Obstructive Sleep Apnea - PowerPoint PPT Presentation

About This Presentation

Obstructive Sleep Apnea


Cal Knowles Obstructive Sleep Apnea (OSA) is a sleeping disorder that causes a person to stop breathing for a span of seconds In OSA, the airway narrows as the ... – PowerPoint PPT presentation

Number of Views:174
Avg rating:3.0/5.0
Slides: 13
Provided by: eleUriEd
Learn more at: https://www.ele.uri.edu


Transcript and Presenter's Notes

Title: Obstructive Sleep Apnea

Obstructive Sleep Apnea
  • Cal Knowles

What is Obstructive Sleep Apnea?
  • Obstructive Sleep Apnea (OSA) is a sleeping
    disorder that causes a person to stop breathing
    for a span of seconds
  • In OSA, the airway narrows as the muscles relax
    during sleep, reducing the amount of oxygen in
    the blood
  • Sleep apnea can lead to more severe health
    problems like cardiovascular disease, high blood
    pressure, diabetes, and/or a stroke

Information on OSA
  • It is believed that 1 in 15 Americans (roughly 20
    million) have sleep apnea
  • It is also believed that 80-90 percent of these
    people are unaware that they have it
  • Symptoms are loud snoring, restless sleep, and
    sleepiness during the day
  • Its more common in older people and those who
    are obese and/or active smokers

Continuous positive airway pressure treatment
  • The CPAP is a machine that is a common treatment
    for those experiencing OSA
  • The CPAP is composed of a flow generator, a hose,
    and an interface
  • The flow generator provides airflow, the
    interface is a mask placed on the persons face,
    and the hose connects the two

Pictures of a CPAP
How the CPAP treatment works
  • The user is provided with a constant stream of
    compressed air
  • The pressure from the air keeps the airway open
    lessening/preventing the number of sleep apnea
  • It is the pressure, not the actual airflow that
    forces the airway to stay open
  • The air pressure is measured in cm per water, and
    most patients use a range from 6 to 14 cm per

Disadvantages to the CPAP
  • Many are reluctant to try this method at first
    due to the inconvenience of the mask, hose, and
  • The air pressure also causes some patients to
    experience nasal congestion or a runny nose, and
    it may take a few weeks to adjust to the machine
  • The disadvantages are mainly because of comfort
    reasons, and there are really no serious side

Other methods of treatment
  • About half of those diagnosed with OSA decide to
    use the CPAP machine
  • One alternative is nasal surgery however, this
    method has a very low success rate (under 10
    percent) and is usually performed so the patient
    can be fitted with a more convenient nasal mask
    for the CPAP
  • Nasal ventilation has very little impact on sleep
    apnea, and that is why it yields such low success

Minimally invasive surgery for alternative
  • Radiofrequency surgery uses high frequency
    electrical currents and is applied to the soft
    palate, the tongue, and or/the tonsils
  • All 6 of the subjects for this method saw an
    improved score on their Epworth sleepiness scale
    from pre surgery to post surgery
  • Soft palate implants is another method, where
    cylinders of polyester yarn are inserted into the
    soft palate
  • All 7 of these subjects had an improved score on
    the Epworth sleepiness scale

Invasive surgery methods for alternative treatment
  • The invasive surgery methods include pharyngeal
    procedures (80 percent experienced improvement),
    tongue base procedures (33), supraglottic
    procedures (85), multi-level surgery (51.5),
    maxillofacial surgery (90), tracheostomy (96)

  • The findings were that the CPAP is the most
    effective method due to its non-invasiveness and
    lack of side effects
  • The minimally-invasive techniques as well as the
    maxillofacial surgery were the next best methods
    due to the efficiency of success compared to the
    minimal amount of invasiveness
  • The tongue based surgery, as well as the
    tracheotomy were both given the lowest rating for
    effectiveness due to the low success rates for
    the tongue based surgery, and the highly invasive
    manner and rare necessity for the tracheotomy

  • Maurer, Joachim. "Update on surgical treatment
    for sleep apnoea" Swiss Medical Weekly 132
    (2009) 624-629
  • http//www.sleepapnea.org/
  • http//www.nhlbi.nih.gov/health/dci/Diseases/Sleep
  • http//www.medicinenet.com/sleep_apnea/article.htm
Write a Comment
User Comments (0)
About PowerShow.com