Automated sleep stage classification based on tracheal body sound and actigraphy.

Automated sleep stage classification based on tracheal body sound and actigraphy. Ger Med Sci. 2019;17:Doc02 Authors: Kalkbrenner C, Brucher R, Kesztyüs T, Eichenlaub M, Rottbauer W, Scharnbeck D Abstract The current gold standard for assessment of most sleep disorders is the in-laboratory polysomnography (PSG). This approach produces high costs and inconveniences for the patients. An accessible and simple preliminary screening method to diagnose the most common sleep disorders and to decide whether a PSG is necessary or not is therefore desirable. A minimalistic type-4 monitoring system which utilized tracheal body sound and actigraphy to accurately diagnose the obstructive sleep apnea syndrome was previously developed. To further improve the diagnostic ability of said system, this study aims to examine if it is possible to perform automated sleep staging utilizing body sound to extract cardiorespiratory features and actigraphy to extract movement features. A linear discriminant classifier based on those features was used for automated sleep staging using the type-4 sleep monitor. For validation 53 subjects underwent a full-night screening at Ulm University Hospital using the developed sleep monitor in addition to polysomnography. To assess sleep stages from PSG, a trained technician manually evaluated EEG, EOG, and EMG recordings. The classifier reached 86.9% accuracy and a Kappa of 0.69 for sleep/wake classification, 76.3% accuracy and a Kappa of ...
Source: GMS German Medical Science - Category: General Medicine Tags: Ger Med Sci Source Type: research

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CONCLUSION: As part of this sonographic assessment of the upper respiratory tract, landmarks could be identified in patients with OSA that correlated with the severity of the disease. PMID: 31119334 [PubMed - as supplied by publisher]
Source: HNO - Category: ENT & OMF Tags: HNO Source Type: research
Conclusions: Laparoscopic sleeve gastrectomy is a safe and effective procedure, with good results in the short and medium term. Long-term follow-up reveals a tendency to weight regain after approximately 2 years from primary surgery, with the need for revisional surgery in some cases. PMID: 31118990 [PubMed]
Source: Videosurgery and Other Miniinvasive Techniques - Category: Surgery Tags: Wideochir Inne Tech Maloinwazyjne Source Type: research
Authors: Chabowski M, Juzwiszyn J, Bolanowska Z, Brzecka A, Jankowska-Polańska B Abstract Chronic nonmalignant pulmonary diseases impose a heavy burden on patients, generate health-care costs, and contribute to poor health-related quality of life. It has been found that a wide range of factors negatively affects quality of life, but the role of acceptance of illness needs to be further investigated. The aim of the study was to evaluate the relationship between acceptance of illness and quality of life in patients with chronic nonmalignant pulmonary diseases. The study encompassed 200 patients of the mean age 58&nb...
Source: Advances in Experimental Medicine and Biology - Category: Research Tags: Adv Exp Med Biol Source Type: research
Increased odds ratios for cancer observed in different categories of OSA for women, not men
Source: The Doctors Lounge - Oncology - Category: Cancer & Oncology Tags: Gynecology, Oncology, Pulmonology, Journal, Source Type: news
Publication date: Available online 22 May 2019Source: Journal of Chemical NeuroanatomyAuthor(s): Caroline E. Boyle, Anjum Parkar, Amanda Barror, Leszek KubinAbstractIn obstructive sleep apnea (OSA) patients, contraction of the muscles of the tongue is needed to protect the upper airway from collapse. During wakefulness, norepinephrine directly excites motoneurons that innervate the tongue and other upper airway muscles but its excitatory effects decline during sleep, thus contributing to OSA. In addition to motoneurons, NE may regulate activity in premotor pathways but little is known about these upstream effects. To start...
Source: Journal of Chemical Neuroanatomy - Category: Neuroscience Source Type: research
Conclusions: Sleepy driving and a high risk of OSA was prevalent among the study population of male truck drivers in Saudi Arabia. Not getting good-quality sleep and driving experience from 6 to 10 years contributes to the accident risk among these truck drivers. PMID: 31120335 [PubMed - as supplied by publisher]
Source: Traffic Injury Prevention - Category: Accident Prevention Authors: Tags: Traffic Inj Prev Source Type: research
Condition:   Obstructive Sleep Apnea Intervention:   Drug: Remifentanil Infusion Sponsor:   Washington University School of Medicine Completed
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
(Am J Obstet Gynecol. 2018;219(2):147–161) Sleep-disordered breathing (SDB) consists of a spectrum of respiratory and ventilation abnormalities ranging from snoring to obstructive sleep apnea and is an increasingly common condition in the nonobstetric population. It can be associated with morbidity. The incidence of SDB in pregnant women is unknown and many cases likely go undiagnosed. This systematic review and metaanalysis aimed to determine whether pregnant women diagnosed with SDB were more likely to have adverse intrapartum and perinatal outcomes compared with control subjects.
Source: Obstetric Anesthesia Digest - Category: Anesthesiology Tags: Editorials and Reviews Source Type: research
AbstractPurposeObstructive sleep apnea syndrome (OSAS) is associated with alterations in immune system which may lead to serious complications. The aim of this study was to explore lymphocyte populations in OSAS with special attention to the Fas-positive cells.MethodsFifty-one patients with confirmed OSA and 20 healthy subjects were investigated. The OSA severity indices, data concerning comorbidities, and markers of inflammation and metabolic disorders were collected. Flow cytometry was used to analyze the lymphocyte profile and expression of Fas receptors (CD95). Concentration of adiponectin, IL-1 β, TNF-α, an...
Source: Sleep and Breathing - Category: Respiratory Medicine Source Type: research
Mandibular Advancement Devices (MAD) have been reported to be an alternative treatment to CPAP in moderate to severe obstructive sleep apnea (OSA) cases. The design of MAD has a major influence on its success ...
Source: BMC Oral Health - Category: Dentistry Authors: Tags: Research article Source Type: research
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