Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) Disorders Practice Exam

Obstructive Sleep Apnea Hypopnea is characterized by repeated episodes of partial or complete blockage of the airway during sleep, leading to a significant decrease in airflow. This condition can result in episodes of breathing cessation at night, known as apneas, as well as hypopneas, which are partial blockages resulting in reduced breathing. These episodes disrupt normal sleep patterns and are often associated with significant daytime consequences.

One of the major outcomes of these disruptions is excessive sleepiness during the day. Because individuals with this condition frequently awaken during the night due to breathing difficulties, they do not achieve restful sleep. This leads to excessive daytime sleepiness, as the body's need for restorative sleep is not met.

In summary, the combination of nightly episodes of breathing cessation (apneas) and excessive sleepiness during the day are both hallmark features of Obstructive Sleep Apnea Hypopnea, making the correct response an understanding of how these symptoms interrelate with the disorder.