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https://www.readbyqxmd.com/read/29667182/breathing-regulation-and-blood-gas-homeostasis-after-near-complete-lesions-of-the-retrotrapezoid-nucleus-in-adult-rats
#1
George M P R Souza, Roy Kanbar, Daniel S Stornetta, Stephen B G Abbott, Ruth L Stornetta, Patrice G Guyenet
The retrotrapezoid nucleus (RTN) is one of several CNS nuclei that contribute, in various capacities (e.g. CO2 detection, neuronal modulation) to the central respiratory chemoreflex (CRC). Here we test how important the RTN is to PCO2 homeostasis and breathing during sleep or wake. RTN Nmb positive neurons were killed with targeted microinjections of substance-P-saporin conjugate in adult rats. Under normoxia, rats with large RTN lesions (92 ± 4 % cell loss) had normal blood pressure (BP) and arterial pH but were hypoxic (-8 mmHg PaO2 ) and hypercapnic (+10 mmHg PaCO2 )...
April 18, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29667019/what-is-new-in-heart-failure-management-in-2017-update-on-acc-aha-heart-failure-guidelines
#2
REVIEW
Biykem Bozkurt
PURPOSE OF REVIEW: The goal of this paper is to provide a summary of the new recommendations in the most recent 2017 ACC/AHA/HFSA Focused Update of the 2013 ACCF/AHA Guideline for the Management of Heart Failure: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Failure Society of America. The intent is to provide the background and the supporting evidence for the recommendations and to provide practical guidance for management strategies in treatment of heart failure patients...
April 17, 2018: Current Cardiology Reports
https://www.readbyqxmd.com/read/29664672/primary-care-physicians-can-comprehensively-manage-sleep-apnea-patients-a-non-inferiority-randomized-controlled-trial
#3
M Ángeles Sánchez-Quiroga, Jaime Corral, Francisco J Gómez-de-Terreros, Carmen Carmona-Bernal, M Isabel Asensio-Cruz, Marta Cabello, M Ángeles Martínez-Martínez, Carlos J Egea, Estrella Ordax, Ferran Barbe, Javier Barca, Juan F Masa
RATIONALE: General practitioners play a passive role in obstructive sleep apnea (OSA) management. Simplification of the diagnosis and use of a semi-automatic algorithm for treatment can facilitate the integration of general practitioners, which has cost advantages. OBJECTIVE: To determine differences in effectiveness between primary healthcare area (PHA) and in-hospital specialized management protocols during six months of follow-up. METHOD: A multicenter, non-inferiority, randomized, controlled trial with two open parallel arms and a cost-effectiveness analysis was performed in six tertiary hospitals in Spain...
April 17, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29659956/polyphenols-have-no-impact-on-endothelial-function-in-patients-with-obstructive-sleep-apnea-a-randomized-controlled-trial
#4
Wojciech Trzepizur, Vanessa Bironneau, Sylvain Recoquillon, Pascaline Priou, Nicole Meslier, Jean-François Hamel, Samir Henni, Astrid Darsonval, Khaled Messaoudi, Maria Carmen Martínez, Ramaroson Andriantsitohaina, Frédéric Gagnadoux
Background: Endothelial dysfunction, a pathophysiologic determinant of atherogenesis, has been found to occur in obstructive sleep apnea syndrome (OSA) and is improved by continuous positive airway pressure (CPAP). However, the efficacy of CPAP therapy is limited by variable adherence. Alternative treatment strategies are needed. The impact of polyphenols on endothelial function has never been evaluated in OSA. Objective: We evaluated the impact of 1-mo supplementation with grape juice polyphenols (GJPs) on the reactive hyperemia index (RHI), a validated measure of endothelial function in patients with severe OSA...
April 1, 2018: Journal of Nutrition
https://www.readbyqxmd.com/read/29628442/obstructive-sleep-apnea-and-effects-of-cpap-on-triglyceride-rich-lipoprotein-metabolism
#5
Luciano F Drager, Thauany M Tavoni, Vanessa M Silva, Raul D Santos, Rodrigo P Pedrosa, Luiz A Bortolotto, Carmen G C Vinagre, Vsevolod Y Polotsky, Geraldo Lorenzi-Filho, Raul C Maranhao
This study aimed to explore lipoprotein metabolism in Obstructive Sleep Apnea (OSA) and the effects of continuous positive airway pressure (CPAP). We studied 15 men with severe OSA (apnea-hypopnea index, AHI ≥30 events/hour) and 12 age, body mass index and waist circumference-matched volunteers without OSA (AHI <5 events/hour). Carotid intima-media thickness (CIMT) was determined by a blind examiner. After 12 hours fasting, a triglyceride-rich chylomicron-like emulsion, labeled with [14C]-cholesterol ester and [3H]-triolein was injected intravenously followed by blood samples collection at pre-established time...
