The chart above shows a five-second excerpt of record 0000 from the SHHS Polysomnography Database. An obstructive apnea ("Ob.A", annotated near the top of the chart) begins during this excerpt; the annotation indicates that the total duration of this event was 15.1 seconds, during which SaO2 dropped by 2% to a minimum level of 95%. To explore the data surrounding this event, click here.. Access to the complete SHHS data set, including all 9736 polysomnograms and additional covariate data, is available from the Sleep Heart Health Study upon special request and approval. Please visit the SHHS web site for details.. The Sleep Heart Health Study is supported by National Heart, Lung and Blood Institute cooperative agreements U01HL53940 (University of Washington), U01HL53941 (Boston University), U01HL53938 (University of Arizona), U01HL53916 (University of California, Davis), U01HL53934 (University of Minnesota), U01HL53931 (New York University), U01HL53937 and U01HL64360 (Johns Hopkins University), ...
Gruber, G.; Saletu, B.; Kloesch, G.; Frey, R.; Anderer, P., 1996: Insomnia based on generalized anxiety disorder A comparison of self reported sleep-quality and polysomnographic data
Aim: To analyze the prevalence and possible associated factors with the Sleep Apnea - Hypopnea Syndrome (SAHS) among patients evaluated for Lung Transplantation (LT). Methods: Transversal descriptive study of a cohort of patients evaluated for LT, with a standard polysomnography (PSG), from September 2008 to February 2012. SAHS was defined as the presence of Apnea Hypopnea Index (AHI) ≥ 10 and excessive daytime sleepiness symptoms. Severity of these symptoms was evaluated by Epworth sleepiness scale. Anthropometric, clinical and blood test measurements were also analyzed in all patients. Results: During this period a number of 52 patients were studied, 50% of them were man, average age was 54,8 years (SD ± 9.96). Principal LT indication pathologies were due to COPD (46.2%), Pulmonary Idiopathic Fibrosis (15.4%) and Usual Interstitial Pneumonitis (11.5%). PSG were performed with supplementary oxygen in 96.2% of the cases. AHI average was 8,26 (SD±1.4). SAHS was diagnosed in 13 patients (25%). ...
In-laboratory, attended polysomnography (PSG) is a diagnostic test for sleep-related breathing disorders, and it is also used in conjunction with the clinical history and other tests to diagnose a variety of additional sleep disorders, including narc
Background:Obstructive sleep apnea (OSA) is common in severely obese subjects (body mass index [BMI] | 35). Overnight polysomnography (OPS) is the gold standard method of evaluating this condition; however, it is time-consuming, inconvenient, and expensive. Selection of patients for OPS would be e
The UCSF Sleep Disorders Center offers a comprehensive range of services and treatments for conditions such as sleep apnea, insomnia, limb movements and more.
National Research Resource Resource offers free web access to large collections of de-identified physiological signals and clinical data elements collected in well-characterized research cohorts and clinical trials. The initial data resource is from the Sleep Heart Health Study.
The Dartmouth-Hitchcock Sleep Disorders Center provides consultation and testing for all varieties of sleep-related disturbances.
Sleep Disorders is a peer-reviewed, Open Access journal that publishes original research articles, review articles, and clinical studies related to all aspects of sleep disorders.
Learn more about Polysomnography at Doctors Hospital of Augusta DefinitionReasons for TestPossible ComplicationsWhat to ExpectCall Your Doctorrevision ...
Learn more about Polysomnography at Portsmouth Regional Hospital DefinitionReasons for TestPossible ComplicationsWhat to ExpectCall Your Doctorrevision ...
Our sleep technichians would would set up a study for your child. It would take around 15-20 minutes to set up a Cardiorespiratory Study but might take upto an hour or longer to set up a full Polysomnography study. The set-up procedure is done while the child is awake and is painless. It would be done as soon as you arrive in the sleep unit which is situated on the third floor of our hospital. In case some children are non-coopertaive then we would set up after the child has fallen asleep ...
Evanston Hospital procedure pricing information for a Sleep Study (Polysomnography) can be found listed below. Find a cost comparison to other providers in Chicago, IL and see your potential savings.
