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sleep lab

Ingo Fietze, Charlotte Barthe, Matthias Hölzl, Martin Glos, Sandra Zimmermann, Ralf Bauer-Diefenbach, Thomas Penzel
INTRODUCTION: Noise is one of the factors that can seriously disturb sleep, and sound volume is an important factor in this context. One strategy involves avoiding exposure to sounds in the night, while entail the minimization of background noise in a bedroom. The goal of this study was to investigate the effect of systematic sound attenuation on nocturnal sleep by influencing sound volume and reverberation within the context of room acoustics. MATERIALS AND METHODS: On this basis, we designed a randomized, controlled crossover trial investigating 24 healthy sleepers (15 men and 9 women, aged 24...
September 2016: Noise & Health
Theodore Pincus
An MDHAQ/RAPID3 (multidimensional health assessment questionnaire/routine assessment of patient index data) was developed from the HAQ over 25 years, based on observations made from completion by every patient (with all diagnoses) at every routine rheumatology visit since 1980. Modification of the HAQ was viewed as similar to improving a laboratory test, with a primary focus on clinical value for diagnosis, prognosis, and/or management, as well as feasibility for minimal effect on clinical workflow. Rigorous attention, was also directed to validity, reliability, other methodologic and technological considerations, but after clinical value and feasibility were established...
September 2016: Clinical and Experimental Rheumatology
Osman Aydoğan, Ali Öter, Kerim Güney, M Kemal Kıymık, Deniz Tuncel
Obstructive sleep apnea is a sleep disorder which may lead to various results. While some studies used real-time systems, there are also numerous studies which focus on diagnosing Obstructive Sleep Apnea via signals obtained by polysomnography from apnea patients who spend the night in sleep laboratory. The mean, frequency and power of signals obtained from patients are frequently used. Obstructive Sleep Apnea of 74 patients were scored in this study. A visual-scoring based algorithm and a morphological filter via Artificial Neural Networks were used in order to diagnose Obstructive Sleep Apnea...
December 2016: Journal of Medical Systems
Mojtaba Farjam, Hossein Bahrami, Ehsan Bahramali, Javad Jamshidi, Alireza Askari, Habibollah Zakeri, Reza Homayounfar, Hossein Poustchi, Reza Malekzadeh
BACKGROUND: Non-communicable diseases (NCDs) have become the main causes of morbidity and mortality even in rural areas of many developing countries, including Iran. In view of this increased risk, Fasa Cohort Study (FACS) has been established to assess the risk factors for NCDs with the ultimate goal of providing optimal risk calculators for Iranian population and finding grounds for interventions at the population level. METHODS: In a population-based cohort, at least 10,000 people within the age range of 35 to 70 years old from Sheshdeh, the suburb of Fasa city and its 24 satellite villages are being recruited...
October 18, 2016: BMC Public Health
Chu-Shiu Li, June Han Lee, Chwen-Chi Liu, Yan-Lan Chan, Christopher Wen, Mu-Lin Chiu, Min Kuang Tsai, Shan Pou Tsai, Jackson Pui Man Wai, Chwen Keng Tsao, Xifeng Wu, Chi Pang Wen
Widowhood has been increasingly encountered because of increasing longevity of women, often characterized by social stigmatization and poor physical and mental health. However, applied research to overcome its adversity has been quite limited. The goal of this study is to explore the role of physical activity in improving the health of widows.A cohort of 446,582 adults in Taiwan who successively participated in a comprehensive medical screening program starting in 1994, including 232,788 women, was followed up for mortality until 2008...
August 2016: Medicine (Baltimore)
Brice Faraut, Thomas Andrillon, Marie-Françoise Vecchierini, Damien Leger
Sleep specialists have proposed measures to counteract the negative short- and long-term consequences of sleep debt, and some have suggested the nap as a potential and powerful "public health tool". Here, we address this countermeasure aspect of napping viewed as an action against sleep deprivation rather than an action associated with poor health. We review the physiological functions that have been associated positively with napping in both public health and clinical settings (sleep-related accidents, work and school, and cardiovascular risk) and in laboratory-based studies with potential public health issues (cognitive performance, stress, immune function and pain sensitivity)...
September 13, 2016: Sleep Medicine Reviews
Christophe Colas-Ribas, Isabelle Signolet, Samir Henni, Mathieu Feuillloy, Frédéric Gagnadoux, Pierre Abraham
The prevalence of pulmonary disease in patients with peripheral artery disease (PAD) has not been extensively studied. Recent evidence has shown that ∼20% of the patients have an atypical chest transcutaneous oxygen pressure (TcpO2) pattern during exercise, which suggests walking-induced hypoxemia. The main objectives of this study were to: (1) describe in a retrospective way the characteristics of the patients suffering from claudication, who attended a treadmill testing in our laboratory, (2) assess the prevalence of known or unknown pulmonary disease...
