonidine are frequently used, but have not been adequately investigated in children. Further studies are needed to evaluate the safety and efficacy of pharmacologic therapy for RLS and PLMD in children.
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28
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Allen RP, Picchietti DL, Auerbach M, Cho YW, Connor JR, Earley CJ, Garcia-Borreguero D, Kotagal S, Manconi M, Ondo W, Ulfberg J, Winkelman JW. Evidence-based and consensus clinical practice guidelines for the iron treatment of restless legs syndrome/Willis-Ekbom disease in adults and children: an IRLSSG task force report. Sleep Med 2017; 41:27-44. [PMID: 29425576 DOI: 10.1016/j.sleep.2017.11.1126] [Citation(s) in RCA: 170] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 11/09/2017] [Accepted: 11/13/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Brain iron deficiency has been implicated in the pathophysiology of RLS, and current RLS treatment guidelines recommend iron treatment when peripheral iron levels are low. In order to assess the evidence on the oral and intravenous (IV) iron treatment of RLS and periodic limb movement disorder (PLMD) in adults and children, the International Restless Legs Syndrome Study Group (IRLSSG) formed a task force to review these studies and provide evidence-based and consensus guidelines for the iron treatment of RLS in adults, and RLS and PLMD in children. METHODS A literature search was performed to identify papers appearing in MEDLINE from its inception to July 2016. The following inclusion criteria were used: human research on the treatment of RLS or periodic limb movements (PLM) with iron, sample size of at least five, and published in English. Two task force members independently evaluated each paper and classified the quality of evidence provided. RESULTS A total of 299 papers were identified, of these 31 papers met the inclusion criteria. Four studies in adults were given a Class I rating (one for IV iron sucrose, and three for IV ferric carboxymaltose); only Class IV studies have evaluated iron treatment in children. Ferric carboxymaltose (1000 mg) is effective for treating moderate to severe RLS in those with serum ferritin <300 μg/l and could be used as first-line treatment for RLS in adults. Oral iron (65 mg elemental iron) is possibly effective for treating RLS in those with serum ferritin ≤75 μg/l. There is insufficient evidence to make conclusions on the efficacy of oral iron or IV iron in children. CONCLUSIONS Consensus recommendations based on clinical practice are presented, including when to use oral iron or IV iron, and recommendations on repeated iron treatments. New iron treatment algorithms, based on evidence and consensus opinion have been developed.
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Affiliation(s)
- Richard P Allen
- Department of Neurology, Johns Hopkins University, Hopkins Bayview Medical Center, Baltimore, MD, USA.
| | - Daniel L Picchietti
- University of Illinois College of Medicine at Urbana-Champaign and Carle Foundation Hospital, Urbana, IL, USA
| | - Michael Auerbach
- Department of Medicine, Georgetown University, Washington DC, USA
| | - Yong Won Cho
- Department of Neurology, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - James R Connor
- Department of Neurosurgery, Penn State Hershey Medical Center, Hershey PA, USA
| | - Christopher J Earley
- Department of Neurology, Johns Hopkins University, Hopkins Bayview Medical Center, Baltimore, MD, USA
| | | | - Suresh Kotagal
- Department of Neurology and the Center for Sleep Medicine, Mayo Clinic, Rochester, MN, USA
| | - Mauro Manconi
- Sleep and Epilepsy Center, Neurocenter of Southern Switzerland, Civic Hospital of Lugano, Lugano, Switzerland
| | - William Ondo
- Methodist Neurological Institute, Weill Cornell Medical School Houston, TX, USA
| | - Jan Ulfberg
- Sleep Disorders Department, Capio Health Center, Örebro, Sweden
| | - John W Winkelman
- Departments of Psychiatry and Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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29
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Dye TJ, Jain SV, Simakajornboon N. Outcomes of long-term iron supplementation in pediatric restless legs syndrome/periodic limb movement disorder (RLS/PLMD). Sleep Med 2017; 32:213-219. [DOI: 10.1016/j.sleep.2016.01.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 01/26/2016] [Accepted: 01/27/2016] [Indexed: 10/22/2022]
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30
