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https://www.readbyqxmd.com/read/28087818/three-hours-of-intermittent-hypoxia-increases-circulating-glucose-levels-in-healthy-adults
#1
Lauren P Newhouse, Michael J Joyner, Timothy B Curry, Marcello C Laurenti, Chiara Dalla Man, Claudio Cobelli, Adrian Vella, Jacqueline K Limberg
An independent association exists between sleep apnea and diabetes. Animal models suggest exposure to intermittent hypoxia, a consequence of sleep apnea, results in altered glucose metabolism and fasting hyperglycemia. However, it is unknown if acute exposure to intermittent hypoxia increases glucose concentrations in nondiabetic humans. We hypothesized plasma glucose would be increased from baseline following 3 h of intermittent hypoxia in healthy humans independent of any effect on insulin sensitivity. Eight (7M/1F, 21-34 years) healthy subjects completed two study visits randomized to 3 h of intermittent hypoxia or continuous normoxia, followed by an oral glucose tolerance test...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/28086902/exploiting-temporal-and-nonstationary-features-in-breathing-sound-analysis-for-multiple-obstructive-sleep-apnea-severity-classification
#2
Jaepil Kim, Taehoon Kim, Donmoon Lee, Jeong-Whun Kim, Kyogu Lee
BACKGROUND: Polysomnography (PSG) is the gold standard test for obstructive sleep apnea (OSA), but it incurs high costs, requires inconvenient measurements, and is limited by a one-night test. Thus, a repetitive OSA screening test using affordable data would be effective both for patients interested in their own OSA risk and in-hospital PSG. The purpose of this research was to develop a four-OSA severity classification model using a patient's breathing sounds. METHODS: Breathing sounds were recorded from 83 subjects during a PSG test...
January 7, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28081532/cardiovascular-events-in-moderately-to-severely-obese-obstructive-sleep-apnea-patients-on-positive-airway-pressure-therapy
#3
Anna Maria Marotta, Jean-Christian Borel, Louis M Galerneau, Renaud Tamisier, Maria R Bonsignore, Jean Louis Pépin
BACKGROUND: In moderately to severely obese patients with obstructive sleep apnea (OSA), the effects of long-term positive airway pressure (PAP) treatment on cardiovascular risk are poorly defined. PURPOSE: To assess the effect of continuous positive airway pressure (CPAP) or noninvasive ventilation (NIV) on the occurrence of cardiovascular events in obese OSA patients. METHODS: We performed a noninterventional observational study in obese OSA patients recruited between 2007 and 2010 at the Sleep Center, University of Grenoble, treated with CPAP or NIV, and followed for 5...
January 13, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28081322/does-cpap-treatment-affect-the-voice
#4
Güleser Saylam, Mustafa Şahin, Dilek Demiral, Ömer Bayır, Melike Bağnu Yüceege, Emel Çadallı Tatar, Mehmet Hakan Korkmaz
BACKGROUND/AIM: The aim of this study was to investigate alterations in voice parameters among patients using continuous positive airway pressure (CPAP) for the treatment of obstructive sleep apnea syndrome. MATERIALS AND METHODS: Patients with an indication for CPAP treatment without any voice problems and with normal laryngeal findings were included and voice parameters were evaluated before and 1 and 6 months after CPAP. Videolaryngostroboscopic findings, a self-rated scale (Voice Handicap Index-10, VHI-10), perceptual voice quality assessment (GRBAS: grade, roughness, breathiness, asthenia, strain), and acoustic parameters were compared...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28081171/a-higher-proportion-of-metabolic-syndrome-in-chinese-subjects-with-sleep-disordered-breathing-a-case-control-study-based-on-electrocardiogram-derived-sleep-analysis
#5
Ping-Huei Tseng, Pei-Lin Lee, Wei-Chung Hsu, Yan Ma, Yi-Chia Lee, Han-Mo Chiu, Yi-Lwun Ho, Ming-Fong Chen, Ming-Shiang Wu, Chung-Kang Peng
OBJECTIVE: The prevalence of metabolic syndrome (MS) has increased rapidly in Taiwan and worldwide. We aim to determine the association between sleep-disordered breathing (SDB) and MS in a Chinese general population. METHODS: This case-control study recruited subjects who have undergone a prospective electrocardiogram-based cardiopulmonary coupling (CPC) sleep spectrogram as part of the periodic health check-ups at the National Taiwan University Hospital. Comprehensive anthropometrics, blood biochemistry, prevalence of MS and its individual components were compared with Bonferroni correction between 40 subjects with SDB, defined as the CPC-derived apnea-hypopnea index (CPC-AHI) >5 event/hour and 80 age- and sex-matched controls, defined as CPC-AHI <1 event/hour...
