Obstructive sleep apnoea/hypopnoea syndrome

Obstructive sleep apnoea/hypopnoea syndrome (OSAHS) is a condition in which a person experiences repeated episodes of apnoea/hypopnoea because of closing of the pharyngeal airway during sleep (NICE definition) 

  • Excessive daytime sleepiness 
  • Snoring 
  • Morning headaches 
  • Nocturia 
  • Sexual dysfunction 
  • Impaired cognition 

Risk factors for OSA
  • Increasing age
  • Obesity 
  • Male gender 
  • Enlarged tongue or tonsils 

Conditions associated with OSAHS 

  • History 
  • Sleep study 
    • Severity graded on the apnoea/hypnoea index (AHI) 
      • Mild: AHI 5-14 
      • Moderate: AHI 15-30 
      • Severe: AHI >30 

  • Lifestyle changes 
    • Weight loss 
    • Stop smoking 
    • Decrease alcohol 
  • Dental devices to keep upper airway open (mild to moderate OSA only)
  • CPAP 
  • Surgery should only be as part of a clinical trial 

OSAHS increases: 
  • Depression 
  • Hypertension 
  • Increased motor accidents 

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