Background: Synthesis of erythropoietin (EPO) is stimulated by tissue hypoxia. Sleep apnea- hypopnea syndrome (OSA) is characterized by the presence of repeated episodes of hypoxemia. Aim: The objective of this study is to investigate whether hypoxemia induced by OSA could be a stimulus to increase EPO production. Methods: The study was conducted in 24 patients being investigated for OSA. A full polysomnography through a nights sleep was recorded and analyzed manually according to standard criteria. We determined the EPO levels in samples of first morning urine (sandwich ELISA technique). Serum creatinine, hematocrit and hemoglobin levels were additionally determined. Results: Of the 24 patients studied, 18 were diagnosed from OSA (AHI, 10) with the following results (mean ± SD): apnea/hypopnea index (AHI) 30.8 ± 23.1, desaturation index (HDI) 27 ± 16.9, CT90% 5.7 ± 7.8, mean length of nocturnal desaturation 25.7 ± 10.5 sec., average nocturnal SatO2 93.9 ± 1.6. Creatinine was within ...
You will come to the sleep center, during normal office hours, to pick up the device and receive instructions for the study. The home test consists of a nasal cannula to measure breathing, a belt on your chest to measure breathing effort, and an oxygen monitor on your finger. We ask for at least seven hours of recording time. Once the study is completed, anyone can return the device to the sleep center by noon the following day. There is a drop-box located outside for your convenience ...
Objective: The aim of this prospective study is to determine which patients may benefit from pillar procedure as a treatment for snoring. Methods: A total of 37 patients (25 males and 12 females) with a history of snoring were implanted with 3 pillar palatal implants. Flexible fiberoptic examination was used to evaluate the upper airway, especially the retropalatal and retrolingual areas. Visual analog scale (VAS) and polysomnography were performed on before and 3rd months after the pillar procedure. The implantation was performed under local anesthesia. Results: The mean VAS score was reduced from 9.3±0.6 to 6.2±1.1 at the 3rd month. VAS scores of snoring intensity were reduced >50% in 24 of the patients (64.8%). The mean apnea-hypopnea index (AHI) was 11.7±2.3 before the implantation and was reduced to 8.4±1.6 at the 3rd month. VAS and AHI had a close relation with gender, body weight, and oropharynx class. There were no major complications, such as infection, extrusion, and major ...
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Do you need help finding information on a specific topic? In addition to using our face-to-face, online and phone Ask A Librarian options, you may call or email me to set up an appointment or to explain what you need (I can often help you via email). Please remember that while I can assist you in finding information and can educate you about locating and citing quality health resources, I cannot diagnose or recommend treatment for specific conditions or diseases. I also cannot interpret assignments--ask your instructor! I will always refer specific medical and assignment-related questions back to your health care provider or instructor. Your questions will be kept in confidence and your privacy will be respected.. ...
Dr. Arenberg responded: Makes no sense. This sounds like a computer generated report that might have been mis-interpreted by you. Regardless, minor changes in pfts cannot be interpreted out of context, just like strange noises your car makes cannot be diagnosed without looking at the car.
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JS Hartford-Beynon and MV Copp-Critical Respiratory Events in the Post Anaesthesia Care Unit: A Case Report and Overview of the Literature
Adverse outcomes associated with respiratory events continue to constitute the single largest class of injury in Closed Claims Study... read more.
Although Ive had my new ResMed AirSense for two weeks I just tried Sleepyhead for the first time two nights ago. A screenshot is attached. The data looks pretty good to me but I dont know how to int
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Respiration 1997; 64(2):159-61. ABSTRACT. We studied the effects of modafinil, a vigilance-enhancing drug, on excessive daytime sleepiness, memory, night sleep and respiration in 6 patients with obstructive sleep apnea-hypopnea syndrome (OSAHS) using a double-blind random cross-over design with 24-hour polysomnography, verbal memory test and a 5-week sleep-wake diary kept by the patients. There were two 2-week treatment periods in which either modafinil or placebo was used; they were separated by a 1-week wash-out period. Our results show that modafinil reduces daytime sleep duration, lengthens the duration of subjective daytime vigilance and improves long-term memory in patients with OSAHS without modifying night sleep and respiration events.. ...