April 8, 2018: Journal of Lipid Research
https://www.readbyqxmd.com/read/29623253/partial-reversal-of-color-vision-impairment-in-type-2-diabetes-associated-with-obstructive-sleep-apnea
#6
Rajiv Raman, Aditya Verma, Sangeetha Srinivasan, Deepak Bhojwani
Objective: Tritan anomaly is a known acquired color defect seen in diabetic patients, with or without the evidence of clinical signs of diabetic retinopathy (DR). We report a case of a 45-year-old diabetic patient with tritan pattern color defect associated with obstructive sleep apnea and its partial reversal with continuous positive airway pressure (CPAP) ventilation. Methods: A 45-year-old male with diabetes, wildlife photographer by profession, presented with specific complaints of seeing all objects in the surrounding with a greenish tinge in both the eyes...
2018: GMS Ophthalmology Cases
https://www.readbyqxmd.com/read/29623136/the-effects-of-continuous-positive-airway-pressure-on-premature-ventricular-contractions-and-ventricular-wall-stress-in-patients-with-heart-failure-and-sleep-apnea
#7
Sabri Seyis, Adnan Kazım Usalan, Ibrahim Rencuzogullari, Özge Kurmuş, Adil Can Gungen
Background: We aimed to investigate the effects of continuous positive airway pressure (CPAP) treatment on electrocardiography (ECG), premature ventricular contraction load on 24-hour Holter recordings, and implantable cardioverter defibrillator (ICD) shocks in patients with obstructive sleep apnea syndrome (OSAS) and heart failure. Methods: Patients with heart failure and ICD and patients with newly diagnosed OSAS were divided into two groups according to CPAP treatment...
2018: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/29617910/sleep-characteristics-and-inflammatory-biomarkers-among-midlife-women
#8
Sara Nowakowski, Karen A Matthews, Roland von Känel, Martica H Hall, Rebecca C Thurston
Study Objectives: Research suggests that sleep disturbances are associated with elevated levels of inflammation. Some evidence indicates that women may be particularly vulnerable; increased levels of inflammatory biomarkers with sleep disturbances are primarily observed among women. Midlife, which encompasses the menopause transition, is typically reported as a time of poor sleep. We tested whether poorer objectively measured sleep characteristics were related to a poorer inflammatory profile in midlife women...
March 30, 2018: Sleep
https://www.readbyqxmd.com/read/29570509/impact-of-obstructive-sleep-apnea-on-cardiac-organ-damage-in-patients-with-acute-ischemic-stroke
#9
Paola Mattaliano, Carolina Lombardi, Davide Sangalli, Andrea Faini, Barbara Corrà, Laura Adobbati, Giovanna Branzi, Davide Mariani, Vincenzo Silani, Gianfranco Parati
BACKGROUND AND PURPOSE: Both obstructive sleep apnea (OSA) and cardiac organ damage have a crucial role in acute ischemic stroke. Our aim is to explore the relationship between OSA and cardiac organ damage in acute stroke patients. METHODS: A total of 130 consecutive patients with acute ischemic stroke were enrolled. Patients underwent full multichannel 24-h polysomnography for evaluation of OSA and echocardiography to evaluate left ventricle (LV) mass index (LV mass/BSA, LV mass/height), thickness of interventricular septum (IVS) and posterior wall (LVPW), LV ejection fraction and left atrium enlargement...
March 22, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29570476/patent-foramen-ovale-and-hypoxemia
#10
Mohammad K Mojadidi, Juan C Ruiz, Jason Chertoff, Muhammad O Zaman, Islam Y Elgendy, Ahmed N Mahmoud, Mohammad Al-Ani, Akram Y Elgendy, Nimesh K Patel, Ghanshyam Shantha, Jonathan M Tobis, Bernhard Meier
Patent foramen ovale (PFO), an embryonic remnant of the fetal circulation, is present in 20-25% of adults. While recent observational studies and clinical trials have established the link between PFO-mediated right-to-left shunting with cryptogenic stroke and migraine with aura, the role of a PFO in exacerbating hypoxemic medical conditions (i.e., sleep apnea, chronic obstructive pulmonary disease, pulmonary hypertension, platypnea-orthodeoxia, pulmonary arteriovenous malformation, high altitude pulmonary edema, and exercise desaturation) remains poorly evaluated...