October 2016: Medicine (Baltimore)
Birgit Kleim, Julia Wysokowsky, Nuria Schmid, Erich Seifritz, Björn Rasch
STUDY OBJECTIVE: To investigate sleep's effect in the immediate aftermath of experiencing an analog trauma in the laboratory on reducing intrusive emotional memory formation. METHODS: Sixty-five healthy women were exposed to an experimental laboratory trauma. They viewed a neutral and a trauma film in the laboratory and were randomly allocated to either a group that slept following film viewing or a group that remained awake. Sleep was recorded with electroencephalogram in a subgroup of participants in the sleep group...
October 10, 2016: Sleep
Harini C Krishnan, Catherine E Gandour, Joshua L Ramos, Mariah C Wrinkle, Joseph J Sanchez-Pacheco, Lisa C Lyons
STUDY OBJECTIVE: Insufficient sleep in individuals appears increasingly common due to the demands of modern work schedules and technology use. Consequently, there is a growing need to understand the interactions between sleep deprivation and memory. The current study determined the effects of acute sleep deprivation on short- and long-term associative memory using the marine mollusk Aplysia californica, a relatively simple model system well known for studies of learning and memory. DESIGN: Aplysia were sleep deprived for 9 h using context changes and tactile stimulation prior to or after training using the operant learning paradigm, learning that food is inedible (LFI)...
October 10, 2016: Sleep
Adam C Raikes, Sydney Y Schaefer
STUDY OBJECTIVES: A number of subjective and objective studies provide compelling evidence of chronic postconcussion changes in sleep, yet very little is known about the acute effects of concussion on sleep quality and quantity. Therefore, the purpose of this prospective pilot study was to use actigraphy to examine the changes in sleep quality and quantity acutely following concussion at home rather than in a hospital or sleep laboratory. METHODS: Seventeen young adults (7 with acute concussion, 10 controls) were recruited for this study...
October 10, 2016: Sleep
Thomas Roth, Jed Black, Raymond Cluydts, Pascal Charef, Marzia Cavallaro, Fabrice Kramer, Gary Zammit, James Walsh
OBJECTIVE: Sleep laboratory study to determine the dose-related efficacy and safety of almorexant in elderly patients with primary chronic insomnia. METHODS: Patients aged ≥65 years with primary insomnia were enrolled into a prospective, randomized, double-blind, placebo-controlled, multicenter dose-finding study with a five-period, five-way Latin square cross-over design. Patients were randomized to one of 10 unique sequences of two-night treatment with oral almorexant 25, 50, 100, or 200 mg capsules, or matching placebo...
October 10, 2016: Sleep
Yun Li, Alexandros N Vgontzas, Julio Fernandez-Mendoza, Ilia Kritikou, Maria Basta, Slobodanka Pejovic, Jordan Gaines, Edward O Bixler
STUDY OBJECTIVES: Objective and subjective measures of excessive daytime sleepiness (EDS) are only weakly associated. No study, however, has examined whether these two measures of EDS differ in terms of underlying mechanisms and prognostic value. Pro-inflammatory cytokines, i.e., interleukin-6 (IL-6) appear to promote sleepiness/fatigue, while the stress hormone cortisol promotes vigilance. We hypothesized that objective sleepiness is associated with increased levels of IL-6 and decreased levels of cortisol...
October 10, 2016: Sleep
Jaspal Singh, R K Sharma, A K Gupta
Computers are used extensively in sleep labs for polysomnography and for assistance in sleep staging. However, the test is highly inconvenient to the patient and requires availability of specially equipped sleep labs. Alternative approaches that enable unobtrusive in-home sleep staging with ECG or other signals are highly desirable. In this paper we describe a method that can be used for distinction of REM and NREM sleep stages using spectral and non-linear features of ECG derived RR interval series. To test the accuracy of the system, we extracted the RR interval series from sleep studies of 20 young healthy individuals...
September 23, 2016: Computers in Biology and Medicine
Mulalibieke Heizhati, Nanfang Li, Liang Shao, Xiaoguang Yao, Yingchun Wang, Jing Hong, Ling Zhou, Delian Zhang, Guijuan Chang, Suofeiya Abulikemu
PURPOSE: Sleep architecture can be affected by alteration in circulating lipopolysaccaride and cytokines. However, still unknown are the effects of lipopolysaccaride-binding protein (LBP) on sleep architecture. Therefore, potential relationship between alteration in serum LBP concentrations and sleep architecture was analyzed. METHODS: This is a cross-sectional study. Consecutive 54 hypertensive males, aged 30-65 years. and with no obstructive sleep apnea via polysomnography, were recruited...