BACKGROUND--Increasing referral numbers make the development of simplified accurate methods of diagnosing the sleep apnoea/hypopnoea syndrome highly desirable. The accuracy of one such system--the ResCare Autoset--has been examined. METHODS--Thirty one consecutive patients assessed by polysomnography had simultaneous monitoring of their respiratory pattern using the Autoset system. The Autoset detects episodes of flattening of the flow/time profile using nasal cannulae. RESULTS--There was a good correlation (r = 0.85) between the number of apnoeas+hypopnoeas/hour in bed recorded using polysomnography and the Autoset system. The median difference in such events was 3.1 (95% confidence interval 8.4 to -1.6)/hour in bed. In two patients the Autoset scored 70 apnoeas+hypopnoeas/hour in bed compared with 34 apnoeas+hypopnoeas with 35 arousals/hour in bed by polysomnography; however, this did not alter the diagnostic category of either patient. Autoset gave a sensitivity of 100%, specificity of 92%, ...
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Patients with sleep apnea/hypopnea syndrome commonly demonstrate impaired daytime performance. In a prospective study, 29 patients with sleep apnea/hypopnea syndrome were assessed polysomnographically to determine the relationship of cognitive performance and daytime sleepiness with sleep disruption …
Lifestyle modification, particularly weight loss, has been advocated as a treatment modality for obstructive sleep apnoea syndrome (OSAS). Surprisingly, there is a lack of well-conducted clinical trials; available studies have either been small and/or non-randomised. One reason could be that it has become popular to use devices such as continuous positive airway pressure (CPAP) or mandible retraction devices as mechanical tools rather than try to address the underlying problem, which generally is excess fatness in the throat area. In a report, from the International Diabetes Federation investigating the association between type 2 diabetes and sleep- disordered breathing, a number of recommendations were given. Apart from increased awareness and improved clinical practice the working party strongly suggested appropriately powered randomised control trials of weight loss in patients with OSAS and diabetes, including the use of anti-obesity medication. The party also suggest the development of ...
Obstructive sleep apnea (OSA) is the most common type of sleep apnea and is caused by complete or partial obstructions of the upper airway. It is characterized by repetitive episodes of shallow or paused breathing during sleep, despite the effort to breathe, and is usually associated with a reduction in blood oxygen saturation. These episodes of decreased breathing, called "apneas" (literally, "without breath"), typically last 20 to 40 seconds. Individuals with OSA are rarely aware of difficulty breathing, even upon awakening. It is often recognized as a problem by others who observe the individual during episodes or is suspected because of its effects on the body. OSA is commonly accompanied with snoring. Some use the terms obstructive sleep apnea syndrome or obstructive sleep apnea-hypopnea syndrome to refer to OSA which is associated with symptoms during the daytime. Symptoms may be present for years or even decades without identification, during which time the individual may become ...
TY - JOUR. T1 - Impact of obstructive sleep apnea on blood pressure and cardiovascular risk factors in Japanese men. T2 - A cross-sectional study in work-site group. AU - Morinaga, Yuki. AU - Matsumura, Kiyoshi. AU - Kansui, Yasuo. AU - Sakata, Satoko. AU - Goto, Kenichi. AU - Haga, Yoshie. AU - Oishi, Emi. AU - Seki, Takunori. AU - Ohtsubo, Toshio. AU - Kitazono, Takanari. PY - 2018/1/2. Y1 - 2018/1/2. N2 - It has been shown that obstructive sleep apnea (OSA) is related to hypertension and cardiovascular disease; however, the prevalence of OSA in general population and the impact of it on blood pressure especially in Japan has not been well determined. We have conducted a screening test for OSA from 2003 to 2011. In addition, a cross-sectional analysis was performed in 2012 to determine the association of OSA and cardiovascular risk factors in Japanese men (18-69 years of age; mean age, 44.4 ± 0.2). The study group consisted of 2208 male employees, and OSA was evaluated by using the 4% oxygen ...
Background: Childhood obstructive sleep apnoea (OSA) is suggested to be associated with cardiac structural abnormalities and dysfunction but existing evidence are limited and the treatment effect on echocardiographic outcome remains controversial. Objective: To examine for the presence of subclinical cardiac abnormalities in childhood OSA and the effects of treatment on cardiac changes. Methods: Polysomnography (PSG) and echocardiographic examinations were performed on 101 children aged between 6 and 13 years were invited from a community based questionnaire survey. They were classified into reference group (Apnoea-hypopnoea index (AHI),1, n=35), mild OSA group (AHI 1-5, n=39) and moderate-to-severe group (AHI,5, n=27) based on PSG result. Treatments including adenotonsillectomy or nasal steroid were offered to the mild and moderate-to-severe OSA group. Results: Moderate-to-severe OSA group had greater right ventricular (RV) systolic volume index (RVSVI), lower RV ejection fraction (RVEF) and ...
