Certified Polysomnographic Technician (CPSGT) 2025 – 400 Free Practice Questions to Pass the Exam

The term 'hypopnea' specifically refers to a condition characterized by a reduction in airflow during sleep that results in decreased oxygen saturation levels. This definition is critical in understanding sleep disorders, particularly obstructive sleep apnea. In hypopnea, the decrease in airflow is typically defined as at least a 30% reduction compared to baseline values, and it is often associated with an oxygen desaturation of 3% or more, which can lead to fragmented sleep and subsequent daytime symptoms.

Recognizing the significance of hypopnea is essential for identifying individuals who may be suffering from sleep apnea or other related disorders, as it can impact overall health and quality of life. Other options refer to conditions like hyperpnea (increased airflow), apnea (cessation of breathing), or arousals from sleep, which, while related to sleep disturbances, do not accurately describe hypopnea itself. Thus, the understanding of hypopnea is foundational for both diagnosis and treatment in sleep medicine.