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https://www.readbyqxmd.com/read/27921347/objective-snoring-time-and-carotid-intima-media-thickness-in-non-apneic-female-snorers
#1
Jinyoung Kim, Allan I Pack, Barbara J Riegel, Julio A Chirinos, Alexandra Hanlon, Seung Ku Lee, Chol Shin
Controversy persists about whether snoring can affect atherosclerotic changes in adjacent vessels, independently of obstructive sleep apnea and other cardiovascular risk factors. This study examined the independent association between snoring and carotid artery intima-media thickness (IMT) in non-apneic snorers and non-snorers. We studied 180 non-apneic snorers and non-snorers participating in a full-night home-based sleep study. Snoring sound was measured objectively by a microphone. Based on snoring time across the night, participants were classified as non-snorers (snoring time: 0%), mild snorers (1-25%) and moderate to heavy snorers (≥25%)...
December 6, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27916076/-daytime-hypercapnia-in-patients-with-obstructive-sleep-apnea-hypopnea-syndrome-in-han-and-uygur-nationality
#2
Z M He, X L Jiang, Piliqing Da, Z Ye, J P Li, Q L Zhang, Y Chen, J Shi, M Li, F Han
Objective: To evaluate the incidence and factors related to daytime hypercapnia in Han and Uygur patients with obstructive sleep apnea hypopnea syndrome (OSAHS). Methods: There were 221 patients with OSAHS (include 179 Han patients and 42 Uygur patients) in Sleep Center of Department of Respiratory and Critical Care Medicine of Karamay Central Hospital from 2015, Jan to Dec. All the patients underwent polysomnography (PSG), nocturnal oximetry, daytime blood gas analysis, pulmonary function test and Mouth occlusion pressure (P0...
November 29, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27914881/continuous-positive-airway-pressure-and-diabetes-risk-in-sleep-apnea-patients-a-systemic-review-and-meta-analysis
#3
Liang Chen, Jian Kuang, Jian-Hao Pei, Hong-Mei Chen, Zhong Chen, Zhong-Wen Li, Hua-Zhang Yang, Xiao-Ying Fu, Long Wang, Zhi-Jiang Chen, Shui-Qing Lai, Shu-Ting Zhang
BACKGROUND: The study assessed the effect of continuous positive airway pressure (CPAP) therapy on the risk of developing type 2 diabetes by evaluating change in the homeostasis model assessment of insulin resistance (HOMA-IR) fasting blood glucose (FBG) and fasting insulin following CPAP treatment in non-diabetic patients and pre-diabetic with obstructive sleep apnea (OSA). METHODS: Medline, PubMed, Cochrane, and EMBASE databases were searched until August 24, 2015...
November 30, 2016: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/27913367/a-new-method-for-self-estimation-of-the-severity-of-obstructive-sleep-apnea-using-easily-available-measurements-and-neural-fuzzy-evaluation-system
#4
Ming-Feng Wu, Wei-Chang Huang, Chia-Feng Juang, Kai-Ming Chang, Chih-Yu Wen, Yu-Hsuan Chen, Ching-Yi Lin, Yi-Chan Chen, Ching-Cheng Lin
This paper proposes a neural fuzzy evaluation system (NFES) with significant variables selected from stepwise regression to predict apnea-hypopnea index (AHI) for evaluating obstructive sleep apnea (OSA). The variables considered are the change statuses of blood pressure (BP) before going to sleep and early in the morning as well as other five easily available measurements (age, body mass index (BMI) etc.) so that users can use the system for self-evaluation of OSA. A total of 150 subjects are reviewed retrospectively and categorized as training (120 subjects) and validation (30 subjects) sets by a five-fold cross validation scheme with stratified sampling based on the OSA severity...
December 1, 2016: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/27909989/orexin-and-central-modulation-of-cardiovascular-and-respiratory-function
#5
Pascal Carrive, Tomoyuki Kuwaki
Orexin makes an important contribution to the regulation of cardiorespiratory function. When injected centrally under anesthesia, orexin increases blood pressure, heart rate, sympathetic nerve activity, and the amplitude and frequency of respiration. This is consistent with the location of orexin neurons in the hypothalamus and the distribution of orexin terminals at all levels of the central autonomic and respiratory network. These cardiorespiratory responses are components of arousal and are necessary to allow the expression of motivated behaviors...
