Publications by authors named "Chirakalwasan N"

The aim of this study was to determine the effects of mandibular setback surgery exceeding 5 mm on upper airway and sleep quality in skeletal Class III patients, with comparisons to Class I controls. Sixteen individuals per group were selected based on their ANB angle and surgical need. 2D and 3D airway analyses were conducted.

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This part reviews the management of chronic cough and proposes a management algorithm. Despite proven improvements in quality of life following chronic cough treatment, a clear understanding of the disease and the evidence for the efficacy of some treatments remain vague. Eight key questions regarding the treatment in the uncertain areas were systematically addressed based on the PICO framework and applying the GRADE system for evidence synthesis to provide the strength of recommendation and quality of evidence for key questions, with narrative components for the description of other chronic cough treatment including non-pharmacological therapy.

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Chronic cough is a common clinical condition requiring comprehensive assessment. This review employs a symptom-focused approach, prioritizing the presenting symptom of "chronic cough" to mirror real-world clinical practice. Ten key questions regarding the investigations in the uncertain areas were systematically addressed based on the PICO framework and applying the GRADE system for evidence synthesis to provide the strength of recommendation and quality of evidence for key questions.

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Article Synopsis
  • The study aims to create a flexible yet standardized sleep medicine fellowship curriculum tailored for diverse healthcare settings across Asia, addressing existing training disparities.
  • The development process included a thorough gap analysis, literature review, and expert consensus through a structured survey method.
  • The resulting curriculum features two training tracks (one-year and two-year), detailed learning outcomes, competency-based content, and comprehensive assessment strategies to enhance sleep medicine education and patient care in the region.
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Objective: This study compares the efficacy of oral exercise alone to oral exercise with frenectomy in improving obstructive sleep apnea (OSA) symptoms and quality of life (QOL) in patients with ankyloglossia.

Materials And Methods: A prospective, controlled, double-blind clinical study enrolled fifteen adults (20-60 years) newly diagnosed with mild to moderate OSA and ankyloglossia. Participants were randomly assigned to either oral exercise alone (control group; n = 8) or oral exercise with frenectomy (intervention group; n = 7).

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Article Synopsis
  • A study conducted by the Asian Society of Sleep Medicine aimed to assess the state of sleep medicine accreditation and training across 29 Asian countries and identified significant gaps in the current system.
  • The survey, which had an 86% response rate, revealed that only 36% of the regions recognize sleep medicine as an independent specialty, with disparities in training standards and a lack of formalized guidelines in many areas.
  • Recommendations include developing a standardized Asian Sleep Medicine Training Curriculum and accreditation guidelines to improve training and recognition of sleep medicine across Asia.
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While various treatment options for primary snoring are available, evidence-based recommendations to determine the optimal intervention remain unestablished. To inform future directions of research to guide clinical decision-making, this scoping review was conducted to map the existing evidence on interventions for primary snoring, the outcomes and instruments used to assess their clinical effects in adults. The feasibility of conducting further systematic reviews and comparing outcomes across these therapies using network meta-analysis was also assessed.

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Background: Asthma and allergic rhinitis (AR) can coexist and cause disabilities. This study aimed to assess the association between AR, asthma control, asthma-related quality of life, and other comorbidities.

Methods: A cross-sectional study was conducted in adults with asthma in six hospitals in Thailand.

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Background: Sleep bruxism (SB) is often found to co-exist with obstructive sleep apnea (OSA). However, there are no data on prevalence and risk factors of SB in patients with OSA patients regarding the effect of optimal positive airway pressure (PAP).

Objective: This study aimed to study prevalence and risk factors of SB in OSA and to compare SB episodes during pre-treatment versus during optimal PAP therapy.

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Diabetic retinopathy (DR) is one of the most prevalent microvascular diabetic complications. Poor sleep health and obstructive sleep apnea (OSA) are risk factors for diabetes and poor glycemic control. Recent studies have suggested associations between poor sleep health/OSA and DR.

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This study investigated the impact of comprehensive sleep patterns on glycaemic parameters and endothelial function in adolescents and young adults with type 1 diabetes (T1D). Thirty subjects with type 1 diabetes (aged 13-25) without chronic complications participated. For 1 week, glucose levels were monitored by real-time continuous glucose monitoring (CGM) and sleep was simultaneously assessed by actigraphy.

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Purpose: Monitoring and improving sleep quality may help recovery from major illness. Polysomnography is a gold standard for measuring sleep quality, but routine use is not practical. The goal of this study is to investigate the diagnostic accuracy of an alternative monitor, the Bispectral Index (BIS), for evaluating the quality of sleep-in postoperative patients in the intensive care unit (ICU).

