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Obstructive Sleep Apnoea

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https://www.readbyqxmd.com/read/28227926/a-fast-approximation-method-for-principal-component-analysis-applied-to-ecg-derived-respiration-for-osa-detection
#1
Nadi Sadr, Philip de Chazal, Nadi Sadr, Philip de Chazal, Nadi Sadr, Philip de Chazal
In this paper, we present an approximation method for principal component analysis (PCA) and apply it to estimating the respiration from the overnight ECG signal. The approximation method is computationally fast with low memory requirements. We compare it to a full PCA method which is applied to segments of the ECG. Features were calculated from the two ECG derived respiration signals (EDR) and classifiers trained to detect obstructive sleep apnoea (OSA). The Extreme Learning Machine and Linear Discriminant classifier were used to classify the recordings...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225162/mandibular-position-and-movements-suitability-for-diagnosis-of-sleep-apnoea
#2
Jean-Benoit Martinot, Jean-Christian Borel, Valérie Cuthbert, Hervé Jean-Pierre Guénard, Stéphane Denison, Philip E Silkoff, David Gozal, Jean-Louis Pepin
BACKGROUND AND OBJECTIVE: Mandibular movements (MMs) and position during sleep reflect respiratory efforts related to increases in upper airway resistance and micro-arousals. The study objective was to assess whether MM identifies sleep-disordered breathing (SDB) in patients with moderate to high pre-test probability. METHODS: This was a prospective study of 87 consecutive patients referred for an in-laboratory sleep test. Magnetometer-derived MM signals were incorporated into standard polysomnography (PSG)...
November 6, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28225159/a-7-year-follow-up-study-of-obstructive-sleep-apnoea-in-healthy-elderly-the-proof-cohort-study
#3
Emilia Sforza, David Hupin, Vincent Pichot, Jean Claude Barthélémy, Frédéric Roche
BACKGROUND AND OBJECTIVE: Clinical and epidemiological cohort studies have shown that obstructive sleep apnoea (OSA) is a common but largely undiagnosed disorder in senior subjects, where progressive deterioration of the pathology would be expected as a consequence of the ageing processes. Our study examines the longitudinal progression of OSA over a 7-year period in a community-based sample of healthy subjects. METHODS: The sample consisted of 284 volunteers, aged >65 years (52% women, 48% men) accepting clinical and instrumental follow-up at 7 years...
February 22, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28224729/management-of-hypoxaemic-respiratory-failure-in-a-respiratory-high-dependency-unit
#4
Craig Hukins, Mimi Wong, Michelle Murphy, John Upham
BACKGROUND: There are limited data on outcomes of hypoxaemic respiratory failure (HRF), especially in non-ICU settings. AIM: To assess outcomes in HRF (without multi-system disease and not requiring early intubation) directly admitted to a Respiratory High Dependency Unit (R-HDU). METHODS: Retrospective, cohort study of HRF compared to Hypercapnic Respiratory Failure (HCRF) in a R-HDU (2007-2011). Patient characteristics (age, gender, pre-morbid status, diagnoses) and outcomes (non-invasive ventilation (NIV) use, survival, ICU admission) were assessed...
February 22, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28215255/performance-characteristics-of-the-french-version-of-the-severity-hierarchy-score-for-paediatric-sleep-apnoea-screening-in-clinical-settings
#5
Xuân-Lan Nguyên, Pierre Lévy, Nicole Beydon, David Gozal, Bernard Fleury
BACKGROUND: Paediatric obstructive sleep apnoea syndrome (OSAS) is a highly prevalent condition carrying increased risk for impaired cognitive and cardiovascular function. The standard diagnosis consists of full-night polysomnography (PSG), but limited access to PSG leads to substantial under-diagnosis. The use of a validated and simple diagnostic screening tool to predict OSAS could prioritise night sleep recordings in children at risk of OSAS, and help in clinical decision-making. OBJECTIVE: This study aimed to prospectively assess the performance of the French version of the severity hierarchy score (SHS) in paediatric OSAS...