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Picchietti DL. Should oral iron be first-line therapy for pediatric restless legs syndrome and periodic limb movement disorder? Sleep Med 2017; 32:220-221. [DOI: 10.1016/j.sleep.2016.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 05/07/2016] [Indexed: 11/28/2022]
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31
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Deng Y, Wu J, Jia Q. Efficacy of Intravenous Iron Sucrose in Hemodialysis Patients with Restless Legs Syndrome (RLS): A Randomized, Placebo-Controlled Study. Med Sci Monit 2017; 23:1254-1260. [PMID: 28285317 PMCID: PMC5360424 DOI: 10.12659/msm.900520] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Background Restless legs syndrome (RLS) is a common disorder in hemodialysis (HD) patients that causes sleep disturbances and diminished quality of life. Because iron deficiency has been implicated in the pathogenesis of RLS, we sought to investigate the effects of intravenous (IV) iron sucrose on symptoms of RLS in HD patients. Material/Methods The study was a randomized, placebo-controlled study of 1000 mg iron sucrose versus normal saline as placebo. Patients were evaluated at baseline and 2 weeks after the last injection. The severity of RLS was assessed using the International RLS Study Group rating scale (IRLS). Blood samples were taken to measure iron parameters reflecting the iron status, including serum ferritin (SF) concentration, percentage transferrin saturation (TSAT%) and hemoglobin (Hb), and other biochemical parameters as safety assessments, including creatinine (Cr), urea, intact parathyroid hormone (iPTH), and the index of urea clearance (Kt/V). Adverse events were monitored in all subjects during the period of infusion. Results After 2 weeks, IRLS scores decreased more in the IV-iron group (−7.38±2.03) than in the placebo group (−0.81±2.61) (P=0.000). Serum ferritin, TSAT, and hemoglobin increased more in the IV-iron group (227.63±77.64 μg/L; 26.06±7.77%; 13.98±3.62g/L, respectively) than in the placebo group (SF, p=0.000; TSAT, p=0.000; Hb, p=0.000, respectively). There were no significant differences between IV-iron and placebo groups in Cr, urea, iPTH, and Kt/V. No adverse effects were observed in the study. Conclusions IV iron sucrose is a safe and effective treatment for reducing RLS symptoms in HD patients over the short-term.
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Affiliation(s)
- Yinghui Deng
- Department of Nephrology, Xuanwu Hospital, Capital Medical University, Beijing, China (mainland)
| | - Jinglin Wu
- Department of Nephrology, Xuanwu Hospital, Capital Medical University, Beijing, China (mainland)
| | - Qiang Jia
- Department of Nephrology, Xuanwu Hospital, Capital Medical University, Beijing, China (mainland)
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32
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Connor JR, Patton SM, Oexle K, Allen RP. Iron and restless legs syndrome: treatment, genetics and pathophysiology. Sleep Med 2016; 31:61-70. [PMID: 28057495 DOI: 10.1016/j.sleep.2016.07.028] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 07/22/2016] [Accepted: 07/29/2016] [Indexed: 12/13/2022]
Abstract
In this article, we review the original findings from MRI and autopsy studies that demonstrated brain iron status is insufficient in individuals with restless legs syndrome (RLS). The concept of deficient brain iron status is supported by proteomic studies from cerebrospinal fluid (CSF) and from the clinical findings where intervention with iron, either dietary or intravenous, can improve RLS symptoms. Therefore, we include a section on peripheral iron status and how peripheral status may influence both the RLS symptoms and treatment strategy. Given the impact of iron in RLS, we have evaluated genetic data to determine if genes are directly involved in iron regulatory pathways. The result was negative. In fact, even the HFE mutation C282Y could not be shown to have a protective effect. Lastly, a consistent finding in conditions of low iron is increased expression of proteins in the hypoxia pathway. Although there is lack of clinical data that RLS patients are hypoxic, there are intriguing observations that environmental hypoxic conditions worsen RLS symptoms; in this chapter we review very compelling data for activation of hypoxic pathways in the brain in RLS patients. In general, the data in RLS point to a pathophysiology that involves decreased acquisition of iron by cells in the brain. Whether the decreased ability is genetically driven, activation of pathways (eg, hypoxia) that are designed to limit cellular uptake is unknown at this time; however, the data strongly support a functional rather than structural defect in RLS, suggesting that an effective treatment is possible.
