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Polysomnography

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https://www.readbyqxmd.com/read/28315606/video-ambulatory-eeg-a-good-alternative-to-inpatient-video-telemetry
#1
Rosalind Kandler, Athi Ponnusamy, Claire Wragg
PURPOSE: Video ambulatory EEG (V-AEEG) is a new technique which could add increased capacity for long term EEG monitoring to overstretched inpatient video telemetry (IPVT) services. We compare V-AEEG and IPVT for diagnostic efficacy, recording quality, patient acceptability and technologist time required. METHODS: Forty-one V-AEEG and 64 IPVT adult patients were included. Patients were investigated to diagnose attacks or to obtain polysomnography (PSG) prior to multiple sleep latency test (MSLT)...
February 28, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28303851/tonic-electromyogram-density-in-multiple-system-atrophy-with-predominant-parkinsonism-and-parkinson-s-disease
#2
Yi Wang, Yun Shen, Kang-Ping Xiong, Pei-Cheng He, Cheng-Jie Mao, Jie Li, Fu-Yu Wang, Ya-Li Wang, Jun-Ying Huang, Chun-Feng Liu
BACKGROUND: Both Parkinson's disease (PD) and multiple system atrophy (MSA) have associated sleep disorders related to the underlying neurodegenerative pathology. Clinically, MSA with predominant parkinsonism (MSA-P) resembles PD in the manifestation of prominent parkinsonism. Whether the amount of rapid eye movement (REM) sleep without atonia could be a potential marker for differentiating MSA-P from PD has not been thoroughly investigated. This study aimed to examine whether sleep parameters could provide a method for differentiating MSA-P from PD...
March 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28303676/differences-in-respiratory-arousal-threshold-in-caucasian-and-chinese-patients-with-obstructive-sleep-apnoea
#3
Richard W W Lee, Kate Sutherland, Scott A Sands, Bradley A Edwards, Tat On Chan, Susanna S S Ng, David S Hui, Peter A Cistulli
BACKGROUND AND OBJECTIVE: Ethnic differences in obstructive sleep apnoea (OSA) phenotype may not be limited to obesity and craniofacial factors. The aims of the study were to (i) compare the proportion of Caucasians and Chinese patients with a low respiratory arousal threshold (ArTH) and (ii) explore the influence of anatomical compromise on ArTH. METHODS: Interethnic comparison was conducted between cohorts of Caucasian and Chinese patients from specialist sleep disorder clinics...
March 16, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28303674/simultaneous-recording-of-ultrasound-and-polysomnography-during-natural-sleep-in-patients-with-obstructive-sleep-apnea-a-pilot-study
#4
Jeng-Wen Chen, Chih-Chung Huang, Chi-Kai Weng, Chun-Hsiang Chang, Shou-Jen Wang
Tongue base deformation may play a critical role in the phenomenon of obstructive sleep apnea, but polysomnography provides limited information regarding the effect of tongue motion during natural sleep. We reported on preliminary results of combining a novel ultrasound system and polysomnography for simultaneous recordings during natural sleep in volunteers and patients with obstructive sleep apnea. All participants underwent time-synchronized polysomnography and submental transcutaneous ultrasound examinations...
March 17, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28303621/distal-skin-vasodilation-promotes-rapid-sleep-onset-in-preterm-neonates
#5
Lucile Barcat, Pauline Decima, Emilie Bodin, Stephane Delanaud, Erwan Stephan-Blanchard, Andre Leke, Jean-Pierre Libert, Pierre Tourneux, Veronique Bach
Although sleep is of paramount importance for preterm neonates, care of the latter in a neonatal intensive care unit does not favour sleep. Given that several studies in adults have described a 'vegetative preparedness to sleep' (in which distal skin vasodilation before lights-out promotes rapid sleep onset), we looked at whether or not this process operates in preterm neonates. Sleep propensity was assessed in terms of the duration of a spontaneous episode of wakefulness (W). Skin temperatures at six body sites (the abdomen, pectoral region, eye, hand, thigh and foot) were measured (using infrared thermography) during nocturnal polysomnography in 29 9-day-old preterm neonates (postmenstrual age: 209 ± 9 days)...