February 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28215245/effects-of-renal-sympathetic-denervation-on-blood-pressure-sleep-apnoea-severity-and-metabolic-indices-a-prospective-cohort-study
#6
Florrie Daniels, Simon De Freitas, Andrew Smyth, John Garvey, Conor Judge, John Joseph Gilmartin, Faisal Sharif
BACKGROUND: Catheter-based renal sympathetic denervation (RSD) significantly reduces blood pressure in patients with resistant hypertension, who commonly have obstructive sleep apnoea (OSA). These patients are considered particularly responsive to the antihypertensive effects of RSD, but additional benefits of metabolic control on sleep apnoea severity have not been thoroughly investigated. METHODS: The effect of RSD was evaluated prospectively in a cohort of patients with OSA (apnoea-hypopnea index (AHI) ≥15 events per hour and an Epworth Sleepiness Scale (ESS) score ≤9) and treatment resistant hypertension...
February 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28215232/validation-of-the-flinders-fatigue-scale-as-a-measure-of-daytime-fatigue
#7
Kate Cameron, Paul Williamson, Michelle A Short, Michael Gradisar
STUDY OBJECTIVES: To clinically validate the Flinders Fatigue Scale (FFS) as a brief measure of daytime fatigue, and to derive cut-off scores to classify fatigue severity. METHOD: The FFS was administered to 439 adult volunteers from the general population, 292 adults with insomnia, 132 adults with Obstructive Sleep Apnoea (OSA) and 66 adults with Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (CFS/ME), together with the Fatigue Severity Scale (FSS) and the Epworth Sleepiness Scale (ESS)...
February 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28210922/resting-cerebral-blood-flow-alteration-in-severe-obstructive-sleep-apnoea-an-arterial-spin-labelling-perfusion-fmri-study
#8
Si Nie, De-Chang Peng, Hong-Han Gong, Hai-Jun Li, Li-Ting Chen, Cheng-Long Ye
STUDY OBJECTIVES: The aim of this study is to investigate changes in regional cerebral blood flow (rCBF) in awake people with untreated severe obstructive sleep apnoea (OSAs) compared with good sleepers (GSs). DESIGN: Arterial spin labelling perfusion imaging was used to quantify cerebral perfusion based on resting-state functional magnetic resonance imaging (MRI). SETTING: Lying supine in a 3.0-T magnetic resonance imaging scanner in the night was done...
February 16, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28198598/coblation-%C3%A2-intracapsular-tonsillectomy-tonsillotomy-in-children-a-prospective-study-of-500-consecutive-cases-with-long-term-follow-up
#9
A W Hoey, N M Foden, S Hadjisymeou Andreou, F Noonan, A K Chowdhury, Greig S R, E L Sproson, D Allin, N Amin, K M Wouters, N E Jonas, D J Tweedie
OBJECTIVES: Intracapsular tonsillectomy (tonsillotomy) has been used internationally, mainly in the management of obstructive sleep apnoea, rather than recurrent tonsillitis, with little published data evaluating its use for this latter indication. We present long-term prospective data from 500 paediatric cases undergoing Coblation(®) intracapsular tonsillectomy, for both obstructive and infective indications. DESIGN: Prospective case series, March 2013-January 2016, all with completed follow up...
February 15, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28198530/location-of-the-narrowest-area-of-the-pharynx-regarding-bmi-and-osa-severity
#10
Marta Krasny, Jarosław Wysocki, Monika Prus, Kazimierz Niemczyk
BACKGROUND: Among authors studying morphological determinants of the Obstructive Sleep Apnoea (OSA) controversies exist on the location of the narrowest area within the pharynx critical for development of obstruction. Those disagreements primarily revolve around differences between obese and nonobese OSA patients. Determination whether the location and size of the narrowest area within the pharynx differentiates the obese and nonobese OSA patients. MATERIALS AND METHODS: A population of 55 subjects was investigated after being diagnosed with OSA in the Polysomnography Laboratory of the Department and Clinic of Otolaryngology in the Medical University of Warsaw...