2017: PloS One
https://www.readbyqxmd.com/read/28079611/it-is-just-attention-deficit-hyperactivity-disorder%C3%A2-or-is-it
#6
Dana C Won, Christian Guilleminault, Peter J Koltai, Stacey D Quo, Martin T Stein, Irene M Loe
Carly is a 5-year-old girl who presents for an interdisciplinary evaluation due to behaviors at school and home suggestive of attention-deficit hyperactivity disorder (ADHD). Parent report of preschool teacher concerns was consistent with ADHD. Psychological testing showed verbal, visual-spatial, and fluid reasoning IQ scores in the average range; processing speed and working memory were below average. Carly's behavior improved when her mother left the room, and she was attentive during testing with a psychologist...
January 10, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28078997/lipoprotein-a-and-cardiovascular-risk-the-show-must-go-on
#7
Niki Katsiki, Khalid Al-Rasadi, Dimitri P Mikhailidis
Lipoprotein (a) [Lp(a)] is an independent but moderate, predictor for coronary heart disease (CHD) prevalence and severity. Several established and emerging cardiovascular (CV) risk factors including age, gender, ethnicity, smoking, dyslipidemia, hypertension, obesity, type 2 diabetes mellitus, alcohol consumption, arterial stiffness and hyperuricemia have been linked to Lp(a) metabolism. Apart from CHD, Lp(a) has been also associated with non-cardiac vascular diseases and diseases associated with increased CV risk such as chronic kidney disease, metabolic syndrome, non-alcoholic fatty liver disease, erectile dysfunction, obstructive sleep apnea syndrome, inflammatory bowel diseases and human immunodeficiency virus infection...
January 12, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28078488/hydroxyurea-treatment-effect-on-children-with-sickle-cell-disease-and-obstructive-sleep-apnea
#8
Anthony J Grady, Jane S Hankins, Brent Haberman, Robert Schoumacher, Rose Mary Stocks
BACKGROUND: While hydroxyurea is the mainstay of treatment for many of the comorbidities associated with sickle cell disease, its effect on obstructive sleep apnea has not been fully investigated. The purpose of this project is to help characterize the effects of hydroxyurea on obstructive sleep apnea in children with sickle cell disease and determine its therapeutic role in the condition. METHODS: Chart review was conducted on two pediatric patients with sickle cell disease who experienced resolution of obstructive sleep apnea following hydroxyurea administration...
January 11, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28078487/the-role-of-the-nox4-derived-ros-mediated-rhoa-rho-kinase-pathway-in-rat-hypertension-induced-by-chronic-intermittent-hypoxia
#9
Wen Lu, Jing Kang, Ke Hu, Si Tang, Xiufang Zhou, Lifang Xu, Yuanyuan Li, Shuhui Yu
BACKGROUND: Obstructive sleep apnea syndrome, which is a risk factor for resistant hypertension, is characterized by chronic intermittent hypoxia (CIH) and is associated with many cardiovascular diseases. CIH elicits systemic oxidative stress and sympathetic hyperactivity, which lead to hypertension. Rho kinases (ROCKs) are considered to be major effectors of the small GTPase RhoA and have been extensively studied in the cardiovascular field. Upregulation of the RhoA/ROCK signaling cascade is observed in various cardiovascular disorders, such as atherosclerosis, pulmonary hypertension, and stroke...
January 11, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28078407/-diagnostic-accuracy-of-outpatient-polygraphy-devices-a%C3%A2-comparison-with-inpatient-polysomnography-in-clinical-routine
#10
J Lindemann, B Augenstein, F Stupp, B Saul, M Reichert, R Riepl, F Sommer, A-S Grossi
BACKGROUND: Cardiorespiratory polysomnography (PSG) is considered the reference method for diagnosis of obstructive sleep apnea (OSA). Due to waiting times and high costs, payers increasingly request outpatient polygraphy (PG) as an alternative to inpatient PSG. The aim of the present study was to evaluate the diagnostic accuracy of different outpatient PG devices compared to stationary PSG in clinical practice. MATERIALS AND METHODS: Externally collected outpatient PG findings of 406 patients were retrospectively compared with the corresponding PSG findings...
