| Sleep-disordered breathing is characterized by frequent pauses in breathing during sleep, apneas, and hypopneas. |
| Central hypopneas were more common, but their reduction after pacing did not reach statistical significance. |
| This 3-min recording from an overnight polysomnogram shows repetitive obstructive sleep hypopneas causing arousals and oxygen desaturations. |
| Analysis of nocturnal respiration included detection of apneas, hypopneas, and periods of desaturation. |
| The apnea-hypopnea index was defined as total number of apneas and hypopneas divided by the number of hours of sleep. |
| In this scenario, the patient underwent a sleep study that showed repetitive obstructive sleep apneas and hypopneas. |
