Polysomnogram in a child with severe obstructive sleep apnea

Epoch from a polysomnogram for a child with severe obstructive sleep apnea (OSA), with a 12.1-second obstructive apnea, identified by flattening of the nasal airflow (thermal sensor airflow). Note the slowing of the heart rate ("ECG" leads) and dipping in blood pressure during the event. This is quickly followed by a transient increase in the heart rate and blood pressure once the obstruction is no longer present on the nasal airflow.