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https://www.readbyqxmd.com/read/28325005/dynamic-modeling-of-apnea-induced-concurrent-variations-in-arterial-blood-pressure-and-cerebral-blood-flow-velocity
#1
Raichel Alex, Rong Zhang, Donald E Watenpaugh, Khosrow Behbehani
Obstructive Sleep Apnea (OSA) is characterized by partial (hypopnea) or complete cessation (apnea) of airflow to the lungs during sleep. It has been previously reported that apnea episodes lead to significant rise in instantaneous blood pressure concomitant with a rise in cerebral blood flow velocity, indicating loss of cerebral autoregulation during the episodes. In this study, we have used Auto Regressive Moving Average model (ARMA (na, nb, nk)) to quantify OSA induced dynamic changes in cerebral blood flow velocity (CBFV) with beat to beat blood pressure (BP) as an input...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28325004/study-of-phase-estimation-methods-to-analyse-cardiorespiratory-synchronization-in-osa-patients
#2
Jordi Sola-Soler, Beatriz F Giraldo, Jose A Fiz, Raimon Jane
Obstructive Sleep Apnea (OSA) is a sleep disorder highly prevalent in the general population. Cardiorespiratory Phase Synchronization (CRPS) is a form of non-linear interaction between respiratory and cardiovascular systems that was found to be reduced in severe OSA patients. The Hilbert Transform (HT) method was the recommended choice for estimating the respiratory phase in CRPS studies. But we have noticed that HT provides a phase that is aligned to the transition between the exhalation and the inhalation parts of different breathing cycles, instead of being aligned to the breathing onsets...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324596/blood-pressure-and-metabolic-changes-after-3-month-cpap-therapy-in-a-very-elderly-obese-with-severe-obstructive-sleep-apnea-a-case-report-and-review-of-the-literature
#3
Francesco Spannella, Federico Giulietti, Chiara Di Pentima, Francesca Elena Lombardi, Elisabetta Borioni, Riccardo Sarzani
Age is one of the main risk factor for the presence of obstructive sleep apnea (OSA). This syndrome is associated with hypertension, cardiovascular disease, cognitive impairment and metabolic abnormalities, such as type 2 diabetes. Continuous positive airway pressure (CPAP) represents the gold standard therapy, but its benefit is still to be determined in very elderly. We report the blood pressure and metabolic changes in a very elderly obese with severe OSA after 3-month CPAP therapy. We have evaluated a very elderly obese male affected by severe symptomatic OSA, poor controlled nocturnal hypertension and insulin resistance...
March 21, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/28319673/the-effect-of-montelukast-on-mild-persistent-osa-after-adenotonsillectomy-in-children-a-preliminary-study
#4
Bing Wang, Jia Liang
This study sought to evaluate the treatment effect of montelukast in children with obstructive sleep apnea (OSA) after tonsillectomy and/or adenoidectomy (T&A). Fifty-eight children with persistent OSA after T&A were included and randomly divided into 2 groups: one group was administered montelukast for 12 weeks, and the other received no treatment. Clinical information, such as the apnea-hypopnea index (AHI) and nadir oxyhemoglobin saturation (nadir SpO2), was recorded. Symptoms of OSA were evaluated using the validated Pediatric Sleep Questionnaire (PSQ)...
March 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28319258/ct-derived-indices-of-canine-osteosarcoma-affected-antebrachial-strength
#5
Tanya C Garcia, Michele A Steffey, Allison L Zwingenberger, Leticia Daniel, Susan M Stover
OBJECTIVE: To improve the prediction of fractures in dogs with bone tumors of the distal radius by identifying computed tomography (CT) indices that correlate with antebrachial bone strength and fracture location. STUDY DESIGN: Prospective experimental study. ANIMALS: Dogs with antebrachial osteosarcoma (n = 10), and normal cadaver bones (n=9). METHODS: Antebrachia were imaged with quantitative CT prior to biomechanical testing to failure...
March 20, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28318060/integrating-postural-and-vestibular-dimensions-to-depict-impairment-in-moderate-to-severe-obstructive-sleep-apnea-syndrome-patients
#6
Alessandro Micarelli, Claudio Liguori, Andrea Viziano, Francesca Izzi, Fabio Placidi, Marco Alessandrini
Vestibular dysfunction was linked to moderate-to-severe obstructive sleep apnea syndrome (OSAS) patients in literature. However, due to a lack of knowledge among valid and recent implementations conceived to study postural control on static posturography (SP) and vestibulo-ocular reflex (VOR) gain under physiological conditions (video Head Impulse Test; vHIT), the aim of this work was to integrate (i) VOR changes via vHIT implementation, (ii) postural arrangement by studying both classical parameters and frequency spectra (PS) and (iii) correlation between these findings, polygraphic (PG) and subjective scores along Dizziness Handicap Inventory (DHI) and Epworth Sleepiness Scale (ESS)...
