Novel device quantifies the efficacy of oral appliance therapy for snoring and sleep apnea
New research that will be presented Saturday, June 11, at the 20th Anniversary Meeting of the American Academy of Dental Sleep Medicine (AADSM) in Minneapolis, Minn., quantified the efficacy of mandibular advancement splints (MAS) using a self-administered, at-home device to monitor snoring and sleep-disordered breathing.
Clinical assessment of MAS efficacy in the treatment of snoring and obstructive sleep apnea (OSA) is based predominantly on subjective reports by the patient and partner, and less commonly, on the apnea hypopnea index (AHI), which is the average number of pauses in breathing that occur per hour of sleep. The current study used the Sonomat, a portable, unobtrusive device that has sensors contained within a mattress overlay. These sensors measure AHI by detecting and recording snoring, breathing and body movements.
Results show that MAS treatment reduced the average AHI from 10.3 events per hour to 3.8 events per hour. The respiratory event movement index (RMI), which records more types of events than AHI, was reduced from 15.9 events per hour to 7.6 events per hour.
There was also a decrease in the percentage of patients who snored from 38 percent without the MAS to 15 percent with the MAS. Snoring decreased overall, but 12 of the 42 subjects still snored for greater than 25 percent of the night, with several having substantial increases in snoring.
"The primary findings in our study were that MAS devices were effective in the treatment of OSA by reducing AHI in moderate and severe OSA patients," said principal investigator and lead author Joachim Ngiam, BDS. "Overall, significant reductions in snoring were found to occur with MAS therapy with greater changes seen in OSA patients."
The study involved data from 42 men and women over two consecutive nights. The subjects slept the first night without the MAS and the second night with the MAS advanced to 70 percent of maximum jaw protrusion.
The researchers also found what appeared to be a devolutionary effect with MAS treatment in attenuating or reversing the progression of a snorer's disease to OSA, as a substantial number of patients transitioned to lower AHI and snoring categories.
Despite favorable reductions in AHI with MAS treatment, snoring may persist and patients may question treatment success, indicating a need for quantification of therapy efficacy.
"Although significant reductions in AHI and snoring were observed, residual snoring may persist or even increase in some patients," said Ngiam. "A significant proportion of patients, 29 percent, still snored greater than 25 percent of total sleep time, with several having substantial increases despite MAS therapy."
Provided by American Academy of Sleep Medicine
- Tongue measurements may help dentists determine oral appliance therapy success for sleep apnea Jun 05, 2010 | not rated yet | 0
- Study shows heavy snoring is an independent risk factor for carotid atherosclerosis Sep 01, 2008 | not rated yet | 0
- Nasendoscopy proves useful in predicting treatment success in sleep apnea patients Jun 05, 2010 | not rated yet | 0
- Primary snoring in children impacts cardiovascular functioning Jun 11, 2008 | not rated yet | 0
- Waist size and body mass index are risk factors for sleep disordered breathing in children Jun 01, 2009 | not rated yet | 0
- Motion perception revisited: High Phi effect challenges established motion perception assumptions Apr 23, 2013 | 3 / 5 (2) | 2
- Anything you can do I can do better: Neuromolecular foundations of the superiority illusion (Update) Apr 02, 2013 | 4.5 / 5 (11) | 5
- The visual system as economist: Neural resource allocation in visual adaptation Mar 30, 2013 | 5 / 5 (2) | 9
- Separate lives: Neuronal and organismal lifespans decoupled Mar 27, 2013 | 4.9 / 5 (8) | 0
- Sizing things up: The evolutionary neurobiology of scale invariance Feb 28, 2013 | 4.8 / 5 (10) | 14
Change in momentum when a body is thrown up and falls back down.
7 hours ago Say, a body of mass 'm' is thrown at a certain angle with the vertical with certain initial velocity 'u'. The initial momentum of this object is mu....
change in speed and wavelength of light while travelling from one med
7 hours ago what is the mechanism by which light changes its speed and wavelength while travelling from one medium to other. I know it is c/n or lamda/n and know...
Calculus of Variation - Classical Mechanics
10 hours ago I'm reading Classical Mechanics (Taylor), and the 6th chapter is a basic introduction to calculus of variations. I'm super confused :confused: ...
Frictional Force Equation Doesn't Make Sense
10 hours ago Frictional Force is mathematically defined as: Ff = μ*m*g*cos(θ) , where μ is the coefficient of friction, m is the mass of the object, g is...
Calculating Steam Pressure in Closed Container
15 hours ago I am trying to calculate the volume of liquid water i need to place in a sealed container in order to obtain 10 psi of steam pressure in that closed...
Learning curve of Electromagnetism?
21 hours ago I'm taking a first year physics course and have been having a little trouble with the basics of newtons laws and forces and whatnot, though nothing...
- More from Physics Forums - Classical Physics
More news stories
We're told to have power naps to keep us safe on the road and improve our alertness if we've had insufficient sleep. They even help our surgeons stay awake during long shifts. But siestas and nana naps can ...
Sleep apnea May 17, 2013 | 5 / 5 (3) | 1
(HealthDay)—The widening American waistline may be feeding an epidemic of sleep apnea, potentially robbing millions of people of a good night's rest, a new study suggests.
Sleep apnea May 10, 2013 | not rated yet | 0
A new study suggests that regularity of bedtime prior to initiation of continuous positive airway pressure (CPAP) therapy is an important factor that may influence treatment compliance in adults with obstructive sleep apnea ...
Sleep apnea May 07, 2013 | 5 / 5 (1) | 0
A new study suggests that obstructive sleep apnea severity is higher in African-American men in certain age ranges, even after controlling for body mass index (BMI).
Sleep apnea Apr 12, 2013 | 5 / 5 (2) | 0
People with sleep apnoea are more likely to fail a driving simulator test and report nodding whilst driving, according to new research.
Sleep apnea Apr 11, 2013 | not rated yet | 0
The devastating effect of Alzheimer's disease on bilingual people has been thrown into focus in Canada, where the sudden loss of a second language can leave sufferers feeling like strangers in their own country.
37 minutes ago | not rated yet | 0
The hunt for an HIV vaccine has gobbled up $8 billion in the past decade, and the failure of the most recent efficacy trial has delivered yet another setback to 26 years of efforts.
2 hours ago | not rated yet | 0
Regular consumption of coffee is associated with a reduced risk of primary sclerosing cholangitis (PSC), an autoimmune liver disease, Mayo Clinic research shows. The findings were being presented at the Digestive Disease ...
10 hours ago | not rated yet | 0 |
Patients with treatment-resistant major depression saw dramatic improvement in their illness after treatment with ketamine, an anesthetic, according to the largest ketamine clinical trial to-date led by researchers from the ...
10 hours ago | 4.7 / 5 (3) | 0 |
Research presented at Digestive Disease Week (DDW) explores new methods for managing digestive health through diet and lifestyle.
9 hours ago | not rated yet | 1
The use of a smartphone application significantly improves patients' preparation for a colonoscopy, according to new research presented today at Digestive Disease Week (DDW). The preparation process, which begins days in ...
9 hours ago | not rated yet | 0