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Affiliation(s)
- James R Connor
- Department of Neurosurgery, Penn State Hershey Medical Center, Hershey, PA, USA.
| | - Stephanie M Patton
- Department of Neurosurgery, Penn State Hershey Medical Center, Hershey, PA, USA
| | - Konrad Oexle
- Institut für Humangenetik, Technische Universität, Munich, Germany
| | - Richard P Allen
- The Johns Hopkins University, Dep of neuroloy, Baltimore, MD USA
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Sleep Problems in Children with Attention Deficit/Hyperactivity Disorder: Current Status of Knowledge and Appropriate Management. Curr Psychiatry Rep 2016; 18:76. [PMID: 27357497 DOI: 10.1007/s11920-016-0711-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Attention deficit hyperactivity disorder (ADHD) affects approximately 5 % of children and adolescents, and sleep problems are common in these patients. There is growing evidence informing the significant importance of sleep problems in youth with ADHD. The sleep problems in children with ADHD include specific sleep disorders and sleep disturbances due to comorbid psychiatric disorders or ADHD medications. The specific sleep disorders of ADHD children include behaviorally based insomnia, sleep-disordered breathing, and restless legs syndrome/periodic limb movement disorder. Current practices on the management of sleep problems for ADHD children are based mostly on expert consensus, whereas more evidence-based literature can be found only recently. Assessment of the sleep conditions in ADHD children before initiation of pharmacotherapy is the currently recommended guideline, and good sleep hygiene can be considered as the first-line treatment option. In addition to modifying the dose regimens, formulation, or alternative stimulants when sleep problems are encountered in ADHD children, atomoxetine, once daily guanfacine extended release, and melatonin are potential choices for ADHD children with more severe sleep problems. In this review, we aimed to provide the most updated information, preferably based on meta-analyses, systemic review, and randomized controlled trials published in the latest 3 years, in order to be clinically useful for practitioners and clinicians.
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34
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Gupta R, Dhyani M, Kendzerska T, Pandi-Perumal SR, BaHammam AS, Srivanitchapoom P, Pandey S, Hallett M. Restless legs syndrome and pregnancy: prevalence, possible pathophysiological mechanisms and treatment. Acta Neurol Scand 2016; 133:320-9. [PMID: 26482928 DOI: 10.1111/ane.12520] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/25/2015] [Indexed: 02/01/2023]
Abstract
Restless legs syndrome (RLS) is a common sleep disorder that may be associated with pregnancy. Studies have found that the prevalence of RLS among pregnant women ranged from 10 to 34%. Typically, there is complete remission of symptoms soon after parturition; however, in some patients, they may continue postpartum. RLS has been shown to be associated with a number of complications in pregnancy including preeclampsia and increased incidence of Cesarean sections. Although multiple hypotheses have been proposed to explain this association, each individual hypothesis cannot completely explain the whole pathogenesis. Present understanding suggests that a strong family history, low serum iron and ferritin level, and high estrogen level during pregnancy might play important roles. Vitamin D deficiency and calcium metabolism may also play a role. Medical treatment of RLS during pregnancy is difficult and challenging considering the risks to mother and fetus. However, in some cases, the disease may be severe enough to require treatment.
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Affiliation(s)
- R. Gupta
- Department of Psychiatry and Sleep Clinic; Himalayan Institute of Medical Sciences; Dehradun India
| | - M. Dhyani
- Department of Psychiatry and Sleep Clinic; Himalayan Institute of Medical Sciences; Dehradun India
| | - T. Kendzerska
- Institute for Clinical Evaluative Sciences; Sunnybrook Health Sciences Center; Toronto ON Canada
| | | | - A. S. BaHammam
- Department of Medicine; The University Sleep Disorders Center; College of Medicine; King Saud University; Riyadh Saudi Arabia
- Strategic Technologies Program of the National Plan for Sciences, Technology and Innovation Riyadh; Riyadh Saudi Arabia
| | - P. Srivanitchapoom
- Human Motor Control Section; National Institute of Neurological Disorders and Stroke; National Institutes of Health; Bethesda MD USA
- Department of Medicine; Faculty of Medicine; Siriraj Hospital Mahidol University; Bangkok Thailand
| | - S. Pandey
- Govind Ballabh Pant Institute of Postgraduate Medical Education & Research; New Delhi India
| | - M. Hallett
- Human Motor Control Section; National Institute of Neurological Disorders and Stroke; National Institutes of Health; Bethesda MD USA
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Mantadakis E. Advances in Pediatric Intravenous Iron Therapy. Pediatr Blood Cancer 2016; 63:11-6. [PMID: 26376214 DOI: 10.1002/pbc.25752] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 08/18/2015] [Indexed: 12/14/2022]
Abstract
Iron deficiency anemia (IDA) continues to be very common worldwide. Intravenous (IV) iron is an infrequently used therapeutic option in children with IDA despite numerous studies in adults and several small but notable pediatric studies showing efficacy and safety. Presently, the availability of newer IV iron products allows for replacement of the total iron deficit at a single setting. These products appear safer compared to the high molecular weight iron dextrans of the past. Herein, we review the medical literature and suggest that front line use of IV iron should be strongly considered in diseases associated with IDA in children.
