Obstructive Sleep Apnoea Flashcards Preview

*Medicine: Respiratory > Obstructive Sleep Apnoea > Flashcards

Flashcards in Obstructive Sleep Apnoea Deck (5)
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What are presdisposing factors to obstructive sleep apnoea?

  • Obesity
  • Macroglossia (acromegaly, hypothyroid, amyloidosis)
  • Large tonsils
  • Marfan's syndrome


The partner often complains of excessive snoring and may report periods of apnoea.

What are consequential features experienced from OSA?

  • Daytime somnolence
  • Compensated respiratory alkalosis
  • Hypertension


How can sleepiness be assessed?

  • Epworth Sleepiness Scale → completed by pt +/- partner
  • Multiple Sleep Latency TEst (MSLT) → measures time to fall asleep in dark room (using EEG criteria)


What are diagnostic tests for OSA?

  • Sleep studies (polysomnography)
  • Ranges from monitoring of pulse oximetry at night to full polysomnography where a wide variety of physiological factors are measured including EEG, respiratory airflow, thoraco-abdominal movement, snoring + pulse oximetry


What are the management options for OSA?

  • Weight loss
  • Mod-severe OSA → CPAP
  • CPAP intolerable / mild OSA → intra-oral devices
  • Excessive daytime sleepiness → DVLA informed