October 13, 2016: Sleep & Breathing, Schlaf & Atmung
Lianne M Tomfohr-Madsen, Tavis S Campbell, Gerald F Giesbrecht, Nicole L Letourneau, Linda E Carlson, Joshua W Madsen, Sona Dimidjian
BACKGROUND: Clinically significant psychological distress in pregnancy is common, with epidemiological research suggesting that between 15 and 25 % of pregnant women experience elevated symptoms of stress, anxiety, and depression. Untreated psychological distress in pregnancy is associated with poor obstetrical outcomes, changes in maternal physiology, elevated incidence of child physical and psychological disorders, and is predictive of maternal postpartum mood disorders. Despite the wide-ranging impact of antenatal psychological distress on mothers and their children, there is a gap in our knowledge about the most effective treatments that are available for psychological distress experienced in pregnancy...
October 13, 2016: Trials
I M Madaeva, O N Berdina, N V Semenova, L A Grebenkina, V V Madaev, L I Kolesnikova
AIM: To reveal gender characteristics of the sleep structure in obstructive sleep apnea syndrome (OSAS) during polysomnographic monitoring (PSGM). SUBJECTS AND METHODS: According to the results of a pre-survey using an apnea screening questionnaire, the investigation included 58 women (body mass index (BMI), 38.2±2.1 kg/m2) and 75 men (BMI, 34.2±1.8 kg/m2), aged 50-55 years, who complained about snoring, sleep apnea, and daytime hypersomnia. Copy-pair groups were formed and compared after objectively confirming the diagnosis by PSGM made at a specialized sleep laboratory, by applying the GRASS-TELEFACTOR Twin PSG system (Comet) with an integrated SPM-1 sleep module (USA) in accordance with the standard procedure...
2016: Terapevticheskiĭ Arkhiv
Timothy D Nelson, Katherine M Kidwell, Maren Hankey, Jennifer Mize Nelson, Kimberly Andrews Espy
OBJECTIVE: Although numerous studies have documented the effects of sleep loss on executive control (EC) and related abilities, research examining the impact of early EC on subsequent sleep problems is lacking. Therefore, the current study reports on a longitudinal investigation of EC in preschool as a predictor of sleep-wake problems and daytime sleepiness in early adolescence. PARTICIPANTS: The participants were 141 children (48.6% female) recruited from the community for a longitudinal study spanning preschool through early adolescence, with an oversampling for high sociodemographic risk (34...
October 11, 2016: Behavioral Sleep Medicine
Yan Wang, Yue-Chang Yang, Dan-Mei Lan, Hui -Juan Wu, Zhong-Xin Zhao
PURPOSE: Sleep disturbance is common in Parkinson's disease (PD) and negatively impacts quality of life. There is little data on how dopamine agonists influence nocturnal sleep in PD, particularly in sleep laboratory data to measure sleep parameters and their changes objectively. The goal of this open-label study was to objectively evaluate the effect of rotigotine on sleep in PD patients by video-polysomnographic methods. METHODS: A total of 25 PD patients with complaints of nocturnal sleep impairment were enrolled...
October 11, 2016: Sleep & Breathing, Schlaf & Atmung
Ali Yilmaz, Melike Akçaalan
BACKGROUND: Clinical detection of anatomic narrowing of the upper airway may faciliate early recognition of obstructive sleep apnea (OSA). The aim of this study was to investigate whether anthropometric measurement can be used to predict OSA. MATERIALS AND METHODS: 147 subject were included from those who were referred patients for suspected sleep apnea to our sleep laboratory. All patients were divided 2 groups with respect to the apnea-hypopnea index. The first group was diagnosed as OSA, AHI greater than 5...
October 7, 2016: Folia Morphologica (Warsz)
Jacques Theitler, Daniella Dassa, Revital Gandelman-Marton
BACKGROUND: The electroencephalogram (EEG) can support the diagnosis of epilepsy, diagnose nonconvulsive status epilepticus, and aid in the classification of epileptic seizures. Its contribution to the diagnosis of other medical conditions or to decision making in other clinical situations was not established. Practically, EEG labs frequently encounter EEG referrals that are not based on current recommendations. OBJECTIVES: To assess the value of inpatient EEG in medical decision making...
October 6, 2016: European Journal of Clinical Investigation
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