January 11, 2017: HNO
https://www.readbyqxmd.com/read/28077252/incorporating-body-type-apple-vs-pear-in-stop-bang-questionnaire-improves-its-validity-to-detect-osa
#11
Lisa Sangkum, Ikrita Klair, Chok Limsuwat, Sabrina Bent, Leann Myers, Supat Thammasitboon
STUDY OBJECTIVE: The aim of this study is to evaluate whether adding the item of "apple body type" to the STOP-BANG questionnaire enhances diagnostic performance of the questionnaire for detecting obstructive sleep apnea (OSA). DESIGN: Cross-sectional study. SETTING: Sleep center setting. PATIENTS: Two hundred and eight subjects who were referred for an evaluation of possible OSA at Tulane Comprehensive Sleep Center...
January 8, 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28076452/angiotensin-1-7-relieved-renal-injury-induced-by-chronic-intermittent-hypoxia-in-rats-by-reducing-inflammation-oxidative-stress-and-fibrosis
#12
W Lu, J Kang, K Hu, S Tang, X Zhou, S Yu, L Xu
We aimed to study the renal injury and hypertension induced by chronic intermittent hypoxia (CIH) and the protective effects mediated by angiotensin 1-7 [Ang(1-7)]. We randomly assigned 32 male Sprague-Dawley rats (body weight 180-200 g) to normoxia control, CIH, Ang(1-7)-treated normoxia, and Ang(1-7)-treated CIH groups. Systolic blood pressure (SBP) was monitored at the start and end of each week. Renal sympathetic nerve activity (RSNA) was recorded. CTGF and TGF-β were detected by immunohistochemistry and western blotting...
January 9, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28076341/risk-factors-for-post-coronary-artery-bypass-graft-atrial-fibrillation-role-of-obstructive-sleep-apnea
#13
Amro Qaddoura, Adrian Baranchuk
In this chapter, we start by discussing coronary artery bypass grafting and the most common complication after surgery – post coronary artery bypass grafting atrial fibrillation (PCAF). We then discuss the major risk factors for PCAF, and subsequently conduct an in-depth discussion of obstructive sleep apnea as a risk factor. In this endeavor, we outline how obstructive sleep apnea is diagnosed, its pathophysiological relationship to PCAF, and recent clinical studies investigating the association between obstructive sleep apnea and PCAF...
December 21, 2016: Medwave
https://www.readbyqxmd.com/read/28075423/effects-of-device-guided-slow-breathing-training-on-exercise-capacity-cardiac-function-and-respiratory-patterns-during-sleep-in-male-and-female-patients-with-chronic-heart-failure
#14
Kalina Kawecka-Jaszcz, Grzegorz Bilo, Tomasz Drożdż, Dorota Dębicka-Dąbrowska, Grzegorz Kiełbasa, Gabriella Malfatto, Katarzyna Styczkiewicz, Carolina Lombardi, Agnieszka Bednarek, Sabrina Salerno, Danuta Czarnecka, Gianfranco Parati
INTRODUCTION    Slow breathing training (SBT) has been proposed as new non-pharmacological treatment in chronic heart failure (CHF) patients.  OBJECTIVES    The aim of this study was to assess the effects of SBT on exercise capacity, haemodynamic parameters and sleep respiratory patterns in a relatively large sample of CHF patients. PATIENTS ABD METHODS    A cross-over open study was conducted. The patients completed, in random order, 10-12 week periods of SBT with the RESPeRATE device (InterCure Ltd...
January 10, 2017: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/28073884/pacemaker-detected-severe-sleep-apnea-predicts-new-onset-atrial-fibrillation
#15
Andrea Mazza, Maria Grazia Bendini, Raffaele De Cristofaro, Mariolina Lovecchio, Sergio Valsecchi, Giuseppe Boriani
AIMS: Sleep apnea (SA) diagnosed on overnight polysomnography is a risk factor for atrial fibrillation (AF). Advanced pacemakers are now able to monitor intrathoracic impedance for automatic detection of SA events. METHODS AND RESULTS: We enrolled 160 consecutive recipients of a dual-chamber pacemaker endowed with the ApneaScan algorithm (Boston Scientific). If the pacemaker-measured Respiratory Disturbance Index was ≥30 episodes per hour for at least one night during the first week after implantation, SA was defined as severe...