February 15, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28198129/beyond-the-thermistor-novel-technology-for-the-ambulatory-diagnosis-of-obstructive-sleep-apnoea
#11
EDITORIAL
Emma L Gray, David J Barnes
No abstract text is available yet for this article.
February 14, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28194236/european-union-directive-2014-85-eu-on-driver-licensing-in-obstructive-sleep-apnoea-early-experiences-with-its-application-in-the-uk
#12
EDITORIAL
Dipansu Ghosh, Thomas W Mackay, Renata L Riha
OSA patients' risk of RTA should be assessed using detailed driving history with specific focus on "red flags" http://ow.ly/mxPi305isni.
September 2016: Breathe
https://www.readbyqxmd.com/read/28193305/tongue-lip-adhesion-and-tongue-repositioning-for-obstructive-sleep-apnoea-in-pierre-robin-sequence-a-systematic-review-and-meta-analysis
#13
M Camacho, M W Noller, S Zaghi, L K Reckley, C Fernandez-Salvador, E Ho, B Dunn, D K Chan
OBJECTIVE: To search for studies on tongue-lip adhesion and tongue repositioning used as isolated treatments for obstructive sleep apnoea in children with Pierre Robin sequence. METHODS: A systematic literature search of PubMed/Medline and three additional databases, from inception through to 8 July 2016, was performed by two authors. RESULTS: Seven studies with 90 patients (59 tongue-lip adhesion and 31 tongue repositioning patients) met the inclusion criteria...
February 14, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28190618/excessive-daytime-sleepiness-does-not-correlate-with-sympathetic-nervous-system-activation-and-arterial-stiffening-in-patients-with-mild-to-moderate-obstructive-sleep-apnoea-a-proof-of-principle-study
#14
Valeria Bisogni, Martino F Pengo, Panagis Drakatos, Giuseppe Maiolino, Brian Kent, Giacomo Rossitto, Joerg Steier, Gian Paolo Rossi
BACKGROUND: Increased arterial stiffness and sympathetic nervous system activity, independent markers of cardiovascular risk, are common in patients with severe obstructive sleep apnoea, who have excessive daytime sleepiness. Among patients with mild-to-moderate obstructive sleep apnoea, however, it remains unknown whether arterial stiffness and/or increased sympathetic nervous system activity correlate with excessive daytime sleepiness. METHODS: We measured heart rate variability, as an index of autonomic nervous system activity, and arterial stiffness index, as a marker of vascular damage and cardiovascular risk, in 56 men aged 18 to 75years, with mild-to-moderate obstructive sleep apnoea, and matched into two groups, "sleepy" (Epworth Sleepiness Scale≥10) and "non-sleepy" (Epworth Sleepiness Scale<10)...
February 2, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28185772/impact-of-weight-loss-management-in-osa
#15
REVIEW
Simon A Joosten, Garun S Hamilton, Matthew T Naughton
The interaction between obesity and obstructive sleep apnea (OSA) is complex. Whilst it is often assumed that obesity is the major cause of OSA, and that treatment of the OSA might mitigate further weight gain, new evidence is emerging that suggest these statements may not be the case. Obesity explains about 60% of the variance of the apnea hypopnea index definition of OSA, mainly in those < 50 years and less so in the elderly. Moreover, long term treatment of OSA with continuous positive airway pressure is associated with small but significant weight gain...
February 6, 2017: Chest
https://www.readbyqxmd.com/read/28185594/sleep-apnoea-in-australian-men-disease-burden-co-morbidities-and-correlates-from-the-australian-longitudinal-study-on-male-health
#16
Chamara Visanka Senaratna, Dallas R English, Dianne Currier, Jennifer L Perret, Adrian Lowe, Caroline Lodge, Melissa Russell, Sashane Sahabandu, Melanie C Matheson, Garun S Hamilton, Shyamali C Dharmage
BACKGROUND: Obstructive sleep apnoea is a common disorder with under-rated clinical impact, which is increasingly being recognised as having a major bearing on global disease burden. Men are especially vulnerable and become a priority group for preventative interventions. However, there is limited information on prevalence of the condition in Australia, its co-morbidities, and potential risk factors. METHODS: We used data from 13,423 adult men included in the baseline wave of Ten to Men, an Australian national study of the health of males, assembled using stratified cluster sampling with oversampling from rural and regional areas...
