ABSTRACT
Introduction: Patients with the upper airway resistance syndrome are frequently overlooked, and even if clinically suspected, often escape identification by polysomnographic monitoring.
Clinical Picture: Three cases (2 women and a man) with excessive daytime sleepiness and fatigue were confirmed to have the upper airway resistance syndrome after undergoing polysomnography with oesophageal pressure monitoring. Treatment: Nasal CPAP during sleep was prescribed for 2 cases but 1 case refused all available treatment options. Outcome: After one month of CPAP therapy, the 2 cases reported improved symptoms and Epworth sleepiness scores. Lower daytime blood pressures were also recorded. Conclusions: Oesophageal pressure monitoring and EEG arousal analysis can greatly enhance the diagnostic accuracy in the upper airway resistance syndrome. Accurate diagnosis and effective treatment of this condition is important because of its sequelae of hypersomnolence and association with other disorders like systemic hypertension.Sleep-related breathing disorders are widely recognised as important causes of morbidity and mortality over the past 3 decades. The obstructive sleep apnoea syndrome (OSAS) and the sleep hypopnoea syndrome are well-known and well-described breathing disorders during sleep.
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