Clinical Research Directory

Long-term Effects of Lipoabdominoplasty on Pulmonary Function and Sleep Apnea Risk in Obese Subjects

This study investigates the long-term effects of lipoabdominoplasty on pulmonary function and obstructive sleep apnea (OSA) risk in obese patients. Participants were evaluated before and three months after surgery using spirometry, mMRC dyspnea scores, Epworth Sleepiness Scale (ESS), and STOP-Bang questionnaires.

Wearable Voice-Guided BBTi for Comorbid Insomnia and Sleep Apnea (COMISA)

This study investigates the efficacy of a wearable voice-guided Brief Behavioral Therapy for Insomnia (BBTi) combined with a smart eye-mask device for individuals with Comorbid Insomnia and Sleep Apnea (COMISA). The four-year study comprises three phases: (1) exploration of cognitive-emotion regulation-arousal system mechanisms in COMISA and pilot BBTi intervention testing, (2) development and usability testing of an integrated smart eye-mask with BBTi voice-guided modules, and (3) a multi-center randomized controlled trial (RCT) evaluating the combined BBTi plus smart eye-mask intervention versus BBTi alone, smart eye-mask alone, and standard sleep hygiene education in 160 COMISA participants. Primary outcomes include insomnia severity (ISI), daytime sleepiness (ESS), and CPAP adherence. The study aims to establish an evidence-based digital health intervention for improving sleep outcomes in COMISA patients.

Follow-up of Apneic Patients by Visio-consultation

Prospective multicenter open-label randomized clinical trial comparing videoconsultation to a face-to-face consultation during the follow-up of apneic patients treated by continuous positive pressure (CPAP) .

DISE: Phenotyping Obstruction Patterns

Drug-induced sleep endoscopy (DISE) represents an opportunity to evaluate the upper airway in sleep-like conditions. In its current clinical form, however, DISE does not routinely determine the functional impact of anatomic and neuromuscular factors on airflow obstruction. The investigators will apply nasal pressure (CPAP) during DISE to generate pressure-flow relationships, deriving functional determinants of upper airway obstruction during sleep. In addition, they will use objective anatomic measurements from computerized tomography (CT) and submental ultrasound. The findings will allow the investigators to streamline the upper airway exam during DISE, and will further the goal of developing personalized solutions that address specific pathogenic mechanisms of pharyngeal collapse and airflow obstruction during sleep. The investigators will use the physiologic and anatomic features derived from DISE and imaging to determine which are predictive of success to standard-of-care surgical interventions (e.g. skeletal, soft tissue, neurostimulation) .

OSA PAP Treatment for Veterans With SUD and PTSD on Residential Treatment Unit

Substance use disorder (SUD) and posttraumatic stress disorder (PTSD) frequently co-occur and having both disorders is associated with greater psychological and functional impairment than having either disorder alone. This is especially true in residential settings where both disorders are more severe than outpatient settings. Obstructive sleep apnea (OSA) is highly comorbid with both disorders and untreated OSA is associated with worse functional impairment across multiple domains, worse quality of life, worse PTSD, higher suicidal ideation, and higher substance use and relapse rates. Treating OSA with evidence-based positive airway pressure (PAP) in Veterans with SUD/PTSD on a residential unit is a logical way to maximize treatment adherence and treatment outcomes. This study compares OSA treatment while on a SUD/PTSD residential unit to a waitlist control group. The investigators hypothesize that treating OSA on the residential unit, compared to the waitlist control, will have better functional, SUD, and PTSD outcomes.

Computer Models of Airways in Children and Young Adults With Sleep Apnea and Down Syndrome

The purpose of this research study is to develop a way of predicting with computers how surgery on the airway will affect night time breathing called Obstructive Sleep Apnea (OSA) in children with Down Syndrome. A research measurement for airway resistance will also be done during the clinical sleep MRI. The airway resistance measurement will take about 10 minutes and is done during sleep. The airway resistance measurement is called critical closing pressure (Pcrit).

