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Apnea hypopnea index

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https://www.readbyqxmd.com/read/27913972/in-hospital-diagnosis-of-sleep-apnea-in-stroke-patients-using-a-portable-acoustic-device
#1
Clodagh M Ryan, Kelly Wilton, T Douglas Bradley, Hisham Alshaer
PURPOSE: Sleep apnea (SA) is highly prevalent in post-stroke patients. Due to physical disability and relative inaccessibility of polysomnography (PSG) to test for SA, patients with stroke frequently remain undiagnosed and untreated. Portable SA monitoring can facilitate at-home or in-hospital testing for SA. However, portable SA monitoring is not recommended in those with complex medical conditions, such as stroke, due to the lack of validation of portable monitoring in such patients...
December 2, 2016: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/27913971/myofunctional-therapy-improves-adherence-to-continuous-positive-airway-pressure-treatment
#2
Giovana Diaféria, Rogerio Santos-Silva, Eveli Truksinas, Fernanda L M Haddad, Renata Santos, Silvana Bommarito, Luiz C Gregório, Sergio Tufik, Lia Bittencourt
PURPOSE: Few studies have investigated myofunctional therapy in patients with obstructive sleep apnea syndrome (OSAS). The objective of this study was to evaluate the effect of myofunctional therapy on continuous positive airway pressure (CPAP) adherence. METHODS: The study was registered at ClinicalTrials.gov (NCT01289405). Male patients with OSAS were randomly divided into four treatment groups: placebo, patients undergoing placebo myofunctional therapy (N = 24); myofunctional therapy, undergoing myofunctional therapy (N = 27); CPAP, undergoing treatment with CPAP (N = 27); and combined, undergoing CPAP therapy and myofunctional therapy (N = 22)...
December 2, 2016: Sleep & Breathing, Schlaf & Atmung
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
#3
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/27906839/endothelin-contributes-to-the-blood-pressure-rise-triggered-by-hypoxia-in-severe-obstructive-sleep-apnea
#4
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
#5
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/27902610/mean-apnea-hypopnea-duration-but-not-apnea-hypopnea-index-is-associated-with-worse-hypertension-in-patients-with-obstructive-sleep-apnea
#6
Hao Wu, Xiaojun Zhan, Mengneng Zhao, Yongxiang Wei
To determine which polysomnography parameters are associated with severity of hypertension.This retrospective study collected data on all patients admitted to our urban, academic center in Beijing with hypertension who had undergone polysomnograms (PSG) and were diagnosed with obstructive sleep apnea (OSA) (apnea-hyponea index [AHI] ≥5/hour). We then compared polysomnographic parameters (AHI, oxygen desaturation index [ODI], lowest oxygen saturation [LOS], and mean apnea-hypopnea duration [MAD]) by hypertension severity in this cohort...
November 2016: Medicine (Baltimore)
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
#7
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/27893073/association-between-severity-of-obstructive-sleep-apnea-and-number-and-sites-of-upper-airway-operations-with-surgery-complications
#8
Zamzil Amin Asha'ari, Jamalludin Ab Rahman, Abdul Hadi Mohamed, Kahairi Abdullah, Wan Ishlah Leman
Importance: In patients with obstructive sleep apnea (OSA), operative risks depend on the severity of the underlying OSA and the invasiveness of the surgical procedure. Objective: To investigate the nature of the associations between the severity of OSA and the number and anatomical sites of upper airway operations with operative complications. Design, Setting, and Participants: This retrospective study included adult patients diagnosed with OSA (apnea-hypopnea index [AHI], >5) who underwent upper airway surgery at a single tertiary referral hospital between October 1, 2008, and October 1, 2015...
November 23, 2016: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/27884081/a-randomized-cross-over-study-comparing-the-efficacy-of-two-mandibular-advancement-appliances-in-the-treatment-of-mild-moderate-obstructive-sleep-apnea
#9
Ayman Al-Dharrab
OBJECTIVE: To compare efficacy, side effects, patient compliance, and preference between two types of custom-made mandibular advancement appliances (MAAs) in the treatment of patients with mild to moderate obstructive sleep apnea (OSA). METHODOLOGY: This prospective, randomized, crossover study of 12 patients with mild to moderate OSA compared a titratable and a non-titratable MAA. Each patient was fitted with both appliances in a random order with a washout period of two weeks...