March 22, 2018: Cardiology in Review
https://www.readbyqxmd.com/read/29565502/correlation-between-coronary-artery-lesion-quantitative-score-and-osahs-and-relative-risk-factors
#11
T Zhang, C Zhang, R-X Chen, B Shao, G-A Liu
OBJECTIVE: The purpose of this study was to investigate the relationship of obstructive sleep apnea hypopnea syndrome (OSAHS) with coronary artery lesion quantitative score Syntax Score (SX score) and risk factors for coronary heart disease (CHD). PATIENTS AND METHODS: A total of 115 patients with OSAHS admitted to the Department of Cardiology in our hospital from January 2011 to June 2015 were selected. Philips Respironics Alice 5 Polysomnography was used for sleep monitoring...
March 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29538409/cerebral-vasoreactivity-in-response-to-a-head-of-bed-position-change-is-altered-in-patients-with-moderate-and-severe-obstructive-sleep-apnea
#12
Clara Gregori-Pla, Gianluca Cotta, Igor Blanco, Peyman Zirak, Martina Giovannella, Anna Mola, Ana Fortuna, Turgut Durduran, Mercedes Mayos
MOTIVATION: Obstructive sleep apnea (OSA) can impair cerebral vasoreactivity and is associated with an increased risk of cerebrovascular disease. Unfortunately, an easy-to-use, non-invasive, portable monitor of cerebral vasoreactivity does not exist. Therefore, we have evaluated the use of near-infrared diffuse correlation spectroscopy to measure the microvascular cerebral blood flow (CBF) response to a mild head-of-bed position change as a biomarker for the evaluation of cerebral vasoreactivity alteration due to chronic OSA...
2018: PloS One
https://www.readbyqxmd.com/read/29533258/patients-at-high-risk-for-obstructive-sleep-apnea-are-at-increased-risk-for-atrial-fibrillation-after-cardiac-surgery-a-cohort-analysis
#13
Nika Karimi, Marta Kelava, Perin Kothari, Nicole M Zimmerman, A Marc Gillinov, Andra E Duncan
BACKGROUND: Patients with obstructive sleep apnea (OSA) experience intermittent hypoxia, hypercarbia, and sympathetic activation during sleep, which increases risk for paroxysmal atrial fibrillation and other cardiac arrhythmias. Whether patients with OSA experience increased episodes of atrial fibrillation after cardiac surgery is unclear. We examined whether patients at increased risk for OSA, assessed by the STOP-BANG (snoring, tired during the day, observed stop breathing during sleep, high blood pressure, body mass index more than 35 kg/m, age more than 50 years, neck circumference more than 40 cm, and male gender) questionnaire, had a higher incidence of new-onset postoperative atrial fibrillation after cardiac surgery...
March 12, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29527742/use-of-autobilevel-ventilation-in-patients-with-obstructive-sleep-apnea-an-observational-study
#14
Pierpaolo Baiamonte, Emilia Mazzuca, Claudia I Gruttad'Auria, Alessandra Castrogiovanni, Claudia Marino, Davide Lo Nardo, Marco Basile, Margherita Algeri, Salvatore Battaglia, Oreste Marrone, Andrea Gagliardo, Maria R Bonsignore
Continuous positive airway pressure (CPAP) is the first-choice treatment for obstructive sleep-disordered breathing. Automatic bilevel ventilation can be used to treat obstructive sleep-disordered breathing when CPAP is ineffective, but clinical experience is still limited. To assess the outcome of titration with CPAP and automatic bilevel ventilation, the charts of 356 outpatients (obstructive sleep apnea, n = 242; chronic obstructive pulmonary disease + obstructive sleep apnea overlap, n = 80; obesity hypoventilation syndrome [OHS], n = 34; 103 females) treated for obstructive sleep-disordered breathing from January 2014 to April 2017 were reviewed...
March 12, 2018: Journal of Sleep Research
https://www.readbyqxmd.com/read/29524090/nocturnal-blood-pressure-fluctuation-and-associated-influential-factors-in-severe-obstructive-sleep-apnea-patients-with-hypertension
#15
Jing Xu, Ning Ding, Xilong Zhang, Nana Wang, Bing Sun, Rong Zhang, Xiaochen Xie, Zongren Wan, Yanli Gu, Shan Zhang, Yongqing Hong, Mao Huang, Zili Meng
PURPOSE: Obstructive sleep apnea syndrome (OSAS) can induce dramatic blood pressure (BP) fluctuations during sleep and it can be associated with hypertension. We investigated the properties and associated influential factors of BP fluctuation in severe OSAS with and without hypertension. METHODS: Two hundred one severe OSAS subjects were divided into hypertensive and normotensive groups. BP was continuously monitored via measurement of pulse transmit time (PTT)...
