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Peripheral capillary oxygen saturation (SpO2) nadir and ictal central apnea (ICA) duration. The abscissa is apnea duration (in seconds) and the ordinate is the SpO2 at apnea end. The robust simple linear regression line and 95% confidence intervals are shown. Dashed lines show that apnea duration of 60 seconds approximately correlates with SpO2 <75%.
FOA= focal onset aware, FOIA= focal onset impaired awareness, FBTCS= focal to bilateral tonic-clonic seizure, s= seconds.