March 17, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28300569/obesity-as-an-effect-modifier-in-sleep-disordered-breathing-and-post-cardiac-surgery-atrial-fibrillation
#6
Roop Kaw, Samer El Zarif, Lu Wang, James Bena, Eugene Blackstone, Reena Mehra
INTRODUCTION: As the inter-relationships of objectively-ascertained sleep disordered breathing (SDB), post-cardiac surgery atrial fibrillation (PCSAF) and obesity remain unclear; we aimed to further investigate in a clinic-based cohort. METHODS: Patients with polysomnography (PSG) and cardiac surgery (coronary artery bypass surgery and/or valvular surgery) within 3 years, from January 2009 to January 2014 were identified excluding those with pre-existing AF. Logistic models were used to determine the association of SDB (apnea hypopnea index (AHI) per 5 unit increase) and secondary predictors [central sleep apnea (CSA) (central apnea index>5) and oxygen desaturation index (ODI)] with PCSAF...
March 11, 2017: Chest
https://www.readbyqxmd.com/read/28296212/red-cell-distribution-width-and-uric-acid-in-patients-with-obstructive-sleep-apnea
#7
A Sunnetcioglu, H Gunbatar, H Yıldız
BACKGROUND: Obstructive sleep apnea (OSA), characterized by recurrent partial or complete pharyngeal closure, resulting in apnea or hypopnea, is closely associated with cardiovascular disorders (CVDs). Elevated red cell distribution width (RDW) and serum uric acid (SUA) levels have also been associated with CVDs and the consequent mortality. The aim of this study is to determine SUA levels and RDW in patients with OSA which is major a risk factor for CVDs. METHODS: This was a retrospective study involving 600 subjects evaluated by polysomnography...
March 13, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28294946/continuing-the-original-stanford-sleep-surgery-protocol-from-upper-airway-reconstruction-to-upper-airway-stimulation-our-first-successful-case
#8
Stanley Yung Liu, Robert Wayne Riley
In 1993, a surgical protocol for dynamic upper airway reconstruction in patients with obstructive sleep apnea (OSA) was published, and it became commonly known as the Stanford phase 1 and 2 sleep surgery protocol. It served as a platform on which research and clinical studies have continued to perfect the surgical care of patients with OSA. However, relapse is inevitable in a chronic condition such as OSA, and a subset of previously cured surgical patients return with complaints of excessive daytime sleepiness...
February 20, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28293310/obstructive-sleep-apnea-and-lipid-abnormalities
#9
Dimitar Karkinski, Oliver Georgievski, Pavlina Dzekova-Vidimliski, Tatjana Milenkovic, Dejan Dokic
BACKGROUND: There has been a great interest in the interaction between obstructive sleep apnea (OSA) and metabolic dysfunction, but there is no consistent data suggesting that OSA is a risk factor for dyslipidemia. AIM: The aim of this cross-sectional study was to evaluate the prevalence of lipid abnormalities in patients suspected of OSA, referred to our sleep laboratory for polysomnography. MATERIAL AND METHODS: Two hundred patients referred to our hospital with suspected OSA, and all of them underwent for standard polysomnography...
March 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28291376/cardioversion-of-atrial-fibrillation-does-not-affect-obstructive-sleep-apnea
#10
Niklas Höglund, Carin Sahlin, Milos Kesek, Steen M Jensen, Karl A Franklin
BACKGROUND: Sleep apnea is common in patients with atrial fibrillation, but the effect of the cardioversion of atrial fibrillation to sinus rhythm on central and obstructive apneas is mainly unknown. The primary aim of the study was to analyze the association between cardioversion of atrial fibrillation and sleep apneas, to investigate whether obstructive or central sleep apneas are reduced following cardioversion. A secondary objective was to study the effect on sleep quality. METHODS: Twenty-three patients with atrial fibrillation were investigated using overnight polysomnography, including esophagus pressure monitoring and ECG, before and after the cardioversion of persistent atrial fibrillation...