Obstructive sleep apnea is a significant medical problem affecting up to 4 percent of middle-aged adults. The most common complaints are loud snoring, disrupted sleep and excessive daytime sleepiness. Patients with apnea suffer from fragmented sleep and may develop cardiovascular abnormalities because of the repetitive cycles of snoring, airway collapse and arousal. Although most patients are overweight and have a short, thick neck, some are of normal weight but have a small, receding jaw. Because many patients are not aware of their heavy snoring and nocturnal arousals, obstructive sleep apnea may remain undiagnosed; therefore, it is helpful to question the bedroom partner of a patient with chronic sleepiness and fatigue. Polysomnography in a sleep laboratory is the gold standard for confirming the diagnosis of obstructive sleep apnea; however, the test is expensive and not widely available. Home sleep studies are less costly but not as diagnostically accurate. Treatments include weight loss, nasal
To breathe regularly and smoothly at night is not only socially correct but also healthy. Individuals who snore with trepidation and have lapses in their respiratory rhythm while asleep may be at increased risk of suffering a stroke, as Mohsenin points out in the preceding article.. The role of disruptive snoring and sleep apnea disorder, or sleep-disordered breathing (SDB), in circulatory alteration and vascular injury is a concept of recent development.R1 Evidence of an association between SDB and sustained systemic hypertension, has become available recently. Results from the large community-based Sleep Heart Health StudyR2 indicate that there is a dose-response relationship between SDB and hypertension. The adjusted odds of hypertension increased steadily with apnea-hypopnea index (AHI) values of 15/h to 20/h and higher measured at home, surpassing odds ratios of 2 for very high AHI values. In a similar prospective study of SDB and hypertension, the Wisconsin Sleep Cohort StudyR3 showed that ...
Different profiles. Obstructive sleep apnea patients treated with surgery often have contributing anatomic findings, such as mandibular retrognathia, constricted posterior airway space, and increased upper airway length. Body mass index may be less of a factor in the development of OSA in these patients, according to the studys authors.. To learn more about the comorbidity profiles of OSA patients treated with MMA surgery and those managed medically, the investigators conducted a retrospective cohort study of these patients treated at Massachusetts General Hospital in 2001 through 2015. They hypothesized that surgical OSA patients would have fewer medical comorbidities than nonsurgical OSA patients.. The study included 51 surgical and 71 nonsurgical patients, all with OSA confirmed by polysomnogram. All patients had complete clinical records that included BMI, respiratory disturbance index, apnea-hypopnea index, and oxygen saturation nadir results.. The surgical patients were significantly ...
The current evidence in adults suggests that, independent of obesity, obstructive sleep apnea (OSA) can lead to both autonomic dysfunction and impaired glucose metabolism. These relationships have been less well studied in children. Since sleep-disordered breathing occurs in over 13% of the obese pediatric population, knowledge about the autonomic and metabolic effects of OSA is crucial in determining the importance of OSA as an independent factor in promoting the development of childhood metabolic syndrome. The hypothesis in this study is that OSA severity in overweight/obese children is associated with both autonomic abnormality and insulin resistance. This study will also investigate if there is a direct association between autonomic dysfunction and insulin resistance. ❧ To evaluate this hypothesis, overnight polysomnographic studies and tests of metabolic and autonomic function were conducted in 22 obese male subjects (age: 13.4 ± 2.1 years (mean ± SD), BMI>95% for age) with varying ...
STUDY OBJECTIVES: To assess the prevalence of sleep-disordered breathing in a nonselected group of children with Down syndrome and to determine significant predisposing factors for this condition. DESIGN: Prospective study. SETTING: Tertiary care university hospital in Madrid, Spain. PATIENTS: The study population included 108 consecutive children with Down syndrome (mean [SD] age, 7.9 [4.5] years; range, 1-18 years) independently of whether or not suggestive clinical features of sleep-disordered breathing were present. INTERVENTIONS: In addition to history, physical examination, and lateral radiographs of the nasopharynx, all participants underwent an overnight cardiorespiratory polygraphy at the hospital using a portable ambulatory device (Apnoescreen II plus). An apnea-hypopnea index of at least 3 was required for defining the presence of sleep-disordered breathing. RESULTS: The prevalence of sleep-disordered breathing was 54.6%, with a significantly higher prevalence in boys (64.7%) than in ...
