Manisha Witmans

Dr. Manisha Witmans

Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R3, Canada

Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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19 September 2021 in Children
Verified
Journal Article
Open access
PDF file
GUGino Urbano
Gino Urbano
BTBea Tablizo
Bea Tablizo
YMYoumna Moufarrej
Youmna Moufarrej
Mary Anne TablizoMary Anne Tablizo
Mary Anne Tablizo
MCMaida Lynn Chen
Maida Lynn Chen
Manisha WitmansManisha Witmans
Manisha Witmans
Obstructive sleep apnea (OSA) is a form of sleep-disordered breathing that affects up to 9.5% of the pediatric population. Untreated OSA is associated with several complications, including neurobehavioral sequelae, growth and developmental delay, cardiovascular dysfunction, and insulin resistance. Attention-deficit/hyperactivity disorder (ADHD) is among the neurobehavioral sequelae associated with OSA. This review aims to summarize the research on the relationship between OSA and ADHD and investigate the impacts of OSA treatment on ADHD symptoms. A literature search was conducted on electronic databases with the key terms: “attention deficit hyperactivity disorder” or “ADHD”, “obstructive sleep apnea” or “OSA”, “sleep disordered breathing”, and “pediatric” or “children”. Review of relevant studies showed adenotonsillectomy to be effective in the short-term treatment of ADHD symptoms. The success of other treatment options, including continuous positive airway pressure (CPAP), in treating ADHD symptoms in pediatric OSA patients has not been adequately evaluated. Further studies are needed to evaluate the long-term benefits of surgical intervention, patient factors that may influence treatment success, and the potential benefits of other OSA treatment methods for pediatric ADHD patients.

24 February 2022 in Children
Verified
Journal Article
Open access
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MKMandip Singh Kang
Mandip Singh Kang
FMFan Mo
Fan Mo
Manisha WitmansManisha Witmans
Manisha Witmans
VSVicente Santiago
Vicente Santiago
Mary Anne TablizoMary Anne Tablizo
Mary Anne Tablizo
Obstructive sleep apnea in children has been linked with behavioral and neurocognitive problems, impaired growth, cardiovascular morbidity, and metabolic consequences. Diagnosing children at a young age can potentially prevent significant morbidity associated with OSA. Despite the importance of taking a comprehensive sleep history and performing thorough physical examination to screen for signs and symptoms of OSA, these findings alone are inadequate for definitively diagnosing OSA. In-laboratory polysomnography (PSG) remains the gold standard of diagnosing pediatric OSA. However, there are limitations related to the attended in-lab polysomnography, such as limited access to a sleep center, the specialized training involved in studying children, the laborious nature of the test and social/economic barriers, which can delay diagnosis and treatment. There has been increasing research about utilizing alternative methods of diagnosis of OSA in children including home sleep testing, especially with the emergence of wearable technology. In this article, we aim to look at the presentation, physical exam, screening questionnaires and current different modalities used to aid in the diagnosis of OSA in children.

2 June 2014 in Pediatric Rheumatology
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Journal Article
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Jennifer StinsonJennifer Stinson
Jennifer Stinson
JHJill A Hayden
Jill A Hayden
SKSara Ahola Kohut
Sara Ahola Kohut
CSCharlene Soobiah
Charlene Soobiah
JCJenny Cartwright
Jenny Cartwright
Manisha WitmansManisha Witmans
Manisha Witmans
Sleep problems are common among children with chronic illnesses such as Juvenile Idiopathic Arthritis (or JIA). However, little is known about the frequency and severity of sleep disturbance(s) and the factors that are associated with sleep problems in children with JIA. The mechanism(s) of the relationships characterizing the development or exacerbation of sleep problems in children with JIA are still unknown, however studies have reported an association. The purpose of this study was to synthesize existing research related to sleep problems in children with JIA.

