7A42
Sleep-related hypoventilation or hypoxemia disorders
Transtornos de hipóxia ou hipoventilação relacionados ao sono
CategoryDefinition
The primary feature of these disorders is insufficient sleep related ventilation, resulting in abnormally elevated arterial partial pressure of carbon dioxide (PaCO2) during sleep. Sleep-related hypoxemia is diagnosed when overnight monitoring reveals sustained (> 5 minutes) decline in oxygen saturation to ≤ 88% in adults (or ≤ 90% in children) for ≥ 5 minutes. Note: A definitive diagnosis requires objective evidence based on polysomnography as well as carbon dioxide (CO2) monitoring during sleep (by arterial, end-tidal or transcutaneous measures).
Subcategories (7)
7A42.0Obesity hypoventilation syndrome7A42.1Congenital central alveolar sleep-related hypoventilation7A42.2Non-congenital central hypoventilation with hypothalamic abnormalities7A42.3Idiopathic central alveolar hypoventilation7A42.4Sleep-related hypoventilation due to a medication or substance7A42.5Sleep-related hypoventilation due to medical condition7A42.6Sleep-related hypoxemia due to a medical condition