December 2, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27906840/renal-artery-denervation-for-treatment-of-patients-with-self-reported-obstructive-sleep-apnea-and-resistant-hypertension-results-from-the-global-symplicity-registry
#6
Dominik Linz, Giuseppe Mancia, Felix Mahfoud, Krzysztof Narkiewicz, Luis Ruilope, Markus Schlaich, Ingrid Kindermann, Roland E Schmieder, Sebastian Ewen, Bryan Williams, Michael Böhm
BACKGROUND: Sleep-disordered breathing, predominantly obstructive sleep apnea (OSA), is highly prevalent in patients with hypertension. OSA may underlie the progression to resistant hypertension, partly due to increased activation of the sympathetic nervous system. This analysis of patients with and without OSA evaluated the blood pressure (BP)-lowering effect of sympathetic modulation by renal denervation (RDN) in a real-world setting. METHODS: The Global SYMPLICITY Registry (NCT01534299) is a prospective, open-label, multicenter registry conducted worldwide to evaluate the safety and effectiveness of RDN in patients with uncontrolled hypertension...
January 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/27906839/endothelin-contributes-to-the-blood-pressure-rise-triggered-by-hypoxia-in-severe-obstructive-sleep-apnea
#7
Christophe Janssen, Atul Pathak, Guido Grassi, Philippe van de Borne
BACKGROUND: Obstructive sleep apnea (OSA) is strongly correlated with an increased risk of systemic hypertension. However, the link between systemic hypertension and nocturnal apneas remains incompletely understood. Animal studies suggest an implication of the endothelin system. The aim of the present study is to determine if endogenous endothelin plays a role in the increase in blood pressure observed during hypoxic episodes in OSA patients, in addition to peripheral chemoreflex and neural sympathetic activation...
January 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/27904155/impact-of-obstructive-sleep-apnea-and-hypertension-on-left-ventricular-hypertrophy-in-japanese-patients
#8
Hiromitsu Sekizuka, Naohiko Osada, Yoshihiro J Akashi
The incidence of cardiovascular disease and mortality rates are high among patients with left ventricular hypertrophy (LVH). Obstructive sleep apnea (OSA) has been reported to increase left ventricular mass (LVM) and cause LVH. The prevalence of hypertension, a major cause of increased LVM, is high in OSA; however, it is still unknown whether OSA is an independent factor that increases LVM in addition to triggering LVH. This study investigated out-of-office blood pressure (BP) via ambulatory BP monitoring (ABPM) in patients with OSA diagnosed by polysomnography (PSG) and sought to determine the effects of OSA and hypertension on LVM...
December 1, 2016: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/27896929/impact-of-inflammation-and-oxidative-stress-on-carotid-intima-media-thickness-in-obstructive-sleep-apnea-patients-without-metabolic-syndrome
#9
Ya-Ting Chang, Hsin-Ching Lin, Wen-Neng Chang, Nai-Wen Tsai, Chih-Cheng Huang, Hung-Chen Wang, Chia-Te Kung, Yu-Jih Su, Wei-Che Lin, Ben-Chung Cheng, Chih-Min Su, Ting-Yao Chen, Yi-Fang Chiang, Cheng-Hsien Lu
Obstructive sleep apnea (OSA) increases the risk of cardiovascular diseases, and carotid intima-media thickness (IMT) is a good indicator of the severity of atherosclerotic disease. This study tested the hypothesis that inflammation and oxidative stress determined carotid IMT in patients with OSA. The carotid IMT, mean systolic and diastolic pressure (night and morning) were significantly higher and the level of thiols and high-density lipoprotein were significantly lower in our 121 OSA patients than in 27 controls (P < 0...
