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https://www.readbyqxmd.com/read/28448949/utility-of-the-fitbit-flex-to-evaluate-sleep-in-major-depressive-disorder-a-comparison-against-polysomnography-and-wrist-worn-actigraphy
#1
Jesse D Cook, Michael L Prairie, David T Plante
BACKGROUND: Sleep disturbance is a common and important component of affective illness. Fitness activity trackers are emerging as alternative means to estimate sleep in psychiatric patients; however, their ability to quantify sleep in mood disorders has not been empirically evaluated. Thus, this study sought to evaluate the utility of the Fitbit Flex (FBF) to estimate sleep in patients with major depressive disorder (MDD) relative to gold standard polysomnography (PSG) and a widely-used actigraph (Actiwatch-2; AW-2)...
April 19, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28439197/clinical-and-polysomnographic-features-of-children-evaluated-with-polysomnography-in-pediatric-sleep-laboratory
#2
Hatice Ezgi Barış, Yasemin Gökdemir, Ela Erdem Eralp, Nilay Baş İkizoğlu, Fazilet Karakoç, Bülent Karadağ, Refika Ersu
AIM: Sleep disordered breathing is a common problem in childhood that encompasses a spectrum of disorders extending from primary snoring to obstructive sleep apnea. This study aims to investigate the results of children undergoing evaluation with polysomnography in the sleep laboratory of a tertiary care hospital. MATERIAL AND METHODS: Demographic and clinical features as well as sleep associated symptoms, scores of pediatric sleep questionnaire and Pittsburgh sleep quality index and polysomnography results are retrospectively evaluated...
March 2017: Türk Pediatri Arşivi
https://www.readbyqxmd.com/read/28431626/sleep-patterns-in-villagers-and-urban-african-volunteers-in-a-humid-tropical-climate-influence-of-accessibility-to-electric-light
#3
Alain Buguet, Pascal Bogui, Stéphane Picot, Raymond Cespuglio
Recent publications focusing on sleep-wake alternation, using actigraphic recordings in hunter-gatherers, stressed the existence of a potential effect of electricity availability on sleep habits. These reports prompted us to achieve a new analysis of the polysomnographic data already obtained in healthy African volunteers in equatorial Africa during two different investigations. Comparison of the 24-h polysomnographic sleep patterns were done between 9 volunteers sleeping in a laboratory in Abidjan (Abidjan cohort) and 11 villagers living in electricity-free bush villages (Sinfra cohort)...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28431034/effects-of-sleep-loss-on-subjective-complaints-and-objective-neurocognitive-performance-as-measured-by-the-immediate-post-concussion-assessment-and-cognitive-testing
#4
Ryan P J Stocker, Hassen Khan, Luke Henry, Anne Germain
Objective: This study examined the effects of total and partial sleep deprivation on subjective symptoms and objective neurocognitive performance, as measured by the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) in a sample of healthy adults. Method: One-hundred and two, right-handed, healthy participants (between ages 18 and 30 years old) completed three consecutive nights in the sleep laboratory with concurrent continuous polysomnography monitoring...
May 1, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28427400/monitoring-mandibular-movements-to-detect-cheyne-stokes-breathing
#5
Jean-Benoît Martinot, Jean-Christian Borel, Nhat-Nam Le-Dong, Hervé Jean-Pierre Guénard, Valerie Cuthbert, Philip E Silkoff, David Gozal, Jean-Louis Pepin
BACKGROUND: The patterns of mandibular movements (MM) during sleep can be used to identify increased respiratory effort periodic large-amplitude MM (LPM), and cortical arousals associated with "sharp" large-amplitude MM (SPM). We hypothesized that Cheyne Stokes breathing (CSB) may be identified by periodic abnormal MM patterns. The present study aims to evaluate prospectively the concordance between CSB detected by periodic MM and polysomnography (PSG) as gold-standard. The present study aims to evaluate prospectively the concordance between CSB detected by periodic MM and polysomnography (PSG) as gold-standard...