17 April 2014 in Journal of Medical Case Reports
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Journal Article
Open access
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SWSara V Weselake
Sara V Weselake
JFJessica L. Foulds
Jessica L. Foulds
RCRobert Couch
Robert Couch
Manisha WitmansManisha Witmans
Manisha Witmans
Daniela RubinDaniela Rubin
Daniela Rubin
AHAndrea Haqq
Andrea Haqq
Introduction: Sleep abnormalities, including narcolepsy and cataplexy, are a common feature of Prader-Willi syndrome. Long-term treatment with the central nervous system stimulant modafinil has not been reported. In this case report we present a longitudinal perspective of sleep abnormalities in a nine-year-old Caucasian girl with Prader-Willi syndrome from age two to age nine, and detail the response to treatment with the central nervous system stimulant modafinil. Case presentation: Our patient presented at two years of age with hypersomnia and narcoleptic episodes with cataplectic features. Initial polysomnograph testing revealed adequate sleep efficiency, but increased sleep fragmentation especially during rapid eye movement sleep. The narcoleptic episodes continued and a repeat polysomnograph at age five years confirmed features consistent with narcolepsy. Further sleep studies at six years, including a multiple sleep latency test, demonstrated signs of excessive daytime sleepiness. Treatment with modafinil was initiated at age seven years six months due to persistent hypersomnia and narcoleptic symptoms. Two polysomnograph studies were performed following treatment with modafinil, at age eight years six months and nine years three months. These studies showed excellent sleep efficiency and improvement of rapid eye movement sleep parameters, supporting the beneficial effects of long-term modafinil therapy. Conclusions: Long-term modafinil therapy may ameliorate the sleep disturbances of Prader-Willi syndrome and should be the focus of future clinical trials.

9 March 2024 in Children
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Journal Article
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PSPranita Shenoy
Pranita Shenoy
AEAdriana Etcheverry
Adriana Etcheverry
JIJalyn Ia
Jalyn Ia
Manisha WitmansManisha Witmans
Manisha Witmans
MTMary Anne Tablizo
Mary Anne Tablizo
Exogenous melatonin is typically used for sleep regulation in the context of insomnia either in healthy children or those with neurodevelopmental disabilities. It is also used for the management of circadian rhythm sleep disorders in pediatric and adolescent patients. There are also many other possible indications that we will discuss in this paper beyond the role of melatonin for sleep regulation, including its potential use for various areas of medicine such as inflammatory conditions. Since melatonin is unregulated in the United States, distributed over the counter and perceived to be natural and safe, it has become available in many forms in the last two decades. With increasing sleep disturbances and mental health problems after the COVID-19 pandemic, melatonin has become even more popular and studies have shown a dramatic increase in use as well as resulting side effects, including melatonin overdose. As melatonin is generally viewed by physicians as a benign medication, we hope to increase awareness of melatonin’s properties as well as negative side effects to optimize its use in the pediatric population.

15 March 2022 in Children
Verified
Journal Article
Open access
PDF file
ICIndira Chandrasekar
Indira Chandrasekar
Mary Anne TablizoMary Anne Tablizo
Mary Anne Tablizo
Manisha WitmansManisha Witmans
Manisha Witmans
JCJose Maria Cruz
Jose Maria Cruz
MCMarcus Cummins
Marcus Cummins
WEWendy Estrellado-Cruz
Wendy Estrellado-Cruz
Neonates have distinctive anatomic and physiologic features that predispose them to obstructive sleep apnea (OSA). The overall prevalence of neonatal OSA is unknown, although an increase in prevalence has been reported in neonates with craniofacial malformations, neurological disorders, and airway malformations. If remained unrecognized and untreated, neonatal OSA can lead to impaired growth and development, cardiovascular morbidity, and can even be life threatening. Polysomnography and direct visualization of the airway are essential diagnostic modalities in neonatal OSA. Treatment of neonatal OSA is based on the severity of OSA and associated co-morbidities. This may include medical and surgical interventions individualized for the affected neonate. Based on this, it is expected that infants with OSA have more significant healthcare utilization.