Effects of a Pacifier on Obstructive Sleep Apnea and Its Repercussions in Infants With Down Syndrome

Obstructive Sleep Apnea (OSA) is characterised by repetitive collapse of the upper airway during sleep, inducing breathing disturbances that can result in oxygen desaturation and frequent arousals. In children, OSA can have long-term consequences on the development and on the cardiovascular system. Down Syndrome (DS) is a genetic disorder associated with intellectual disability and many comorbidities. The prevalence of OSA is particularly high in patients with DS, from infancy. In a recent study, OSA was diagnosed in 97% infants and early diagnosis and intervention from the age of 6 months was associated with better neurocognitive outcome at 3 years old. Therefore, there is a need to develop new strategies to prevent OSA early in infancy. OSA can be linked to some orofacial abnormalities presented by patients with DS. Indeed, orofacial functions and structures ca play a crucial role in OSA. For example, nose breathing allows the tongue to act as a stimulator of the transverse maxillary growth during childhood, allowing the upper airway to develop properly. The primary objective of the present study is to evaluate the effects of a pacifier used by infants with Down Syndrome (from the age of 1 months) on the severity of OSA at the age of 6 months, by comparing a group of infants with the pacifier vs a group of infants without the pacifier. The main hypothesis is that infants who used the pacifier from 1 month- to 6 month-old will have lower OSA severity (estimated by the obstructive apnea hypopnea index on polysomnography (PSG)).

Post-Operative Steroids After Sleep Surgery

The primary objective of this randomized, placebo-controlled, double-blind study will be to determine if postoperative steroids significantly improve subjects' pain compared to a placebo after undergoing sleep surgery. The secondary objective is to determine if this same course of steroids improves how quickly subjects can tolerate a regular diet after surgery. Further, another secondary objective is to see if this will decrease a patient's postoperative narcotic usage. Investigators also will assess sleepiness, nasal breathing, and eustachian tube dysfunction (ETD) after the procedure using the validated measures Preoperative Epworth Sleepiness Scale (ESS), Nasal Obstruction Symptom Evaluation Survey (NOSE), and Eustachian Tube Dysfunction Questionnaire (ETDQ-7) with an objective to see if these improve more or quicker in patients who receive postoperative steroids. Investigators hypothesize that postoperative steroids will significantly decrease a patient's pain quicker in their recovery, allow them to tolerate more oral intake early in their recovery, allow them to tolerate a regular diet earlier in their recovery, and reduce their postoperative narcotic usage. Investigators hypothesize that postoperative steroids will also improve patients' ESS, NOSE, and ETD scores postoperatively, but Investigators do not believe postoperative steroids will affect the oropharyngeal bleeding rate of patients. This study will provide pilot data to determine if postoperative steroids and what dosage should be part of a standardized postoperative regimen in patients undergoing sleep surgery.

Maridebart Cafraglutide Versus Placebo in Adult Participants With Obstructive Sleep Apnea on Positive Airway Pressure Therapy

This Phase 3 clinical trial is designed to evaluate the efficacy and safety of maridebart cafraglutide compared to placebo over a 52-week period in adults with obstructive sleep apnea (OSA) who are receiving positive airway pressure (PAP) therapy and are living with overweight or obesity.

TipTraQ Home Sleep Test Validation Study, VGH

A validation study has been designed to assess the performance of a home sleep test device, TipTraQ, for screening sleep apnea. The study involves participants wearing the TipTraQ device on their fingertip during a traditional sleep test, known as polysomnography (PSG), conducted in a sleep center. The performance of the device will then be evaluated by comparing the results from the TipTraQ system with those from the traditional sleep test.

SUNOSI® (Solriamfetol) Pregnancy Registry

The SUNOSI (solriamfetol) Pregnancy Registry is a US- and Canada-based prospective, observational study to evaluate the safety of solriamfetol exposure during pregnancy in women with a diagnosis of narcolepsy or obstructive sleep apnea (OSA).