April 20, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28418947/sleep-induced-apraxia-of-eyelid-opening
#6
Sara N Reggie, John J Chen, Michael S Lee, Sophia M Chung
BACKGROUND: Apraxia of eyelid opening (AEO) primarily has been described as bilateral loss of volitional ability to open the eyes at certain times and often associated with neurodegenerative disease. Rarely, it can occur in isolation and as an idiopathic phenomenon. There are a few reports of unilateral AEO only on awakening from sleep. We report an additional 11 patients with this unusual variation of AEO. METHODS: Retrospective, observational case series of patients collected from 3 separate neuro-ophthalmology practices...
April 14, 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28416458/on-the-origins-of-sex-based-differences-in-respiratory-disorders-lessons-and-hypotheses-from-stress-neuroendocrinology-in-developing-rats
#7
REVIEW
Jean-Philippe Rousseau, Luana Tenorio-Lopes, Cécile Baldy, Tara Adele Janes, Stéphanie Fournier, Richard Kinkead
The environment plays a critical role in shaping development and function of the brain. Stress, especially when experienced early in life, can interfere with these processes. In the context of respiratory control, perinatal stress can therefore alter the ability to achieve the "fine-tuning" necessary for proper detection of chemosensory stimuli and production of an adequate motor (respiratory) command. Depending on the timing, intensity, and duration, the detrimental consequences of perinatal exposure to adverse conditions on the respiratory network become manifest at various life stages and can persist into adulthood...
April 14, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28414048/light-and-the-laboratory-mouse
#8
Stuart N Peirson, Laurence A Brown, Carina A Pothecary, Lindsay A Benson, Angus S Fisk
Light exerts widespread effects on physiology and behaviour. As well as the widely-appreciated role of light in vision, light also plays a critical role in many non-visual responses, including regulating circadian rhythms, sleep, pupil constriction, heart rate, hormone release and learning and memory. In mammals, responses to light are all mediated via retinal photoreceptors, including the classical rods and cones involved in vision as well as the recently identified melanopsin-expressing photoreceptive retinal ganglion cells (pRGCs)...
April 13, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28412644/an-association-of-health-behaviors-with-depression-and-metabolic-risks-data-from-2007-to-2014-u-s-national-health-and-nutrition-examination-survey
#9
Ying Liu, Ifeoma D Ozodiegwu, Yang Yu, Rick Hess, Ronghai Bie
BACKGROUND: Both depression and metabolic syndrome (MetS) confer an increased risk of developing type 2 diabetes (T2D) and cardiovascular disease. Accumulating evidence suggests healthy behaviors are crucial to maintain, improve and manage chronical disease and mental health; and unhealthy diet and sedentary behavior were found two major risk factors of MetS. The objective of this study was to investigate whether health behaviors (alcohol consumption, smoking, diet and recreational physical activity) are associated with depression and metabolic syndrome simultaneously...
April 8, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28402089/perioperative-management-of-obstructive-sleep-apnea-a-systematic-review
#10
Ruggero Corso, Vincenzo Russotto, Cesare Gregoretti, Davide Cattano
Obstructive sleep apnea (OSA) is the leading sleep disordered breathing condition, with a prevalence rate of moderate to severe OSA of approximately 10 - 17% in the general population. Its prevalence in the surgical population seems to be higher. However, a proportion of up to 60% of patients may not have a formal diagnosis at the moment of preoperative visit. OSA is associated with a number of comorbidities and increased perioperative risks. However, most interventions for the perioperative management of OSA patients lack high quality evidence...