November 24, 2016: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/27882098/validation-of-a-novel-sleep-monitoring-system-for-diagnosing-obstructive-sleep-apnea-a-comparison-with-polysomnography
#10
Lili Meng, Huajun Xu, Jian Guan, Hongliang Yi, Hongmin Wu, Shankai Yin
Overnight polysomnography (PSG) is currently the gold standard for diagnosing obstructive sleep apnea (OSA); however, it is time-consuming, expensive and uncomfortable for the patient. A micromovement sensitive mattress (MSM) sleep-monitoring system was developed as an alternative to PSG, however, there has yet to be a study verifying the accuracy of diagnosing OSA with this device. Therefore, the present study assessed the validity of the MSM sleep-monitoring system. Chinese Han participants who were suspected of having OSA were recruited between June 2013 and June 2014...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27876406/adenotonsillectomy-can-decrease-enuresis-and-sympathetic-nervous-activity-in-children-with-obstructive-sleep-apnea-syndrome
#11
Hao Ding, Mengmei Wang, Ke Hu, Jing Kang, Si Tang, Wen Lu, Lifang Xu
BACKGROUND: The nocturnal intermittent hypoxia caused by obstructive sleep apnea syndrome (OSAS) can provoke the sympathetic nervous activity (SNA). Salivary alpha-amylase (sAA) is a sensitive, non-invasive biomarker for reflecting the SNA, and a useful marker for pediatric OSAS subjects. Adenotonsillar hypertrophy (ATH) is the most commonly identified risk factor in OSAS childhood, therefore, several studies showed that the adenotonsillectomy (T&A) may alleviate nocturnal enuresis (NE) in children with OSAS...
November 9, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27874164/-rem-related-osa-a-forgotten-diagnostic-possible-path-to-under-diagnosing-sleep-apnea
#12
A Beneto, S Soler-Algarra, V Salavert
INTRODUCTION: Restrictive criteria are proposed to define the disorder 'REM-related OSA' disorder, and questions remain about its nosological transcendence and clinical management. AIM: To evaluate the criteria proposed to define 'REM-related OSA', its relationship with cardio-metabolic comorbidity, and aspects related to it diagnostic. PATIENTS AND METHODS: Retrospective observational study of clinical and polysomnographic data from outpatients...
December 1, 2016: Revista de Neurologia
https://www.readbyqxmd.com/read/27866527/-association-between-daytime-sleepiness-and-hypertension-among-patients-with-obstructive-sleep-apnea-hypopnea-syndrome
#13
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/27865790/maxillomandibular-advancement-surgery-for-patients-who-are-refractory-to-continuous-positive-airway-pressure-are-there-predictors-of-success
#14
Igor Makovey, Anita Valanju Shelgikar, Jeffrey J Stanley, Adina Robinson, Sharon Aronovich
PURPOSE: This pilot study was conducted to determine the effectiveness of maxillomandibular advancement (MMA) in the treatment of patients with moderate to severe obstructive sleep apnea (OSA). The predictive value of clinical, radiographic, and treatment-related variables also was investigated in relation to the success or failure of MMA as treatment for OSA. MATERIALS AND METHODS: A retrospective study design was used to assess the outcomes of MMA in patients with moderate to severe OSA (apnea hypopnea index [AHI] >15 events per hour) at the University of Michigan (Ann Arbor, MI)...
October 26, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27864041/apnea-hypopnea-index-prediction-through-an-assessment-of-autonomic-influence-on-heart-rate-in-wakefulness
#15
Da Woon Jung, Yu Jin Lee, Do-Un Jeong, Kwang Suk Park
With the high prevalence of obstructive sleep apnea, the issue of developing a practical tool for obstructive sleep apnea screening has been raised. Conventional obstructive sleep apnea screening tools are limited in their ability to help clinicians make rational decisions due to their inability to predict the apnea-hypopnea index. Our study aimed to develop a new prediction model that can provide a reliable apnea-hypopnea index value during wakefulness. We hypothesized that patients with more severe obstructive sleep apnea would exhibit more attenuated waking vagal tone, which may result in lower effectiveness in decreasing heart rate as a response to deep inspiration breath-holding...