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Study Objectives: To study the effectiveness of the first internet-based cognitive behavioral therapy for insomnia (CBT-i) in Thailand, using the Nitra application, for chronic subthreshold to moderate insomnia treatment.

Methods: An interventional study without a control group was conducted between January and June 2022. Participants were adults aged 18 years old and older with subthreshold to moderate severity of chronic insomnia (insomnia severity index (ISI) of 8-21) and had mean sleep efficiency <85% from baseline sleep diaries.

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Circadian abnormalities can adversely affect glucose metabolism. This study determined whether behavioral circadian parameters, as assessed by rest-activity rhythm, were predictors of glycemic control in patients with prediabetes. Seventy-nine patients with prediabetes participated.

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Background: Nasal steroids are commonly prescribed to reduce nasal side effects, which are the primary cause of continuous positive airway pressure (CPAP) intolerance in obstructive sleep apnea (OSA) patients.

Objective: We conducted a systematic review and meta-analysis of OSA patients to assess the effect of nasal steroids on CPAP compliance and nasal symptoms.

Methods: PubMed, Scopus, Ovid, and Cochrane Library were searched through March 2022.

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Obstructive sleep apnoea (OSA) is strongly associated with cardiovascular disease (CVD). However, evidence supporting this association in the Asian population is scarce. Given the differences in the epidemiology of CVD and cardiovascular risk factors, as well as differences in the availability of healthcare resources between Asian and Western countries, an Asian Pacific Society of Cardiology (APSC) working group developed consensus recommendations on the management of OSA in patients with CVD in the Asia-Pacific region.

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The multidisciplinary experts in Thailand developed an asthma management recommendation that was relevant to low-middle income countries (LMICS). Populations level consideration about asthma management is emphasized. The healthcare systems, access to and availability of treatments as well as the asthma populations vary from country to country in LMICS.

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Purpose: Positive airway pressure (PAP) adherence is a significant issue among patients with obstructive sleep apnea (OSA). However, the data are limited regarding PAP adherence during the current COVID-19 pandemic.

Methods: A cross-sectional study was conducted between February and October 2020 at the Excellence Center for Sleep Disorders, King Chulalongkorn Memorial Hospital, Bangkok, Thailand.

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Purpose: To evaluate the association between a novel integrated event-based and hypoxemia-based parameter of polysomnography (PSG), hypoxemic load or HL100, and fasting blood glucose (FBG) and hemoglobin A1c (HbA1c) levels.

Methods: Adult patients, who underwent an in-lab PSG at the University of Iowa Hospitals and Clinics with FBG or HbA1c levels, were included. Event-based parameter and hypoxemia-based parameter data were derived.

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Nocturnal asthma has unique pathophysiological mechanisms, comorbid diseases, and intervention. Even though the treatments for asthma have been highly developed, there are a high number of patients with asthma whose symptoms are not well controlled, particularly those with nocturnal asthma in which symptoms occur during the night and interfere with sleep. Moreover, nocturnal asthma also causes poor sleep quality, impairs quality of life, and deteriorates daytime cognitive performance.

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Obstructive sleep apnoea (OSA) is prevalent in obese women with gestational diabetes mellitus (GDM). The present pilot study explored associations between OSA severity and metabolites in women with GDM. A total of 81 obese women with diet-controlled GDM had OSA assessment (median gestational age [GA] 29 weeks).

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Cytokine release syndrome (CRS) is known to be associated with severe coronavirus disease 2019 (COVID-19). Multiple anti-inflammatory therapies such as tocilizumab, corticosteroids, intravenous immunoglobulin (IVIG), and haemoadsorption or haemoperfusion have been used to combat this life-threatening condition. However, immunocompromised hosts are often omitted from research studies, and knowledge on the clinical efficacy of these therapies in immunocompromised patients is therefore limited.

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Objective: Sleep disturbances (insufficient or poor sleep quality) have been linked to abnormal glucose metabolism. This systematic review and meta-analysis aimed to explore the effects of behavioral and pharmacological sleep interventions on glucose metabolism.

Methods: Medline and Embase were used for systematic search.

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Objective: This study aimed to investigate the association between each parameter of intermittent hypoxia in obstructive sleep apnea (OSA) and the cognitive profile, cortical thickness, and white matter integrity in middle-aged and older adults.

Methodology: Participants were newly diagnosed with moderate or severe OSA from the King Chulalongkorn Memorial Hospital, Bangkok, Thailand. Respiratory parameters from polysomnography were extracted.

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