[Exploration of sleep-disordered breathing]

ABSTRACT

Sleep-disordered breathing become more frequent mostly affecting adult male subjects and overweight. We distinguish in this context apneic and non apneic sleep-disordered breathing whose leaders are respectively sleep apnea syndrome and obesity-hypoventilation syndrome. The diagnosis of these disorders is obligatory based on explorations achievable only in sheep laboratory. In these explorations, it is important to distinguish two types of investigations. The ventilatory polygraphy simple investigation, but limited to the registration of different ventilation parameters of severe sleep apnea syndrome with an apnea-hyponea index >30/ h. Polysomnography, besides the respiratory signals recorded previously, it collects other signals that can recognize the succession of different stages of sleep [hypnogram]. It remains the gold standard of sleep-related breathing disorders. Through this update we will discuss the technical side of these two investigations and also their relevance