November 28, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27867549/continuous-positive-airway-pressure-therapy-in-non-sleepy-patients-with-obstructive-sleep-apnea-results-of-a-meta-analysis
#10
Dongmei Zhang, Jinmei Luo, Yixian Qiao, Yi Xiao
BACKGROUND: Although continuous positive airway pressure (CPAP) has become the first line of therapy for obstructive sleep apnea (OSA), it remains controversial whether non-sleepy patients could benefit from CPAP treatment. METHODS: We searched the online databases Medline, Embase, the Cochrane library and the Cochrane Central Registry of Controlled Trials to select eligible control trials, including non-sleepy OSA patients and those patients treated by CPAP or either sham CPAP or no CPAP...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27866527/-association-between-daytime-sleepiness-and-hypertension-among-patients-with-obstructive-sleep-apnea-hypopnea-syndrome
#11
L N Du, R Ren, L Tan, T M Li, F Lei, X D Tang, L H Yang
Objective: To assess the association between daytime sleepiness and hypertension among patients with obstructive sleep apnea-hypopnea syndrome (OSAHS). Methods: A total of 1 958 patients from Sleep Medicine Center of West China Hospital between January 2015 and January 2016 were included in the study. All subjects underwent one night polysomnography (PSG) and Epworth sleep scale (ESS) was estimated. The patients were divided into non-OSAHS group[apnea-hypopnea index (AHI)<5/h]and OSAHS group (AHI≥5/h) based on PSG, and then OSAHS group was further divided into those with and without daytime sleepiness groups according to ESS score (the cut point of ESS was 14)...
November 15, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27864139/evening-morning-peroxiredoxin-2-redox-oligomeric-state-changes-in-obstructive-sleep-apnea-red-blood-cells-correlation-with-polysomnographic-and-metabolic-parameters
#12
Amélia Feliciano, Fátima Vaz, Vukosava M Torres, Cristina Valentim-Coelho, Rita Silva, Vesna Prosinecki, Bruno M Alexandre, Ana S Carvalho, Rune Matthiesen, Atul Malhotra, Paula Pinto, Cristina Bárbara, Deborah Penque
We have examined the effects of Obstructive Sleep Apnea (OSA) on red blood cell (RBC) proteome variation at evening/morning day time to uncover new insights into OSA-induced RBC dysfunction that may lead to OSA manifestations. Dysregulated proteins mainly fall in the group of catalytic enzymes, stress response and redox regulators such as peroxiredoxin 2 (PRDX2). Validation assays confirmed that at morning the monomeric/dimeric forms of PRDX2 were more overoxidized in OSA RBC compared to evening samples. Six month of positive airway pressure (PAP) treatment decreased this overoxidation and generated multimeric overoxidized forms associated with chaperone/transduction signaling activity of PRDX2...
November 15, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27855748/ambulatory-blood-pressure-monitoring-in-chinese-obstructive-sleep-apnea-patients
#13
Yan Ma, Shuchen Sun, Chung-Kang Peng, Yeming Fang, Robert J Thomas
STUDY OBJECTIVES: Nocturnal blood pressure (BP) dipping in patients with obstructive sleep apnea (OSA) has not yet been well investigated in Chinese patients, in whom the relationship of OSA and body mass index (BMI) is weaker than that in Caucasians. The aim of this study was to evaluate the BP profile, and the relationships between nocturnal BP and the severity of OSA, in Chinese patients. METHODS: Consecutive Chinese adult outpatients with suspected OSA had overnight polysomnography (PSG), office BP, and 24-h ambulatory BP monitoring (ABPM)...
November 14, 2016: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/27832234/stop-bang-questionnaire-translation-to-portuguese-and-cross-cultural-adaptation-for-use-in-brazil
#14
Lorena Barbosa de Moraes Fonseca, Erika Aparecida Silveira, Nathalia Meireles Lima, Marcelo Fouad Rabahi
Objective: To translate and perform a cross-cultural adaptation of the Snoring, Tiredness, Observed apnea, high blood Pressure, Body mass index, Age, Neck circumference, and Gender (STOP-Bang) questionnaire so that it can be used as a screening tool for the diagnosis of obstructive sleep apnea in Brazil. Methods: Based on the principles of good practice for the translation and cross-cultural adaptation of such instruments, the protocol included the following steps: acquisition of authorization from the lead author of the original questionnaire; translation of the instrument to Brazilian Portuguese, carried out by two translators; reconciliation; back-translation to English, carried out by two English teachers who are fluent in Portuguese; review of the back-translation; harmonization; review and approval of the questionnaire by the original author; cognitive debriefing involving 14 patients who completed the questionnaire; analysis of the results; and review and preparation of the final version of the instrument approved by the review committee...