January 10, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28070780/laparoscopic-sleeve-gastrectomy-in-adolescents-with-or-without-syndromic-obesity-two-years-follow-up
#16
Angelo Iossa, Francesco De Peppo, Romina Caccamo, Brad Michael Watkins, Francesca Abbatini, Emanuela Ceriati, Gianfranco Silecchia
INTRODUCTION: Childhood obesity is an emerging health problem. Surgical treatment of obese adolescents, particularly those affected by congenital syndrome, represents a controversial issue. The aim of this multicenter study was to retrospectively assess the results of laparoscopic sleeve gastrectomy (LSG) in a cohort of adolescents affected by morbid obesity, with or without congenital syndromes. MATERIALS AND METHODS: Forty-one obese (BMI 49 ± 6 kg/m(2)) adolescents with mean age of 16 ± 3 years (58...
January 9, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/28069061/association-between-physical-activity-and-sleep-disordered-breathing-in-male-japanese-workers-a-cross-sectional-study
#17
Hiroaki Itoh, Kazuhito Yokoyama, Takehisa Matsukawa, Fumihiko Kitamura
BACKGROUND: Whether physical activity reduces the risk of sleep-disordered breathing (SDB) for non-obese people remains unclear. The present cross-sectional study examined the association between physical activity and SDB among non-obese male Japanese workers. METHODS: All 200 workers in a company in Tokyo, Japan, who drove a motor vehicle as part of their job, were invited to be screened for SDB to prevent traffic accidents. Of these, 195 agreed to participate in this study...
January 9, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28068661/single-nucleotide-polymorphisms-in-adiponectin-gene-are-not-directly-associated-with-increased-risk-of-obstructive-sleep-apnea-syndrome-in-a-chinese-han-population
#18
Wenjuan Wu, Zhijun Li, Tingyu Tang, Liang Gu, Jianzong Du, Tian Zhao, Xiaoxi Zhou, Qingdong Huang
PURPOSE: This study aims to test the possible correlation between single nucleotide polymorphisms (SNPs) in the adiponectin gene and increased risk of obstructive sleep apnea syndrome (OSAS) in a Chinese Han population. MATERIALS AND METHODS: A total of 266 subjects were enrolled into the study to detect 9 SNPs in the adiponectin gene. Multivariate unconditional logistic regression analysis, adjusted for gender and age, was used to estimate the associations of these SNPs with OSAS risk...
January 10, 2017: ORL; Journal for Oto-rhino-laryngology and its related Specialties
https://www.readbyqxmd.com/read/28068279/identifying-predictors-of-central-sleep-apnea-cheyne-stokes-breathing-in-chronic-heart-failure-a-pathophysiological-approach
#19
Aneliya I Draganova, Kiril V Terziyski, Stefan S Kostianev
Chronic heart failure (CHF) is a major health problem associated with increased mortality, despite modern treatment options. Central sleep apnea (CSA)/Cheyne-Stokes breathing (CSB) is a common and yet largely under-diagnosed co-morbidity, adding significantly to the poor prognosis in CHF because of a number of acute and chronic effects, including intermittent hypoxia, sympathetic overactivation, disturbed sleep architecture and impaired physical tolerance. It is characterized by repetitive periods of crescendo-decrescendo ventilatory pattern, alternating with central apneas and hypopneas...
December 1, 2016: Folia Medica
https://www.readbyqxmd.com/read/28065692/respiratory-drive-in-patients-with-chronic-heart-failure-and-central-sleep-apnea-data-from-the-daunia-heart-failure-registry
#20
Michele Correale, Giovanna Elisiana Carpagnano, Natale Daniele Brunetti, Lucia Forte, Ilenia Monaco, Armando Ferraretti, Roberto Sabato, Maria Pia Foschino Barbaro, Matteo Di Biase, Donato Lacedonia
No abstract text is available yet for this article.
December 27, 2016: International Journal of Cardiology
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