April 11, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28397994/prevalence-of-obesity-hypoventilation-syndrome-in-ambulatory-obese-patients-attending-pathology-laboratories
#11
Jean-Christian Borel, Fabrice Guerber, Ingrid Jullian-Desayes, Marie Joyeux-Faure, Nathalie Arnol, Nellie Taleux, Renaud Tamisier, Jean-Louis Pépin
BACKGROUND AND OBJECTIVE: The prevalence of obesity hypoventilation syndrome (OHS) in the unselected obese is unknown. Our objectives were: (i) to determine the prevalence of OHS in ambulatory obese patients not previously referred to a pulmonologist for suspicion of sleep breathing disorders and (ii) to assess whether venous bicarbonate concentration [HCO3(-)v ] can be used to detect OHS. METHODS: In this prospective multicentric study, we measured [HCO3(-)v ] in consenting obese patients attending pathology analysis laboratories...
April 11, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28394943/sleep-continuity-is-positively-correlated-with-sleep-duration-in-laboratory-nighttime-sleep-recordings
#12
Akifumi Kishi, Hans P A Van Dongen, Benjamin H Natelson, Amy M Bender, Luciana O Palombini, Lia Bittencourt, Sergio Tufik, Indu Ayappa, David M Rapoport
Sleep duration varies widely across individuals and appears to be trait-like. Differences in the stability of underlying sleep processes may underlie this phenomenon. To investigate underlying mechanisms, we examined the relationship between sleep duration and sleep continuity in baseline polysomnography (PSG) recordings from three independently collected datasets: 1) 134 healthy controls (ages 37 ± 13 years) from the São Paulo Epidemiologic Sleep Study, who spent one night in a sleep laboratory, 2) 21 obstructive sleep apnea (OSA) patients who were treated with continuous positive airway pressure for at least 2 months (45 ± 12 years, respiratory disturbance index <15), who spent one night in a sleep laboratory with previous experience of multiple PSG studies, and 3) 62 healthy controls (28 ± 6 years) who, as part of larger experiments, spent 2 consecutive nights in a sleep laboratory...
2017: PloS One
https://www.readbyqxmd.com/read/28392039/effect-of-arterial-puncture-on-ventilation
#13
Ashima Synghal Sahni, Hemil Gonzalez, Aiman Tulaimat
BACKGROUND: Clinicians frequently assume that during arterial puncture for measuring arterial blood gases patients hyperventilate from pain and anxiety. This assumption leads clinicians to falsely interpret a PaCO2 and pH near the upper limit of normal as a chronic respiratory acidosis corrected by an acute respiratory alkalosis. OBJECTIVE: Determine if participants hyperventilate during arterial puncture from pain and anxiety. METHODS: We recruited participants from a pulmonary function laboratory referred for arterial blood gas measurement...
April 6, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28389910/sleep-duration-and-quality-in-heart-failure-patients
#14
Anke Türoff, Ulrich Thiem, Henrik Fox, Jens Spießhöfer, Thomas Bitter, Renaud Tamisier, Naresh M Punjabi, Dieter Horstkotte, Olaf Oldenburg
PURPOSE: Sleep-disordered breathing (SDB) is highly prevalent in patients with heart failure and reduced left ventricular ejection fraction (HF-REF). SDB is classified as predominant obstructive (OSA) or central (CSA) and may alter sleep duration, sleep quality, and quality of life. This study describes sleep quality and duration in well-characterized cohorts of these patients. METHODS: Two hundred fifty consecutive patients with HF-REF (NYHA class ≥II, ejection fraction ≤45%) underwent cardiac and pulmonary examination, plus full attended in-hospital overnight polysomnography (PSG)...
April 7, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28387543/effect-of-4-aminopyridine-on-genioglossus-muscle-activity-during-sleep-in-healthy-adults
#15
Luigi Taranto-Montemurro, Scott A Sands, Ali Azarbarzin, Melania Marques, Camila M de Melo, Bradley A Edwards, Danny J Eckert, Ludovico Messineo, David P White, Andrew Wellman
RATIONALE: The reduction in upper airway muscle activity from wakefulness to sleep plays a key role in the development of obstructive sleep apnea. Potassium (K+) channels have been recently identified as the downstream mechanisms through which hypoglossal motoneuron membrane excitability is reduced both in non-REM (NREM) and REM sleep. In animal models, the administration of 4-aminopyridine (4-AP), a voltage-gated K+ channel blocker, increased genioglossus activity during wakefulness and across all sleep stages...
