Flashcards in Sleep Related Breathing Disorders Deck (13):
What effects the quality of sleep a person gets?
The number of arousals per night
What is the average sleep cycle length?
repeated 3-6 times per night
REM and Non-REM sleep
What are the different classifications of Sleep disorders?
Sleep disordered breathing
Circadian rhythm disorders
What are the respiration factors that change during Sleep?
Airway resistance increases by 230% during NREM sleep
Tidal volume decreased
Minute ventilation is decreased
What causes Obstructive sleep apnea?
Dynamic upper airway narrowing or closure during sleep
dec muscular tone during sleep
Crowding of upper airway structures
What is the Triad of OSA?
What are the Risk factors for OSA?
Obesity (BMI >35)
Treatment resistant HTN
CHF, atrial fibrillation, stroke
Who should be screened for OSA?
Pt that are dissatisfied with their sleep/have daytime sleepiness
Pts with Risk factors
Pts with high risk driving occupations or daytime sleepiness + MVA
What are the important factors to look at in PE in OSA?
Neck >16 in women, >17 in Men
Enlarged or elongated uvula
What qualifies Polysonography in OSA?
Event if Apnea for >10 sec
(look at the thoracic/abdominal belt)
Apnea = Decrease in AF by >50%
Hypopnea = dec in AF by 30% AND drop in Pulse Ox by 4%
AHI = Apnnia Hypopnea Index (number of apneas and hypopneas per hour of sleep)
What are the specific managements of OSA?
CPAP (Continuous Positive Airway Pressure)
Maxillo mandibular advancement
Tonsilectomy, nasal septostomy
What is CSA(central sleep apnea)?
Recurrent Cessation of Respiration during sleep without associated ventilatory effort