Polysomnography (PSG), a type of sleep study, is a multi-parametric test used in the study of sleep and as a diagnostic tool in sleep medicine. The test result is called a polysomnogram, also abbreviated PSG. The name is derived from Greek and Latin roots: the Greek πολύς (polus for "many, much", indicating many channels), the Latin somnus ("sleep"), and the Greek γράφειν (graphein, "to write"). Polysomnography is a comprehensive recording of the biophysiological changes that occur during sleep. It is usually performed at night, when most people sleep, though some labs can accommodate shift workers and people with circadian rhythm sleep disorders and do the test at other times of day. The PSG monitors many body functions including brain (EEG), eye movements (EOG), muscle activity or skeletal muscle activation (EMG) and heart rhythm (ECG) during sleep. After the identification of the sleep disorder sleep apnea in the 1970s, the breathing functions respiratory airflow and respiratory ...
Polysomnographic recordings (≥ 7 h) were performed for each participant on 2 consecutive nights. Surface electrodes included 2 electroencephalograms (EEG: C3A2 and O2A1), bilateral electroculograms (EOGs), an electrocardiogram (ECG), and 7 EMGs on the chin/suprahyoid, bilateral masseter, temporalis, and anterior tibialis muscles. All masseter and temporalis EMG channels were used to score RMMA. A detailed description of the method is provided elsewhere.18 To assess respiratory function and exclude sleep breathing disorders, nasal airflow was measured with a thermistor sensor (Thermocouple; Protech, Woodinville, WA, USA). Respiratory efforts were assessed with thoracic and abdominal effort belts. Oximetry was continuously monitored with a finger pulse oximeter (Datex-Ohmeda; Louisville, CO). All signals were recorded using acquisition and analysis software (Harmonie Software; Stellate Systems; Montreal, QC, Canada). Simultaneous audio-video recordings were made for visual scoring of sleep motor ...
Obstructive sleep apnea (OSA)-also referred to as obstructive sleep apnea-hypopnea (OSAH)-is a sleep disorder that involves cessation or significant decrease in airflow in the presence of breathing effort. It is the most common type of sleep-disordered breathing (SDB) and is characterized by recurrent episodes of upper airway (UA) collapse du...
Adults with obstructive sleep apnea (OSA) who experience excessive sleepiness while awake appear to be at far greater risk for cardiovascular diseases than those without excessive daytime sleepiness, according to new research published online in the American Thoracic Societys American Journal of Respiratory and Critical Care Medicine.. In "Symptom Subtypes of Obstructive Sleep Apnea Predict Incidence of Cardiovascular Outcomes," Diego R. Mazzotti, PhD, and coauthors report on a study of adults with moderate to severe OSA who were categorized into 4 subtypes according to the symptoms they report: disturbed sleep, minimally symptomatic, moderately sleepy, and excessively sleepy.. Previous studies have linked OSA and cardiovascular disease. To understand this association better, researchers have begun to categorize patients with OSA based on their symptoms.. "Multiple studies from our group have shown that patients with moderate to severe OSA throughout the world can be categorized into specific ...
This apnea hypopnea index (AHI) calculator evaluates the degree of apnea severity and helps in the diagnosis of obstructive sleep apnea.
I] included 10 patients with OSA and type 2 diabetes mellitus, II] included 10 patients with OSA and impaired glucose homeostasis and Ill] included 10 patients with OSA and normal glucose homeostasis. All patients were subjected to the followings: complete history taking, thorough clinical examination and laboratory investigations such as; serum uric acid, glycosylated hemoglobin and atrial natriuretic peptide. Complete lipid profile was done including serum cholesterol, triglycerides, LDL-cholesterol and HDL-cholesterol. Oral glucose tolerance test, peripheral insulin sensitivity and insulin resistance were measured using 75 gm glucose. Limited channel polysomnography was done to detect sleep-related breathing disorders. The result of the present work can be summarized as follows: the apnea-hypopnea index [AHI] was significantly higher in the diabetic patients and patients with impaired glucose homeostasis than those with normal glucose homeostasis [F = 5.628, P < 0.05] . The apnea-hypopnea ...