March 20, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28316162/-observation-on-the-clinical-application-effects-of-skin-distractor-on-the-treatment-of-scars
#7
W L Gui, E Yang, H S Zhang
Objective: To explore clinical application effects of skin distractor on the treatment of scars and to observe effects of skin distractor with different pull speeds on different parts scars of human body. Methods: One hundred and four patients with scars, conforming to the study criteria, were hospitalized in our unit from January 2014 to June 2015. Patients were divided into 2 mm/d group and 4 mm/d group according to the random number table, with 52 patients in each group. After admission, skin distractors were pasted on scars in face and neck, trunk, and extremities of patients in 2 groups, with inner edges of pasteboards close to outside edges of longer sides of scars...
March 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28315149/can-myofunctional-therapy-increase-tongue-tone-and-reduce-symptoms-in-children-with-sleep-disordered-breathing
#8
Maria Pia Villa, Melania Evangelisti, Susy Martella, Mario Barreto, Marco Del Pozzo
PURPOSE: Data in the literature suggest that myofunctional therapy (MT) may be able to play a role in the treatment of children with sleep-disordered breathing (SDB). Our study investigated the effectiveness of MT in reducing respiratory symptoms in children with SDB by modifying tongue tone. METHODS: Polysomnographic recordings were performed at baseline to assess obstructive sleep apnea (OSA) severity in 54 children (mean age 7.1 ± 2.5 years, 29 male) with SDB...
March 18, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28314054/a-cross-sectional-survey-of-the-nature-and-correlates-of-sleep-disturbance-in-people-with-psoriasis
#9
A L Henry, S D Kyle, A Chisholm, C E M Griffiths, C Bundy
BACKGROUND: Research suggests that sleep disturbance is common in psoriasis. Despite 32 studies conducted in sleep, many demonstrate methodological flaws, often using unvalidated measurement, with no study examining multiple dimensions of sleep-wake functioning. Moreover, research has yet to comprehensively examine the range of physical and psychological factors that may affect sleep in people with psoriasis. OBJECTIVE: To characterise sleep disturbance using validated measures and identify physical and psychological predictors of sleep quality in people with psoriasis...
March 17, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28303917/reduced-regional-grey-matter-volumes-in-pediatric-obstructive-sleep-apnea
#10
Mona F Philby, Paul M Macey, Richard A Ma, Rajesh Kumar, David Gozal, Leila Kheirandish-Gozal
Pediatric OSA is associated with cognitive risk. Since adult OSA manifests MRI evidence of brain injury, and animal models lead to regional neuronal losses, pediatric OSA patients may also be affected. We assessed the presence of neuronal injury, measured as regional grey matter volume, in 16 OSA children (8 male, 8.1 ± 2.2 years, AHI:11.1 ± 5.9 events/hr), and 200 control subjects (84 male, 8.2 ± 2.0 years), 191 of whom were from the NIH-Pediatric MRI database. High resolution T1-weighted whole-brain images were assessed between groups with voxel-based morphometry, using ANCOVA (covariates, age and gender; family-wise error correction, P < 0...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28303676/differences-in-respiratory-arousal-threshold-in-caucasian-and-chinese-patients-with-obstructive-sleep-apnoea
#11
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/28301801/attention-to-emotion-through-a-go-no-go-task-in-children-with-oppositionality-and-callous-unemotional-traits
#12
Lourdes Ezpeleta, J Blas Navarro, Núria de la Osa, Eva Penelo, Esther Trepat, Virginia Martin, Josep M Domènech
BACKGROUND: There is debate about whether the difficulties that children with different degrees of oppositionality (ODD) and callous-unemotional traits (CU) have in processing emotions are global or specific. The aim of this study is to identify difficulties in recognizing emotion (happiness, anger, sadness and fear) through a go/no-go task in children with different levels of ODD and CU traits. METHOD: A total of 320 8-year-old children were assessed through questionnaires filled out by teachers about oppositional defiant symptoms and CU traits and were then distributed into four groups: LowCU-HighODD, HighCU-LowODD, HighCU-HighODD and a comparison group (LowCU-LowODD)...
March 2, 2017: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/28300571/sleep-apnea-and-hypertension-are-there-gender-differences-the-vitoria-sleep-cohort
#13
Irene Cano-Pumarega, Ferrán Barbé, Andrés Esteban, Montserrat Martínez-Alonso, Carlos Egea, Joaquín Durán-Cantolla
BACKGROUND: Evidence from longitudinal studies has reported contradictory results regarding the association between obstructive sleep apnea (OSA) and hypertension. In a previous analysis of the Vitoria Sleep Cohort, we evaluated the relationship between OSA and the risk of developing hypertension and we did not find an independent association after adjustment for confounding factors. In the present study, we perform a post hoc analysis to assess the association between OSA and incident stage 2 hypertension (systolic blood pressure ≥ 160 mmHg and/or diastolic blood pressure ≥ 100 mmHg) based on gender differences...
