Revolutionize Ventilation Monitoring
Real-time lung EIT (electrical impedance tomography) imaging was conducted during simulated apnea (breath hold) after inspiration. The lung ventilation image and the signal derived from the image clearly show the inspiratory apnea event. Note that the signal is proportional to the tidal volume. Snoring sound was simultaneously recorded. Apnea and hypopnea imaging during natural sleep is shown here.
After four normal breaths, simulated apnea (breath hold) at the end of expiration was tried. Blood oxygen dropped after the expiratory apnea event. Apnea and hypopnea imaging during natural sleep is shown here.