March 14, 2017: Upsala Journal of Medical Sciences
https://www.readbyqxmd.com/read/28287278/carotid-intima-media-thickness-is-not-associated-with-homocysteine-and-vitamin-d-levels-in-obstructive-sleep-apnea
#11
Katarína Klobučníková, Pavel Šiarnik, Monika Siváková, Helena Wágnerová, Imrich Mucska, Branislav Kollár, Peter Turčáni
Obstructive sleep apnea syndrome (OSA) is associated with increased vascular morbidity. Accelerated atherosclerosis might be one of the most important mechanisms linking OSA with the development of vascular disorders. Homocysteine (HCY) and vitamin D has been associated with atherogenesis. The aim of this study was to assess a possible association between the levels of HCY and vitamin D and the carotid intima-media thickness (cIMT), which is a known marker for subclinical atherosclerosis in patients with OSA...
March 13, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28283920/impact-of-bariatric-surgery-on-heme-oxygenase-1-inflammation-and-insulin-resistance-in-morbid-obesity-with-obstructive-sleep-apnea
#12
Raquel Tirado, Maria José Masdeu, Laura Vigil, Mercedes Rigla, Alexis Luna, Pere Rebasa, Rocío Pareja, Marta Hurtado, Assumpta Caixàs
INTRODUCTION: Morbid obesity and obstructive sleep apnea (OSA) interact at an inflammatory level. Bariatric surgery reduces inflammatory responses associated with obesity. Heme oxygenase-1 (HO-1) is an enzyme with anti-inflammatory properties, which might be increased in morbid obesity or OSA. We studied morbidly obese patients with OSA to determine: (a) HO-1 plasma concentrations according to OSA severity and their relationship with insulin resistance and inflammation and (b) the impact of bariatric surgery on HO-1 and parameters of insulin resistance and inflammation...
March 10, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28281031/pulse-transit-time-as-a-tool-to-characterize-obstructive-and-central-apneas-in-children
#13
Lucie Griffon, Alessandro Amaddeo, Jorge Olmo Arroyo, Rossana Tenconi, Serena Caggiano, Sonia Khirani, Brigitte Fauroux
PURPOSE: The characterization of apneas during polysomnography (PSG) as obstructive or central is a key element of a sleep study. Pulse transit time (PTT) has demonstrated its potential as a noninvasive surrogate marker for inspiratory efforts. The aim of the study was to assess the ability of PTT to classify apneas as central or obstructive, as compared to respiratory inductance plethysmography (RIP) in children. METHODS: Overnight PSG with simultaneous PTT recording was performed on 11 consecutive children (mean age 8...
March 9, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28273371/sleep-disordered-breathing-impact-on-efficacy-of-prolonged-exposure-therapy-for-posttraumatic-stress-disorder
#14
Christopher Reist, Andrea Gory, Michael Hollifield
There is growing evidence that sleep disturbances may impede the utility of existing therapeutic interventions for people with posttraumatic stress disorder (PTSD). This retrospective medical record review examined the hypothesis that sleep disturbance affects the outcome of prolonged exposure (PE) therapy for PTSD. We identified 18 combat veterans with PTSD who had completed PE therapy. There were 6 subjects who had sleep-disordered breathing, 5 of whom were documented by sleep polysomnography. All subjects in the sleep-disordered group took part in a minimum of 10 sessions; the mean number of sessions was comparable between the sleep-disordered group and the group without a sleep disorder...
March 8, 2017: Journal of Traumatic Stress
https://www.readbyqxmd.com/read/28272841/does-positive-airway-pressure-therapy-improve-olfactory-function
#15
Sabri Koseoğlu, Serhan Derin, Mustafa Yilmaz, Gulnihal Kutlu, Murat Sahan
BACKGROUND: Olfactory function deteriorates in patients with severe obstructive sleep apnea syndrome (OSAS). The effect of positive airway pressure (PAP) therapy on olfactory function has not been investigated before. In this study, we aimed to investigate the role of PAP therapy on olfactory impairment in patients with OSAS. METHODS: Thirty patients who had OSAS and planned for PAP therapy were included in the study. All participants underwent a detailed otorhinolaryngological examination and polysomnography...
