The Role Of Arousal And Respiratory Control Factors In The Pathogenesis Of Obstructive Sleep Apnoea
Funder
National Health and Medical Research Council
Funding Amount
$567,924.00
Summary
Sleep apnoea (OSA) is a very common breathing disorder in sleep characterized by repetitive closure of the collapsible portion of the throat with serious effects on sleep quality and health. Basic causes of OSA are still largely unknown. We will investigate waking responses to breathing load and related respiratory control factors that we believe may be fundamental causes of OSA, and potentially explain many features of OSA including worsening in light sleep and with increasing age.
A New Clinical Tool To Assess Fitness-to-drive In Obstructive Sleep Apnea
Funder
National Health and Medical Research Council
Funding Amount
$727,963.00
Summary
Obstructive sleep apnoea (OSA) affects 1 in 4 middle aged adults. OSA results in impaired neurobehavioral function, excessive sleepiness, and more than 2-fold increased motor vehicle crash risk and workplace accidents. However, not all patients are impaired and identifying patients at risk is a daily clinical challenge. This project proposes new and simple measures that can accurately identify patients with OSA who are most vulnerable to alertness failure and motor vehicle accident risk.
In Search Of Airways Collapse - A Multimodal Device For The Diagnosis Of Obstructive Sleep Apnoea
Funder
National Health and Medical Research Council
Funding Amount
$479,786.00
Summary
Using a combination of off-the-shelf and emerging technologies we will develop a multimodal diagnostic device that will identify and characterize the points of airway collapse that occur in patients with obstructive sleep apnoea. Using this multimodal approach will allow sleep clinicians to recommend the best form of therapeutic intervention for each individual patient rather than the current strong reliance on positive pressure facemasks.
Clarifying The Pathogenic Role Of Arousal-hyperventilation In Obstructive And Central Sleep Apnoea: Testing Fundamental Pathophysiological Mechanisms And A Strategic New Treatment
Funder
National Health and Medical Research Council
Funding Amount
$414,717.00
Summary
This project is designed to understand the mechanisms underpinning much more stable breathing during deep sleep in obstructive sleep apnoea (OSA). A newly developed analytical technique will be used to examine breathing effort changes across sleep, and interactions with respiratory-induced awakenings in OSA patients. In addition, a new treatment designed to stabilise breathing will be tested and refined towards a new treatment option for OSA and for central sleep apnoea.
Clinical Outcomes, Safety And Incremental Cost Effectiveness Of Multi-level Airway Surgery In Patients With Moderate-severe Obstructive Sleep Apnea (OSA) Who Have Failed Medical Management
Funder
National Health and Medical Research Council
Funding Amount
$652,794.00
Summary
Obstructive sleep apnoea (OSA) is a serious medical disorder with a high public health cost. OSA can be effectively treated but poor treatment compliance is a major clinical problem. As a consequence many OSA patients remain untreated, with significant implications for their long term health. New effective and safe therapies are needed. We believe that we will demonstrate a relatively straightforward, safe and effective surgical procedure for OSA after primary treatments fail. This will lead to ....Obstructive sleep apnoea (OSA) is a serious medical disorder with a high public health cost. OSA can be effectively treated but poor treatment compliance is a major clinical problem. As a consequence many OSA patients remain untreated, with significant implications for their long term health. New effective and safe therapies are needed. We believe that we will demonstrate a relatively straightforward, safe and effective surgical procedure for OSA after primary treatments fail. This will lead to improved patient outcomes.Read moreRead less
Assessment Of Novel Biomarkers That Are Related Neurobehavioural Dysfunction In Patients With Obstructive Sleep Anoea
Funder
National Health and Medical Research Council
Funding Amount
$312,941.00
Summary
Obstructive sleep apnea is recognised as a common condition that has a clearly measurable impact on public health. However it is often difficult for doctors to decide which patients have problems with driving or day to day brain functioning. This study will measure driving and memory during an extended period of waking in patients with sleep apnea. Special markers of brain function will be correlated with performance results during this extended wakefulness challenge.
The Clinical Effectiveness Of A Simple New Treatment For Supine-dependent Obstructive Sleep Apnoea
Funder
National Health and Medical Research Council
Funding Amount
$529,178.00
Summary
Obstructive sleep apnoea is a common and debilitating breathing problem in sleep with serious effects on sleep and health. A third of patients could be very simply treated by avoiding sleeping on their back. Existing treatments are uncomfortable, often not used and better options are needed. This project will test symptom relief and treatment adherence with a new comfortable low cost supine avoidance therapy against current best practice treatment.
Hypoxia-induced Suppression Of Respiratory Sensations And Reflexes
Funder
National Health and Medical Research Council
Funding Amount
$276,750.00
Summary
Many diseases that effect the respiratory system have their primary effect on the lungs and airway themselves but in some conditions, such as obstructive sleep apnea (OSA) and asthma, increased breathing load can induce periods of low blood oxygen which could further contribute to morbidity in these diseases. OSA is a disorder associated with snoring. Patients experience periods of sleep fragmentation and oxygen deprivation due to obstruction of the floppy portion of the upper airway (pharynx) d ....Many diseases that effect the respiratory system have their primary effect on the lungs and airway themselves but in some conditions, such as obstructive sleep apnea (OSA) and asthma, increased breathing load can induce periods of low blood oxygen which could further contribute to morbidity in these diseases. OSA is a disorder associated with snoring. Patients experience periods of sleep fragmentation and oxygen deprivation due to obstruction of the floppy portion of the upper airway (pharynx) during sleep. It affects 4% of men and 2% of women and causes excessive daytime sleepiness leading to increased risk of accidents, high blood pressure and premature cardiovascular disease. Asthma produces airway inflamation and narrowing and affects a wide range of people. Both OSA and asthma are associated with episodes of impaired breathing and reduced levels of oxygen in the blood. Low levels of oxygen in the blood (hypoxia) is well known to impair functioning of the central nervous system. We have recently found that hypoxia blunts sensations of increased breathing load in healthy people and in asthmatics. Hypoxia might therefore contribute to worsening of attacks in these diseases. This study aims to investigate how changes in blood oxygen levels affect brain processing of respiratory signals, how this translates to perception of sensations and the physiological adaptations that people make to cope with increased breathing load. We will also investigate whether the inhibitory effects of hypoxia on central nervous system function extend to other vital protective respiratory reflexes such as cough, awakening from sleep to increased breathing load and upper airway reflexes that are important for maintaining an open airway.Read moreRead less
Health Impacts Of Sleep Apnea In Australian Men- A Longitudinal Population Study.
Funder
National Health and Medical Research Council
Funding Amount
$312,056.00
Summary
Obstructive sleep apnea (OSA) is very common, seen in 60-70% of men over 40 years old. OSA is linked to a number of serious conditions, e.g. heart disease and diabetes. However, we don't know which men are at risk of long term complications from OSA. Our aim is to follow-up men from a community sample of 1000 men who had sleep studies in 2010 to help identify who is at risk of poor health from OSA.
Treating Insomnia Co-morbid With Obstructive Sleep Apnoea: A Randomized Controlled Clinical Effectiveness Trial.
Funder
National Health and Medical Research Council
Funding Amount
$600,869.00
Summary
Obstructive Sleep Apnoea (OSA) is a common but serious sleep disorder. Continuous positive airways pressure (CPAP) therapy can be very effective in treating OSA. We have found that many patients with OSA also suffer from insomnia, and this can make it hard for them to begin CPAP therapy and hard for them to stick to it. This trial will examine the effect of treating insomnia concurrently with CPAP, with the expectation that overall treatment outcomes will improve.