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Affiliation(s)
- Elpis Mantadakis
- Department of Pediatrics, Pediatric Hematology/Oncology Unit, Democritus University of Thrace Faculty of Medicine and University General District Hospital of Evros, Alexandroupolis, Thrace, Greece
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Wijemanne S, Jankovic J. Restless legs syndrome: clinical presentation diagnosis and treatment. Sleep Med 2015; 16:678-90. [PMID: 25979181 DOI: 10.1016/j.sleep.2015.03.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 02/28/2015] [Accepted: 03/02/2015] [Indexed: 12/27/2022]
Abstract
Restless legs syndrome (RLS) is a circadian disorder of sensory-motor integration that may be related to genetically determined dysregulation of iron transport across the blood-brain barrier. Dopamine agonists (DAs) have been considered the first-line therapy, but with the growing appreciation of problems associated with long-term treatment, particularly augmentation and impulse control disorder, alpha-2-delta drugs, such as gabapentin, are now considered the first line of treatment in patients with troublesome RLS. Opioids can be considered as an alternative therapy, particularly in patients with DA-related augmentation. In more severe cases, a combination therapy may be required. Intravenous iron therapy may be considered on those patients with refractory RLS.
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Affiliation(s)
- Subhashie Wijemanne
- Parkinson's Disease Center and Movement Disorders Clinic, Baylor College of Medicine, Houston, Texas, USA
| | - Joseph Jankovic
- Parkinson's Disease Center and Movement Disorders Clinic, Baylor College of Medicine, Houston, Texas, USA.
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Abakay O, Abakay A, Palanci Y, Yuksel H, Selimoglu Sen H, Evliyaoglu O, Tanrikulu AC. Relationship between hepcidin levels and periodic limb movement disorder in patients with obstructive sleep apnea syndrome. Sleep Breath 2014; 19:459-66. [PMID: 25008988 DOI: 10.1007/s11325-014-1028-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 06/19/2014] [Accepted: 06/26/2014] [Indexed: 12/14/2022]
Abstract
PURPOSE This study was aimed to assess potential correlations between periodic leg movement (PLM) index, hepcidin levels, and iron status in patients with obstructive sleep apnea syndrome (OSAS). METHODS Forty-four newly diagnosed OSAS patients and 49 non-apneic controls were enrolled in this study. All patients underwent polysomnographic evaluation. The hepcidin, iron, ferritin, total iron binding capacity, and C-reactive protein levels were measured. RESULTS The mean age was 47.4 ± 7.2 years (18-68) in the OSAS group and 44.9 ± 11.1 years (23-65) in the control group. There were no differences in age, gender, and smoking between OSAS patients and controls. Mean apnea-hypopnea index (AHI) was 25.1 events/h. Mean serum hepcidin levels were significantly higher in OSAS subjects (725.9 ng/ml) than in control subjects (646.0 ng/ml) (p < 0.001). Serum iron levels were significantly lower in the OSAS and PLM disorder groups than in control subjects (p < 0.001). Serum hepcidin levels were significantly correlated with AHI (r = 0.453) and PLM index (r = 0.114). Serum iron levels were significantly negatively correlated with AHI (r = -0.169) and PLM index (r = -0.180). CONCLUSIONS In our study, the level of hepcidin was increased in patients with OSAS. Our study indicates that levels of hepcidin correlate with the AHI and PLM index severity of OSAS.
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Affiliation(s)
- Ozlem Abakay
- Department of Chest Diseases, Medical Faculty, Dicle University, Diyarbakir, Turkey
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