Start CPAP Therapy in Obstructive Sleep Apnea Patients After Atrial Fibrillation Ablation

Atrial fibrillation (AF) is one of the most common clinical arrhythmias. Catheter ablation is an effective therapeutic strategy; however, recurrence rates remain substantial, ranging from 20% to 45%. Previous studies have established a strong association between obstructive sleep apnea (OSA) and the risk of AF recurrence following ablation. While continuous positive airway pressure (CPAP) is the standard intervention for OSA, and some observational studies suggest it may reduce post-ablation recurrence in patients with comorbid OSA, small randomized controlled trials have failed to confirm a clear benefit, potentially due to poor adherence. This study aims to evaluate the clinical benefit of post-ablation CPAP therapy in AF patients with comorbid OSA. Participants will: * Be randomly assigned to either the CPAP group or the usual care group. * If in the CPAP group, use a CPAP device for 12 months. * Wear an ambulatory ECG recorder for a 7-day period at 3, 6, 9, and 12 months after randomization. * Complete follow-up checkups either at the clinic or over the phone at 1, 3, 6, and 12 months after randomization.

Pediatric/Adolescent WatchPAT 400 Reliability Pilot Study

The goal of this clinical trial is to learn whether a newer sleep-testing device gives results that closely match the standard overnight sleep study, in children and adolescents ages 6-18 who are being evaluated for possible sleep apnea. The main questions it aims to answer are: Does the new device (WatchPAT 400) give breathing and oxygen level results that agree with the standard overnight sleep study (polysomnography)? How reliably can two doctors, each looking at only one test's results, arrive at similar conclusions about a child's sleep apnea? Participants will: Have their regular, already-scheduled overnight sleep study performed exactly as usual Wear the WatchPAT 400 device (a small sensor on one finger, a wrist unit, and one adhesive patch on the chest) at the same time, during that same night Have both sets of results reviewed separately by two different study doctors Researchers will compare the results from the WatchPAT 400 device to the results from the standard sleep study to see how closely they agree, and how well the new device performs at detecting sleep apnea in children and teenagers.

Design and Usability Testing of a Tailored Intervention About Sleep and Sleep Disorders Among Transportation Workers

The objective of this protocol is to conduct a focus group to identify OSA beliefs, attitudes, and knowledge among employees in the transportation industry on shift schedules.

Disrupted Sleep and Concurrent Ectopy or Atrial Fibrillation

Whereas the available evidence mostly supports chronic sleep disruption as a risk factor for incident AF, less is known about the near-term risk of a discrete atrial fibrillation (AF) episode following a night of disrupted or poor-quality sleep. This prospective, randomized, case-crossover study aims to examine the acute effects of sleep disruption on clinically relevant cardiac ectopy pertinent to AF.

Down Syndrome Obstructive Sleep Apnea

The purpose of this study is to assess whether oxygen supplementation during sleep improves working memory and other clinical and patient-reported outcomes among children who have Down Syndrome (DS) with moderate to severe Obstructive Sleep Apnea (OSA).

Acoustic OSA Prediction During Wakefulness and Monitoring During Sleep

The purpose of this study is to investigate the feasibility of sound analysis for: a) sleep apnea detection both during wakefulness and sleep, and b) flow-sound relationship during both wakefulness and sleep in patients and control individuals. The ultimate goal of our research is to simplify the current assessments for sleep apnea detection so that it is more convenient for patients and also much faster than the current techniques.

Head to Head Comparison of Upper Airway Stimulation and Continuous Positive Airway Pressure; a Pilot Study.

To date, there has been no head to head comparison of Upper Airway Stimulation (UAS) and Continuous Positive Airway Pressure (CPAP) utilizing a full night polysomnographic evaluation. With this study we aim to evaluate a pilot cohort of patients with OSA treated with CPAP or UAS using the WatchPAT polysomnography system.