October 31, 2016: BMC Public Health
https://www.readbyqxmd.com/read/28181680/early-term-deliveries-and-the-risk-of-pediatric-obstructive-sleep-apnoea-in-the-offspring
#17
Asnat Walfisch, Tamar Wainstock, Ofer Beharier, Daniella Landau, Eyal Sheiner
BACKGROUND: Preterm delivery may affect the development of the upper airways resulting in a higher risk of obstructive sleep apnoea (OSA). We investigated whether children born at early term (37-38 6/7 weeks' gestation) are at an increased risk for childhood OSA as compared with those born later. METHODS: In this population-based cohort analysis all singleton deliveries occurring between 1991-2013 at a single regional tertiary medical centre were included. Gestational age upon delivery was sub-divided into: early preterm (<33 6/7 weeks' gestation), late preterm (34-36 6/7), early term, full term (39-40 6/7), late term (41-41 6/7), and post term (>42 0/7)...
February 9, 2017: Paediatric and Perinatal Epidemiology
https://www.readbyqxmd.com/read/28179438/management-of-continuous-positive-airway-pressure-treatment-compliance-using-telemonitoring-in-obstructive-sleep-apnoea
#18
Cecilia Turino, Jordi de Batlle, Holger Woehrle, Ana Mayoral, Anabel Lourdes Castro-Grattoni, Sílvia Gómez, Mireia Dalmases, Manuel Sánchez-de-la-Torre, Ferran Barbé
Continuous positive airway pressure (CPAP) is an effective treatment for obstructive sleep apnoea (OSA), but treatment compliance is often unsatisfactory. This study investigated the efficacy and cost-effectiveness of telemonitoring for improving CPAP compliance.100 newly diagnosed OSA patients requiring CPAP (apnoea-hypopnoea index >15 events·h(-1)) were randomised to standard management or a telemonitoring programme that collected daily information about compliance, air leaks and residual respiratory events, and initiated patient contact to resolve issues...
February 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28177332/a-comparative-study-on-oxidative-stress-role-in-nasal-breathing-impairment-and-obstructive-sleep-apnoea-syndrome
#19
D Passali, G Corallo, A Petti, M Longini, F M Passali, G Buonocore, L M Bellussi
Obstructive sleep apnoea syndrome (OSAS) is a sleep disorder that leads to metabolic abnormalities and increased cardiovascular risk. This study aimed to define the expression and clinical significance of biomarkers involved in oxidative stress in patients with OSAS. A prospective study was designed to compare outcomes of oxidative stress laboratory tests in three groups of subjects. The study involved the recruitment of three groups of subjects, 10 patients with obstructive sleep apnoea syndrome with AHI > 30; 10 patients suffering from snoring at night with AHI < 15; 10 patients with nasal respiratory impairment with AHI < 5...
December 2016: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28173893/sleep-and-circadian-rhythm-disturbance-in-bipolar-disorder
#20
A J Bradley, R Webb-Mitchell, A Hazu, N Slater, B Middleton, P Gallagher, H McAllister-Williams, K N Anderson
BACKGROUND: Subjective reports of insomnia and hypersomnia are common in bipolar disorder (BD). It is unclear to what extent these relate to underlying circadian rhythm disturbance (CRD). In this study we aimed to objectively assess sleep and circadian rhythm in a cohort of patients with BD compared to matched controls. METHOD: Forty-six patients with BD and 42 controls had comprehensive sleep/circadian rhythm assessment with respiratory sleep studies, prolonged accelerometry over 3 weeks, sleep questionnaires and diaries, melatonin levels, alongside mood, psychosocial functioning and quality of life (QoL) questionnaires...
February 8, 2017: Psychological Medicine
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