View clinical trials related to Apnea.
Filter by:Enuresis (E) or bedwetting is a common pediatric complaint, and recent research has discovered a link with obstructive sleep apnea (OSA). In children, OSA is often secondary to enlargement of their adenoids or tonsils, and is often successfully treated with a steroid solution given through the nose. The relationship between SDB and E is incompletely understood. Airway obstruction affects the quality of sleep, as the child will wake as the oxygen levels drop. Abnormal sleep also can decrease the secretion of hormones that affects the kidney's ability to concentrate urine at night, which can result in too much urine in the bladder. Contemporary evidence also suggests that patients with enuresis have abnormal sleep phases, which may impair the communications and inhibition of the bladder. In previous studies, the investigators have demonstrated that children with E have a high likelihood of having concomitant SDB. The investigators have also demonstrated that children with E and symptoms of SDB do not respond to typical management for bedwetting. Therefore, the investigators propose to treat patients presenting with E with our standard treatments for E (bed alarm) and first line therapy for SDB: Intranasal steroids. This medication helps to decrease the inflammation of the adenoids and tonsils, thereby reducing the airway obstruction. the investigators hypothesize that children with significant symptoms of SDB will improve with the addition of INS, and the investigators hope to see an improvement in their bedwetting, quality of life, and sleep quality as well. To test this, patents with E will be recruited from the pediatric urology clinic. They will be offered the standard treatment for E, the bed alarm, and the treatment group will be given an intranasal steroid spray. The investigators will then reassess the patients 3 months after treatment, and compare the two groups.
The purpose of this study is to investigate the effect of decreasing fluid overload by hemodialysis on the severity of obstructive sleep apnea, in patients with end stage chronic kidney disease on intermittent hemodialysis. It aims further to investigate the relationship between overhydration, nocturnal rostral fluid shift and the severity of sleep apnea.
The primary objective of this study is to build a well characterized cohort of patients that will be used to determine the genetic variants associated with obstructive sleep apnea (OSA)and its co-morbidities.
The association of obstructive sleep apnea (OSA) and cardiac diastolic dysfunction have been reported, and improvement of diastolic function after continuous positive airway pressure (CPAP) in OSA patients was observed. However, more detailed analysis of diastolic function by supine bicycle exercise echocardiography is lacking. The investigators hypothesized that 3 months of CPAP therapy in OSA patients will significantly improve diastolic functional parameters measured by exercise stress echocardiography. Patients with severe OSA (Apnea-hypopnea index > 30) will be included in this study, and randomized to CPAP versus sham-CPAP group by 1:1 ratio. Supine bicycle exercise echocardiography, pulse wave velocity, 24 hours ambulatory blood pressure (BP), central BP will be checked before and after CPAP therapy and parameters will be compared.
The purpose of this study is to determine the prevalence of obstructive sleep apnea and associate it with the endothelial function behavior in patients with resistant hypertension. Two groups will be evaluate, one presenting uncontrolled high blood pressure, and other, with controlled blood pressure by drugs.
With the advent of electricity, light at night has become a ubiquitous part of our society. The main purpose of this study is to determine whether sleeping with dim light (40 lux), the brightness of a night light) in your bedroom for 5 consecutive nights will result in increased markers of inflammation in the blood compared to sleeping in darkness during the night in patients with obstructive sleep apnea (OSA). A secondary aim is to examine the effects on insulin sensitivity, other blood proteins, and RNA molecules as a result of sleeping with dim light. RNA molecules are substances in blood that dictate what type of proteins the body should make.
The purpose of this study is to determine whether obstructive sleep apnea affects sleep dependent memory and learning. Subjects with apnea will be given a test of perceptual skill learning (the Visual Discrimination Task (VDT)) that has previously been shown to depend on sleep. Subjects will be tested on this task before and after sleep. The difference in performance after sleep compared to before sleep provides a measure of sleep dependent learning. Participants will be tested on one night when they have less apnea because they are using continuous positive airway pressure (CPAP) as prescribed by their physician, which is well known to reduce apnea; and on another night when they are in their native state and have a greater degree of apnea. Memory performance will be compared between the two nights to determine how apnea affects sleep dependent memory.
Purpose: The purpose of this study is to develop a novel pathway to decrease the cost and waiting time to manage bariatric surgical patients with obstructive sleep apnea. Hypotheses: Compared to the current perioperative pathway, the proposed novel pathway incorporating overnight oximetry and perioperative sleep apnea precautions is safe and more cost effective for evaluating and managing obstructive sleep apnea in the bariatric surgical patients. To decrease the cost and waiting time, we proposed a novel perioperative pathway to manage obstructive sleep apnea in the bariatric patients. In this pathway, the patient will be screened by the STOP-Bang questionnaire. The recruited patients will be randomized into two groups: The STOP-Bang questionnaire score is ≥4 then you will be assigned to any one of these groups - sleep study group (group 1) or - oximetry group (group 2).
The purpose of this study is to identify the mechanism(s) by which OSA exacerbates the age-linked decline in systemic testosterone concentrations by conducting a randomized order sham-controlled crossover study that dynamically evaluates the entire hypothalamic-pituitary testicular axis across a wide age range.
The purpose of this research study is to determine if auto-adjustable positive airway pressure (APAP) is an effective way to treat obstructive sleep apnea (OSA) in children. APAP is a device similar to continuous positive airway pressure (CPAP) that delivers pressure to the upper airway (nose and throat) to keep the airway from collapsing while during sleep. The difference is that APAP adjusts the pressure throughout the night with changes in resistance during breathing, and CPAP gives the same amount of pressure the whole time it is worn. APAP is currently widely used to treat adults with OSA, however, this device has not yet been extensively studied in children. There are two parts to this research study. Subjects will begin using APAP at the time of enrollment for 4 to 8 weeks. The investigators will compare the pressure measured by the APAP device over the 4-8 weeks with the pressure determined by a CPAP titration study. The titration study is a second overnight sleep study that is routinely ordered when a child with sleep apnea starts treatment with CPAP. It tells the doctor what CPAP setting should be used. In the second part of this study The investigators will compare the effects of APAP with CPAP to see what is reported as more comfortable and is used during more hours of sleep. This part of the study will last about 8 weeks and each subject will use both CPAP and APAP for 4 weeks each. Currently when someone is diagnosed with OSA there is a delay in starting treatment with CPAP until the results of the titration study are available. In this research, patients could be allowed to immediately start treatment with APAP. If APAP is found to be as safe and effective as regular CPAP, treatment with APAP could be used as an alternative to CPAP.