Maridebart Cafraglutide Versus Placebo in Adult Participants With Obstructive Sleep Apnea Not on Positive Airway Pressure (PAP) Therapy

This Phase 3 clinical trial is designed to evaluate the efficacy and safety of maridebart cafraglutide compared to placebo over a 52-week period in adults with obstructive sleep apnea (OSA) who are not on PAP therapy and are living with overweight or obesity.

Obstructive Sleep Apnea Among Somali-Americans

The investigators seek to advance the understanding of obstructive sleep apnea as it relates to different ethnic origins as well as sex differences. The investigators will compare Somali patients with known obstructive sleep apnea (OSA) to individuals without OSA, and to individuals of other ethnic/racial origins to determine the risk factors (genetic and/or physiologic) associated with developing cardiovascular diseases. This will help the investigators to understand the unique sleep pathology of individuals of African descent.

Strengthening Inspiratory and Oropharyngeal Muscles in Moderate Obstructive Sleep Apnea Hypopnea Syndrome

The Obstructive Sleep Apnea hypopnea Syndrome (OSAS), whose prevalence is 4% of the French population, can lead to serious health consequences (risk of road accidents, onset of cardiovascular disease, etc.). OSAS corresponds to a certain number of interruptions (apneas) or reductions (hypopneas) of ventilation during sleep. The weakening of the tone of the inspiratory and oropharyngeal muscles is one of the main causes of upper airways obstruction during the inspiratory phase.

Metabolic Impact of Intermittent CPAP

Obstructive sleep apnea is a risk factor for diabetes and cardiovascular disease, by unknown mechanisms. The investigators hypothesize that sleep apnea changes glucose and lipid metabolism during sleep, which over time could lead to diabetes and cardiovascular disease. This study examines metabolic changes during sleep in patients with obstructive sleep apnea. Patients accustomed to continuous positive airway pressure (CPAP) therapy are enrolled to undergo sleep studies, either on CPAP therapy or after withdrawing from CPAP for 3 nights. During sleep, blood samples are obtained so that metabolic function can be compared between sleep apnea and CPAP nights.

The Impact of Exercise on Irisin-BDNF Regulation in Obstructive Sleep Apnea

The goal of this clinical trial is to learn whether aerobic exercise can improve sleep and nervous system regulation in adults with mild to moderate obstructive sleep apnea (OSA). The study will also examine whether exercise changes blood markers related to inflammation and brain health. The main questions this study aims to answer are: 1. Does four weeks of aerobic exercise change blood levels of irisin, brain-derived neurotrophic factor (BDNF), and markers related to inflammation? 2. Does aerobic exercise improve sleep apnea, heart rate variability, cognitive function, daytime sleepiness, sleep quality, and daily functioning? Researchers will compare an aerobic exercise group with a sleep education group to determine whether adding regular aerobic exercise provides additional benefits for people with mild to moderate OSA. Participants will be randomly assigned to one of two groups. Participants in the aerobic exercise group will: 1. Receive sleep education. 2. Complete four weeks of supervised treadmill exercise, three to five times per week. Each session will last about 45 to 60 minutes. Exercise intensity will be adjusted to each participant's heart rate and physical condition. Participants in the comparison group will: 1. Receive sleep education about OSA, common symptoms, treatment options, and healthy sleep habits. 2. Practice the recommended healthy sleep habits at home during the four-week study period. Participants in both groups will complete assessments before and after the four-week study period. These assessments will include an overnight sleep study, blood tests, heart rate measurements, cognitive tests, and questionnaires about daytime sleepiness, sleep quality, and daily functioning.

DANish Patients With Atrial Fibrillation and Sleep Apnea Prevalence by Night Owl

A project of the feasibility of using NightOwl to detect the prevalence of obstructive sleep apnea (OSA) in patients with atrial fibrillation (AF). The long-term aim is to use the device to screen for OSA in a randomized clinical trial in AF patients undergoing ablation and/or a randomized trial of AF patients undergoing cardioversion.