July 2016: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/27817148/cpap-therapy-for-patients-with-sleep-apnea-and-type-2-diabetes-mellitus-improves-control-of-blood-pressure
#15
Jamie Chung Mei Lam, Agnes Yuen Kwan Lai, Terence Chi Chun Tam, Michele Mae Ann Yuen, Karen Siu Ling Lam, Mary Sau Man Ip
PURPOSE: Obstructive sleep apnea (OSA) is highly associated with type 2 diabetes mellitus (DM), and treatment of OSA may have a positive impact on cardiometabolic profile. This study investigates the effects of continuous positive airway pressure (CPAP) treatment on glycemic control and cardiometabolic parameters in patients with diabetes. METHODS: Diabetic patients, who were newly diagnosed of OSA with an apnea hypopnea index (AHI) ≥15 and HbA1c ≥7%, were randomly assigned to either CPAP treatment or no treatment (control) for 3 months...
November 5, 2016: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/27805899/association-between-obstructive-sleep-apnea-and-metabolic-syndrome-a-meta-analysis
#16
De-Lei Kong, Zheng Qin, Wei Wang, Ying Pan, Jian Kang, Jian Pang
PURPOSE: Evidence suggests that obstructive sleep apnea (OSA) is related to metabolic syndrome; however, the relationship among metabolic syndrome parameters (blood pressure, fasting blood glucose (FBG), high density lipoprotein (HDL) and low density lipoprotein (LDL)) and OSA is unclear. METHODS: PRISMA guidelines were followed for this study. Medline, Cochrane, EMBASE and Google Scholar databases were searched until December 23, 2015, using following terms: obstructive sleep apnea, sleep apnea, OSA and metabolic syndrome...
October 14, 2016: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/27766526/implementation-of-a-novel-postoperative-monitoring-system-using-automated-modified-early-warning-scores-mews-incorporating-end-tidal-capnography
#17
Joseph M Blankush, Robbie Freeman, Joy McIlvaine, Trung Tran, Stephen Nassani, I Michael Leitman
Modified Early Warning Scores (MEWS) provide real-time vital sign (VS) trending and reduce ICU admissions in post-operative patients. These early warning calculations classically incorporate oxygen saturation, heart rate, respiratory rate, systolic blood pressure, and temperature but have not previously included end-tidal CO2 (EtCO2), more recently identified as an independent predictor of critical illness. These systems may be subject to failure when physiologic data is incorrectly measured, leading to false alarms and increased workload...
October 20, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27755119/sympathetic-nerves-and-hypertension-in-stress-sleep-apnea-and-caregiving
#18
Michael G Ziegler, Milos Milic
PURPOSE OF REVIEW: The sympathetic nervous system (SNS) mediates short-term increases in blood pressure. Evidence that psychosocial stress leads to chronic hypertension is mixed. The SNS activation found in obstructive sleep apnea (OSA), caregiving for a severely demented spouse, and obesity more specifically address whether SNS activation might lead to the metabolic syndrome and hypertension. RECENT FINDINGS: Obesity is associated with both increased SNS electrical activity and plasma norepinephrine...
January 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/27754829/potential-inflammatory-markers-in-obstructive-sleep-apnea-hypopnea-syndrome
#19
Dongmei Lu, Nanfang Li, Xiaoguang Yao, Ling Zhou
Obstructive sleep apnea-hypopnea syndrome (OSAHS) is a complex chronic inflammatory respiratory disease with multiple pathogenic factors and high morbidity and mortality. Serum levels of nuclear factor-κB (NF-κB), hypoxia-inducible factor-1 alpha (HIF-1α), and surfactant protein D (SPD) were investigated in OSAHS patients, to determine their clinical significance and correlation with the pathogenesis. Patients were classified into a mild and moderate OSAHS group (n = 25) and severe OSAHS group (n = 33). Twenty healthy patients served as a control group...
October 18, 2016: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/27754279/hw-03-2-effect-of-cpap-on-the-treatment-of-resistant-hypertension
#20
Seong Hwan Kim
Resistant hypertension is defined as blood pressure that remains above 140/90 mmHg in spite of the concurrent use of three antihypertensive agents of different classes at optimal dosing, of which one should be a diuretic. Accordingly, it is not synonymous with uncontrolled hypertension. Among a variety of risk factors, obstructive sleep apnea (OSA), which is a common type of sleep-disordered breathing, has been recognized a well-established risk factor for resistant hypertension. Indeed, both European and American guidelines for the management of arterial hypertension stated that OSA is a modifiable cause of resistant hypertension...
September 2016: Journal of Hypertension
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