November 15, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27863643/the-safety-and-efficacy-of-pediatric-lingual-tonsillectomy
#16
M A DeMarcantonio, E Senser, J Meinzen-Derr, N Roetting, S Shott, S L Ishman
OBJECTIVE: Lingual tonsillar hypertrophy is recognized as a cause of persistent obstructive sleep apnea (OSA) after adenotonsillectomy in children. However, little has been reported regarding the complications, postoperative course and effectiveness of lingual tonsillectomy (LT). Our objective was to review the safety and effectiveness of LT in children. METHODS: Retrospective review of children undergoing LT from January 2009 to December 2015 at a tertiary children's hospital...
December 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27863630/comparison-of-treatment-outcomes-between-intracapsular-and-total-tonsillectomy-for-pediatric-obstructive-sleep-apnea
#17
David T Chang, Allison Zemek, Peter J Koltai
BACKGROUND: Intracapsular tonsillectomy (IT) has been advocated as a treatment for pediatric obstructive sleep apnea (OSA). However, evidence in the literature utilizing polysomnography (PSG) is limited. OBJECTIVE: To examine the experience at a tertiary children's hospital to evaluate the effectiveness and risks of intracapsular tonsillectomy compared to total tonsillectomy (TT) for treating pediatric OSA. METHODS: A retrospective study was undertaken of pediatric tonsillectomy cases performed for OSA at a tertiary children's hospital from 2005 to 2010...
December 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27861349/therapeutic-outcomes-of-mandibular-advancement-devices-as-an-initial-treatment-modality-for-obstructive-sleep-apnea
#18
Pona Park, Hyoung Won Jeon, Doo Hee Han, Tae-Bin Won, Dong-Young Kim, Chae-Seo Rhee, Hyun Jik Kim
Although continuous positive airway pressure (CPAP) is a highly efficacious treatment for obstructive sleep apnea (OSA), there is a need for alternative treatment options, such as sleep surgeries and mandibular advancement devices (MADs), to overcome the limitations of CPAP.This study aimed to analyze the therapeutic outcomes of OSA subjects who were treated with a MAD, and to estimate the clinical impact of MAD as a first-line treatment for OSA.Forty-seven patients diagnosed with OSA received an adjustable MAD as an initial treatment...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27857049/sleep-disordered-breathing-and-excessive-daytime-sleepiness-in-patients-with-epilepsy-a-polysomnographic-study
#19
(no author information available yet)
OBJECTIVES: Epilepsy and sleep-disordered breathing (SDB) are relatively common disorders. SDB induces repetitive arousals and sleep fragmentation and may cause symptomatic epileptic seizures or hypoxic encephalopathy. Epileptic seizures change sleep architecture with increase of light sleep and reduction of REM sleep, which may lead to central apneas. The aim of this study was to evaluate the relationship between SDB and daytime sleepiness in patients with epilepsy, who underwent polysomnography (PSG) due to problems with breathing during sleep or due to excessive daytime sleepiness...
September 18, 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/27856716/relationship-between-obstructive-sleep-apnea-and-endogenous-carbon-monoxide
#20
Masanori Azuma, Kimihiko Murase, Ryo Tachikawa, Satoshi Hamada, Takeshi Matsumoto, Takuma Minami, Morito Inouchi, Kiminobu Tanizawa, Tomohiro Handa, Toru Oga, Michiaki Mishima, Kazuo Chin
Endogenous carbon monoxide (CO) levels are recognized as a surrogate marker for activity of heme oxygenase-1 (HO-1), which is induced by various factors including hypoxia and oxidative stress. Few reports have evaluated endogenous CO in patients with obstructive sleep apnea (OSA). Whether exhaled or blood CO is more reflected by OSA is not known. Sixty-nine patients with suspected OSA were prospectively included in this study. Exhaled and blood CO were evaluated at night and morning. Blood and exhaled CO levels were well correlated both at night and morning (r=0...
November 17, 2016: Journal of Applied Physiology
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