Sleep Disordered Breathing Flashcards
Apnea is defined as
Decrease in thermal sensor amplitude by > 90% for > 10 seconds
Define which patients need OSA treatment
1) Mild OSA who are symptomatic or have comorbidities
2) Mod to severe OSA regardless of symptoms or comorbid conditions
Define CPAP compliance
> 4 hours use on at least 70% observed nights
Best historic predictor of OSA
Witnessed apneas
In-lab PSG needed for patients with the following conditions (list 4)
Stroke
CV Disease
COPD
Hypoventilation syndromes
Goal of CPAP therapy
1) attempt AHI < 5
2) At least 50% reduction in original AHI
Which patents are candidates for oral devices
Snoring and mild-mod OSA intolerant of CPAP
Which surgery is successful in resolving OSA
Maxillomandibular advancement
Define pathophysiology of Cheynes-Stokes Respirations
1) increased chemoreceptor sensitivity to CO2
2) increased ventilatory drive
3) Increased circulation time d/t low CO
4) decreased O2 reserve
What stages of sleep does nonhypercapnic central sleep apnea typically occur in?
N1 and N2
Treatments for Cheynes-Stoke Respirations (list 2)
1) Treat underlying heart failure
2) Adaptive servo-ventilation
Complex sleep apnea is defined as
Emergence of CSA with treatment of OSA
Treatment of complex sleep apnea includes
1) Continued CPAP treatment of OSA
2) Reducing PAP may resolve complex events
High altitude periodic breathing is treated with
1) oxygen
2) Diamox
Hypercapnic central sleep apnea is usually a result of which drug class
Opiates
