Disorders of sleep and respiratory control in obesity: perioperative assessment and management
• Obese patients suffer disorders of respiratory control.
• Both obstructive sleep apnoea and the obesity hypoventilation syndrome are under-diagnosed.
• Both syndromes have important implications for the perioperative course.
• The obesity hypoventilation syndrome is characterised by reduced central respiratory drive and an elevated carbon dioxide tension while awake.
• Obstructive sleep apnoea is characterised by nocturnal airway obstruction and desaturation.
• Both syndromes are associated with cardiovascular complications and right heart failure.
• Weight loss is an effective therapeutic strategy for both syndromes.
• CPAP is effective in mitigating the effects of obstructive sleep apnoea.
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