March 8, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28271327/hypoxia-and-inflammation-indicate-significant-differences-in-the-severity-of-obstructive-sleep-apnea-within-similar-apnea-hypopnea-index-groups
#16
Aynur Yilmaz Avci, Suat Avci, Huseyin Lakadamyali, Ufuk Can
PURPOSE: We determined whether hypoxia parameters are associated with C-reactive protein (CRP), mean platelet volume (MPV), white matter hyperintensity (WMH), and the severity of obstructive sleep apnea (OSA), and also evaluated whether hypoxia parameters, CRP, MPV, and WMH differ in patients with similar apnea-hypopnea index (AHI) scores. METHODS: A total of 297 patients, who were evaluated using polysomnography, were assessed retrospectively. The measured hypoxia parameters included total sleep time with oxygen saturation <90% (ST90), percentage of cumulative time with oxygen saturation <90% (CT90), and lowest oxygen saturation (min SaO2)...
March 7, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28269458/towards-detection-of-sleep-apnea-events-by-combining-different-non-contact-measurement-modalities
#17
Abdul Q Javaid, Carlo M Noble, Russell Rosenberg, Mary A Weitnauer
In this work, we extract features from an under-the-mattress impulse radio ultra-wide band (IR-UWB) radar and a microphone, placed on the side table of the bed, to classify epochs belonging to normal sleep and those that contain an apnea event in them. Sleep apnea is the most common form of sleep related breathing disorder in adults with an estimated prevalance of 5-15%. The common diagnostic process for sleep apnea, polysomnography (PSG), involves sleeping in well-equipped sleep clinics. The cost and discomfort associated with the process has spurred research towards the design of portable home-based monitoring devices...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269370/bed-based-instrumentation-for-unobtrusive-sleep-quality-assessment-in-severely-disabled-autistic-children
#18
Charles Carlson, Ahmad Suliman, Punit Prakash, David Thompson, Shangxian Wang, Bala Natarajan, Steve Warren
The relationship between sleep quality and daytime wellness and performance in severely disabled, autistic children is not well understood. While polysomnography and, more recently, actigraphy serve as means to obtain sleep assessment data from neurotypical children and adults, these techniques are not well-suited to severely autistic children. This paper presents recent progress on a bed sensor suite that can unobtrusively track physiological and behavioral parameters used to assess sleep quality. Electromechanical films and load cells provide data that yield heart rate, respiration rate, center of position, in-and-out-of-bed activity, and general movement, while thermocouples are used to detect bed-wetting events...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269332/automatic-sleep-stage-classification-using-ear-eeg
#19
Andreas Stochholm, Kaare Mikkelsen, Preben Kidmose
Sleep assessment is of great importance in the diagnosis and treatment of sleep disorders. In clinical practice this is typically performed based on polysomnography recordings and manual sleep staging by experts. This procedure has the disadvantages that the measurements are cumbersome, may have a negative influence on the sleep, and the clinical assessment is labor intensive. Addressing the latter, there has recently been encouraging progress in the field of automatic sleep staging [1]. Furthermore, a minimally obtrusive method for recording EEG from electrodes in the ear (ear-EEG) has recently been proposed [2]...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269102/sleep-spindle-identification-on-eeg-signals-from-polysomnographie-recordings-using-correntropy
#20
Sebastian Ulloa, Pablo A Estevez, Pablo Huijse, Claudio M Held, Claudio A Perez, Rodrigo Chamorro, Marcelo Garrido, Cecilia Algarin, Patricio Peirano
Sleep spindles (SSs) are characteristic electroencephalographic (EEG) waveforms of sleep stages N2 and N3. One of the main problems associated with SS detection is the high number of false positives. In this paper we propose a new periodogram based on correntropy to detect SSs and enhance their characterization. Correntropy is a generalized correlation, under the information theoretic learning framework. A non-negative matrix factorization decomposition of correntropy allows us to obtain a new periodogram, which shows an improved resolution capability compared to the conventional power spectrum density...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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