April 7, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28379985/a-real-world-comparison-of-apnea-hypopnea-indices-of-positive-airway-pressure-device-and-polysomnography
#16
Ritwick Agrawal, Julie A Wang, Anita G Ko, Joanne E Getsy
The apnea hypopnea index (AHI) reported by positive airway pressure (PAP) device is widely used in clinical practice, yet its correlation with standardized AHI obtained during the sleep study is not established. The current study was conducted to investigate the correlation between AHI estimated by the PAP device and reported on the smart card with the AHI found during the PAP polysomnography (PSG) in the "real world" setting at an academic sleep center. We retrospectively reviewed the medical records of 280 patients who underwent a PAP titration PSG at Drexel sleep center, and were later prescribed a PAP device...
2017: PloS One
https://www.readbyqxmd.com/read/28379355/neuromodulation-in-chemosensory-pathways
#17
Jeremy C McIntyre, Nicolas Thiebaud, John P McGann, Takaki Komiyama, Markus Rothermel
Interactions with the environment depend not only on sensory perception of external stimuli but also on processes of neuromodulation regulated by the internal state of an organism. These processes allow regulation of stimulus detection to match the demands of an organism influenced by its general brain state (satiety, wakefulness/sleep state, attentiveness, arousal, learning etc.). The sense of smell is initiated by sensory neurons located in the nasal cavity that recognize environmental odorants and project axons into the olfactory bulb (OB), where they form synapses with several types of neurons...
April 4, 2017: Chemical Senses
https://www.readbyqxmd.com/read/28378363/impact-of-sleep-inertia-on-visual-selective-attention-for-rare-targets-and-the-influence-of-chronotype
#18
Hannah K Ritchie, Tina M Burke, Tristan B Dear, Andrew W Mchill, John Axelsson, Kenneth P Wright
Sleep inertia is affected by circadian phase, with worse performance upon awakening from sleep during the biological night than biological day. Visual search/selective visual attention performance is known to be sensitive to sleep inertia and circadian phase. Individual differences exist in the circadian timing of habitual wake time, which may contribute to individual differences in sleep inertia. Because later chronotypes awaken at an earlier circadian phase, we hypothesized that later chronotypes would have worse visual search performance during sleep inertia than earlier chronotypes if awakened at habitual wake time...
April 4, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28377708/increased-evoked-potentials-to-arousing-auditory-stimuli-during-sleep-implication-for-the-understanding-of-dream-recall
#19
Raphael Vallat, Tarek Lajnef, Jean-Baptiste Eichenlaub, Christian Berthomier, Karim Jerbi, Dominique Morlet, Perrine M Ruby
High dream recallers (HR) show a larger brain reactivity to auditory stimuli during wakefulness and sleep as compared to low dream recallers (LR) and also more intra-sleep wakefulness (ISW), but no other modification of the sleep macrostructure. To further understand the possible causal link between brain responses, ISW and dream recall, we investigated the sleep microstructure of HR and LR, and tested whether the amplitude of auditory evoked potentials (AEPs) was predictive of arousing reactions during sleep...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28377323/brain-injury-results-in-lower-levels-of-melatonin-receptors-subtypes-mt1-and-mt2
#20
Nicole D Osier, Lan Pham, Bunny J Pugh, Ava Puccio, Dianxu Ren, Yvette P Conley, Sheila Alexander, C Edward Dixon
BACKGROUND: Traumatic brain injury (TBI) is a devastating and costly acquired condition that affects individuals of all ages, races, and geographies via a number of mechanisms. The effects of TBI on melatonin receptors remain unknown. PURPOSE: The purpose of this study is to explore whether endogenous changes in two melatonin receptor subtypes (MT1 and MT2) occur after experimental TBI. SAMPLE: A total of 25 adult male Sprague Dawley rats were used with 6 or 7 rats per group...
April 2, 2017: Neuroscience Letters
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