March 11, 2017: Chest
https://www.readbyqxmd.com/read/28300223/role-of-cyclooxygenase-2-on-intermittent-hypoxia-induced-lung-tumor-malignancy-in-a-mouse-model-of-sleep-apnea
#14
Noelia Campillo, Marta Torres, Antoni Vilaseca, Paula Naomi Nonaka, David Gozal, Jordi Roca-Ferrer, César Picado, Josep Maria Montserrat, Ramon Farré, Daniel Navajas, Isaac Almendros
An adverse role for obstructive sleep apnea (OSA) in cancer epidemiology and outcomes has recently emerged from clinical and animal studies. In animals, intermittent hypoxia (IH) mimicking OSA promotes tumor malignancy both directly and via host immune alterations. We hypothesized that IH could potentiate cancer aggressiveness through activation of the cyclooxygenase-2 (COX-2) pathway and the concomitant increases in prostaglandin E2 (PGE2). The contribution of the COX-2 in IH-induced enhanced tumor malignancy was assessed using celecoxib as a COX-2 specific inhibitor in a murine model of OSA bearing Lewis lung carcinoma (LLC1) tumors...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28299260/controlling-the-vector-of-distraction-osteogenesis-in-the-management-of-obstructive-sleep-apnea
#15
Dekel Shilo, Omri Emodi, Dror Aizenbud, Adi Rachmiel
BACKGROUND: Obstructive sleep apnea (OSA) in individuals with craniofacial anomalies can compromise airway and is a serious life-threatening condition. In many cases, tracheostomy is carried out as the treatment of choice. Distraction osteogenesis of the mandible as a treatment modality for OSA is very useful and may spare the need for tracheostomy or allow decannulation, yet controlling the vector of distraction is still a major challenge. We present a method for controlling the vector of distraction...
July 2016: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28298671/optimization-of-additive-content-and-their-combination-to-improve-the-quality-of-pure-barley-bread
#16
Milica Pojić, Tamara Dapčević Hadnađev, Miroslav Hadnađev, Slađana Rakita, Aleksandra Torbica
The objective of this study was to model the influence of pregelatinized OSA starch (OSA), wheat gluten (Gl) and xylanase (Xyl) on breadmaking potential of barley flour by using response surface methodology. Addition of these ingredients had significant effect on specific bread volume, crust and crumb lightness, crumb texture, average cell size and crumb density. OSA showed the most pronounced effect on specific bread volume, average cell size, crumb density and hardness. Interaction between OSA and Gl, as well as Gl and Xyl, respectively, increased and decreased the specific bread volume and crumb chewiness, while the interaction between OSA and Xyl decreased the specific volume decrease and increased crumb chewiness...
March 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28298397/predictors-of-obstructive-sleep-apnoea-in-patients-admitted-for-acute-coronary-syndrome
#17
Jordi de Batlle, Cecilia Turino, Alicia Sánchez-de-la-Torre, Jorge Abad, Joaquín Duran-Cantolla, R Douglas McEvoy, Nick A Antic, Olga Mediano, Valentín Cabriada, Maria José Masdeu, Joaquín Teran, Joan Valls, Ferran Barbé, Manuel Sánchez-de-la-Torre
Identifying undiagnosed obstructive sleep apnoea (OSA) patients in cardiovascular clinics could improve their management. Aiming to build an OSA predictive model, a broad analysis of clinical variables was performed in a cohort of acute coronary syndrome (ACS) patients.Sociodemographic, anthropometric, life-style and pharmacological variables were recorded. Clinical measures included blood pressure, electrocardiography, echocardiography, blood count, troponin levels and a metabolic panel. OSA was diagnosed using respiratory polygraphy...
March 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28296212/red-cell-distribution-width-and-uric-acid-in-patients-with-obstructive-sleep-apnea
#18
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
#19
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/28294380/oral-appliance-therapy-versus-nasal-continuous-positive-airway-pressure-in-obstructive-sleep-apnea-syndrome-a-randomized-placebo-controlled-trial-on-self-reported-symptoms-of-common-sleep-disorders-and-sleep-related-problems
#20
Maria Nikolopoulou, Anna Byraki, Jari Ahlberg, Martijn W Heymans, H L Hamburger, Jan De Lange, Frank Lobbezoo, Ghizlane Aarab
Obstructive sleep apnea syndrome (OSAS) is associated with several sleep disorders and sleep-related problems. Therefore, the aim of this study was to compare the effects of a mandibular advancement device (MAD) with those of nasal continuous positive airway pressure (nCPAP) on self-reported symptoms of common sleep disorders and sleep-related problems in mild and moderate OSAS patients. In this randomized placebo-controlled trial sixty-four OSAS patients (52.0± 9.6 years) were randomly assigned to an MAD, nCPAP or an intra-oral placebo appliance in a parallel design...
March 10, 2017: Journal of Oral Rehabilitation
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