March 9, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29523262/predictors-of-sleep-disordered-breathing-in-pregnancy
#16
Judette M Louis, Matthew A Koch, Uma M Reddy, Robert M Silver, Corette B Parker, Francesca L Facco, Susan Redline, Chia-Ling Nhan-Chang, Judith H Chung, Grace W Pien, Robert C Basner, William A Grobman, Deborah A Wing, Hyagriv N Simhan, David M Haas, Brian M Mercer, Samuel Parry, Daniel Mobley, Benjamin Carper, George R Saade, Frank P Schubert, Phyllis C Zee
BACKGROUND: Sleep-disordered breathing (SDB) is common in pregnancy, but there are limited data on predictors. OBJECTIVES: The objective of this study was to develop predictive models of sleep-disordered breathing during pregnancy. STUDY DESIGN: Nulliparous women completed validated questionnaires to assess for symptoms related to snoring, fatigue, excessive daytime sleepiness, insomnia, and restless leg syndrome. The questionnaires included questions regarding the timing of sleep and sleep duration, work schedules (eg, shift work, night work), sleep positions, and previously diagnosed sleep disorders...
February 2, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29510792/acetazolamide-reduces-blood-pressure-and-sleep-disordered-breathing-in-patients-with-hypertension-and-obstructive-sleep-apnea-a-randomized-controlled-trial
#17
Davoud Eskandari, Ding Zou, Ludger Grote, Erik Hoff, Jan Hedner
STUDY OBJECTIVES: The carbonic anhydrase inhibitor acetazolamide (AZT) modulates blood pressure at high altitude and reduces sleep-disordered breathing in patients with obstructive sleep apnea (OSA). We aimed to investigate the treatment effect of AZT and in combination with continuous positive airway pressure (CPAP) on blood pressure in patients with hypertension and OSA. METHODS: In a prospective, randomized, three-way crossover study, 13 male patients with hypertension and moderate to severe OSA (age 64 ± 7 years, body mass index 29 ± 4 kg/m2 , and mean apnea-hypopnea index 37 ± 23 events/h) received AZT, CPAP, or AZT plus CPAP for 2-week periods...
March 15, 2018: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29503410/investigation-of-obstructive-sleep-apnea-using-portable-monitors-and-health-check-data-in-japanese-drivers
#18
Masako Ueyama, Hiroyuki Kokuto, Hitoshi Sugihara, Shinichi Oikawa, Fumio Suzuki, Hajime Goto, Shoji Kudoh
AIMS: The identification and appropriate management of commercial motor vehicle (CMV) drivers with unrecognized obstructive sleep apnea (OSA) is a major public health concern and priority; OSA among drivers has not been fully investigated in Japan, and a better understanding of this undiagnosed disease is warranted. Therefore, we evaluated the prevalence of OSA and the factors related to apnea-hypopnea index (AHI) in Japanese CMV drivers. METHODS: This retrospective study included 1309 Japanese CMV drivers aged 40-69 years...
March 5, 2018: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/29497949/pulmonary-functions-and-sleep-related-breathing-disorders-in-lipid-storage-disease
#19
Züleyha Bingöl, Hacer Durmuş Tekce, Gülseren Sağcan, Piraye Serdaroğlu, Esen Kıyan
PURPOSE: Pulmonary function abnormalities and sleep-related breathing disorders (SRBD) are frequent in subjects with several neuromuscular diseases but there is no data about lipid storage diseases (LSD). Therefore, we aimed to evaluate pulmonary functions and SRBD in adults with LSD. METHODS: Pulmonary functions (forced expiratory volume (FEV1 ), forced vital capacity (FVC), supine FVC, upright-supine FVC% change, maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), peak cough flow (PCF)), arterial blood gases, and polysomnographic data of all subjects were evaluated...
March 1, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29489985/obstructive-sleep-apnea-syndrome-and-sleep-quality-in-hypertensive-patients
#20
Marcelo Rodrigues Bacci, Jonathan Naim Mora Emboz, Beatriz da Costa Aguiar Alves, Glaucia Luciano da Veiga, Neif Murad, Adriano Meneghini, Antonio Carlos P Chagas, Fernando Luiz Affonso Fonseca
INTRODUCTION: Obstructive sleep apnea and hypopnea syndrome (OSAHS) is one of the developmental factors of high blood pressure (HBP), a relevant global public health problem. OSAHS is characterized by the reduction or complete cessation of respiratory airflow due to intermittent airway collapse. Additionally, significant changes in sleep rhythm and pattern are observed in these patients. OBJECTIVE: To evaluate the association between OSAHS and sleep quality in essential and resistant hypertensives...
December 2017: Revista da Associação Médica Brasileira
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