Noiselezz is a mandibular advancement orthesis the patient wears when sleeping. It consists of two mouthpieces attached to the upper and lower dental arches and connected by a hinge. Noiselezz is easily adaptable to all mouth types, because it is made up of a material keeping its shape according to your jaw. The mandibular advancement orthesis exerts a forward strength over the jaw, holding forward your tongue and the soft palate, making more space in the respiratory tract. Without Noiselezz = Respiratory tracts are blocked With Noiselezz = Respiratory tracts are free open The treatment is efficient on patients which suffer from snoring and mild to moderate obstructive sleep apnea. For severe obstructive sleep apnea, you should consult a sleep specialist and follow a heavier treatment. Noiselezz is recommended in case of: - Snoring. - Mild to moderate sleep apnea. Noiselezz is unadvisable in case of: -
Background: It has been suggested that patients with obstructive sleep apnea (OSA) have subclinical myocardial dysfunction that may account for their risk of heart failure. This study sought to examine whether myocardial characteristics and function, as determined by echocardiographic integrated backscatter and tissue Doppler imaging, might be altered in patients with OSA.. Methods: Thirty-seven patients with suspected OSA (32 men and 5 women) underwent clinical evaluation, overnight polysomnography, and echocardiographic assessment. For assessing subclinical myocardial function, the myocardial reflectivity (integrated backscatter intensity) of the ventricular septum (IBI-sp) and posterior wall (IBI-pw), and the systolic (Sa) and diastolic (Ea) velocity at the mitral annulus were obtained. Variables were compared between patients with apnea-hypopnea index (AHI) ,15 (n=17) and those with AHI ≥15 (n=20).. Results: Although age and global parameters of LV function were similar, moderate-to-severe ...
Several studies have shown differences in acoustic snoring characteristics between patients with Sleep Apnea-Hypopnea Syndrome (SAHS) and simple snorers. Usually a few manually isolated snores are analyzed, with an emphasis on postapneic snores in SAHS patients. Automatic analysis of snores can provide objective information over a longer period of sleep. Although some snore detection methods have recently been proposed, they have not yet been applied to full-night analysis devices for screening purposes. We used a new automatic snoring detection and analysis system to monitor snoring during full-night studies to assess whether the acoustic characteristics of snores differ in relation to the Apnea-Hypopnea Index (AHI) and to classify snoring subjects according to their AHI. A complete procedure for device development was designed, using databases with polysomnography (PSG) and snoring signals. This included annotation of many types of episodes by an expert physician: snores, inspiration and ...
Obstructive sleep apnea (OSA)-also referred to as obstructive sleep apnea-hypopnea (OSAH)-is a sleep disorder that involves cessation or significant decrease in airflow in the presence of breathing effort. It is the most common type of sleep-disordered breathing (SDB) and is characterized by recurrent episodes of upper airway (UA) collapse du...
Doctors help you with trusted information about Apnea in Obstructive Sleep Apnea: Dr. Bender on positional therapy for sleep apnea: According to 2006 american academy of sleep medicine practice parameters, oral appliances are indicated for use in patients with mild or moderate obstructive sleep apnea who prefer them over CPAP and should be completed by a dentist with advanced training in sleep medicine.
Together, patient symptoms, predictive factors, and anatomical characteristics, may be evidence for suggesting the need for further evaluation.. If you suspect you have OSA, please schedule an office visit with your primary care provider to discuss symptoms and get a referral to the Sleep Disorders Center for evaluation. A home sleep test is often ordered first. If your results from that test are inconclusive or if your doctor suspects sleep problems, you might undergo further testing in the overnight sleep lab.. "The vast majority of patients, once treated, feel much better," said Fitzhugh. "Dont keep trying to cope with it.". Knoxville Hospital & Clinics Sleep Disorders Center offers formal sleep studies and evaluation for persons suffering with OSA, narcolepsy, parasomnia, periodic limb movements, or seizures during sleep. The center is accredited by ACHC, a nationally recognized accrediting body for healthcare entities.. Comprehensive sleep evaluation and testing services are provided at ...