Figure 3. Hypopnea during a complex partial seizure.
This 60 second trace showing respiratory depression related to complex partial seizures in a 67 year old woman with epilepsy. Three of her habitual episodes—consisting of behavioral arrest with mouth movements—were recorded on video-EEG monitoring. All three events were associated with significant respiratory depression characterized by hypopneas and oxygen desaturation as low as 40%. NPT = nasal pressure transducer; Therm = oral/nasal thermisty; Chest = chest movement by respiratory inductance plethysmography; Abd = abdominal movement by respiratory inductance plethymography; EKG = electrocardiogram.